| #!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 nested do while and undefined int |
| |
| # The test passes because the shader always writes color red. performPartition() writes the color red and then always returns early. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--if-conversion' |
| # '--redundancy-elimination' |
| # '--eliminate-local-multi-store' |
| # '--ccp' |
| # '--eliminate-local-multi-store' |
| # '--eliminate-dead-inserts' |
| # '--ccp' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--eliminate-dead-inserts' |
| # '--ccp' |
| # '--eliminate-dead-branches' |
| # '--private-to-local' |
| # '--eliminate-dead-branches' |
| # spirv-opt commit hash: ad7f2c5c4c7f51360e9e079109a9217aa5ba5cc0 |
| |
| |
| |
| 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; |
| # |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # vec2 injectionSwitch; |
| # }; |
| # |
| # int performPartition() |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); // Write color red |
| # int i; |
| # do |
| # { |
| # if (injectionSwitch.y < 0.0) // Always false |
| # { |
| # } |
| # else |
| # { |
| # for (int GLF_live0i = 0; GLF_live0i < 1; GLF_live0i++) |
| # { |
| # if (injectionSwitch.y < 0.0) // Always false |
| # { |
| # break; |
| # } |
| # return 1; // We always return here. The code below is never executed. |
| # } |
| # if (injectionSwitch.y < 0.0) |
| # { |
| # do |
| # { |
| # return 1; |
| # } while (false); |
| # } |
| # } |
| # } while (false); |
| # return i; |
| # } |
| # |
| # void main() |
| # { |
| # performPartition(); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 80 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %13 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "performPartition(" |
| OpName %13 "_GLF_color" |
| OpName %22 "buf0" |
| OpMemberName %22 0 "injectionSwitch" |
| OpName %24 "" |
| OpName %37 "GLF_live0i" |
| OpName %66 "i" |
| OpDecorate %8 RelaxedPrecision |
| OpDecorate %13 Location 0 |
| OpMemberDecorate %22 0 Offset 0 |
| OpDecorate %22 Block |
| OpDecorate %24 DescriptorSet 0 |
| OpDecorate %24 Binding 0 |
| OpDecorate %37 RelaxedPrecision |
| OpDecorate %66 RelaxedPrecision |
| OpDecorate %70 RelaxedPrecision |
| OpDecorate %73 RelaxedPrecision |
| OpDecorate %72 RelaxedPrecision |
| OpDecorate %73 RelaxedPrecision |
| OpDecorate %73 RelaxedPrecision |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypeFunction %6 |
| %10 = OpTypeFloat 32 |
| %11 = OpTypeVector %10 4 |
| %12 = OpTypePointer Output %11 |
| %13 = OpVariable %12 Output |
| %14 = OpConstant %10 1 |
| %15 = OpConstant %10 0 |
| %16 = OpConstantComposite %11 %14 %15 %15 %14 |
| %21 = OpTypeVector %10 2 |
| %22 = OpTypeStruct %21 |
| %23 = OpTypePointer Uniform %22 |
| %24 = OpVariable %23 Uniform |
| %25 = OpConstant %6 0 |
| %26 = OpTypeInt 32 0 |
| %27 = OpConstant %26 1 |
| %28 = OpTypePointer Uniform %10 |
| %31 = OpTypeBool |
| %36 = OpTypePointer Function %6 |
| %44 = OpConstant %6 1 |
| %65 = OpConstantFalse %31 |
| %74 = OpUndef %6 |
| %78 = OpConstantTrue %31 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %70 = OpFunctionCall %6 %8 |
| OpReturn |
| OpFunctionEnd |
| %8 = OpFunction %6 None %7 |
| %9 = OpLabel |
| %37 = OpVariable %36 Function |
| %66 = OpVariable %36 Function |
| OpStore %13 %16 |
| OpBranch %17 |
| %17 = OpLabel |
| %73 = OpPhi %6 %74 %9 %72 %34 |
| OpLoopMerge %19 %34 None |
| OpBranch %18 |
| %18 = OpLabel |
| %29 = OpAccessChain %28 %24 %25 %27 |
| %30 = OpLoad %10 %29 |
| %32 = OpFOrdLessThan %31 %30 %15 |
| OpSelectionMerge %79 None |
| OpBranchConditional %32 %33 %35 |
| %35 = OpLabel |
| OpStore %37 %25 |
| OpBranch %38 |
| %38 = OpLabel |
| %45 = OpSLessThan %31 %25 %44 |
| OpLoopMerge %49 %41 None |
| OpBranch %39 |
| %39 = OpLabel |
| OpSelectionMerge %50 None |
| OpBranchConditional %32 %49 %50 |
| %49 = OpLabel |
| OpSelectionMerge %59 None |
| OpBranchConditional %32 %58 %59 |
| %50 = OpLabel |
| OpReturnValue %44 |
| %41 = OpLabel |
| OpBranch %38 |
| %58 = OpLabel |
| OpBranch %60 |
| %60 = OpLabel |
| OpLoopMerge %62 %63 None |
| OpBranch %61 |
| %61 = OpLabel |
| OpReturnValue %44 |
| %63 = OpLabel |
| OpBranch %60 |
| %62 = OpLabel |
| OpUnreachable |
| %59 = OpLabel |
| OpBranch %34 |
| %33 = OpLabel |
| OpBranch %34 |
| %79 = OpLabel |
| OpBranch %34 |
| %34 = OpLabel |
| %72 = OpPhi %6 %73 %33 %73 %59 %25 %79 |
| OpBranchConditional %65 %17 %19 |
| %19 = OpLabel |
| OpReturnValue %72 |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # injectionSwitch |
| BUFFER variant_injectionSwitch DATA_TYPE vec2<float> DATA |
| 0.0 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_injectionSwitch 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 |