Validator pass for image instructions
authorAndrey Tuganov <andreyt@google.com>
Thu, 26 Oct 2017 19:30:23 +0000 (15:30 -0400)
committerDavid Neto <dneto@google.com>
Wed, 22 Nov 2017 19:34:15 +0000 (14:34 -0500)
Includes validation rules for OpImageXXX and ImageOperand.

Doesn't include OpTypeImage and OpImageSparseXXX.

Disabled an invalid test.

Android.mk
source/CMakeLists.txt
source/val/validation_state.cpp
source/val/validation_state.h
source/validate.cpp
source/validate.h
source/validate_image.cpp [new file with mode: 0644]
test/val/CMakeLists.txt
test/val/val_capability_test.cpp
test/val/val_image_test.cpp [new file with mode: 0644]

index afc1514..53d267c 100644 (file)
@@ -41,6 +41,7 @@ SPVTOOLS_SRC_FILES := \
                source/validate_datarules.cpp \
                source/validate_decorations.cpp \
                source/validate_id.cpp \
+               source/validate_image.cpp \
                source/validate_instruction.cpp \
                source/validate_layout.cpp \
                source/validate_logicals.cpp \
index 4868c78..c500b05 100644 (file)
@@ -261,6 +261,7 @@ set(SPIRV_SOURCES
   ${CMAKE_CURRENT_SOURCE_DIR}/validate_datarules.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/validate_decorations.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/validate_id.cpp
+  ${CMAKE_CURRENT_SOURCE_DIR}/validate_image.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/validate_instruction.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/validate_layout.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/validate_logicals.cpp
index e5a5f84..cd4dafd 100644 (file)
@@ -438,8 +438,12 @@ bool ValidationState_t::RegisterUniqueTypeDeclaration(
 
 uint32_t ValidationState_t::GetTypeId(uint32_t id) const {
   const Instruction* inst = FindDef(id);
-  assert(inst);
-  return inst->type_id();
+  return inst ? inst->type_id() : 0;
+}
+
+SpvOp ValidationState_t::GetIdOpcode(uint32_t id) const {
+  const Instruction* inst = FindDef(id);
+  return inst ? inst->opcode() : SpvOpNop;
 }
 
 uint32_t ValidationState_t::GetComponentType(uint32_t id) const {
@@ -523,6 +527,21 @@ bool ValidationState_t::IsFloatVectorType(uint32_t id) const {
   return false;
 }
 
+bool ValidationState_t::IsFloatScalarOrVectorType(uint32_t id) const {
+  const Instruction* inst = FindDef(id);
+  assert(inst);
+
+  if (inst->opcode() == SpvOpTypeFloat) {
+    return true;
+  }
+
+  if (inst->opcode() == SpvOpTypeVector) {
+    return IsFloatScalarType(GetComponentType(id));
+  }
+
+  return false;
+}
+
 bool ValidationState_t::IsIntScalarType(uint32_t id) const {
   const Instruction* inst = FindDef(id);
   assert(inst);
@@ -540,6 +559,21 @@ bool ValidationState_t::IsIntVectorType(uint32_t id) const {
   return false;
 }
 
+bool ValidationState_t::IsIntScalarOrVectorType(uint32_t id) const {
+  const Instruction* inst = FindDef(id);
+  assert(inst);
+
+  if (inst->opcode() == SpvOpTypeInt) {
+    return true;
+  }
+
+  if (inst->opcode() == SpvOpTypeVector) {
+    return IsIntScalarType(GetComponentType(id));
+  }
+
+  return false;
+}
+
 bool ValidationState_t::IsUnsignedIntScalarType(uint32_t id) const {
   const Instruction* inst = FindDef(id);
   assert(inst);
@@ -591,6 +625,21 @@ bool ValidationState_t::IsBoolVectorType(uint32_t id) const {
   return false;
 }
 
+bool ValidationState_t::IsBoolScalarOrVectorType(uint32_t id) const {
+  const Instruction* inst = FindDef(id);
+  assert(inst);
+
+  if (inst->opcode() == SpvOpTypeBool) {
+    return true;
+  }
+
+  if (inst->opcode() == SpvOpTypeVector) {
+    return IsBoolScalarType(GetComponentType(id));
+  }
+
+  return false;
+}
+
 bool ValidationState_t::IsFloatMatrixType(uint32_t id) const {
   const Instruction* inst = FindDef(id);
   assert(inst);
@@ -673,4 +722,27 @@ uint32_t ValidationState_t::GetOperandTypeId(
   return GetTypeId(inst->words[operand.offset]);
 }
 
+bool ValidationState_t::GetConstantValUint64(uint32_t id, uint64_t* val) const {
+  const Instruction* inst = FindDef(id);
+  if (!inst) {
+    assert(0 && "Instruction not found");
+    return false;
+  }
+
+  if (inst->opcode() != SpvOpConstant && inst->opcode() != SpvOpSpecConstant)
+    return false;
+
+  if (!IsIntScalarType(inst->type_id()))
+    return false;
+
+  if (inst->words().size() == 4) {
+    *val = inst->word(3);
+  } else {
+    assert(inst->words().size() == 5);
+    *val = inst->word(3);
+    *val |= uint64_t(inst->word(4)) << 32;
+  }
+  return true;
+}
+
 }  // namespace libspirv
index b60e48d..8f261dc 100644 (file)
@@ -371,20 +371,31 @@ class ValidationState_t {
   // Only works for types not for objects.
   bool IsFloatScalarType(uint32_t id) const;
   bool IsFloatVectorType(uint32_t id) const;
+  bool IsFloatScalarOrVectorType(uint32_t id) const;
   bool IsFloatMatrixType(uint32_t id) const;
   bool IsIntScalarType(uint32_t id) const;
   bool IsIntVectorType(uint32_t id) const;
+  bool IsIntScalarOrVectorType(uint32_t id) const;
   bool IsUnsignedIntScalarType(uint32_t id) const;
   bool IsUnsignedIntVectorType(uint32_t id) const;
   bool IsSignedIntScalarType(uint32_t id) const;
   bool IsSignedIntVectorType(uint32_t id) const;
   bool IsBoolScalarType(uint32_t id) const;
   bool IsBoolVectorType(uint32_t id) const;
+  bool IsBoolScalarOrVectorType(uint32_t id) const;
   bool IsPointerType(uint32_t id) const;
 
+  // Gets value from OpConstant and OpSpecConstant as uint64.
+  // Returns false on failure (no instruction, wrong instruction, not int).
+  bool GetConstantValUint64(uint32_t id, uint64_t* val) const;
+
   // Returns type_id if id has type or zero otherwise.
   uint32_t GetTypeId(uint32_t id) const;
 
+  // Returns opcode of the instruction which issued the id or OpNop if the
+  // instruction is not registered.
+  SpvOp GetIdOpcode(uint32_t id) const;
+
   // Returns type_id for given id operand if it has a type or zero otherwise.
   // |operand_index| is expected to be pointing towards an operand which is an
   // id.
index ca73bd0..7db201b 100644 (file)
@@ -183,6 +183,7 @@ spv_result_t ProcessInstruction(void* user_data,
   if (auto error = ConversionPass(_, inst)) return error;
   if (auto error = LogicalsPass(_, inst)) return error;
   if (auto error = BitwisePass(_, inst)) return error;
+  if (auto error = ImagePass(_, inst)) return error;
 
   return SPV_SUCCESS;
 }
index 3c3bcb2..f7b1f7d 100644 (file)
@@ -127,6 +127,10 @@ spv_result_t LogicalsPass(ValidationState_t& _,
 spv_result_t BitwisePass(ValidationState_t& _,
                          const spv_parsed_instruction_t* inst);
 
