| #!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 uninitialized element cast in loop |
| |
| # The test passes because main always writes the color red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--inline-entry-points-exhaustive' |
| # '--eliminate-local-single-block' |
| # '--ccp' |
| # '--eliminate-local-multi-store' |
| # '--inline-entry-points-exhaustive' |
| # '--combine-access-chains' |
| # '--combine-access-chains' |
| # '--reduce-load-size' |
| # '--copy-propagate-arrays' |
| # '--reduce-load-size' |
| # '--eliminate-local-multi-store' |
| # '--scalar-replacement=100' |
| # '--convert-local-access-chains' |
| # '--scalar-replacement=100' |
| # '--vector-dce' |
| # '--eliminate-dead-inserts' |
| # '--scalar-replacement=100' |
| # '--eliminate-dead-inserts' |
| # '--simplify-instructions' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--ccp' |
| # '--copy-propagate-arrays' |
| # '--combine-access-chains' |
| # '--eliminate-local-multi-store' |
| # 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; |
| # layout(set = 0, binding = 0) uniform buf0 { vec2 injectionSwitch; }; |
| # |
| # void main() |
| # { |
| # while(true) |
| # { |
| # while(false) |
| # break; |
| # |
| # float uninit[1]; |
| # float(uninit[0]); |
| # |
| # if (injectionSwitch.x < injectionSwitch.y) // always true |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # 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: 56 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %46 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %32 "buf0" |
| OpMemberName %32 0 "injectionSwitch" |
| OpName %34 "" |
| OpName %46 "_GLF_color" |
| OpMemberDecorate %32 0 Offset 0 |
| OpDecorate %32 Block |
| OpDecorate %34 DescriptorSet 0 |
| OpDecorate %34 Binding 0 |
| OpDecorate %46 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %11 = OpTypeBool |
| %12 = OpConstantTrue %11 |
| %18 = OpConstantFalse %11 |
| %20 = OpTypeFloat 32 |
| %21 = OpTypeInt 32 0 |
| %22 = OpConstant %21 1 |
| %23 = OpTypeArray %20 %22 |
| %24 = OpTypePointer Function %23 |
| %26 = OpTypeInt 32 1 |
| %27 = OpConstant %26 0 |
| %28 = OpTypePointer Function %20 |
| %31 = OpTypeVector %20 2 |
| %32 = OpTypeStruct %31 |
| %33 = OpTypePointer Uniform %32 |
| %34 = OpVariable %33 Uniform |
| %35 = OpConstant %21 0 |
| %36 = OpTypePointer Uniform %20 |
| %44 = OpTypeVector %20 4 |
| %45 = OpTypePointer Output %44 |
| %46 = OpVariable %45 Output |
| %47 = OpConstant %20 1 |
| %48 = OpConstant %20 0 |
| %49 = OpConstantComposite %44 %47 %48 %48 %47 |
| %54 = OpUndef %20 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %51 = OpVariable %28 Function |
| OpBranch %6 |
| %6 = OpLabel |
| %53 = OpPhi %20 %54 %5 %52 %43 |
| OpLoopMerge %8 %43 None |
| OpBranch %13 |
| %13 = OpLabel |
| %52 = OpPhi %20 %53 %6 %54 %16 |
| %37 = OpAccessChain %36 %34 %27 %35 |
| %38 = OpLoad %20 %37 |
| %39 = OpAccessChain %36 %34 %27 %22 |
| %40 = OpLoad %20 %39 |
| %41 = OpFOrdLessThan %11 %38 %40 |
| OpSelectionMerge %55 None |
| OpBranchConditional %41 %42 %43 |
| %16 = OpLabel |
| OpBranch %13 |
| %42 = OpLabel |
| OpStore %46 %49 |
| OpReturn |
| %55 = OpLabel |
| OpBranch %43 |
| %43 = OpLabel |
| OpBranch %6 |
| %8 = OpLabel |
| OpUnreachable |
| 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 |