| #!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 OpKill wrapping code path |
| |
| # The test passes because shader always writes red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--vector-dce' |
| # '--combine-access-chains' |
| # '--eliminate-local-multi-store' |
| # '--scalar-replacement=100' |
| # '--simplify-instructions' |
| # '--eliminate-dead-branches' |
| # '--merge-return' |
| # '--combine-access-chains' |
| # '--simplify-instructions' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # 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; |
| # precision highp int; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # int zero; |
| # }; |
| # |
| # void func(int x) |
| # { |
| # // Always false. |
| # if (x < zero) |
| # discard; |
| # |
| # if (x > 8) |
| # _GLF_color = vec4(1, 0, 0, 1); |
| # else |
| # _GLF_color = vec4(0); |
| # } |
| # |
| # void main() |
| # { |
| # _GLF_color = vec4(0); |
| # |
| # for (int i = 0; i < 10 + zero; i++) |
| # func(i); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 58 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %33 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %10 "func(i1;" |
| OpName %9 "x" |
| OpName %13 "buf0" |
| OpMemberName %13 0 "zero" |
| OpName %15 "" |
| OpName %33 "_GLF_color" |
| OpName %39 "i" |
| OpName %51 "param" |
| OpMemberDecorate %13 0 Offset 0 |
| OpDecorate %13 Block |
| OpDecorate %15 DescriptorSet 0 |
| OpDecorate %15 Binding 0 |
| OpDecorate %33 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypePointer Function %6 |
| %8 = OpTypeFunction %2 %7 |
| %13 = OpTypeStruct %6 |
| %14 = OpTypePointer Uniform %13 |
| %15 = OpVariable %14 Uniform |
| %16 = OpConstant %6 0 |
| %17 = OpTypePointer Uniform %6 |
| %20 = OpTypeBool |
| %26 = OpConstant %6 8 |
| %30 = OpTypeFloat 32 |
| %31 = OpTypeVector %30 4 |
| %32 = OpTypePointer Output %31 |
| %33 = OpVariable %32 Output |
| %34 = OpConstant %30 1 |
| %35 = OpConstant %30 0 |
| %36 = OpConstantComposite %31 %34 %35 %35 %34 |
| %38 = OpConstantComposite %31 %35 %35 %35 %35 |
| %46 = OpConstant %6 10 |
| %55 = OpConstant %6 1 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %39 = OpVariable %7 Function |
| %51 = OpVariable %7 Function |
| OpStore %33 %38 |
| OpStore %39 %16 |
| OpBranch %40 |
| %40 = OpLabel |
| %57 = OpPhi %6 %16 %5 %56 %41 |
| %47 = OpAccessChain %17 %15 %16 |
| %48 = OpLoad %6 %47 |
| %49 = OpIAdd %6 %46 %48 |
| %50 = OpSLessThan %20 %57 %49 |
| OpLoopMerge %42 %41 None |
| OpBranchConditional %50 %41 %42 |
| %41 = OpLabel |
| OpStore %51 %57 |
| %53 = OpFunctionCall %2 %10 %51 |
| %56 = OpIAdd %6 %57 %55 |
| OpStore %39 %56 |
| OpBranch %40 |
| %42 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %10 = OpFunction %2 None %8 |
| %9 = OpFunctionParameter %7 |
| %11 = OpLabel |
| %12 = OpLoad %6 %9 |
| %18 = OpAccessChain %17 %15 %16 |
| %19 = OpLoad %6 %18 |
| %21 = OpSLessThan %20 %12 %19 |
| OpSelectionMerge %23 None |
| OpBranchConditional %21 %22 %23 |
| %22 = OpLabel |
| OpKill |
| %23 = OpLabel |
| %25 = OpLoad %6 %9 |
| %27 = OpSGreaterThan %20 %25 %26 |
| OpSelectionMerge %29 None |
| OpBranchConditional %27 %28 %37 |
| %28 = OpLabel |
| OpStore %33 %36 |
| OpBranch %29 |
| %37 = OpLabel |
| OpStore %33 %38 |
| OpBranch %29 |
| %29 = 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 |