+/// Validates correctness of image instructions.
+spv_result_t ImagePass(ValidationState_t& _,
+                       const spv_parsed_instruction_t* inst);
+
 // Validates that capability declarations use operands allowed in the current
 // context.
 spv_result_t CapabilityPass(ValidationState_t& _,
diff --git a/source/validate_image.cpp b/source/validate_image.cpp
new file mode 100644 (file)
index 0000000..bc6f70a
--- /dev/null
@@ -0,0 +1,1389 @@
+// Copyright (c) 2017 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Validates correctness of image instructions.
+
+#include "validate.h"
+
+#include "diagnostic.h"
+#include "opcode.h"
+#include "val/instruction.h"
+#include "val/validation_state.h"
+
+namespace libspirv {
+
+namespace {
+
+// Performs compile time check that all SpvImageOperandsXXX cases are handled in
+// this module. If SpvImageOperandsXXX list changes, this function will fail the
+// build.
+// For all other purposes this is a dummy function.
+bool CheckAllImageOperandsHandled() {
+  SpvImageOperandsMask enum_val = SpvImageOperandsBiasMask;
+
+  // Some improvised code to prevent the compiler from considering enum_val
+  // constant and optimizing the switch away.
+  uint32_t stack_var = 0;
+  if (reinterpret_cast<uintptr_t>(&stack_var) % 256)
+    enum_val = SpvImageOperandsLodMask;
+
+  switch (enum_val) {
+    // Please update the validation rules in this module if you are changing
+    // the list of image operands, and add new enum values to this switch.
+    case SpvImageOperandsMaskNone:
+      return false;
+    case SpvImageOperandsBiasMask:
+    case SpvImageOperandsLodMask:
+    case SpvImageOperandsGradMask:
+    case SpvImageOperandsConstOffsetMask:
+    case SpvImageOperandsOffsetMask:
+    case SpvImageOperandsConstOffsetsMask:
+    case SpvImageOperandsSampleMask:
+    case SpvImageOperandsMinLodMask:
+      return true;
+  }
+  return false;
+}
+
+// Returns number of '1' bits in a word.
+uint32_t CountSetBits(uint32_t word) {
+  uint32_t count = 0;
+  while (word) {
+    word &= word - 1;
+    ++count;
+  }
+  return count;
+}
+
+// Used by GetImageTypeInfo. See OpTypeImage spec for more information.
+struct ImageTypeInfo {
+  uint32_t sampled_type = 0;
+  SpvDim dim = SpvDimMax;
+  uint32_t depth = 0;
+  uint32_t arrayed = 0;
+  uint32_t multisampled = 0;
+  uint32_t sampled = 0;
+  SpvImageFormat format = SpvImageFormatMax;
+  SpvAccessQualifier access_qualifier = SpvAccessQualifierMax;
+};
+
+// Provides information on image type. |id| should be object of either
+// OpTypeImage or OpTypeSampledImage type. Returns false in case of failure
+// (not a valid id, failed to parse the instruction, etc).
+bool GetImageTypeInfo(const ValidationState_t& _, uint32_t id,
+                      ImageTypeInfo* info) {
+  if (!id || !info)
+    return false;
+
+  const Instruction* inst = _.FindDef(id);
+  assert(inst);
+
+  if (inst->opcode() == SpvOpTypeSampledImage) {
+    inst = _.FindDef(inst->word(2));
+    assert(inst);
+  }
+
+  if (inst->opcode() != SpvOpTypeImage)
+    return false;
+
+  const size_t num_words = inst->words().size();
+  if (num_words != 9 && num_words != 10)
+    return false;
+
+  info->sampled_type = inst->word(2);
+  info->dim = static_cast<SpvDim>(inst->word(3));
+  info->depth = inst->word(4);
+  info->arrayed = inst->word(5);
+  info->multisampled = inst->word(6);
+  info->sampled = inst->word(7);
+  info->format = static_cast<SpvImageFormat>(inst->word(8));
+  info->access_qualifier = num_words < 10 ? SpvAccessQualifierMax :
+      static_cast<SpvAccessQualifier>(inst->word(9));
+  return true;
+}
+
+bool IsImplicitLod(SpvOp opcode) {
+  switch (opcode) {
+    case SpvOpImageSampleImplicitLod:
+    case SpvOpImageSampleDrefImplicitLod:
+    case SpvOpImageSampleProjImplicitLod:
+    case SpvOpImageSampleProjDrefImplicitLod:
+    case SpvOpImageSparseSampleImplicitLod:
+    case SpvOpImageSparseSampleDrefImplicitLod:
+    case SpvOpImageSparseSampleProjImplicitLod:
+    case SpvOpImageSparseSampleProjDrefImplicitLod:
+      return true;
+    default:
+      break;
+  };
+  return false;
+}
+
+bool IsExplicitLod(SpvOp opcode) {
+  switch (opcode) {
+    case SpvOpImageSampleExplicitLod:
+    case SpvOpImageSampleDrefExplicitLod:
+    case SpvOpImageSampleProjExplicitLod:
+    case SpvOpImageSampleProjDrefExplicitLod:
+    case SpvOpImageSparseSampleExplicitLod:
+    case SpvOpImageSparseSampleDrefExplicitLod:
+    case SpvOpImageSparseSampleProjExplicitLod:
+    case SpvOpImageSparseSampleProjDrefExplicitLod:
+      return true;
+    default:
+      break;
+  };
+  return false;
+}
+
+// Returns true if the opcode is a Image instruction which applies
+// homogenous projection to the coordinates.
+bool IsProj(SpvOp opcode) {
+  switch (opcode) {
+    case SpvOpImageSampleProjImplicitLod:
+    case SpvOpImageSampleProjDrefImplicitLod:
+    case SpvOpImageSparseSampleProjImplicitLod:
+    case SpvOpImageSparseSampleProjDrefImplicitLod:
+    case SpvOpImageSampleProjExplicitLod:
+    case SpvOpImageSampleProjDrefExplicitLod:
+    case SpvOpImageSparseSampleProjExplicitLod:
+    case SpvOpImageSparseSampleProjDrefExplicitLod:
+      return true;
+    default:
+      break;
+  };
+  return false;
+}
+
+// Returns the number of components in a coordinate used to access a texel in
+// a single plane of an image with the given parameters.
+uint32_t GetPlaneCoordSize(const ImageTypeInfo& info) {
+  uint32_t plane_size = 0;
+  // If this switch breaks your build, please add new values below.
+  switch (info.dim) {
+    case SpvDim1D:
+    case SpvDimBuffer:
+      plane_size = 1;
+      break;
+    case SpvDim2D:
+    case SpvDimRect:
+    case SpvDimSubpassData:
+      plane_size = 2;
+      break;
+    case SpvDim3D:
+    case SpvDimCube:
+      // For Cube direction vector is used instead of UV.
+      plane_size = 3;
+      break;
+    case SpvDimMax:
+      assert(0);
+      break;
+  }
+
+  return plane_size;
+}
+
+// Returns minimal number of coordinates based on image dim, arrayed and whether
+// the instruction uses projection coordinates.
+uint32_t GetMinCoordSize(SpvOp opcode, const ImageTypeInfo& info) {
+  if (info.dim == SpvDimCube &&
+      (opcode == SpvOpImageRead || opcode == SpvOpImageWrite)) {
+    // These opcodes use UV for Cube, not direction vector.
+    return 3;
+  }
+
+  return GetPlaneCoordSize(info) + info.arrayed + (IsProj(opcode) ? 1 : 0);
+}
+
+// Checks ImageOperand bitfield and respective operands.
+spv_result_t ValidateImageOperands(ValidationState_t& _,
+                                   const spv_parsed_instruction_t& inst,
+                                   const ImageTypeInfo& info,
+                                   uint32_t mask, uint32_t word_index) {
+  static const bool kAllImageOperandsHandled = CheckAllImageOperandsHandled();
+  (void)kAllImageOperandsHandled;
+
+  const SpvOp opcode = static_cast<SpvOp>(inst.opcode);
+  const uint32_t num_words = inst.num_words;
+
+  uint32_t expected_num_image_operand_words = CountSetBits(mask);
+  if (mask & SpvImageOperandsGradMask) {
+    // Grad uses two words.
+    ++expected_num_image_operand_words;
+  }
+
+  if (expected_num_image_operand_words != num_words - word_index) {
+    return _.diag(SPV_ERROR_INVALID_DATA)
+        << "Number of image operand ids doesn't correspond to the bit mask: "
+        << spvOpcodeString(opcode);
+  }
+
+  if (CountSetBits(mask & (SpvImageOperandsOffsetMask |
+                           SpvImageOperandsConstOffsetMask |
+                           SpvImageOperandsConstOffsetsMask)) > 1) {
+    return _.diag(SPV_ERROR_INVALID_DATA)
+        << "Image Operands Offset, ConstOffset, ConstOffsets cannot be used "
+        << "together: " << spvOpcodeString(opcode);
+  };
+
+  const bool is_implicit_lod = IsImplicitLod(opcode);
+  const bool is_explicit_lod = IsExplicitLod(opcode);
+
+  // The checks should be done in the order of definition of OperandImage.
+
+  if (mask & SpvImageOperandsBiasMask) {
+    if (!is_implicit_lod) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Image Operand Bias can only be used with ImplicitLod opcodes: "
+            << spvOpcodeString(opcode);
+    };
+
+    const uint32_t type_id = _.GetTypeId(inst.words[word_index++]);
+    if (!_.IsFloatScalarType(type_id)) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand Bias to be float scalar: "
+          << spvOpcodeString(opcode);
+    }
+
+    if (info.dim != SpvDim1D && info.dim != SpvDim2D && info.dim != SpvDim3D &&
+        info.dim != SpvDimCube) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand Bias requires 'Dim' parameter to be 1D, 2D, 3D or "
+          << "Cube: " << spvOpcodeString(opcode);
+    }
+
+    if (info.multisampled != 0) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand Bias requires 'MS' parameter to be 0: "
+          << spvOpcodeString(opcode);
+    }
+  }
+
+  if (mask & SpvImageOperandsLodMask) {
+    // TODO(atgoo@github.com) Check which opcodes are allowed to use this
+    // ImageOperand.
+    if (is_implicit_lod) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Image Operand Lod cannot be used with ImplicitLod opcodes: "
+            << spvOpcodeString(opcode);
+    };
+
+    if (mask & SpvImageOperandsGradMask) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand bits Lod and Grad cannot be set at the same time: "
+          << spvOpcodeString(opcode);
+    }
+
+    const uint32_t type_id = _.GetTypeId(inst.words[word_index++]);
+    // TODO(atgoo@github.com) Check which opcode can work with floats and which
+    // with ints. The spec is unclear.
+    if (!_.IsFloatScalarType(type_id) && !_.IsIntScalarType(type_id)) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand Lod to be int or float scalar: "
+          << spvOpcodeString(opcode);
+    }
+
+    if (info.dim != SpvDim1D && info.dim != SpvDim2D && info.dim != SpvDim3D &&
+        info.dim != SpvDimCube) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand Lod requires 'Dim' parameter to be 1D, 2D, 3D or "
+          << "Cube: " << spvOpcodeString(opcode);
+    }
+
+    if (info.multisampled != 0) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand Lod requires 'MS' parameter to be 0: "
+          << spvOpcodeString(opcode);
+    }
+  }
+
+  if (mask & SpvImageOperandsGradMask) {
+    if (!is_explicit_lod) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Image Operand Grad can only be used with ExplicitLod opcodes: "
+            << spvOpcodeString(opcode);
+    };
+
+    const uint32_t dx_type_id = _.GetTypeId(inst.words[word_index++]);
+    const uint32_t dy_type_id = _.GetTypeId(inst.words[word_index++]);
+    if (!_.IsFloatScalarOrVectorType(dx_type_id) ||
+        !_.IsFloatScalarOrVectorType(dy_type_id)) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected both Image Operand Grad ids to be float scalars or "
+          << "vectors: " << spvOpcodeString(opcode);
+    }
+
+    const uint32_t plane_size = GetPlaneCoordSize(info);
+    const uint32_t dx_size = _.GetDimension(dx_type_id);
+    const uint32_t dy_size = _.GetDimension(dy_type_id);
+    if (plane_size != dx_size) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand Grad dx to have " << plane_size
+          << " components, but given " << dx_size << ": "
+          << spvOpcodeString(opcode);
+    }
+
+    if (plane_size != dy_size) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand Grad dy to have " << plane_size
+          << " components, but given " << dy_size << ": "
+          << spvOpcodeString(opcode);
+    }
+
+    if (info.multisampled != 0) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand Grad requires 'MS' parameter to be 0: "
+          << spvOpcodeString(opcode);
+    }
+  }
+
+  if (mask & SpvImageOperandsConstOffsetMask) {
+    if (info.dim == SpvDimCube) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand ConstOffset cannot be used with Cube Image 'Dim': "
+          << spvOpcodeString(opcode);
+    }
+
+    const uint32_t id = inst.words[word_index++];
+    const uint32_t type_id = _.GetTypeId(id);
+    if (!_.IsIntScalarOrVectorType(type_id)) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand ConstOffset to be int scalar or "
+          << "vector: " << spvOpcodeString(opcode);
+    }
+
+    if (!spvOpcodeIsConstant(_.GetIdOpcode(id))) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand ConstOffset to be a const object: "
+          << spvOpcodeString(opcode);
+    }
+
+    const uint32_t plane_size = GetPlaneCoordSize(info);
+    const uint32_t offset_size = _.GetDimension(type_id);
+    if (plane_size != offset_size) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand ConstOffset to have " << plane_size
+          << " components, but given " << offset_size << ": "
+          << spvOpcodeString(opcode);
+    }
+  }
+
+  if (mask & SpvImageOperandsOffsetMask) {
+    if (info.dim == SpvDimCube) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand Offset cannot be used with Cube Image 'Dim': "
+          << spvOpcodeString(opcode);
+    }
+
+    const uint32_t id = inst.words[word_index++];
+    const uint32_t type_id = _.GetTypeId(id);
+    if (!_.IsIntScalarOrVectorType(type_id)) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand Offset to be int scalar or "
+          << "vector: " << spvOpcodeString(opcode);
+    }
+
+    const uint32_t plane_size = GetPlaneCoordSize(info);
+    const uint32_t offset_size = _.GetDimension(type_id);
+    if (plane_size != offset_size) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand Offset to have " << plane_size
+          << " components, but given " << offset_size << ": "
+          << spvOpcodeString(opcode);
+    }
+  }
+
+  if (mask & SpvImageOperandsConstOffsetsMask) {
+    if (opcode != SpvOpImageGather && opcode != SpvOpImageDrefGather) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand ConstOffsets can only be used with OpImageGather "
+          << "and OpImageDrefGather: " << spvOpcodeString(opcode);
+    }
+
+    if (info.dim == SpvDimCube) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand ConstOffsets cannot be used with Cube Image 'Dim': "
+          << spvOpcodeString(opcode);
+    }
+
+    const uint32_t id = inst.words[word_index++];
+    const uint32_t type_id = _.GetTypeId(id);
+    const Instruction* type_inst = _.FindDef(type_id);
+    assert(type_inst);
+
+    if (type_inst->opcode() != SpvOpTypeArray) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand ConstOffsets to be an array of size 4: "
+          << spvOpcodeString(opcode);
+    }
+
+    uint64_t array_size = 0;
+    if (!_.GetConstantValUint64(type_inst->word(3), &array_size)) {
+      assert(0 && "Array type definition is corrupt");
+    }
+
+    if (array_size != 4) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand ConstOffsets to be an array of size 4: "
+          << spvOpcodeString(opcode);
+    }
+
+    const uint32_t component_type = type_inst->word(2);
