#!amber

# Copyright 2021 Google LLC
#
# 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.


# A test for a coverage-gap found by the GraphicsFuzz project.

# Short description: A fragment shader that covers specific LLVM code paths

# The test passes because the shader always writes red.

SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 320 es
# #define _int_256 _GLF_uniform_int_values[0]
# #define _int_1 _GLF_uniform_int_values[1]
# #define _int_0 _GLF_uniform_int_values[2]
#
# precision highp float;
# precision highp int;
#
# // Contents of _GLF_uniform_int_values: [256, 1, 0]
# layout(set = 0, binding = 0) uniform buf0
# {
#     int _GLF_uniform_int_values[3];
# };
#
# // Contents of resolution: 256.0
# layout(set = 0, binding = 1) uniform buf1
# {
#     float resolution;
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     // p becomes (128, 128).
#     ivec2 p = ivec2(resolution) >> ivec2(1);
#     // p becomes (256, 128).
#     p.x += p.y;
#
#     // Always true.
#     if(p.x == _int_256)
#     {
#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
#     }
#     else
#     {
#         _GLF_color = vec4(_int_0);
#     }
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 10
; Bound: 69
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %49
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 320
               OpName %4 "main"
               OpName %9 "p"
               OpName %11 "buf1"
               OpMemberName %11 0 "resolution"
               OpName %13 ""
               OpName %37 "buf0"
               OpMemberName %37 0 "_GLF_uniform_int_values"
               OpName %39 ""
               OpName %49 "_GLF_color"
               OpMemberDecorate %11 0 Offset 0
               OpDecorate %11 Block
               OpDecorate %13 DescriptorSet 0
               OpDecorate %13 Binding 1
               OpDecorate %36 ArrayStride 16
               OpMemberDecorate %37 0 Offset 0
               OpDecorate %37 Block
               OpDecorate %39 DescriptorSet 0
               OpDecorate %39 Binding 0
               OpDecorate %49 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeInt 32 1
          %7 = OpTypeVector %6 2
          %8 = OpTypePointer Function %7
         %10 = OpTypeFloat 32
         %11 = OpTypeStruct %10
         %12 = OpTypePointer Uniform %11
         %13 = OpVariable %12 Uniform
         %14 = OpConstant %6 0
         %15 = OpTypePointer Uniform %10
         %20 = OpConstant %6 1
         %21 = OpConstantComposite %7 %20 %20
         %23 = OpTypeInt 32 0
         %24 = OpConstant %23 1
         %25 = OpTypePointer Function %6
         %28 = OpConstant %23 0
         %35 = OpConstant %23 3
         %36 = OpTypeArray %6 %35
         %37 = OpTypeStruct %36
         %38 = OpTypePointer Uniform %37
         %39 = OpVariable %38 Uniform
         %40 = OpTypePointer Uniform %6
         %43 = OpTypeBool
         %47 = OpTypeVector %10 4
         %48 = OpTypePointer Output %47
         %49 = OpVariable %48 Output
         %53 = OpConstant %6 2
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %9 = OpVariable %8 Function
         %16 = OpAccessChain %15 %13 %14
         %17 = OpLoad %10 %16
         %18 = OpConvertFToS %6 %17
         %19 = OpCompositeConstruct %7 %18 %18
         %22 = OpShiftRightArithmetic %7 %19 %21
               OpStore %9 %22
         %26 = OpAccessChain %25 %9 %24
         %27 = OpLoad %6 %26
         %29 = OpAccessChain %25 %9 %28
         %30 = OpLoad %6 %29
         %31 = OpIAdd %6 %30 %27
         %32 = OpAccessChain %25 %9 %28
               OpStore %32 %31
         %33 = OpAccessChain %25 %9 %28
         %34 = OpLoad %6 %33
         %41 = OpAccessChain %40 %39 %14 %14
         %42 = OpLoad %6 %41
         %44 = OpIEqual %43 %34 %42
               OpSelectionMerge %46 None
               OpBranchConditional %44 %45 %64
         %45 = OpLabel
         %50 = OpAccessChain %40 %39 %14 %20
         %51 = OpLoad %6 %50
         %52 = OpConvertSToF %10 %51
         %54 = OpAccessChain %40 %39 %14 %53
         %55 = OpLoad %6 %54
         %56 = OpConvertSToF %10 %55
         %57 = OpAccessChain %40 %39 %14 %53
         %58 = OpLoad %6 %57
         %59 = OpConvertSToF %10 %58
         %60 = OpAccessChain %40 %39 %14 %20
         %61 = OpLoad %6 %60
         %62 = OpConvertSToF %10 %61
         %63 = OpCompositeConstruct %47 %52 %56 %59 %62
               OpStore %49 %63
               OpBranch %46
         %64 = OpLabel
         %65 = OpAccessChain %40 %39 %14 %53
         %66 = OpLoad %6 %65
         %67 = OpConvertSToF %10 %66
         %68 = OpCompositeConstruct %47 %67 %67 %67 %67
               OpStore %49 %68
               OpBranch %46
         %46 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# resolution
BUFFER variant_resolution DATA_TYPE float STD140 DATA
 256.0
END
# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
 256 1 0
END

BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM

PIPELINE graphics variant_pipeline
  ATTACH variant_vertex_shader
  ATTACH variant_fragment_shader
  FRAMEBUFFER_SIZE 256 256
  BIND BUFFER variant_framebuffer AS color LOCATION 0
  BIND BUFFER variant_resolution AS uniform DESCRIPTOR_SET 0 BINDING 1
  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
END
CLEAR_COLOR variant_pipeline 0 0 0 255

CLEAR variant_pipeline
RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256

EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255