| #!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 load size reduction path. |
| |
| # The test passes because shader always writes red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '-Os' |
| # spirv-opt commit hash: 9215c1b7df0029f27807e8c8d7ec80532ce90a87 |
| |
| |
| |
| 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 |
| # { |
| # int zero; |
| # }; |
| # |
| # struct S |
| # { |
| # int x[1]; |
| # }; |
| # |
| # // Function returns 1 or 2. |
| # int func(S s, int a) |
| # { |
| # _GLF_color = vec4(0); |
| # |
| # if(s.x[zero] == a) |
| # return 1; |
| # |
| # return 2; |
| # } |
| # |
| # void main() |
| # { |
| # S s; // Uninitialized. Contents don't matter. |
| # int res = func(s, s.x[0]); |
| # // Always true. |
| # if (res == 1 || res == 2) |
| # _GLF_color = vec4(1, 0, 0, 1); |
| # else |
| # _GLF_color = vec4(0); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 97 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %21 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %21 "_GLF_color" |
| OpName %25 "buf0" |
| OpMemberName %25 0 "zero" |
| OpName %27 "" |
| OpDecorate %21 Location 0 |
| OpMemberDecorate %25 0 RelaxedPrecision |
| OpMemberDecorate %25 0 Offset 0 |
| OpDecorate %25 Block |
| OpDecorate %27 DescriptorSet 0 |
| OpDecorate %27 Binding 0 |
| OpDecorate %49 RelaxedPrecision |
| OpDecorate %79 RelaxedPrecision |
| OpDecorate %81 RelaxedPrecision |
| OpDecorate %88 RelaxedPrecision |
| OpDecorate %96 RelaxedPrecision |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypeInt 32 0 |
| %8 = OpConstant %7 1 |
| %9 = OpTypeArray %6 %8 |
| %12 = OpTypePointer Function %6 |
| %18 = OpTypeFloat 32 |
| %19 = OpTypeVector %18 4 |
| %20 = OpTypePointer Output %19 |
| %21 = OpVariable %20 Output |
| %22 = OpConstant %18 0 |
| %23 = OpConstantComposite %19 %22 %22 %22 %22 |
| %24 = OpConstant %6 0 |
| %25 = OpTypeStruct %6 |
| %26 = OpTypePointer Uniform %25 |
| %27 = OpVariable %26 Uniform |
| %28 = OpTypePointer Uniform %6 |
| %34 = OpTypeBool |
| %38 = OpConstant %6 1 |
| %40 = OpConstant %6 2 |
| %58 = OpConstant %18 1 |
| %59 = OpConstantComposite %19 %58 %22 %22 %58 |
| %87 = OpTypePointer Function %9 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %88 = OpVariable %87 Function |
| %89 = OpLoad %9 %88 |
| %49 = OpCompositeExtract %6 %89 0 |
| OpBranch %74 |
| %74 = OpLabel |
| OpLoopMerge %75 %76 None |
| OpBranch %77 |
| %77 = OpLabel |
| OpStore %21 %23 |
| %78 = OpAccessChain %28 %27 %24 |
| %79 = OpLoad %6 %78 |
| %94 = OpAccessChain %12 %88 %79 |
| %81 = OpLoad %6 %94 |
| %83 = OpIEqual %34 %81 %49 |
| OpSelectionMerge %84 None |
| OpBranchConditional %83 %85 %84 |
| %85 = OpLabel |
| OpBranch %75 |
| %84 = OpLabel |
| OpBranch %75 |
| %76 = OpLabel |
| OpBranch %74 |
| %75 = OpLabel |
| %96 = OpPhi %6 %38 %85 %40 %84 |
| %52 = OpIEqual %34 %96 %38 |
| %54 = OpIEqual %34 %96 %40 |
| %55 = OpLogicalOr %34 %52 %54 |
| OpSelectionMerge %57 None |
| OpBranchConditional %55 %56 %60 |
| %60 = OpLabel |
| OpStore %21 %23 |
| OpBranch %57 |
| %56 = OpLabel |
| OpStore %21 %59 |
| OpBranch %57 |
| %57 = OpLabel |
| OpReturn |
| 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 |