+    if (!_.IsIntVectorType(component_type) ||
+        _.GetDimension(component_type) != 2) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand ConstOffsets array componenets to be int "
+          << "vectors of size 2: " << spvOpcodeString(opcode);
+    }
+
+    if (!spvOpcodeIsConstant(_.GetIdOpcode(id))) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand ConstOffsets to be a const object: "
+          << spvOpcodeString(opcode);
+    }
+  }
+
+  if (mask & SpvImageOperandsSampleMask) {
+    if (opcode != SpvOpImageFetch && opcode != SpvOpImageRead &&
+        opcode != SpvOpImageWrite) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand Sample can only be used with OpImageFetch, "
+          << "OpImageRead and OpImageWrite: " << spvOpcodeString(opcode);
+    }
+
+    if (info.multisampled == 0) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand Sample requires non-zero 'MS' parameter: "
+          << spvOpcodeString(opcode);
+    }
+
+    const uint32_t type_id = _.GetTypeId(inst.words[word_index++]);
+    if (!_.IsIntScalarType(type_id)) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand Sample to be int scalar: "
+          << spvOpcodeString(opcode);
+    }
+  }
+
+  if (mask & SpvImageOperandsMinLodMask) {
+    if (!is_implicit_lod && !(mask & SpvImageOperandsGradMask)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Image Operand MinLod can only be used with ImplicitLod "
+            << "opcodes or together with Image Operand Grad: "
+            << spvOpcodeString(opcode);
+    };
+
+    const uint32_t type_id = _.GetTypeId(inst.words[word_index++]);
+    if (!_.IsFloatScalarType(type_id)) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image Operand MinLod to be float scalar: "
+          << spvOpcodeString(opcode);
+    }
+
+    if (info.dim != SpvDim1D && info.dim != SpvDim2D && info.dim != SpvDim3D &&
+        info.dim != SpvDimCube) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand MinLod requires 'Dim' parameter to be 1D, 2D, 3D "
+          << "or Cube: " << spvOpcodeString(opcode);
+    }
+
+    if (info.multisampled != 0) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Operand MinLod requires 'MS' parameter to be 0: "
+          << spvOpcodeString(opcode);
+    }
+  }
+
+  return SPV_SUCCESS;
+}
+
+// Checks some of the validation rules which are common to multiple opcodes.
+spv_result_t ValidateImageCommon(ValidationState_t& _,
+                                 const spv_parsed_instruction_t& inst,
+                                 const ImageTypeInfo& info) {
+  const SpvOp opcode = static_cast<SpvOp>(inst.opcode);
+  if (IsProj(opcode)) {
+    if (info.dim != SpvDim1D && info.dim != SpvDim2D &&
+        info.dim != SpvDim3D && info.dim != SpvDimRect) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image 'Dim' parameter to be 1D, 2D, 3D or Rect: "
+          << spvOpcodeString(opcode);
+    }
+
+    if (info.multisampled != 0) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Image 'MS' parameter to be 0: "
+          << spvOpcodeString(opcode);
+    }
+
+    if (info.arrayed != 0) {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Image Image 'arrayed' parameter to be 0: "
+          << spvOpcodeString(opcode);
+    }
+  }
+
+  if (opcode == SpvOpImageRead || opcode == SpvOpImageWrite) {
+    if (info.sampled == 0) {
+    } else if (info.sampled == 2) {
+      if (info.dim == SpvDim1D && !_.HasCapability(SpvCapabilityImage1D)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Capability Image1D is required to access storage image: "
+            << spvOpcodeString(opcode);
+      } else if (info.dim == SpvDimRect &&
+                 !_.HasCapability(SpvCapabilityImageRect)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Capability ImageRect is required to access storage image: "
+            << spvOpcodeString(opcode);
+      } else if (info.dim == SpvDimBuffer &&
+                 !_.HasCapability(SpvCapabilityImageBuffer)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Capability ImageBuffer is required to access storage image: "
+            << spvOpcodeString(opcode);
+      } else if (info.dim == SpvDimCube && info.arrayed == 1 &&
+                 !_.HasCapability(SpvCapabilityImageCubeArray)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Capability ImageCubeArray is required to access storage "
+            << "image: " << spvOpcodeString(opcode);
+      }
+
+      if (info.multisampled == 1 &&
+          !_.HasCapability(SpvCapabilityImageMSArray)) {
+#if 0
+        // TODO(atgoo@github.com) The description of this rule in the spec
+        // is unclear and Glslang doesn't declare ImageMSArray. Need to clarify
+        // and reenable.
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Capability ImageMSArray is required to access storage "
+            << "image: " << spvOpcodeString(opcode);
+#endif
+      }
+    } else {
+      return _.diag(SPV_ERROR_INVALID_DATA)
+          << "Expected Image 'Sampled' parameter to be 0 or 2: "
+          << spvOpcodeString(opcode);
+    }
+  }
+
+  return SPV_SUCCESS;
+}
+
+}  // namespace
+
+// Validates correctness of image instructions.
+spv_result_t ImagePass(ValidationState_t& _,
+                       const spv_parsed_instruction_t* inst) {
+  const SpvOp opcode = static_cast<SpvOp>(inst->opcode);
+  const uint32_t result_type = inst->type_id;
+
+  switch (opcode) {
+    case SpvOpSampledImage: {
+      if (_.GetIdOpcode(result_type) != SpvOpTypeSampledImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be OpTypeSampledImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t image_type = _.GetOperandTypeId(inst, 2);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image to be of type OpTypeImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      // TODO(atgoo@github.com) Check compatibility of result type and received
+      // image.
+
+      if (info.sampled != 0 && info.sampled != 1) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image 'Sampled' parameter to be 0 or 1: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (info.dim == SpvDimSubpassData) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image 'Dim' parameter to be not SubpassData: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (_.GetIdOpcode(_.GetOperandTypeId(inst, 3)) != SpvOpTypeSampler) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Sampler to be of type OpTypeSampler: "
+            << spvOpcodeString(opcode);
+      }
+
+      break;
+    }
+
+    case SpvOpImageSampleImplicitLod:
+    case SpvOpImageSampleExplicitLod:
+    case SpvOpImageSampleProjImplicitLod:
+    case SpvOpImageSampleProjExplicitLod: {
+      if (!_.IsIntVectorType(result_type) &&
+          !_.IsFloatVectorType(result_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be int or float vector type: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (_.GetDimension(result_type) != 4) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to have 4 components: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t image_type = _.GetOperandTypeId(inst, 2);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeSampledImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Sampled Image to be of type OpTypeSampledImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      if (spv_result_t result = ValidateImageCommon(_, *inst, info))
+        return result;
+
+      if (_.GetIdOpcode(info.sampled_type) != SpvOpTypeVoid) {
+        const uint32_t result_component_type = _.GetComponentType(result_type);
+        if (result_component_type != info.sampled_type) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Image 'Sampled Type' to be the same as Result Type "
+              << "components: " << spvOpcodeString(opcode);
+        }
+      }
+
+      const uint32_t coord_type = _.GetOperandTypeId(inst, 3);
+      if (opcode == SpvOpImageSampleExplicitLod &&
+          _.HasCapability(SpvCapabilityKernel)) {
+        if (!_.IsFloatScalarOrVectorType(coord_type) &&
+            !_.IsIntScalarOrVectorType(coord_type)) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Coordinate to be int or float scalar or vector: "
+              << spvOpcodeString(opcode);
+        }
+      } else {
+        if (!_.IsFloatScalarOrVectorType(coord_type)) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Coordinate to be float scalar or vector: "
+              << spvOpcodeString(opcode);
+        }
+      }
+
+      const uint32_t min_coord_size = GetMinCoordSize(opcode, info);
+      const uint32_t actual_coord_size = _.GetDimension(coord_type);
+      if (min_coord_size > actual_coord_size) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to have at least " << min_coord_size
+            << " components, but given only " << actual_coord_size << ": "
+            << spvOpcodeString(opcode);
+      }
+
+      if (inst->num_words <= 5) {
+        assert(IsImplicitLod(opcode));
+        break;
+      }
+
+      const uint32_t mask = inst->words[5];
+      if (spv_result_t result = ValidateImageOperands(
+          _, *inst, info, mask, /* word_index = */ 6))
+        return result;
+
+      break;
+    }
+
+    case SpvOpImageSampleDrefImplicitLod:
+    case SpvOpImageSampleDrefExplicitLod:
+    case SpvOpImageSampleProjDrefImplicitLod:
+    case SpvOpImageSampleProjDrefExplicitLod: {
+      if (!_.IsIntScalarType(result_type) &&
+          !_.IsFloatScalarType(result_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be int or float scalar type: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t image_type = _.GetOperandTypeId(inst, 2);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeSampledImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Sampled Image to be of type OpTypeSampledImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      if (spv_result_t result = ValidateImageCommon(_, *inst, info))
+        return result;
+
+      if (result_type != info.sampled_type) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image 'Sampled Type' to be the same as Result Type: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t coord_type = _.GetOperandTypeId(inst, 3);
+      if (!_.IsFloatScalarOrVectorType(coord_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to be float scalar or vector: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t min_coord_size = GetMinCoordSize(opcode, info);
+      const uint32_t actual_coord_size = _.GetDimension(coord_type);
+      if (min_coord_size > actual_coord_size) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to have at least " << min_coord_size
+            << " components, but given only " << actual_coord_size << ": "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t dref_type = _.GetOperandTypeId(inst, 4);
+      if (dref_type != info.sampled_type) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Dref to be of Image 'Sampled Type': "
+            << spvOpcodeString(opcode);
+      }
+
+
+      if (inst->num_words <= 6) {
+        assert(IsImplicitLod(opcode));
+        break;
+      }
+
+      const uint32_t mask = inst->words[6];
+      if (spv_result_t result = ValidateImageOperands(
+          _, *inst, info, mask, /* word_index = */ 7))
+        return result;
+
+      break;
+    }
+
+    case SpvOpImageFetch: {
+      if (!_.IsIntVectorType(result_type) &&
+          !_.IsFloatVectorType(result_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be int or float vector type: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (_.GetDimension(result_type) != 4) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to have 4 components: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t image_type = _.GetOperandTypeId(inst, 2);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image to be of type OpTypeImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      if (_.GetIdOpcode(info.sampled_type) != SpvOpTypeVoid) {
+        const uint32_t result_component_type = _.GetComponentType(result_type);
+        if (result_component_type != info.sampled_type) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Image 'Sampled Type' to be the same as Result Type "
+              << "components: " << spvOpcodeString(opcode);
+        }
+      }
+
+      if (info.dim == SpvDimCube) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Image 'Dim' cannot be Cube: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (info.sampled != 1) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image 'Sampled' parameter to be 1: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t coord_type = _.GetOperandTypeId(inst, 3);
+      if (!_.IsIntScalarOrVectorType(coord_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to be int scalar or vector: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t min_coord_size = GetMinCoordSize(opcode, info);
+      const uint32_t actual_coord_size = _.GetDimension(coord_type);
+      if (min_coord_size > actual_coord_size) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to have at least " << min_coord_size
+            << " components, but given only " << actual_coord_size << ": "
+            << spvOpcodeString(opcode);
+      }
+
+      if (inst->num_words <= 5)
+        break;
+
+      const uint32_t mask = inst->words[5];
+      if (spv_result_t result = ValidateImageOperands(
+          _, *inst, info, mask, /* word_index = */ 6))
+        return result;
+
+      break;
+    }
+
+    case SpvOpImageGather:
+    case SpvOpImageDrefGather: {
+      if (!_.IsIntVectorType(result_type) &&
+          !_.IsFloatVectorType(result_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be int or float vector type: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (_.GetDimension(result_type) != 4) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to have 4 components: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t image_type = _.GetOperandTypeId(inst, 2);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeSampledImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Sampled Image to be of type OpTypeSampledImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      if (opcode == SpvOpImageDrefGather ||
+          _.GetIdOpcode(info.sampled_type) != SpvOpTypeVoid) {
+        const uint32_t result_component_type = _.GetComponentType(result_type);
+        if (result_component_type != info.sampled_type) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Image 'Sampled Type' to be the same as Result Type "
+              << "components: " << spvOpcodeString(opcode);
+        }
+      }
+
+      if (info.dim != SpvDim2D && info.dim != SpvDimCube &&
+          info.dim != SpvDimRect) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image 'Dim' cannot be Cube: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t coord_type = _.GetOperandTypeId(inst, 3);
+      if (!_.IsFloatScalarOrVectorType(coord_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to be float scalar or vector: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t min_coord_size = GetMinCoordSize(opcode, info);
