| #!amber |
| |
| # Copyright 2020 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 coverage-gap found by GraphicsFuzz. |
| |
| # Short description: A fragment shader that covers a specific inlining optimization path. |
| |
| # The test passes because shader always writes red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--eliminate-dead-branches' |
| # '--merge-return' |
| # '--eliminate-dead-inserts' |
| # '--eliminate-local-single-store' |
| # '--scalar-replacement=100' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--scalar-replacement=100' |
| # '--eliminate-dead-branches' |
| # '--ccp' |
| # '--ccp' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--vector-dce' |
| # '--eliminate-dead-branches' |
| # '--scalar-replacement=100' |
| # '--eliminate-local-single-store' |
| # '--combine-access-chains' |
| # '--redundancy-elimination' |
| # '--ccp' |
| # '--eliminate-dead-code-aggressive' |
| # '--private-to-local' |
| # '--eliminate-local-single-block' |
| # '--eliminate-local-multi-store' |
| # '--eliminate-local-single-block' |
| # '--ccp' |
| # spirv-opt commit hash: 96354f5047bf35765af49657304357e00264e5f9 |
| |
| |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 310 es |
| # precision highp float; |
| # precision highp int; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # int zero; |
| # }; |
| # |
| # vec4 returnRed() |
| # { |
| # do |
| # { |
| # // Always false. |
| # if(zero == 1) |
| # { |
| # return vec4(1, 0, 0, 1); |
| # } |
| # } |
| # while(false); |
| # return vec4(1, 0, 0, 1); |
| # } |
| # |
| # void main() |
| # { |
| # do |
| # { |
| # _GLF_color = returnRed(); |
| # } |
| # while(false); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 63 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %40 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "returnRed(" |
| OpName %16 "buf0" |
| OpMemberName %16 0 "zero" |
| OpName %18 "" |
| OpName %40 "_GLF_color" |
| OpMemberDecorate %16 0 Offset 0 |
| OpDecorate %16 Block |
| OpDecorate %18 DescriptorSet 0 |
| OpDecorate %18 Binding 0 |
| OpDecorate %40 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 4 |
| %8 = OpTypeFunction %7 |
| %15 = OpTypeInt 32 1 |
| %16 = OpTypeStruct %15 |
| %17 = OpTypePointer Uniform %16 |
| %18 = OpVariable %17 Uniform |
| %19 = OpConstant %15 0 |
| %20 = OpTypePointer Uniform %15 |
| %23 = OpConstant %15 1 |
| %24 = OpTypeBool |
| %28 = OpConstant %6 1 |
| %29 = OpConstant %6 0 |
| %30 = OpConstantComposite %7 %28 %29 %29 %28 |
| %32 = OpConstantFalse %24 |
| %39 = OpTypePointer Output %7 |
| %40 = OpVariable %39 Output |
| %43 = OpTypePointer Function %7 |
| %49 = OpTypePointer Function %24 |
| %51 = OpConstantTrue %24 |
| %61 = OpUndef %7 |
| %62 = OpUndef %24 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| OpBranch %35 |
| %35 = OpLabel |
| %41 = OpFunctionCall %7 %9 |
| OpStore %40 %41 |
| OpLoopMerge %37 %35 None |
| OpBranchConditional %32 %35 %37 |
| %37 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %9 = OpFunction %7 None %8 |
| %10 = OpLabel |
| %50 = OpVariable %49 Function %32 |
| %44 = OpVariable %43 Function |
| OpBranch %46 |
| %46 = OpLabel |
| %56 = OpPhi %24 %32 %10 %62 %48 |
| OpLoopMerge %42 %48 None |
| OpBranch %11 |
| %11 = OpLabel |
| OpLoopMerge %13 %14 None |
| OpBranch %12 |
| %12 = OpLabel |
| %21 = OpAccessChain %20 %18 %19 |
| %22 = OpLoad %15 %21 |
| %25 = OpIEqual %24 %22 %23 |
| OpSelectionMerge %27 None |
| OpBranchConditional %25 %26 %27 |
| %26 = OpLabel |
| OpStore %50 %51 |
| OpStore %44 %30 |
| OpBranch %13 |
| %27 = OpLabel |
| OpBranch %14 |
| %14 = OpLabel |
| OpBranchConditional %32 %11 %13 |
| %13 = OpLabel |
| %58 = OpPhi %7 %30 %26 %61 %14 |
| %54 = OpPhi %24 %51 %26 %32 %14 |
| OpSelectionMerge %52 None |
| OpBranchConditional %54 %42 %52 |
| %52 = OpLabel |
| OpStore %50 %51 |
| OpStore %44 %30 |
| OpBranch %42 |
| %48 = OpLabel |
| OpBranch %46 |
| %42 = OpLabel |
| %57 = OpPhi %7 %58 %13 %30 %52 |
| OpReturnValue %57 |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # zero |
| BUFFER variant_zero DATA_TYPE int32 DATA |
| 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_zero 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 |