--- /dev/null
+#!amber
+
+# Copyright 2019 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 bug found by GraphicsFuzz.
+
+# Short description: A fragment shader with unreachable discard statement
+
+# The test passes because the shader always writes the color red. The discard statement is never reached.
+
+# Optimized using spirv-opt with the following arguments:
+# '--scalar-replacement=100'
+# '--private-to-local'
+# '--eliminate-dead-branches'
+# '--merge-return'
+# '--eliminate-dead-branches'
+# '--private-to-local'
+# '--copy-propagate-arrays'
+# '--scalar-replacement=100'
+# '--combine-access-chains'
+# '--vector-dce'
+# '--convert-local-access-chains'
+# '--if-conversion'
+# '--eliminate-dead-branches'
+# '--merge-return'
+# '--ccp'
+# '--eliminate-dead-branches'
+# '--eliminate-dead-branches'
+# '--merge-blocks'
+# '--combine-access-chains'
+# '--eliminate-local-single-block'
+# '--copy-propagate-arrays'
+# '--ccp'
+# '--private-to-local'
+# '--private-to-local'
+# spirv-opt commit hash: 06407250a169c6a03b3765e86619075af1a8c187
+
+
+
+SHADER vertex variant_vertex_shader PASSTHROUGH
+
+# variant_fragment_shader is derived from the following GLSL:
+# #version 310 es
+# precision highp float;
+#
+# layout(location = 0) out vec4 _GLF_color;
+#
+# vec3 mand()
+# {
+# for (int k = 0; k < 1000; k++)
+# return vec3(1.0);
+#
+# discard; // This statement is never reached
+# return vec3(1.0);
+# }
+#
+# void main()
+# {
+# _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
+#
+# for (int i = 0; i < 4; i++)
+# mand();
+#
+# }
+SHADER fragment variant_fragment_shader SPIRV-ASM
+; SPIR-V
+; Version: 1.0
+; Generator: Khronos Glslang Reference Front End; 7
+; Bound: 63
+; Schema: 0
+ OpCapability Shader
+ %1 = OpExtInstImport "GLSL.std.450"
+ OpMemoryModel Logical GLSL450
+ OpEntryPoint Fragment %4 "main" %35
+ OpExecutionMode %4 OriginUpperLeft
+ OpSource ESSL 310
+ OpName %4 "main"
+ OpName %9 "mand("
+ OpName %13 "k"
+ OpName %35 "_GLF_color"
+ OpName %38 "i"
+ OpDecorate %13 RelaxedPrecision
+ OpDecorate %20 RelaxedPrecision
+ OpDecorate %35 Location 0
+ OpDecorate %38 RelaxedPrecision
+ OpDecorate %44 RelaxedPrecision
+ OpDecorate %48 RelaxedPrecision
+ OpDecorate %49 RelaxedPrecision
+ %2 = OpTypeVoid
+ %3 = OpTypeFunction %2
+ %6 = OpTypeFloat 32
+ %7 = OpTypeVector %6 3
+ %8 = OpTypeFunction %7
+ %11 = OpTypeInt 32 1
+ %12 = OpTypePointer Function %11
+ %14 = OpConstant %11 0
+ %21 = OpConstant %11 1000
+ %22 = OpTypeBool
+ %24 = OpConstant %6 1
+ %25 = OpConstantComposite %7 %24 %24 %24
+ %28 = OpConstant %11 1
+ %33 = OpTypeVector %6 4
+ %34 = OpTypePointer Output %33
+ %35 = OpVariable %34 Output
+ %36 = OpConstant %6 0
+ %37 = OpConstantComposite %33 %24 %36 %36 %24
+ %45 = OpConstant %11 4
+ %51 = OpTypePointer Function %7
+ %57 = OpConstantFalse %22
+ %58 = OpTypePointer Function %22
+ %60 = OpConstantTrue %22
+ %4 = OpFunction %2 None %3
+ %5 = OpLabel
+ %38 = OpVariable %12 Function
+ OpStore %35 %37
+ OpStore %38 %14
+ OpBranch %39
+ %39 = OpLabel
+ %44 = OpLoad %11 %38
+ %46 = OpSLessThan %22 %44 %45
+ OpLoopMerge %41 %40 None
+ OpBranchConditional %46 %40 %41
+ %40 = OpLabel
+ %47 = OpFunctionCall %7 %9
+ %48 = OpLoad %11 %38
+ %49 = OpIAdd %11 %48 %28
+ OpStore %38 %49
+ OpBranch %39
+ %41 = OpLabel
+ OpReturn
+ OpFunctionEnd
+ %9 = OpFunction %7 None %8
+ %10 = OpLabel
+ %59 = OpVariable %58 Function %57
+ %52 = OpVariable %51 Function
+ %13 = OpVariable %12 Function
+ OpBranch %54
+ %54 = OpLabel
+ OpStore %13 %14
+ OpLoopMerge %50 %56 None
+ OpBranch %15
+ %15 = OpLabel
+ %20 = OpLoad %11 %13
+ %23 = OpSLessThan %22 %20 %21
+ OpLoopMerge %17 %18 None
+ OpBranchConditional %23 %16 %17
+ %16 = OpLabel
+ OpStore %59 %60
+ OpStore %52 %25
+ OpBranch %17
+ %18 = OpLabel
+ OpBranch %15
+ %17 = OpLabel
+ %62 = OpLoad %22 %59
+ OpSelectionMerge %61 None
+ OpBranchConditional %62 %50 %61
+ %61 = OpLabel
+ OpKill
+ %56 = OpLabel
+ OpBranch %54
+ %50 = OpLabel
+ %53 = OpLoad %7 %52
+ OpReturnValue %53
+ OpFunctionEnd
+END
+
+# uniforms for variant
+
+
+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
+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
projects / platform / upstream / VK-GL-CTS.git / commitdiff