+      const uint32_t actual_coord_size = _.GetDimension(coord_type);
+      if (min_coord_size > actual_coord_size) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to have at least " << min_coord_size
+            << " components, but given only " << actual_coord_size << ": "
+            << spvOpcodeString(opcode);
+      }
+
+      if (opcode == SpvOpImageGather) {
+        const uint32_t component_index_type = _.GetOperandTypeId(inst, 4);
+        if (!_.IsIntScalarType(component_index_type)) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Component to be int scalar: "
+              << spvOpcodeString(opcode);
+        }
+      } else {
+        assert(opcode == SpvOpImageDrefGather);
+        const uint32_t dref_type = _.GetOperandTypeId(inst, 4);
+        if (dref_type != info.sampled_type) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Dref to be of Image 'Sampled Type': "
+              << spvOpcodeString(opcode);
+        }
+      }
+
+      if (inst->num_words <= 6)
+        break;
+
+      const uint32_t mask = inst->words[6];
+      if (spv_result_t result = ValidateImageOperands(
+          _, *inst, info, mask, /* word_index = */ 7))
+        return result;
+
+      break;
+    }
+
+    case SpvOpImageRead: {
+      if (!_.IsIntVectorType(result_type) &&
+          !_.IsFloatVectorType(result_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be int or float vector type: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (_.GetDimension(result_type) != 4) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to have 4 components: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t image_type = _.GetOperandTypeId(inst, 2);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image to be of type OpTypeImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      if (_.GetIdOpcode(info.sampled_type) != SpvOpTypeVoid) {
+        const uint32_t result_component_type = _.GetComponentType(result_type);
+        if (result_component_type != info.sampled_type) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Image 'Sampled Type' to be the same as Result Type "
+              << "components: " << spvOpcodeString(opcode);
+        }
+      }
+
+      if (spv_result_t result = ValidateImageCommon(_, *inst, info))
+        return result;
+
+      const uint32_t coord_type = _.GetOperandTypeId(inst, 3);
+      if (!_.IsIntScalarOrVectorType(coord_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to be int scalar or vector: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t min_coord_size = GetMinCoordSize(opcode, info);
+      const uint32_t actual_coord_size = _.GetDimension(coord_type);
+      if (min_coord_size > actual_coord_size) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to have at least " << min_coord_size
+            << " components, but given only " << actual_coord_size << ": "
+            << spvOpcodeString(opcode);
+      }
+
+      if (info.format == SpvImageFormatUnknown &&
+          info.dim != SpvDimSubpassData &&
+          !_.HasCapability(SpvCapabilityStorageImageReadWithoutFormat)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Capability StorageImageReadWithoutFormat is required to read "
+            << "storage image: " << spvOpcodeString(opcode);
+      }
+
+      if (inst->num_words <= 5)
+        break;
+
+      const uint32_t mask = inst->words[5];
+      if (spv_result_t result = ValidateImageOperands(
+          _, *inst, info, mask, /* word_index = */ 6))
+        return result;
+
+      break;
+    }
+
+    case SpvOpImageWrite: {
+      const uint32_t image_type = _.GetOperandTypeId(inst, 0);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image to be of type OpTypeImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      if (info.dim == SpvDimSubpassData) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Image 'Dim' cannot be SubpassData: " << spvOpcodeString(opcode);
+      }
+
+      if (spv_result_t result = ValidateImageCommon(_, *inst, info))
+        return result;
+
+      const uint32_t coord_type = _.GetOperandTypeId(inst, 1);
+      if (!_.IsIntScalarOrVectorType(coord_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to be int scalar or vector: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t min_coord_size = GetMinCoordSize(opcode, info);
+      const uint32_t actual_coord_size = _.GetDimension(coord_type);
+      if (min_coord_size > actual_coord_size) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to have at least " << min_coord_size
+            << " components, but given only " << actual_coord_size << ": "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t texel_type = _.GetOperandTypeId(inst, 2);
+      if (!_.IsIntVectorType(texel_type) &&
+          !_.IsFloatVectorType(texel_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Texel to be int or float vector or scalar: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (_.GetDimension(texel_type) != 4) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Texel to have 4 components: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (_.GetIdOpcode(info.sampled_type) != SpvOpTypeVoid) {
+        const uint32_t texel_component_type = _.GetComponentType(texel_type);
+        if (texel_component_type != info.sampled_type) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Image 'Sampled Type' to be the same as Texel "
+              << "components: " << spvOpcodeString(opcode);
+        }
+      }
+
+      if (info.format == SpvImageFormatUnknown &&
+          info.dim != SpvDimSubpassData &&
+          !_.HasCapability(SpvCapabilityStorageImageWriteWithoutFormat)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Capability StorageImageWriteWithoutFormat is required to write "
+            << "to storage image: " << spvOpcodeString(opcode);
+      }
+
+      if (inst->num_words <= 4)
+        break;
+
+      const uint32_t mask = inst->words[4];
+      if (spv_result_t result = ValidateImageOperands(
+          _, *inst, info, mask, /* word_index = */ 5))
+        return result;
+
+      break;
+    }
+
+    case SpvOpImage: {
+      if (_.GetIdOpcode(result_type) != SpvOpTypeImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be OpTypeImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t sampled_image_type = _.GetOperandTypeId(inst, 2);
+      const Instruction* sampled_image_type_inst =
+          _.FindDef(sampled_image_type);
+      assert(sampled_image_type_inst);
+
+      if (sampled_image_type_inst->opcode() != SpvOpTypeSampledImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Sample Image to be of type OpTypeSampleImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (sampled_image_type_inst->word(2) != result_type) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Sample Image image type to be equal to Result Type: "
+            << spvOpcodeString(opcode);
+      }
+
+      break;
+    }
+
+    case SpvOpImageQueryFormat:
+    case SpvOpImageQueryOrder: {
+      if (!_.IsIntScalarType(result_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be int scalar type: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (_.GetIdOpcode(_.GetOperandTypeId(inst, 2)) != SpvOpTypeImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected operand to be of type OpTypeImage: "
+            << spvOpcodeString(opcode);
+      }
+      break;
+    }
+
+    case SpvOpImageQuerySizeLod: {
+      if (!_.IsIntScalarOrVectorType(result_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be int scalar or vector type: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t image_type = _.GetOperandTypeId(inst, 2);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image to be of type OpTypeImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      uint32_t expected_num_components = info.arrayed;
+      switch (info.dim) {
+        case SpvDim1D:
+          expected_num_components += 1;
+          break;
+        case SpvDim2D:
+        case SpvDimCube:
+          expected_num_components += 2;
+          break;
+        case SpvDim3D:
+          expected_num_components += 3;
+          break;
+        default:
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Image 'Dim' must be 1D, 2D, 3D or Cube: "
+              << spvOpcodeString(opcode);
+      };
+
+      if (info.multisampled != 0) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Image 'MS' must be 0: " << spvOpcodeString(opcode);
+      }
+
+      uint32_t result_num_components = _.GetDimension(result_type);
+      if (result_num_components != expected_num_components) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Result Type has " << result_num_components << " components, "
+            << "but " << expected_num_components << " expected: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t lod_type = _.GetOperandTypeId(inst, 3);
+      if (!_.IsIntScalarType(lod_type) && !_.IsFloatScalarType(lod_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Level of Detail to be int or float scalar: "
+            << spvOpcodeString(opcode);
+      }
+
+      break;
+    }
+
+    case SpvOpImageQuerySize: {
+      if (!_.IsIntScalarOrVectorType(result_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be int scalar or vector type: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t image_type = _.GetOperandTypeId(inst, 2);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image to be of type OpTypeImage: "
+            << spvOpcodeString(opcode);
+      }
+
+#if 0
+      // TODO(atgoo@github.com) The spec doesn't whitelist all Dims supported by
+      // GLSL. Need to verify if there is an error and reenable.
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      uint32_t expected_num_components = info.arrayed;
+      switch (info.dim) {
+        case SpvDimBuffer:
+          expected_num_components += 1;
+          break;
+        case SpvDim2D:
+          if (info.multisampled != 1 && info.sampled != 0 &&
+              info.sampled != 2) {
+            return _.diag(SPV_ERROR_INVALID_DATA)
+                << "Expected either 'MS'=1 or 'Sampled'=0 or 'Sampled'=2 "
+                << "for 2D dim: " << spvOpcodeString(opcode);
+          }
+        case SpvDimRect:
+          expected_num_components += 2;
+          break;
+        case SpvDim3D:
+          expected_num_components += 3;
+          if (info.sampled != 0 &&
+              info.sampled != 2) {
+            return _.diag(SPV_ERROR_INVALID_DATA)
+                << "Expected either 'Sampled'=0 or 'Sampled'=2 "
+                << "for 3D dim: " << spvOpcodeString(opcode);
+          }
+          break;
+        default:
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Image 'Dim' must be Buffer, 2D, 3D or Rect: "
+              << spvOpcodeString(opcode);
+      };
+
+
+      if (info.multisampled != 0) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Image 'MS' must be 0: " << spvOpcodeString(opcode);
+      }
+
+      uint32_t result_num_components = _.GetDimension(result_type);
+      if (result_num_components != expected_num_components) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Result Type has " << result_num_components << " components, "
+            << "but " << expected_num_components << " expected: "
+            << spvOpcodeString(opcode);
+      }
+#endif
+      break;
+    }
+
+    case SpvOpImageQueryLod: {
+      if (!_.IsFloatVectorType(result_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be float vector type: "
+            << spvOpcodeString(opcode);
+      }
+
+      if (_.GetDimension(result_type) != 2) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to have 2 components: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t image_type = _.GetOperandTypeId(inst, 2);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeSampledImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image operand to be of type OpTypeSampledImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      if (info.dim != SpvDim1D && info.dim != SpvDim2D
+          && info.dim != SpvDim3D && info.dim != SpvDimCube) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Image 'Dim' must be 1D, 2D, 3D or Cube: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t coord_type = _.GetOperandTypeId(inst, 3);
+      if (_.HasCapability(SpvCapabilityKernel)) {
+        if (!_.IsFloatScalarOrVectorType(coord_type) &&
+            !_.IsIntScalarOrVectorType(coord_type)) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Coordinate to be int or float scalar or vector: "
+              << spvOpcodeString(opcode);
+        }
+      } else {
+        if (!_.IsFloatScalarOrVectorType(coord_type)) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Expected Coordinate to be float scalar or vector: "
+              << spvOpcodeString(opcode);
+        }
+      }
+
+      const uint32_t min_coord_size = GetPlaneCoordSize(info);
+      const uint32_t actual_coord_size = _.GetDimension(coord_type);
+      if (min_coord_size > actual_coord_size) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Coordinate to have at least " << min_coord_size
+            << " components, but given only " << actual_coord_size << ": "
+            << spvOpcodeString(opcode);
+      }
+      break;
+    }
+
+    case SpvOpImageQueryLevels:
+    case SpvOpImageQuerySamples: {
+      if (!_.IsIntScalarType(result_type)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Result Type to be int scalar type: "
+            << spvOpcodeString(opcode);
+      }
+
+      const uint32_t image_type = _.GetOperandTypeId(inst, 2);
+      if (_.GetIdOpcode(image_type) != SpvOpTypeImage) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Expected Image to be of type OpTypeImage: "
+            << spvOpcodeString(opcode);
+      }
+
+      ImageTypeInfo info;
+      if (!GetImageTypeInfo(_, image_type, &info)) {
+        return _.diag(SPV_ERROR_INVALID_DATA)
+            << "Corrupt image type definition";
+      }
+
+      if (opcode == SpvOpImageQueryLevels) {
+        if (info.dim != SpvDim1D && info.dim != SpvDim2D
+            && info.dim != SpvDim3D && info.dim != SpvDimCube) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Image 'Dim' must be 1D, 2D, 3D or Cube: "
+              << spvOpcodeString(opcode);
+        }
+      } else {
+        assert(opcode == SpvOpImageQuerySamples);
+        if (info.dim != SpvDim2D) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Image 'Dim' must be 2D: " << spvOpcodeString(opcode);
+        }
+
+        if (info.multisampled != 1) {
+          return _.diag(SPV_ERROR_INVALID_DATA)
+              << "Image 'MS' must be 1: " << spvOpcodeString(opcode);
+        }
+      }
+
+      break;
+    }
+
+    default:
+      break;
+  }
+
+  return SPV_SUCCESS;
+}
+
+}  // namespace libspirv
index 50b93be..11e7502 100644 (file)
@@ -98,6 +98,12 @@ add_spvtools_unittest(TARGET val_bitwise
   LIBS ${SPIRV_TOOLS}
 )
 
