| #!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 uniform comparison in loop |
| |
| # The test passes because main always writes the color red |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--eliminate-dead-inserts' |
| # '--combine-access-chains' |
| # '--eliminate-local-single-block' |
| # '--ccp' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--eliminate-dead-branches' |
| # '--merge-return' |
| # '--eliminate-local-multi-store' |
| # '--simplify-instructions' |
| # '--private-to-local' |
| # '--combine-access-chains' |
| # '--simplify-instructions' |
| # '--if-conversion' |
| # '--eliminate-dead-code-aggressive' |
| # '--eliminate-dead-code-aggressive' |
| # '--ccp' |
| # '--copy-propagate-arrays' |
| # '--ccp' |
| # '--private-to-local' |
| # '--eliminate-dead-code-aggressive' |
| # spirv-opt commit hash: 6b072126595dd8c2448eb1fda616251c5e6d7079 |
| |
| |
| |
| 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; |
| # }; |
| # |
| # float makeFrame() |
| # { |
| # for (int i = 0; i < 1; i++) |
| # { |
| # for (int _injected_loop_counter = 0; 1 < int(injectionSwitch.y); 1) |
| # { |
| # return 1.0; |
| # } |
| # } |
| # return 1.0; |
| # } |
| # |
| # void main() |
| # { |
| # makeFrame(); |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); // Writes the color red |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 85 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %49 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "makeFrame(" |
| OpName %30 "buf0" |
| OpMemberName %30 0 "injectionSwitch" |
| OpName %32 "" |
| OpName %49 "_GLF_color" |
| OpMemberDecorate %30 0 Offset 0 |
| OpDecorate %30 Block |
| OpDecorate %32 DescriptorSet 0 |
| OpDecorate %32 Binding 0 |
| OpDecorate %43 RelaxedPrecision |
| OpDecorate %49 Location 0 |
| OpDecorate %67 RelaxedPrecision |
| OpDecorate %73 RelaxedPrecision |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeFunction %6 |
| %10 = OpTypeInt 32 1 |
| %13 = OpConstant %10 0 |
| %20 = OpConstant %10 1 |
| %21 = OpTypeBool |
| %29 = OpTypeVector %6 2 |
| %30 = OpTypeStruct %29 |
| %31 = OpTypePointer Uniform %30 |
| %32 = OpVariable %31 Uniform |
| %33 = OpTypeInt 32 0 |
| %34 = OpConstant %33 1 |
| %35 = OpTypePointer Uniform %6 |
| %40 = OpConstant %6 1 |
| %47 = OpTypeVector %6 4 |
| %48 = OpTypePointer Output %47 |
| %49 = OpVariable %48 Output |
| %50 = OpConstant %6 0 |
| %51 = OpConstantComposite %47 %40 %50 %50 %40 |
| %59 = OpConstantFalse %21 |
| %62 = OpConstantTrue %21 |
| %79 = OpUndef %6 |
| %82 = OpUndef %21 |
| %83 = OpUndef %10 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %46 = OpFunctionCall %6 %8 |
| OpStore %49 %51 |
| OpReturn |
| OpFunctionEnd |
| %8 = OpFunction %6 None %7 |
| %9 = OpLabel |
| OpBranch %56 |
| %56 = OpLabel |
| OpLoopMerge %52 %58 None |
| OpBranch %57 |
| %57 = OpLabel |
| OpBranch %14 |
| %14 = OpLabel |
| %70 = OpPhi %21 %59 %57 %68 %63 |
| %67 = OpPhi %10 %13 %57 %43 %63 |
| %77 = OpPhi %6 %79 %57 %80 %63 |
| %22 = OpSLessThan %21 %67 %20 |
| OpLoopMerge %16 %63 None |
| OpBranchConditional %22 %15 %16 |
| %15 = OpLabel |
| OpBranch %24 |
| %24 = OpLabel |
| %81 = OpPhi %6 %77 %15 %79 %27 |
| %73 = OpPhi %10 %67 %15 %83 %27 |
| %69 = OpPhi %21 %70 %15 %82 %27 |
| %36 = OpAccessChain %35 %32 %13 %34 |
| %37 = OpLoad %6 %36 |
| %38 = OpConvertFToS %10 %37 |
| %39 = OpSLessThan %21 %20 %38 |
| OpLoopMerge %26 %27 None |
| OpBranchConditional %39 %25 %26 |
| %25 = OpLabel |
| OpBranch %26 |
| %27 = OpLabel |
| OpBranch %24 |
| %26 = OpLabel |
| %80 = OpPhi %6 %81 %24 %40 %25 |
| %68 = OpPhi %21 %69 %24 %62 %25 |
| OpSelectionMerge %84 None |
| OpBranchConditional %68 %16 %84 |
| %84 = OpLabel |
| OpBranch %63 |
| %63 = OpLabel |
| %43 = OpIAdd %10 %73 %20 |
| OpBranch %14 |
| %16 = OpLabel |
| %76 = OpPhi %6 %77 %14 %80 %26 |
| %74 = OpPhi %21 %70 %14 %68 %26 |
| OpSelectionMerge %65 None |
| OpBranchConditional %74 %52 %65 |
| %65 = OpLabel |
| OpBranch %52 |
| %58 = OpLabel |
| OpBranch %56 |
| %52 = OpLabel |
| %75 = OpPhi %6 %76 %16 %40 %65 |
| OpReturnValue %75 |
| 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 |