| #!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: |
| # '--eliminate-local-multi-store' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--simplify-instructions' |
| # '--eliminate-dead-branches' |
| # '--reduce-load-size' |
| # '--convert-local-access-chains' |
| # '--eliminate-dead-branches' |
| # '--if-conversion' |
| # '--simplify-instructions' |
| # '--ccp' |
| # '--vector-dce' |
| # '--vector-dce' |
| # '--eliminate-dead-code-aggressive' |
| # '--redundancy-elimination' |
| # '--eliminate-local-multi-store' |
| # '--eliminate-dead-branches' |
| # '--eliminate-local-single-store' |
| # '--private-to-local' |
| # '--eliminate-dead-branches' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # 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_5 _GLF_uniform_int_values[0] |
| # #define _int_4 _GLF_uniform_int_values[1] |
| # #define _int_1 _GLF_uniform_int_values[2] |
| # #define _int_0 _GLF_uniform_int_values[3] |
| # |
| # precision highp float; |
| # precision highp int; |
| # |
| # // Contents of _GLF_uniform_int_values: [5, 4, 1, 0] |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # int _GLF_uniform_int_values[4]; |
| # }; |
| # |
| # struct S |
| # { |
| # int i; |
| # }; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # void main() |
| # { |
| # int a = _int_1; |
| # |
| # for(S s = S(0); s.i < _int_5; s.i++) |
| # { |
| # if(a > 3) |
| # { |
| # break; |
| # } |
| # a++; |
| # } |
| # |
| # if(a == _int_4) |
| # { |
| # _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: 82 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %56 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 320 |
| OpName %4 "main" |
| OpName %12 "buf0" |
| OpMemberName %12 0 "_GLF_uniform_int_values" |
| OpName %14 "" |
| OpName %20 "S" |
| OpMemberName %20 0 "i" |
| OpName %22 "s" |
| OpName %56 "_GLF_color" |
| OpDecorate %11 ArrayStride 16 |
| OpMemberDecorate %12 0 Offset 0 |
| OpDecorate %12 Block |
| OpDecorate %14 DescriptorSet 0 |
| OpDecorate %14 Binding 0 |
| OpDecorate %56 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %9 = OpTypeInt 32 0 |
| %10 = OpConstant %9 4 |
| %11 = OpTypeArray %6 %10 |
| %12 = OpTypeStruct %11 |
| %13 = OpTypePointer Uniform %12 |
| %14 = OpVariable %13 Uniform |
| %15 = OpConstant %6 0 |
| %16 = OpConstant %6 2 |
| %17 = OpTypePointer Uniform %6 |
| %20 = OpTypeStruct %6 |
| %21 = OpTypePointer Function %20 |
| %23 = OpConstantComposite %20 %15 |
| %33 = OpTypeBool |
| %36 = OpConstant %6 3 |
| %42 = OpConstant %6 1 |
| %53 = OpTypeFloat 32 |
| %54 = OpTypeVector %53 4 |
| %55 = OpTypePointer Output %54 |
| %56 = OpVariable %55 Output |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %22 = OpVariable %21 Function |
| %18 = OpAccessChain %17 %14 %15 %16 |
| %19 = OpLoad %6 %18 |
| OpStore %22 %23 |
| OpBranch %24 |
| %24 = OpLabel |
| %81 = OpPhi %20 %23 %5 %80 %27 |
| %75 = OpPhi %6 %19 %5 %43 %27 |
| %30 = OpCompositeExtract %6 %81 0 |
| %31 = OpAccessChain %17 %14 %15 %15 |
| %32 = OpLoad %6 %31 |
| %34 = OpSLessThan %33 %30 %32 |
| OpLoopMerge %26 %27 None |
| OpBranchConditional %34 %25 %26 |
| %25 = OpLabel |
| %37 = OpSGreaterThan %33 %75 %36 |
| OpSelectionMerge %39 None |
| OpBranchConditional %37 %38 %39 |
| %38 = OpLabel |
| OpBranch %26 |
| %39 = OpLabel |
| %43 = OpIAdd %6 %75 %42 |
| OpBranch %27 |
| %27 = OpLabel |
| %45 = OpCompositeExtract %6 %81 0 |
| %46 = OpIAdd %6 %45 %42 |
| %80 = OpCompositeInsert %20 %46 %81 0 |
| OpStore %22 %80 |
| OpBranch %24 |
| %26 = OpLabel |
| %48 = OpAccessChain %17 %14 %15 %42 |
| %49 = OpLoad %6 %48 |
| %50 = OpIEqual %33 %75 %49 |
| OpSelectionMerge %52 None |
| OpBranchConditional %50 %51 %70 |
| %51 = OpLabel |
| %59 = OpConvertSToF %53 %19 |
| %60 = OpAccessChain %17 %14 %15 %36 |
| %61 = OpLoad %6 %60 |
| %62 = OpConvertSToF %53 %61 |
| %69 = OpCompositeConstruct %54 %59 %62 %62 %59 |
| OpStore %56 %69 |
| OpBranch %52 |
| %70 = OpLabel |
| %71 = OpAccessChain %17 %14 %15 %36 |
| %72 = OpLoad %6 %71 |
| %73 = OpConvertSToF %53 %72 |
| %74 = OpCompositeConstruct %54 %73 %73 %73 %73 |
| OpStore %56 %74 |
| OpBranch %52 |
| %52 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # _GLF_uniform_int_values |
| BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA |
| 5 4 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 |