+add_spvtools_unittest(TARGET val_image
+       SRCS val_image_test.cpp
+       ${VAL_TEST_COMMON_SRCS}
+  LIBS ${SPIRV_TOOLS}
+)
+
 add_spvtools_unittest(TARGET val_limits
        SRCS val_limits_test.cpp
        ${VAL_TEST_COMMON_SRCS}
index 6b9dd25..26a6ec1 100644 (file)
@@ -1402,6 +1402,10 @@ make_pair(string(kOpenCLMemoryModel) +
           MatrixDependencies()))),);
 // clang-format on
 
+#if 0
+// TODO(atgoo@github.com) The following test is not valid as it generates
+// invalid combinations of images, instructions and image operands.
+//
 // Creates assembly containing an OpImageFetch instruction using operands for
 // the image-operands part.  The assembly defines constants %fzero and %izero
 // that can be used for operands where IDs are required.  The assembly is valid,
@@ -1448,6 +1452,7 @@ INSTANTIATE_TEST_CASE_P(
                          vector<string>{"MinLod"}),
                make_pair(ImageOperandsTemplate("Lod|Sample %fzero %izero"),
                          AllCapabilities()))), );
+#endif
 
 // TODO(umar): Instruction capability checks
 
diff --git a/test/val/val_image_test.cpp b/test/val/val_image_test.cpp
new file mode 100644 (file)
index 0000000..38aae0f
--- /dev/null
@@ -0,0 +1,3040 @@
+// Copyright (c) 2017 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Tests for unique type declaration rules validator.
+
+#include <string>
+
+#include "gmock/gmock.h"
+#include "unit_spirv.h"
+#include "val_fixtures.h"
+
+namespace {
+
+using ::testing::HasSubstr;
+using ::testing::Not;
+
+using ValidateImage = spvtest::ValidateBase<bool>;
+
+std::string GenerateShaderCode(
+    const std::string& body,
+    const std::string& capabilities_and_extensions = "") {
+  const std::string capabilities =
+R"(
+OpCapability Shader
+OpCapability InputAttachment
+OpCapability ImageGatherExtended
+OpCapability MinLod
+OpCapability Sampled1D
+OpCapability SampledRect
+OpCapability ImageQuery)";
+
+  const std::string after_extension_before_body =
+R"(
+OpMemoryModel Logical GLSL450
+OpEntryPoint Fragment %main "main"
+%void = OpTypeVoid
+%func = OpTypeFunction %void
+%bool = OpTypeBool
+%f32 = OpTypeFloat 32
+%u32 = OpTypeInt 32 0
+%s32 = OpTypeInt 32 1
+%s32vec2 = OpTypeVector %s32 2
+%u32vec2 = OpTypeVector %u32 2
+%f32vec2 = OpTypeVector %f32 2
+%u32vec3 = OpTypeVector %u32 3
+%s32vec3 = OpTypeVector %s32 3
+%f32vec3 = OpTypeVector %f32 3
+%u32vec4 = OpTypeVector %u32 4
+%s32vec4 = OpTypeVector %s32 4
+%f32vec4 = OpTypeVector %f32 4
+
+%f32_0 = OpConstant %f32 0
+%f32_1 = OpConstant %f32 1
+%f32_0_5 = OpConstant %f32 0.5
+%f32_0_25 = OpConstant %f32 0.25
+%f32_0_75 = OpConstant %f32 0.75
+
+%s32_0 = OpConstant %s32 0
+%s32_1 = OpConstant %s32 1
+%s32_2 = OpConstant %s32 2
+%s32_3 = OpConstant %s32 3
+%s32_4 = OpConstant %s32 4
+%s32_m1 = OpConstant %s32 -1
+
+%u32_0 = OpConstant %u32 0
+%u32_1 = OpConstant %u32 1
+%u32_2 = OpConstant %u32 2
+%u32_3 = OpConstant %u32 3
+%u32_4 = OpConstant %u32 4
+
+%u32vec2arr4 = OpTypeArray %u32vec2 %u32_4
+%u32vec2arr3 = OpTypeArray %u32vec2 %u32_3
+%u32arr4 = OpTypeArray %u32 %u32_4
+%u32vec3arr4 = OpTypeArray %u32vec3 %u32_4
+
+%u32vec2_01 = OpConstantComposite %u32vec2 %u32_0 %u32_1
+%u32vec2_12 = OpConstantComposite %u32vec2 %u32_1 %u32_2
+%u32vec3_012 = OpConstantComposite %u32vec3 %u32_0 %u32_1 %u32_2
+%u32vec3_123 = OpConstantComposite %u32vec3 %u32_1 %u32_2 %u32_3
+%u32vec4_0123 = OpConstantComposite %u32vec4 %u32_0 %u32_1 %u32_2 %u32_3
+%u32vec4_1234 = OpConstantComposite %u32vec4 %u32_1 %u32_2 %u32_3 %u32_4
+
+%s32vec2_01 = OpConstantComposite %s32vec2 %s32_0 %s32_1
+%s32vec2_12 = OpConstantComposite %s32vec2 %s32_1 %s32_2
+%s32vec3_012 = OpConstantComposite %s32vec3 %s32_0 %s32_1 %s32_2
+%s32vec3_123 = OpConstantComposite %s32vec3 %s32_1 %s32_2 %s32_3
+%s32vec4_0123 = OpConstantComposite %s32vec4 %s32_0 %s32_1 %s32_2 %s32_3
+%s32vec4_1234 = OpConstantComposite %s32vec4 %s32_1 %s32_2 %s32_3 %s32_4
+
+%f32vec2_00 = OpConstantComposite %f32vec2 %f32_0 %f32_0
+%f32vec2_01 = OpConstantComposite %f32vec2 %f32_0 %f32_1
+%f32vec2_10 = OpConstantComposite %f32vec2 %f32_1 %f32_0
+%f32vec2_11 = OpConstantComposite %f32vec2 %f32_1 %f32_1
+%f32vec2_hh = OpConstantComposite %f32vec2 %f32_0_5 %f32_0_5
+
+%f32vec3_000 = OpConstantComposite %f32vec3 %f32_0 %f32_0 %f32_0
+%f32vec3_hhh = OpConstantComposite %f32vec3 %f32_0_5 %f32_0_5 %f32_0_5
+
+%f32vec4_0000 = OpConstantComposite %f32vec4 %f32_0 %f32_0 %f32_0 %f32_0
+
+%const_offsets = OpConstantComposite %u32vec2arr4 %u32vec2_01 %u32vec2_12 %u32vec2_01 %u32vec2_12
+%const_offsets3x2 = OpConstantComposite %u32vec2arr3 %u32vec2_01 %u32vec2_12 %u32vec2_01
+%const_offsets4xu = OpConstantComposite %u32arr4 %u32_0 %u32_0 %u32_0 %u32_0
+%const_offsets4x3 = OpConstantComposite %u32vec3arr4 %u32vec3_012 %u32vec3_012 %u32vec3_012 %u32vec3_012
+
+%type_image_f32_1d_0001 = OpTypeImage %f32 1D 0 0 0 1 Unknown
+%ptr_image_f32_1d_0001 = OpTypePointer UniformConstant %type_image_f32_1d_0001
+%uniform_image_f32_1d_0001 = OpVariable %ptr_image_f32_1d_0001 UniformConstant
+%type_sampled_image_f32_1d_0001 = OpTypeSampledImage %type_image_f32_1d_0001
+
+%type_image_f32_1d_0002_rgba32f = OpTypeImage %f32 1D 0 0 0 2 Rgba32f
+%ptr_image_f32_1d_0002_rgba32f = OpTypePointer UniformConstant %type_image_f32_1d_0002_rgba32f
+%uniform_image_f32_1d_0002_rgba32f = OpVariable %ptr_image_f32_1d_0002_rgba32f UniformConstant
+%type_sampled_image_f32_1d_0002_rgba32f = OpTypeSampledImage %type_image_f32_1d_0002_rgba32f
+
+%type_image_f32_2d_0001 = OpTypeImage %f32 2D 0 0 0 1 Unknown
+%ptr_image_f32_2d_0001 = OpTypePointer UniformConstant %type_image_f32_2d_0001
+%uniform_image_f32_2d_0001 = OpVariable %ptr_image_f32_2d_0001 UniformConstant
+%type_sampled_image_f32_2d_0001 = OpTypeSampledImage %type_image_f32_2d_0001
+
+%type_image_f32_2d_0010 = OpTypeImage %f32 2D 0 0 1 0 Unknown
+%ptr_image_f32_2d_0010 = OpTypePointer UniformConstant %type_image_f32_2d_0010
+%uniform_image_f32_2d_0010 = OpVariable %ptr_image_f32_2d_0010 UniformConstant
+%type_sampled_image_f32_2d_0010 = OpTypeSampledImage %type_image_f32_2d_0010
+
+%type_image_u32_2d_0001 = OpTypeImage %u32 2D 0 0 0 1 Unknown
+%ptr_image_u32_2d_0001 = OpTypePointer UniformConstant %type_image_u32_2d_0001
+%uniform_image_u32_2d_0001 = OpVariable %ptr_image_u32_2d_0001 UniformConstant
+%type_sampled_image_u32_2d_0001 = OpTypeSampledImage %type_image_u32_2d_0001
+
+%type_image_u32_2d_0000 = OpTypeImage %u32 2D 0 0 0 0 Unknown
+%ptr_image_u32_2d_0000 = OpTypePointer UniformConstant %type_image_u32_2d_0000
+%uniform_image_u32_2d_0000 = OpVariable %ptr_image_u32_2d_0000 UniformConstant
+%type_sampled_image_u32_2d_0000 = OpTypeSampledImage %type_image_u32_2d_0000
+
+%type_image_s32_3d_0001 = OpTypeImage %s32 3D 0 0 0 1 Unknown
+%ptr_image_s32_3d_0001 = OpTypePointer UniformConstant %type_image_s32_3d_0001
+%uniform_image_s32_3d_0001 = OpVariable %ptr_image_s32_3d_0001 UniformConstant
+%type_sampled_image_s32_3d_0001 = OpTypeSampledImage %type_image_s32_3d_0001
+
+%type_image_void_2d_0001 = OpTypeImage %void 2D 0 0 0 1 Unknown
+%ptr_image_void_2d_0001 = OpTypePointer UniformConstant %type_image_void_2d_0001
+%uniform_image_void_2d_0001 = OpVariable %ptr_image_void_2d_0001 UniformConstant
+%type_sampled_image_void_2d_0001 = OpTypeSampledImage %type_image_void_2d_0001
+
+%type_image_void_2d_0002 = OpTypeImage %void 2D 0 0 0 2 Unknown
+%ptr_image_void_2d_0002 = OpTypePointer UniformConstant %type_image_void_2d_0002
+%uniform_image_void_2d_0002 = OpVariable %ptr_image_void_2d_0002 UniformConstant
+%type_sampled_image_void_2d_0002 = OpTypeSampledImage %type_image_void_2d_0002
+
+%type_image_f32_2d_0002 = OpTypeImage %f32 2D 0 0 0 2 Unknown
+%ptr_image_f32_2d_0002 = OpTypePointer UniformConstant %type_image_f32_2d_0002
+%uniform_image_f32_2d_0002 = OpVariable %ptr_image_f32_2d_0001 UniformConstant
+%type_sampled_image_f32_2d_0002 = OpTypeSampledImage %type_image_f32_2d_0002
+
+%type_image_f32_spd_0001 = OpTypeImage %f32 SubpassData 0 0 0 1 Unknown
+%ptr_image_f32_spd_0001 = OpTypePointer UniformConstant %type_image_f32_spd_0001
+%uniform_image_f32_spd_0001 = OpVariable %ptr_image_f32_spd_0001 UniformConstant
+%type_sampled_image_f32_spd_0001 = OpTypeSampledImage %type_image_f32_spd_0001
+
+%type_image_f32_spd_0002 = OpTypeImage %f32 SubpassData 0 0 0 2 Unknown
+%ptr_image_f32_spd_0002 = OpTypePointer UniformConstant %type_image_f32_spd_0002
+%uniform_image_f32_spd_0002 = OpVariable %ptr_image_f32_spd_0002 UniformConstant
+%type_sampled_image_f32_spd_0002 = OpTypeSampledImage %type_image_f32_spd_0002
+
+%type_image_f32_3d_0111 = OpTypeImage %f32 3D 0 1 1 1 Unknown
+%ptr_image_f32_3d_0111 = OpTypePointer UniformConstant %type_image_f32_3d_0111
+%uniform_image_f32_3d_0111 = OpVariable %ptr_image_f32_3d_0111 UniformConstant
+%type_sampled_image_f32_3d_0111 = OpTypeSampledImage %type_image_f32_3d_0111
+
+%type_image_f32_cube_0101 = OpTypeImage %f32 Cube 0 1 0 1 Unknown
+%ptr_image_f32_cube_0101 = OpTypePointer UniformConstant %type_image_f32_cube_0101
+%uniform_image_f32_cube_0101 = OpVariable %ptr_image_f32_cube_0101 UniformConstant
+%type_sampled_image_f32_cube_0101 = OpTypeSampledImage %type_image_f32_cube_0101
+
+%type_image_f32_cube_0102_rgba32f = OpTypeImage %f32 Cube 0 1 0 2 Rgba32f
+%ptr_image_f32_cube_0102_rgba32f = OpTypePointer UniformConstant %type_image_f32_cube_0102_rgba32f
+%uniform_image_f32_cube_0102_rgba32f = OpVariable %ptr_image_f32_cube_0102_rgba32f UniformConstant
+%type_sampled_image_f32_cube_0102_rgba32f = OpTypeSampledImage %type_image_f32_cube_0102_rgba32f
+
+%type_image_f32_rect_0001 = OpTypeImage %f32 Rect 0 0 0 1 Unknown
+%ptr_image_f32_rect_0001 = OpTypePointer UniformConstant %type_image_f32_rect_0001
+%uniform_image_f32_rect_0001 = OpVariable %ptr_image_f32_rect_0001 UniformConstant
+%type_sampled_image_f32_rect_0001 = OpTypeSampledImage %type_image_f32_rect_0001
+
+%type_sampler = OpTypeSampler
+%ptr_sampler = OpTypePointer UniformConstant %type_sampler
+%uniform_sampler = OpVariable %ptr_sampler UniformConstant
+
+%main = OpFunction %void None %func
+%main_entry = OpLabel)";
+
+  const std::string after_body =
+R"(
+OpReturn
+OpFunctionEnd)";
+
+  return capabilities + capabilities_and_extensions +
+      after_extension_before_body + body + after_body;
+}
+
+std::string GenerateKernelCode(
+    const std::string& body,
+    const std::string& capabilities_and_extensions = "") {
+  const std::string capabilities =
+R"(
+OpCapability Addresses
+OpCapability Kernel
+OpCapability Linkage
+OpCapability ImageQuery
+OpCapability ImageGatherExtended
+OpCapability InputAttachment
+OpCapability SampledRect)";
+
+  const std::string after_extension_before_body =
+R"(
+OpMemoryModel Physical32 OpenCL
+%void = OpTypeVoid
+%func = OpTypeFunction %void
+%bool = OpTypeBool
+%f32 = OpTypeFloat 32
+%u32 = OpTypeInt 32 0
+%u32vec2 = OpTypeVector %u32 2
+%f32vec2 = OpTypeVector %f32 2
+%u32vec3 = OpTypeVector %u32 3
+%f32vec3 = OpTypeVector %f32 3
+%u32vec4 = OpTypeVector %u32 4
+%f32vec4 = OpTypeVector %f32 4
+
+%f32_0 = OpConstant %f32 0
+%f32_1 = OpConstant %f32 1
+%f32_0_5 = OpConstant %f32 0.5
+%f32_0_25 = OpConstant %f32 0.25
+%f32_0_75 = OpConstant %f32 0.75
+
+%u32_0 = OpConstant %u32 0
+%u32_1 = OpConstant %u32 1
+%u32_2 = OpConstant %u32 2
+%u32_3 = OpConstant %u32 3
+%u32_4 = OpConstant %u32 4
+
+%u32vec2_01 = OpConstantComposite %u32vec2 %u32_0 %u32_1
+%u32vec2_12 = OpConstantComposite %u32vec2 %u32_1 %u32_2
+%u32vec3_012 = OpConstantComposite %u32vec3 %u32_0 %u32_1 %u32_2
+%u32vec3_123 = OpConstantComposite %u32vec3 %u32_1 %u32_2 %u32_3
+%u32vec4_0123 = OpConstantComposite %u32vec4 %u32_0 %u32_1 %u32_2 %u32_3
+%u32vec4_1234 = OpConstantComposite %u32vec4 %u32_1 %u32_2 %u32_3 %u32_4
+
+%f32vec2_00 = OpConstantComposite %f32vec2 %f32_0 %f32_0
+%f32vec2_01 = OpConstantComposite %f32vec2 %f32_0 %f32_1
+%f32vec2_10 = OpConstantComposite %f32vec2 %f32_1 %f32_0
+%f32vec2_11 = OpConstantComposite %f32vec2 %f32_1 %f32_1
+%f32vec2_hh = OpConstantComposite %f32vec2 %f32_0_5 %f32_0_5
+
+%f32vec3_000 = OpConstantComposite %f32vec3 %f32_0 %f32_0 %f32_0
+%f32vec3_hhh = OpConstantComposite %f32vec3 %f32_0_5 %f32_0_5 %f32_0_5
+
+%f32vec4_0000 = OpConstantComposite %f32vec4 %f32_0 %f32_0 %f32_0 %f32_0
+
+%type_image_f32_2d_0001 = OpTypeImage %f32 2D 0 0 0 1 Unknown
+%ptr_image_f32_2d_0001 = OpTypePointer UniformConstant %type_image_f32_2d_0001
+%uniform_image_f32_2d_0001 = OpVariable %ptr_image_f32_2d_0001 UniformConstant
+%type_sampled_image_f32_2d_0001 = OpTypeSampledImage %type_image_f32_2d_0001
+
+%type_image_f32_2d_0010 = OpTypeImage %f32 2D 0 0 1 0 Unknown
+%ptr_image_f32_2d_0010 = OpTypePointer UniformConstant %type_image_f32_2d_0010
+%uniform_image_f32_2d_0010 = OpVariable %ptr_image_f32_2d_0010 UniformConstant
+%type_sampled_image_f32_2d_0010 = OpTypeSampledImage %type_image_f32_2d_0010
+
+%type_image_f32_3d_0010 = OpTypeImage %f32 3D 0 0 1 0 Unknown
+%ptr_image_f32_3d_0010 = OpTypePointer UniformConstant %type_image_f32_3d_0010
+%uniform_image_f32_3d_0010 = OpVariable %ptr_image_f32_3d_0010 UniformConstant
+%type_sampled_image_f32_3d_0010 = OpTypeSampledImage %type_image_f32_3d_0010
+
+%type_image_f32_rect_0001 = OpTypeImage %f32 Rect 0 0 0 1 Unknown
+%ptr_image_f32_rect_0001 = OpTypePointer UniformConstant %type_image_f32_rect_0001
+%uniform_image_f32_rect_0001 = OpVariable %ptr_image_f32_rect_0001 UniformConstant
+%type_sampled_image_f32_rect_0001 = OpTypeSampledImage %type_image_f32_rect_0001
+
+%type_sampler = OpTypeSampler
+%ptr_sampler = OpTypePointer UniformConstant %type_sampler
+%uniform_sampler = OpVariable %ptr_sampler UniformConstant
+
+%main = OpFunction %void None %func
+%main_entry = OpLabel)";
+
+  const std::string after_body =
+R"(
+OpReturn
+OpFunctionEnd)";
+
+  return capabilities + capabilities_and_extensions +
+      after_extension_before_body + body + after_body;
+}
+
+TEST_F(ValidateImage, SampledImageSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampledImageWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_image_f32_2d_0001 %img %sampler
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be OpTypeSampledImage: SampledImage"));
+}
+
+TEST_F(ValidateImage, SampledImageNotImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg1 = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%simg2 = OpSampledImage %type_sampled_image_f32_2d_0001 %simg1 %sampler
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image to be of type OpTypeImage: SampledImage"));
+}
+
+TEST_F(ValidateImage, SampledImageImageNotForSampling) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0002 %uniform_image_f32_2d_0002
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0002 %img %sampler
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled' parameter to be 0 or 1: SampledImage"));
+}
+
+TEST_F(ValidateImage, SampledImageImageDimSubpassData) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_spd_0001 %uniform_image_f32_spd_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_spd_0001 %img %sampler
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Dim' parameter to be not SubpassData"));
+}
+
+TEST_F(ValidateImage, SampledImageNotSampler) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %img
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sampler to be of type OpTypeSampler: SampledImage"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh
+%res2 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh Bias %f32_0_25
+%res4 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh ConstOffset %s32vec2_01
+%res5 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh Offset %s32vec2_01
+%res6 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh MinLod %f32_0_5
+%res7 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh Bias|Offset|MinLod %f32_0_25 %s32vec2_01 %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleImplicitLodWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleImplicitLod %f32 %simg %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float vector type: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodWrongNumComponentsResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleImplicitLod %f32vec3 %simg %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to have 4 components: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageSampleImplicitLod %f32vec4 %img %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sampled Image to be of type OpTypeSampledImage: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleImplicitLod %u32vec4 %simg %f32vec2_00
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type components: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageSampleImplicitLod %u32vec4 %simg %f32vec2_00
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleImplicitLodWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleImplicitLod %f32vec4 %simg %img
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be float scalar or vector: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleImplicitLod %f32vec4 %simg %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 2 components, but given only 1: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodSuccessShader) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec4_0000 Lod %f32_1
+%res2 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_hh Grad %f32vec2_10 %f32vec2_01
+%res3 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_hh ConstOffset %s32vec2_01
+%res4 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec3_hhh Offset %s32vec2_01
+%res5 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_hh Grad|Offset|MinLod %f32vec2_10 %f32vec2_01 %s32vec2_01 %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleExplicitLodSuccessKernel) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %u32vec4_0123 Lod %f32_1
+%res2 = OpImageSampleExplicitLod %f32vec4 %simg %u32vec2_01 Grad %f32vec2_10 %f32vec2_01
+%res3 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_hh ConstOffset %u32vec2_01
+%res4 = OpImageSampleExplicitLod %f32vec4 %simg %u32vec2_01 Offset %u32vec2_01
