| #!amber |
| |
| # Copyright 2021 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 the GraphicsFuzz project. |
| |
| # Short description: A fragment shader that covers specific LLVM code paths |
| |
| # The test passes because the shader always writes red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--if-conversion' |
| # '--convert-local-access-chains' |
| # '--eliminate-dead-branches' |
| # '--merge-return' |
| # '--eliminate-local-single-block' |
| # '--simplify-instructions' |
| # '--simplify-instructions' |
| # '--combine-access-chains' |
| # '--convert-local-access-chains' |
| # '--eliminate-dead-branches' |
| # '--ccp' |
| # '--eliminate-local-single-block' |
| # '--combine-access-chains' |
| # '--private-to-local' |
| # '--eliminate-dead-inserts' |
| # '--redundancy-elimination' |
| # '--scalar-replacement=100' |
| # '--eliminate-dead-branches' |
| # '--eliminate-local-multi-store' |
| # '--if-conversion' |
| # '--eliminate-dead-branches' |
| # '--eliminate-local-single-block' |
| # '--scalar-replacement=100' |
| # '--private-to-local' |
| # '--eliminate-dead-branches' |
| # '--eliminate-local-single-block' |
| # '--if-conversion' |
| # '--redundancy-elimination' |
| # spirv-opt commit hash: a0370efd589be33d5d9a85cfde2f85841b3755af |
| |
| |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 320 es |
| # #define _int_1 _GLF_uniform_int_values[0] |
| # #define _int_0 _GLF_uniform_int_values[1] |
| # |
| # precision highp float; |
| # precision highp int; |
| # |
| # // Contents of _GLF_uniform_int_values: [1, 0] |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # int _GLF_uniform_int_values[2]; |
| # }; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # // This function always returns one. |
| # int func() |
| # { |
| # // Always true. |
| # if(unpackUnorm2x16(1u).y == 0.0) |
| # { |
| # return _int_1; |
| # } |
| # else |
| # { |
| # return _int_0; |
| # } |
| # } |
| # |
| # void main() |
| # { |
| # // Always true. |
| # if(func() == _int_1) |
| # { |
| # _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1); |
| # } |
| # else |
| # { |
| # _GLF_color = vec4(_int_0); |
| # } |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 10 |
| ; Bound: 75 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %45 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 320 |
| OpName %4 "main" |
| OpName %8 "func(" |
| OpName %23 "buf0" |
| OpMemberName %23 0 "_GLF_uniform_int_values" |
| OpName %25 "" |
| OpName %45 "_GLF_color" |
| OpDecorate %22 ArrayStride 16 |
| OpMemberDecorate %23 0 Offset 0 |
| OpDecorate %23 Block |
| OpDecorate %25 DescriptorSet 0 |
| OpDecorate %25 Binding 0 |
| OpDecorate %45 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypeFunction %6 |
| %10 = OpTypeInt 32 0 |
| %11 = OpConstant %10 1 |
| %12 = OpTypeFloat 32 |
| %13 = OpTypeVector %12 2 |
| %16 = OpConstant %12 0 |
| %17 = OpTypeBool |
| %21 = OpConstant %10 2 |
| %22 = OpTypeArray %6 %21 |
| %23 = OpTypeStruct %22 |
| %24 = OpTypePointer Uniform %23 |
| %25 = OpVariable %24 Uniform |
| %26 = OpConstant %6 0 |
| %27 = OpTypePointer Uniform %6 |
| %32 = OpConstant %6 1 |
| %43 = OpTypeVector %12 4 |
| %44 = OpTypePointer Output %43 |
| %45 = OpVariable %44 Output |
| %65 = OpTypePointer Function %6 |
| %69 = OpConstant %10 0 |
| %70 = OpConstantFalse %17 |
| %71 = OpTypePointer Function %17 |
| %73 = OpConstantTrue %17 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %37 = OpFunctionCall %6 %8 |
| %38 = OpAccessChain %27 %25 %26 %26 |
| %39 = OpLoad %6 %38 |
| %40 = OpIEqual %17 %37 %39 |
| OpSelectionMerge %42 None |
| OpBranchConditional %40 %41 %59 |
| %59 = OpLabel |
| %60 = OpAccessChain %27 %25 %26 %32 |
| %61 = OpLoad %6 %60 |
| %62 = OpConvertSToF %12 %61 |
| %63 = OpCompositeConstruct %43 %62 %62 %62 %62 |
| OpStore %45 %63 |
| OpBranch %42 |
| %41 = OpLabel |
| %48 = OpConvertSToF %12 %39 |
| %49 = OpAccessChain %27 %25 %26 %32 |
| %50 = OpLoad %6 %49 |
| %51 = OpConvertSToF %12 %50 |
| %58 = OpCompositeConstruct %43 %48 %51 %51 %48 |
| OpStore %45 %58 |
| OpBranch %42 |
| %42 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %8 = OpFunction %6 None %7 |
| %9 = OpLabel |
| %72 = OpVariable %71 Function %70 |
| %66 = OpVariable %65 Function |
| OpSelectionMerge %64 None |
| OpSwitch %69 %68 |
| %68 = OpLabel |
| %14 = OpExtInst %13 %1 UnpackUnorm2x16 %11 |
| %15 = OpCompositeExtract %12 %14 1 |
| %18 = OpFOrdEqual %17 %15 %16 |
| OpSelectionMerge %20 None |
| OpBranchConditional %18 %19 %31 |
| %31 = OpLabel |
| %33 = OpAccessChain %27 %25 %26 %32 |
| %34 = OpLoad %6 %33 |
| OpStore %72 %73 |
| OpStore %66 %34 |
| OpBranch %64 |
| %19 = OpLabel |
| %28 = OpAccessChain %27 %25 %26 %26 |
| %29 = OpLoad %6 %28 |
| OpStore %72 %73 |
| OpStore %66 %29 |
| OpBranch %64 |
| %20 = OpLabel |
| OpUnreachable |
| %64 = OpLabel |
| %74 = OpPhi %6 %34 %31 %29 %19 |
| OpReturnValue %74 |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # _GLF_uniform_int_values |
| BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA |
| 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__GLF_uniform_int_values 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 |