| #!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 discard and add in function in loop |
| |
| # The test passes because main always outputs the color red and returns. |
| # red() has an unreachable discard and adds zero to the returned value. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '-O' |
| # 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; |
| # }; |
| # |
| # vec4 red() |
| # { |
| # if(injectionSwitch.x > 0.0) // always false |
| # discard; |
| # |
| # return vec4(1.0, 0.0, 0.0, 1.0) + injectionSwitch.x; // add zero |
| # } |
| # |
| # void main() |
| # { |
| # while(true) |
| # { |
| # while(injectionSwitch.y > 0.0) // always true |
| # { |
| # _GLF_color = red(); |
| # return; |
| # } |
| # } |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 102 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %52 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %12 "buf0" |
| OpMemberName %12 0 "injectionSwitch" |
| OpName %14 "" |
| OpName %52 "_GLF_color" |
| OpMemberDecorate %12 0 Offset 0 |
| OpDecorate %12 Block |
| OpDecorate %14 DescriptorSet 0 |
| OpDecorate %14 Binding 0 |
| OpDecorate %52 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 4 |
| %11 = OpTypeVector %6 2 |
| %12 = OpTypeStruct %11 |
| %13 = OpTypePointer Uniform %12 |
| %14 = OpVariable %13 Uniform |
| %15 = OpTypeInt 32 1 |
| %16 = OpConstant %15 0 |
| %17 = OpTypeInt 32 0 |
| %18 = OpConstant %17 0 |
| %19 = OpTypePointer Uniform %6 |
| %22 = OpConstant %6 0 |
| %23 = OpTypeBool |
| %28 = OpConstant %6 1 |
| %29 = OpConstantComposite %7 %28 %22 %22 %28 |
| %41 = OpConstantTrue %23 |
| %47 = OpConstant %17 1 |
| %51 = OpTypePointer Output %7 |
| %52 = OpVariable %51 Output |
| %63 = OpConstantFalse %23 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| OpBranch %60 |
| %60 = OpLabel |
| OpLoopMerge %59 %62 None |
| OpBranch %36 |
| %36 = OpLabel |
| %100 = OpPhi %23 %63 %60 %98 %66 |
| OpLoopMerge %38 %66 None |
| OpBranch %42 |
| %42 = OpLabel |
| %48 = OpAccessChain %19 %14 %16 %47 |
| %49 = OpLoad %6 %48 |
| %50 = OpFOrdGreaterThan %23 %49 %22 |
| OpLoopMerge %44 %45 None |
| OpBranchConditional %50 %43 %44 |
| %43 = OpLabel |
| OpBranch %81 |
| %81 = OpLabel |
| OpLoopMerge %82 %83 None |
| OpBranch %84 |
| %84 = OpLabel |
| %85 = OpAccessChain %19 %14 %16 %18 |
| %86 = OpLoad %6 %85 |
| %87 = OpFOrdGreaterThan %23 %86 %22 |
| OpSelectionMerge %88 None |
| OpBranchConditional %87 %89 %88 |
| %89 = OpLabel |
| %90 = OpFunctionCall %2 %55 |
| %91 = OpUndef %7 |
| OpBranch %82 |
| %88 = OpLabel |
| %94 = OpCompositeConstruct %7 %86 %86 %86 %86 |
| %95 = OpFAdd %7 %29 %94 |
| OpBranch %82 |
| %83 = OpLabel |
| OpBranch %81 |
| %82 = OpLabel |
| %97 = OpPhi %7 %91 %89 %95 %88 |
| OpStore %52 %97 |
| OpBranch %44 |
| %45 = OpLabel |
| OpBranch %42 |
| %44 = OpLabel |
| %98 = OpPhi %23 %100 %42 %41 %82 |
| OpSelectionMerge %101 None |
| OpBranchConditional %98 %38 %66 |
| %101 = OpLabel |
| OpBranch %66 |
| %66 = OpLabel |
| OpBranch %36 |
| %38 = OpLabel |
| OpSelectionMerge %68 None |
| OpBranchConditional %98 %59 %68 |
| %68 = OpLabel |
| OpBranch %59 |
| %62 = OpLabel |
| OpBranch %60 |
| %59 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %55 = OpFunction %2 None %3 |
| %56 = OpLabel |
| OpKill |
| 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 |