+%res5 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_hh Grad|Offset %f32vec2_10 %f32vec2_01 %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleExplicitLodSuccessCubeArrayed) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec4_0000 Grad %f32vec3_hhh %f32vec3_hhh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleExplicitLodWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32 %simg %f32vec2_hh Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float vector type: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodWrongNumComponentsResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec3 %simg %f32vec2_hh Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to have 4 components: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageSampleExplicitLod %f32vec4 %img %f32vec2_hh Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sampled Image to be of type OpTypeSampledImage: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %u32vec4 %simg %f32vec2_00 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type components: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %u32vec4 %simg %f32vec2_00 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleExplicitLodWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %img Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be float scalar or vector: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32_0_5 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 2 components, but given only 1: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodBias) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_00 Bias|Lod %f32_1 %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Bias can only be used with ImplicitLod opcodes: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, LodAndGrad) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_00 Lod|Grad %f32_1 %f32vec2_hh %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand bits Lod and Grad cannot be set at the same time: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, ImplicitLodWithLod) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res2 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh Lod %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Lod cannot be used with ImplicitLod opcodes: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, LodWrongType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_00 Lod %f32vec2_hh)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand Lod to be int or float scalar: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, LodWrongDim) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_rect_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_00 Lod %f32_0)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Lod requires 'Dim' parameter to be 1D, 2D, 3D or Cube: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, LodMultisampled) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0010 %uniform_image_f32_2d_0010
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0010 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_00 Lod %f32_0)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Lod requires 'MS' parameter to be 0: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, MinLodIncompatible) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_00 Lod|MinLod %f32_0 %f32_0)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand MinLod can only be used with ImplicitLod opcodes or "
+      "together with Image Operand Grad: ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, ImplicitLodWithGrad) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res2 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh Grad %f32vec2_hh %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Grad can only be used with ExplicitLod opcodes: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLod3DArrayedMultisampledSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0111 %uniform_image_f32_3d_0111
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_3d_0111 %img %sampler
+%res1 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000
+%res2 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 ConstOffset %s32vec3_012
+%res3 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 Offset %s32vec3_012
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleImplicitLodCubeArrayedSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000
+%res2 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 Bias %f32_0_25
+%res4 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 MinLod %f32_0_5
+%res5 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 Bias|MinLod %f32_0_25 %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleImplicitLodBiasWrongType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res2 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh Bias %u32_0
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand Bias to be float scalar: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodBiasWrongDim) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_rect_0001 %img %sampler
+%res2 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh Bias %f32_0
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Bias requires 'Dim' parameter to be 1D, 2D, 3D or Cube: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodBiasMultisampled) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0111 %uniform_image_f32_3d_0111
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_3d_0111 %img %sampler
+%res1 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 Bias %f32_0_25
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Bias requires 'MS' parameter to be 0: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodGradDxWrongType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec4_0000 Grad %s32vec3_012 %f32vec3_hhh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected both Image Operand Grad ids to be float scalars or vectors: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodGradDyWrongType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec4_0000 Grad  %f32vec3_hhh %s32vec3_012
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected both Image Operand Grad ids to be float scalars or vectors: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodGradDxWrongSize) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec4_0000 Grad %f32vec2_00 %f32vec3_hhh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand Grad dx to have 3 components, but given 2: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodGradDyWrongSize) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec4_0000 Grad %f32vec3_hhh %f32vec2_00
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand Grad dy to have 3 components, but given 2: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleExplicitLodGradMultisampled) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0111 %uniform_image_f32_3d_0111
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_3d_0111 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec4_0000 Grad %f32vec3_000 %f32vec3_000
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Grad requires 'MS' parameter to be 0: "
+      "ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodConstOffsetCubeDim) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res4 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 ConstOffset %s32vec3_012
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand ConstOffset cannot be used with Cube Image 'Dim': "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodConstOffsetWrongType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0111 %uniform_image_f32_3d_0111
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_3d_0111 %img %sampler
+%res4 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 ConstOffset %f32vec3_000
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand ConstOffset to be int scalar or vector: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodConstOffsetWrongSize) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0111 %uniform_image_f32_3d_0111
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_3d_0111 %img %sampler
+%res4 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 ConstOffset %s32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand ConstOffset to have 3 components, but given 2: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodConstOffsetNotConst) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0111 %uniform_image_f32_3d_0111
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_3d_0111 %img %sampler
+%offset = OpSNegate %s32vec3 %s32vec3_012
+%res4 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 ConstOffset %offset
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand ConstOffset to be a const object: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodOffsetCubeDim) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res4 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 Offset %s32vec3_012
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Offset cannot be used with Cube Image 'Dim': "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodOffsetWrongType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0111 %uniform_image_f32_3d_0111
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_3d_0111 %img %sampler
+%res4 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 Offset %f32vec3_000
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand Offset to be int scalar or vector: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodOffsetWrongSize) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0111 %uniform_image_f32_3d_0111
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_3d_0111 %img %sampler
+%res4 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 Offset %s32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand Offset to have 3 components, but given 2: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodMoreThanOneOffset) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0111 %uniform_image_f32_3d_0111
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_3d_0111 %img %sampler
+%res4 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 ConstOffset|Offset %s32vec3_012 %s32vec3_012
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operands Offset, ConstOffset, ConstOffsets cannot be used together: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodMinLodWrongType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 MinLod %s32_0
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand MinLod to be float scalar: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodMinLodWrongDim) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_rect_0001 %img %sampler
+%res2 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh MinLod %f32_0_25
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand MinLod requires 'Dim' parameter to be 1D, 2D, 3D or Cube: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImplicitLodMinLodMultisampled) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0111 %uniform_image_f32_3d_0111
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_3d_0111 %img %sampler
+%res1 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec4_0000 MinLod %f32_0_25
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand MinLod requires 'MS' parameter to be 0: "
+      "ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjExplicitLodSuccess2D) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjExplicitLod %f32vec4 %simg %f32vec3_hhh Lod %f32_1
+%res3 = OpImageSampleProjExplicitLod %f32vec4 %simg %f32vec3_hhh Grad %f32vec2_10 %f32vec2_01
+%res4 = OpImageSampleProjExplicitLod %f32vec4 %simg %f32vec3_hhh ConstOffset %s32vec2_01
+%res5 = OpImageSampleProjExplicitLod %f32vec4 %simg %f32vec3_hhh Offset %s32vec2_01
+%res7 = OpImageSampleProjExplicitLod %f32vec4 %simg %f32vec3_hhh Grad|Offset %f32vec2_10 %f32vec2_01 %s32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleProjExplicitLodSuccessRect) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_rect_0001 %img %sampler
+%res1 = OpImageSampleProjExplicitLod %f32vec4 %simg %f32vec3_hhh Grad %f32vec2_10 %f32vec2_01
+%res2 = OpImageSampleProjExplicitLod %f32vec4 %simg %f32vec3_hhh Grad|Offset %f32vec2_10 %f32vec2_01 %s32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleProjExplicitLodWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjExplicitLod %f32 %simg %f32vec3_hhh Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float vector type: "
+      "ImageSampleProjExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjExplicitLodWrongNumComponentsResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjExplicitLod %f32vec3 %simg %f32vec3_hhh Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to have 4 components: "
+      "ImageSampleProjExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjExplicitLodNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageSampleProjExplicitLod %f32vec4 %img %f32vec3_hhh Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sampled Image to be of type OpTypeSampledImage: "
+      "ImageSampleProjExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjExplicitLodWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjExplicitLod %u32vec4 %simg %f32vec3_hhh Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type components: "
+      "ImageSampleProjExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjExplicitLodVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageSampleProjExplicitLod %u32vec4 %simg %f32vec3_hhh Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleProjExplicitLodWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjExplicitLod %f32vec4 %simg %img Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be float scalar or vector: "
+      "ImageSampleProjExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjExplicitLodCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjExplicitLod %f32vec4 %simg %f32vec2_hh Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 3 components, but given only 2: "
+      "ImageSampleProjExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjImplicitLodSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjImplicitLod %f32vec4 %simg %f32vec3_hhh
+%res2 = OpImageSampleProjImplicitLod %f32vec4 %simg %f32vec3_hhh Bias %f32_0_25
+%res4 = OpImageSampleProjImplicitLod %f32vec4 %simg %f32vec3_hhh ConstOffset %s32vec2_01
+%res5 = OpImageSampleProjImplicitLod %f32vec4 %simg %f32vec3_hhh Offset %s32vec2_01
+%res6 = OpImageSampleProjImplicitLod %f32vec4 %simg %f32vec3_hhh MinLod %f32_0_5
+%res7 = OpImageSampleProjImplicitLod %f32vec4 %simg %f32vec3_hhh Bias|Offset|MinLod %f32_0_25 %s32vec2_01 %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleProjImplicitLodWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjImplicitLod %f32 %simg %f32vec3_hhh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float vector type: "
+      "ImageSampleProjImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjImplicitLodWrongNumComponentsResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjImplicitLod %f32vec3 %simg %f32vec3_hhh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to have 4 components: "
+      "ImageSampleProjImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjImplicitLodNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageSampleProjImplicitLod %f32vec4 %img %f32vec3_hhh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sampled Image to be of type OpTypeSampledImage: "
+      "ImageSampleProjImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjImplicitLodWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjImplicitLod %u32vec4 %simg %f32vec3_hhh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type components: "
+      "ImageSampleProjImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjImplicitLodVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageSampleProjImplicitLod %u32vec4 %simg %f32vec3_hhh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleProjImplicitLodWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjImplicitLod %f32vec4 %simg %img
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be float scalar or vector: "
+      "ImageSampleProjImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjImplicitLodCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjImplicitLod %f32vec4 %simg %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 3 components, but given only 2: "
+      "ImageSampleProjImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefImplicitLodSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0001 %uniform_image_u32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_u32_2d_0001 %img %sampler
+%res1 = OpImageSampleDrefImplicitLod %u32 %simg %f32vec2_hh %u32_1
+%res2 = OpImageSampleDrefImplicitLod %u32 %simg %f32vec2_hh %u32_1 Bias %f32_0_25
+%res4 = OpImageSampleDrefImplicitLod %u32 %simg %f32vec2_hh %u32_1 ConstOffset %s32vec2_01
+%res5 = OpImageSampleDrefImplicitLod %u32 %simg %f32vec2_hh %u32_1 Offset %s32vec2_01
+%res6 = OpImageSampleDrefImplicitLod %u32 %simg %f32vec2_hh %u32_1 MinLod %f32_0_5
+%res7 = OpImageSampleDrefImplicitLod %u32 %simg %f32vec2_hh %u32_1 Bias|Offset|MinLod %f32_0_25 %s32vec2_01 %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleDrefImplicitLodWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageSampleDrefImplicitLod %void %simg %f32vec2_hh %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float scalar type: "
+      "ImageSampleDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefImplicitLodNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0001 %uniform_image_u32_2d_0001
+%res1 = OpImageSampleDrefImplicitLod %u32 %img %f32vec2_hh %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sampled Image to be of type OpTypeSampledImage: "
+      "ImageSampleDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefImplicitLodWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0001 %uniform_image_u32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_u32_2d_0001 %img %sampler
+%res1 = OpImageSampleDrefImplicitLod %f32 %simg %f32vec2_00 %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type: "
+      "ImageSampleDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefImplicitLodVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageSampleDrefImplicitLod %u32 %simg %f32vec2_00 %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type: "
+      "ImageSampleDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefImplicitLodWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0001 %uniform_image_u32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_u32_2d_0001 %img %sampler
+%res1 = OpImageSampleDrefImplicitLod %u32 %simg %img %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be float scalar or vector: "
+      "ImageSampleDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefImplicitLodCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleDrefImplicitLod %f32 %simg %f32_0_5 %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 2 components, but given only 1: "
+      "ImageSampleDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefImplicitLodWrongDrefType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0001 %uniform_image_u32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_u32_2d_0001 %img %sampler
+%res1 = OpImageSampleDrefImplicitLod %u32 %simg %f32vec2_00 %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Dref to be of Image 'Sampled Type': "
+      "ImageSampleDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefExplicitLodSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_s32_3d_0001 %uniform_image_s32_3d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_s32_3d_0001 %img %sampler
+%res1 = OpImageSampleDrefExplicitLod %s32 %simg %f32vec4_0000 %s32_1 Lod %f32_1
+%res3 = OpImageSampleDrefExplicitLod %s32 %simg %f32vec3_hhh %s32_1 Grad %f32vec3_hhh %f32vec3_hhh
+%res4 = OpImageSampleDrefExplicitLod %s32 %simg %f32vec3_hhh %s32_1 ConstOffset %s32vec3_012
+%res5 = OpImageSampleDrefExplicitLod %s32 %simg %f32vec4_0000 %s32_1 Offset %s32vec3_012
+%res7 = OpImageSampleDrefExplicitLod %s32 %simg %f32vec3_hhh %s32_1 Grad|Offset %f32vec3_hhh %f32vec3_hhh %s32vec3_012
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleDrefExplicitLodWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_s32_3d_0001 %uniform_image_s32_3d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_s32_3d_0001 %img %sampler
+%res1 = OpImageSampleDrefExplicitLod %bool %simg %f32vec3_hhh %s32_1 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float scalar type: "
+      "ImageSampleDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefExplicitLodNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_s32_3d_0001 %uniform_image_s32_3d_0001
+%res1 = OpImageSampleDrefExplicitLod %s32 %img %f32vec3_hhh %s32_1 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sampled Image to be of type OpTypeSampledImage: "
+      "ImageSampleDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefExplicitLodWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_s32_3d_0001 %uniform_image_s32_3d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_s32_3d_0001 %img %sampler
+%res1 = OpImageSampleDrefExplicitLod %f32 %simg %f32vec3_hhh %s32_1 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type: "
+      "ImageSampleDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefExplicitLodVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageSampleDrefExplicitLod %u32 %simg %f32vec2_00 %s32_1 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type: "
+      "ImageSampleDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefExplicitLodWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_s32_3d_0001 %uniform_image_s32_3d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_s32_3d_0001 %img %sampler
+%res1 = OpImageSampleDrefExplicitLod %s32 %simg %img %s32_1 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be float scalar or vector: "
+      "ImageSampleDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefExplicitLodCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_s32_3d_0001 %uniform_image_s32_3d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_s32_3d_0001 %img %sampler
+%res1 = OpImageSampleDrefExplicitLod %s32 %simg %f32vec2_hh %s32_1 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 3 components, but given only 2: "
+      "ImageSampleDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleDrefExplicitLodWrongDrefType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_s32_3d_0001 %uniform_image_s32_3d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_s32_3d_0001 %img %sampler
+%res1 = OpImageSampleDrefExplicitLod %s32 %simg %f32vec3_hhh %f32_1 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Dref to be of Image 'Sampled Type': "
+      "ImageSampleDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefImplicitLodSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefImplicitLod %f32 %simg %f32vec3_hhh %f32_0_5
+%res2 = OpImageSampleProjDrefImplicitLod %f32 %simg %f32vec3_hhh %f32_0_5 Bias %f32_0_25
+%res4 = OpImageSampleProjDrefImplicitLod %f32 %simg %f32vec3_hhh %f32_0_5 ConstOffset %s32vec2_01
+%res5 = OpImageSampleProjDrefImplicitLod %f32 %simg %f32vec3_hhh %f32_0_5 Offset %s32vec2_01
+%res6 = OpImageSampleProjDrefImplicitLod %f32 %simg %f32vec3_hhh %f32_0_5 MinLod %f32_0_5
+%res7 = OpImageSampleProjDrefImplicitLod %f32 %simg %f32vec3_hhh %f32_0_5 Bias|Offset|MinLod %f32_0_25 %s32vec2_01 %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleProjDrefImplicitLodWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefImplicitLod %void %simg %f32vec3_hhh %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float scalar type: "
+      "ImageSampleProjDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefImplicitLodNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageSampleProjDrefImplicitLod %f32 %img %f32vec3_hhh %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sampled Image to be of type OpTypeSampledImage: "
+      "ImageSampleProjDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefImplicitLodWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefImplicitLod %u32 %simg %f32vec3_hhh %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type: "
+      "ImageSampleProjDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefImplicitLodVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefImplicitLod %u32 %simg %f32vec3_hhh %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type: "
+      "ImageSampleProjDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefImplicitLodWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefImplicitLod %f32 %simg %img %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be float scalar or vector: "
+      "ImageSampleProjDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefImplicitLodCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefImplicitLod %f32 %simg %f32vec2_hh %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 3 components, but given only 2: "
+      "ImageSampleProjDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefImplicitLodWrongDrefType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0001 %uniform_image_u32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_u32_2d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefImplicitLod %u32 %simg %f32vec3_hhh %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Dref to be of Image 'Sampled Type': "
+      "ImageSampleProjDrefImplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefExplicitLodSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_1d_0001 %uniform_image_f32_1d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_1d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefExplicitLod %f32 %simg %f32vec2_hh %f32_0_5 Lod %f32_1
+%res2 = OpImageSampleProjDrefExplicitLod %f32 %simg %f32vec3_hhh %f32_0_5 Grad %f32_0_5 %f32_0_5
+%res3 = OpImageSampleProjDrefExplicitLod %f32 %simg %f32vec2_hh %f32_0_5 ConstOffset %s32_1
+%res4 = OpImageSampleProjDrefExplicitLod %f32 %simg %f32vec2_hh %f32_0_5 Offset %s32_1
+%res5 = OpImageSampleProjDrefExplicitLod %f32 %simg %f32vec2_hh %f32_0_5 Grad|Offset %f32_0_5 %f32_0_5 %s32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleProjDrefExplicitLodWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_1d_0001 %uniform_image_f32_1d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_1d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefExplicitLod %bool %simg %f32vec2_hh %f32_0_5 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float scalar type: "
+      "ImageSampleProjDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefExplicitLodNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_1d_0001 %uniform_image_f32_1d_0001
+%res1 = OpImageSampleProjDrefExplicitLod %f32 %img %f32vec2_hh %f32_0_5 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sampled Image to be of type OpTypeSampledImage: "
+      "ImageSampleProjDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefExplicitLodWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_1d_0001 %uniform_image_f32_1d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_1d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefExplicitLod %u32 %simg %f32vec2_hh %f32_0_5 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type: "
+      "ImageSampleProjDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefExplicitLodVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefExplicitLod %u32 %simg %f32vec3_hhh %f32_0_5 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type: "
+      "ImageSampleProjDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefExplicitLodWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_1d_0001 %uniform_image_f32_1d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_1d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefExplicitLod %f32 %simg %img %f32_0_5 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be float scalar or vector: "
+      "ImageSampleProjDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleProjDrefExplicitLodCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_1d_0001 %uniform_image_f32_1d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_1d_0001 %img %sampler
+%res1 = OpImageSampleProjDrefExplicitLod %f32 %simg %f32_0_5 %f32_0_5 Lod %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 2 components, but given only 1: "
+      "ImageSampleProjDrefExplicitLod"));
+}
+
+TEST_F(ValidateImage, FetchSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%res1 = OpImageFetch %f32vec4 %img %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, FetchWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%res1 = OpImageFetch %f32 %img %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float vector type: "
+      "ImageFetch"));
+}
+
+TEST_F(ValidateImage, FetchWrongNumComponentsResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%res1 = OpImageFetch %f32vec3 %img %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to have 4 components: ImageFetch"));
+}
+
+TEST_F(ValidateImage, FetchNotImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageFetch %f32vec4 %simg %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image to be of type OpTypeImage: ImageFetch"));
+}
+
+TEST_F(ValidateImage, FetchNotSampled) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageFetch %u32vec4 %img %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled' parameter to be 1: ImageFetch"));
+}
+
+TEST_F(ValidateImage, FetchCube) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%res1 = OpImageFetch %f32vec4 %img %u32vec3_012
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image 'Dim' cannot be Cube: ImageFetch"));
+}
+
+TEST_F(ValidateImage, FetchWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%res1 = OpImageFetch %u32vec4 %img %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type components: "
+      "ImageFetch"));
+}
+
+TEST_F(ValidateImage, FetchVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%res1 = OpImageFetch %f32vec4 %img %u32vec2_01
+%res2 = OpImageFetch %u32vec4 %img %u32vec2_01
+%res3 = OpImageFetch %s32vec4 %img %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, FetchWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%res1 = OpImageFetch %f32vec4 %img %f32vec2_00
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be int scalar or vector: "
+      "ImageFetch"));
+}
+
+TEST_F(ValidateImage, FetchCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%res1 = OpImageFetch %f32vec4 %img %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 2 components, but given only 1: "
+      "ImageFetch"));
+}
+
+TEST_F(ValidateImage, GatherSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageGather %f32vec4 %simg %f32vec4_0000 %u32_1
+%res2 = OpImageGather %f32vec4 %simg %f32vec4_0000 %u32_1 ConstOffsets %const_offsets
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, GatherWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageGather %f32 %simg %f32vec4_0000 %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float vector type: "
+      "ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherWrongNumComponentsResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageGather %f32vec3 %simg %f32vec4_0000 %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to have 4 components: "
+      "ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%res1 = OpImageGather %f32vec4 %img %f32vec4_0000 %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sampled Image to be of type OpTypeSampledImage: "
+      "ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageGather %u32vec4 %simg %f32vec4_0000 %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type components: "
+      "ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageGather %u32vec4 %simg %f32vec2_00 %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, GatherWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageGather %f32vec4 %simg %u32vec4_0123 %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be float scalar or vector: "
+      "ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageGather %f32vec4 %simg %f32_0_5 %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 4 components, but given only 1: "
+      "ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherWrongComponentType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageGather %f32vec4 %simg %f32vec4_0000 %f32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Component to be int scalar: ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherDimCube) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageGather %f32vec4 %simg %f32vec4_0000 %u32_1 ConstOffsets %const_offsets
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand ConstOffsets cannot be used with Cube Image 'Dim': "
+      "ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherConstOffsetsNotArray) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageGather %f32vec4 %simg %f32vec4_0000 %u32_1 ConstOffsets %u32vec4_0123
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand ConstOffsets to be an array of size 4: "
+      "ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherConstOffsetsArrayWrongSize) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageGather %f32vec4 %simg %f32vec4_0000 %u32_1 ConstOffsets %const_offsets3x2
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand ConstOffsets to be an array of size 4: "
+      "ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherConstOffsetsArrayNotVector) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageGather %f32vec4 %simg %f32vec4_0000 %u32_1 ConstOffsets %const_offsets4xu
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand ConstOffsets array componenets to be int vectors "
+      "of size 2: ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherConstOffsetsArrayVectorWrongSize) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageGather %f32vec4 %simg %f32vec4_0000 %u32_1 ConstOffsets %const_offsets4x3
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand ConstOffsets array componenets to be int vectors "
+      "of size 2: ImageGather"));
+}
+
+TEST_F(ValidateImage, GatherConstOffsetsArrayNotConst) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%offsets = OpUndef %u32vec2arr4
+%res1 = OpImageGather %f32vec4 %simg %f32vec4_0000 %u32_1 ConstOffsets %offsets
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand ConstOffsets to be a const object: "
+      "ImageGather"));
+}
+
+TEST_F(ValidateImage, NotGatherWithConstOffsets) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res2 = OpImageSampleImplicitLod %f32vec4 %simg %f32vec2_hh ConstOffsets %const_offsets
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand ConstOffsets can only be used with OpImageGather "
+      "and OpImageDrefGather: ImageSampleImplicitLod"));
+}
+
+TEST_F(ValidateImage, DrefGatherSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageDrefGather %f32vec4 %simg %f32vec4_0000 %f32_0_5
+%res2 = OpImageDrefGather %f32vec4 %simg %f32vec4_0000 %f32_0_5 ConstOffsets %const_offsets
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, DrefGatherVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0001 %uniform_image_void_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_void_2d_0001 %img %sampler
+%res1 = OpImageDrefGather %u32vec4 %simg %f32vec2_00 %f32_0_5
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type components: "
+      "ImageDrefGather"));
+}
+
+TEST_F(ValidateImage, DrefGatherWrongDrefType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0101 %uniform_image_f32_cube_0101
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_cube_0101 %img %sampler
+%res1 = OpImageDrefGather %f32vec4 %simg %f32vec4_0000 %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Dref to be of Image 'Sampled Type': ImageDrefGather"));
+}
+
+TEST_F(ValidateImage, ReadSuccess1) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageRead %u32vec4 %img %u32vec2_01
+)";
+
+  const std::string extra = "\nOpCapability StorageImageReadWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, ReadSuccess2) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_1d_0002_rgba32f %uniform_image_f32_1d_0002_rgba32f
+%res1 = OpImageRead %f32vec4 %img %u32vec2_01
+)";
+
+  const std::string extra = "\nOpCapability Image1D\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, ReadSuccess3) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0102_rgba32f %uniform_image_f32_cube_0102_rgba32f
+%res1 = OpImageRead %f32vec4 %img %u32vec3_012
+)";
+
+  const std::string extra = "\nOpCapability ImageCubeArray\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, ReadSuccess4) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_spd_0002 %uniform_image_f32_spd_0002
+%res1 = OpImageRead %f32vec4 %img %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, ReadNeedCapabilityStorageImageReadWithoutFormat) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageRead %u32vec4 %img %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Capability StorageImageReadWithoutFormat is required to read storage "
+      "image: ImageRead"));
+}
+
+TEST_F(ValidateImage, ReadNeedCapabilityImage1D) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_1d_0002_rgba32f %uniform_image_f32_1d_0002_rgba32f
+%res1 = OpImageRead %f32vec4 %img %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Capability Image1D is required to access storage image: ImageRead"));
+}
+
+TEST_F(ValidateImage, ReadNeedCapabilityImageCubeArray) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0102_rgba32f %uniform_image_f32_cube_0102_rgba32f
+%res1 = OpImageRead %f32vec4 %img %u32vec3_012
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Capability ImageCubeArray is required to access storage image: "
+      "ImageRead"));
+}
+
+TEST_F(ValidateImage, ReadWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageRead %f32 %img %u32vec2_01
+)";
+
+  const std::string extra = "\nOpCapability StorageImageReadWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int or float vector type: ImageRead"));
+}
+
+TEST_F(ValidateImage, ReadWrongNumComponentsResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageRead %f32vec3 %img %u32vec2_01
+)";
+
+  const std::string extra = "\nOpCapability StorageImageReadWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to have 4 components: ImageRead"));
+}
+
+TEST_F(ValidateImage, ReadNotImage) {
+  const std::string body = R"(
+%sampler = OpLoad %type_sampler %uniform_sampler
+%res1 = OpImageRead %f32vec4 %sampler %u32vec2_01
+)";
+
+  const std::string extra = "\nOpCapability StorageImageReadWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image to be of type OpTypeImage: ImageRead"));
+}
+
+TEST_F(ValidateImage, ReadImageSampled) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageRead %f32vec4 %img %u32vec2_01
+)";
+
+  const std::string extra = "\nOpCapability StorageImageReadWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled' parameter to be 0 or 2: ImageRead"));
+}
+
+TEST_F(ValidateImage, ReadWrongSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageRead %f32vec4 %img %u32vec2_01
+)";
+
+  const std::string extra = "\nOpCapability StorageImageReadWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Result Type components: "
+      "ImageRead"));
+}
+
+TEST_F(ValidateImage, ReadVoidSampledType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_void_2d_0002 %uniform_image_void_2d_0002
+%res1 = OpImageRead %f32vec4 %img %u32vec2_01
+%res2 = OpImageRead %u32vec4 %img %u32vec2_01
+%res3 = OpImageRead %s32vec4 %img %u32vec2_01
+)";
+
+  const std::string extra = "\nOpCapability StorageImageReadWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, ReadWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageRead %u32vec4 %img %f32vec2_00
+)";
+
+  const std::string extra = "\nOpCapability StorageImageReadWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be int scalar or vector: ImageRead"));
+}
+
+TEST_F(ValidateImage, ReadCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageRead %u32vec4 %img %u32_1
+)";
+
+  const std::string extra = "\nOpCapability StorageImageReadWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 2 components, but given only 1: "
+      "ImageRead"));
+}
+
+TEST_F(ValidateImage, WriteSuccess1) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageWrite %img %u32vec2_01 %u32vec4_0123
+)";
+
+  const std::string extra = "\nOpCapability StorageImageWriteWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, WriteSuccess2) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_1d_0002_rgba32f %uniform_image_f32_1d_0002_rgba32f
+%res1 = OpImageWrite %img %u32_1 %f32vec4_0000
+)";
+
+  const std::string extra = "\nOpCapability Image1D\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, WriteSuccess3) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0102_rgba32f %uniform_image_f32_cube_0102_rgba32f
+%res1 = OpImageWrite %img %u32vec3_012 %f32vec4_0000
+)";
+
+  const std::string extra = "\nOpCapability ImageCubeArray\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, WriteSuccess4) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0010 %uniform_image_f32_2d_0010
+;TODO(atgoo@github.com) Is it legal to write to MS image without sample index?
+%res1 = OpImageWrite %img %u32vec2_01 %f32vec4_0000
+%res2 = OpImageWrite %img %u32vec2_01 %f32vec4_0000 Sample %u32_1
+)";
+
+  const std::string extra = "\nOpCapability StorageImageWriteWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, WriteSubpassData) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_spd_0002 %uniform_image_f32_spd_0002
+%res1 = OpImageWrite %img %u32vec2_01 %f32vec4_0000
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image 'Dim' cannot be SubpassData: ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteNeedCapabilityStorageImageWriteWithoutFormat) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageWrite %img %u32vec2_01 %u32vec4_0123
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Capability StorageImageWriteWithoutFormat is required to write to "
+      "storage image: ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteNeedCapabilityImage1D) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_1d_0002_rgba32f %uniform_image_f32_1d_0002_rgba32f
+%res1 = OpImageWrite %img %u32vec2_01 %f32vec4_0000
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Capability Image1D is required to access storage image: ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteNeedCapabilityImageCubeArray) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_cube_0102_rgba32f %uniform_image_f32_cube_0102_rgba32f
+%res1 = OpImageWrite %img %u32vec3_012 %f32vec4_0000
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Capability ImageCubeArray is required to access storage image: "
+      "ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteNotImage) {
+  const std::string body = R"(
+%sampler = OpLoad %type_sampler %uniform_sampler
+%res1 = OpImageWrite %sampler %u32vec2_01 %f32vec4_0000
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image to be of type OpTypeImage: ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteImageSampled) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageWrite %img %u32vec2_01 %f32vec4_0000
+)";
+
+  const std::string extra = "\nOpCapability StorageImageWriteWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled' parameter to be 0 or 2: ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageWrite %img %f32vec2_00 %u32vec4_0123
+)";
+
+  const std::string extra = "\nOpCapability StorageImageWriteWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be int scalar or vector: ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageWrite %img %u32_1 %u32vec4_0123
+)";
+
+  const std::string extra = "\nOpCapability StorageImageWriteWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 2 components, but given only 1: "
+      "ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteTexelNotVector) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageWrite %img %u32vec2_01 %u32_0
+)";
+
+  const std::string extra = "\nOpCapability StorageImageWriteWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Texel to be int or float vector or scalar: ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteTexelNotVector4) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageWrite %img %u32vec2_01 %u32vec3_012
+)";
+
+  const std::string extra = "\nOpCapability StorageImageWriteWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Texel to have 4 components: ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteTexelWrongComponentType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_u32_2d_0000 %uniform_image_u32_2d_0000
+%res1 = OpImageWrite %img %u32vec2_01 %f32vec4_0000
+)";
+
+  const std::string extra = "\nOpCapability StorageImageWriteWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image 'Sampled Type' to be the same as Texel components: "
+      "ImageWrite"));
+}
+
+TEST_F(ValidateImage, WriteSampleNotInteger) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0010 %uniform_image_f32_2d_0010
+%res1 = OpImageWrite %img %u32vec2_01 %f32vec4_0000 Sample %f32_1
+)";
+
+  const std::string extra = "\nOpCapability StorageImageWriteWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image Operand Sample to be int scalar: "
+      "ImageWrite"));
+}
+
+TEST_F(ValidateImage, SampleNotMultisampled) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0002 %uniform_image_f32_2d_0002
+%res2 = OpImageWrite %img %u32vec2_01 %f32vec4_0000 Sample %u32_1
+)";
+
+  const std::string extra = "\nOpCapability StorageImageWriteWithoutFormat\n";
+  CompileSuccessfully(GenerateShaderCode(body, extra).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Sample requires non-zero 'MS' parameter: ImageWrite"));
+}
+
+TEST_F(ValidateImage, SampleWrongOpcode) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0010 %uniform_image_f32_2d_0010
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0010 %img %sampler
+%res1 = OpImageSampleExplicitLod %f32vec4 %simg %f32vec2_00 Sample %u32_1
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image Operand Sample can only be used with OpImageFetch, OpImageRead "
+      "and OpImageWrite: ImageSampleExplicitLod"));
+}
+
+TEST_F(ValidateImage, SampleImageToImageSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%img2 = OpImage %type_image_f32_2d_0001 %simg
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, SampleImageToImageWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%img2 = OpImage %type_sampled_image_f32_2d_0001 %simg
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be OpTypeImage: Image"));
+}
+
+TEST_F(ValidateImage, SampleImageToImageNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%img2 = OpImage %type_image_f32_2d_0001 %img
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sample Image to be of type OpTypeSampleImage: Image"));
+}
+
+TEST_F(ValidateImage, SampleImageToImageNotTheSameImageType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%img2 = OpImage %type_image_f32_2d_0002 %simg
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Sample Image image type to be equal to Result Type: Image"));
+}
+
+TEST_F(ValidateImage, QueryFormatSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQueryFormat %u32 %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, QueryFormatWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQueryFormat %bool %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int scalar type: ImageQueryFormat"));
+}
+
+TEST_F(ValidateImage, QueryFormatNotImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQueryFormat %u32 %simg
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected operand to be of type OpTypeImage: ImageQueryFormat"));
+}
+
+TEST_F(ValidateImage, QueryOrderSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQueryOrder %u32 %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, QueryOrderWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQueryOrder %bool %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int scalar type: ImageQueryOrder"));
+}
+
+TEST_F(ValidateImage, QueryOrderNotImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQueryOrder %u32 %simg
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected operand to be of type OpTypeImage: ImageQueryOrder"));
+}
+
+TEST_F(ValidateImage, QuerySizeLodSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQuerySizeLod %u32vec2 %img %u32_1
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, QuerySizeLodWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQuerySizeLod %f32vec2 %img %u32_1
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int scalar or vector type: "
+      "ImageQuerySizeLod"));
+}
+
+TEST_F(ValidateImage, QuerySizeLodResultTypeWrongSize) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQuerySizeLod %u32 %img %u32_1
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Result Type has 1 components, but 2 expected: ImageQuerySizeLod"));
+}
+
+TEST_F(ValidateImage, QuerySizeLodNotImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQuerySizeLod %u32vec2 %simg %u32_1
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image to be of type OpTypeImage: ImageQuerySizeLod"));
+}
+
+TEST_F(ValidateImage, QuerySizeLodWrongImageDim) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%res1 = OpImageQuerySizeLod %u32vec2 %img %u32_1
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image 'Dim' must be 1D, 2D, 3D or Cube: ImageQuerySizeLod"));
+}
+
+TEST_F(ValidateImage, QuerySizeLodMultisampled) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0010 %uniform_image_f32_2d_0010
+%res1 = OpImageQuerySizeLod %u32vec2 %img %u32_1
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image 'MS' must be 0: ImageQuerySizeLod"));
+}
+
+TEST_F(ValidateImage, QuerySizeLodWrongLodType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQuerySizeLod %u32vec2 %img %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Level of Detail to be int or float scalar: ImageQuerySizeLod"));
+}
+
+TEST_F(ValidateImage, QuerySizeSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQuerySize %u32vec2 %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, QuerySizeWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQuerySize %f32vec2 %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int scalar or vector type: "
+      "ImageQuerySize"));
+}
+
+TEST_F(ValidateImage, QuerySizeNotImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQuerySize %u32vec2 %simg
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image to be of type OpTypeImage: ImageQuerySize"));
+}
+
+// TODO(atgoo@github.com) Add more tests for OpQuerySize.
+
+TEST_F(ValidateImage, QueryLodSuccessKernel) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQueryLod %f32vec2 %simg %f32vec2_hh
+%res2 = OpImageQueryLod %f32vec2 %simg %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, QueryLodSuccessShader) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQueryLod %f32vec2 %simg %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, QueryLodWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQueryLod %u32vec2 %simg %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be float vector type: ImageQueryLod"));
+}
+
+TEST_F(ValidateImage, QueryLodResultTypeWrongSize) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQueryLod %f32vec3 %simg %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to have 2 components: ImageQueryLod"));
+}
+
+TEST_F(ValidateImage, QueryLodNotSampledImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQueryLod %f32vec2 %img %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image operand to be of type OpTypeSampledImage: "
+      "ImageQueryLod"));
+}
+
+TEST_F(ValidateImage, QueryLodWrongDim) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_rect_0001 %img %sampler
+%res1 = OpImageQueryLod %f32vec2 %simg %f32vec2_hh
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image 'Dim' must be 1D, 2D, 3D or Cube: ImageQueryLod"));
+}
+
+TEST_F(ValidateImage, QueryLodWrongCoordinateType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQueryLod %f32vec2 %simg %u32vec2_01
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to be float scalar or vector: ImageQueryLod"));
+}
+
+TEST_F(ValidateImage, QueryLodCoordinateSizeTooSmall) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQueryLod %f32vec2 %simg %f32_0
+)";
+
+  CompileSuccessfully(GenerateShaderCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Coordinate to have at least 2 components, but given only 1: "
+      "ImageQueryLod"));
+}
+
+TEST_F(ValidateImage, QueryLevelsSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQueryLevels %u32 %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, QueryLevelsWrongResultType) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQueryLevels %f32 %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Result Type to be int scalar type: ImageQueryLevels"));
+}
+
+TEST_F(ValidateImage, QueryLevelsNotImage) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%sampler = OpLoad %type_sampler %uniform_sampler
+%simg = OpSampledImage %type_sampled_image_f32_2d_0001 %img %sampler
+%res1 = OpImageQueryLevels %u32 %simg
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Expected Image to be of type OpTypeImage: ImageQueryLevels"));
+}
+
+TEST_F(ValidateImage, QueryLevelsWrongDim) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_rect_0001 %uniform_image_f32_rect_0001
+%res1 = OpImageQueryLevels %u32 %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image 'Dim' must be 1D, 2D, 3D or Cube: ImageQueryLevels"));
+}
+
+TEST_F(ValidateImage, QuerySamplesSuccess) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0010 %uniform_image_f32_2d_0010
+%res1 = OpImageQuerySamples %u32 %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
+}
+
+TEST_F(ValidateImage, QuerySamplesNot2D) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_3d_0010 %uniform_image_f32_3d_0010
+%res1 = OpImageQuerySamples %u32 %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image 'Dim' must be 2D: ImageQuerySamples"));
+}
+
+TEST_F(ValidateImage, QuerySamplesNotMultisampled) {
+  const std::string body = R"(
+%img = OpLoad %type_image_f32_2d_0001 %uniform_image_f32_2d_0001
+%res1 = OpImageQuerySamples %u32 %img
+)";
+
+  CompileSuccessfully(GenerateKernelCode(body).c_str());
+  ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions());
+  EXPECT_THAT(getDiagnosticString(), HasSubstr(
+      "Image 'MS' must be 1: ImageQuerySamples"));
+}
+
+}  // anonymous namespace