| #!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 path. |
| |
| # The test passes because shader always writes red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--convert-local-access-chains' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--eliminate-local-single-store' |
| # '--eliminate-dead-branches' |
| # '--merge-return' |
| # '--inline-entry-points-exhaustive' |
| # '--copy-propagate-arrays' |
| # '--if-conversion' |
| # '--reduce-load-size' |
| # '--convert-local-access-chains' |
| # '--if-conversion' |
| # '--redundancy-elimination' |
| # '--if-conversion' |
| # '--simplify-instructions' |
| # '--scalar-replacement=100' |
| # '--simplify-instructions' |
| # '--if-conversion' |
| # '--eliminate-dead-inserts' |
| # '--eliminate-dead-branches' |
| # '--eliminate-dead-code-aggressive' |
| # 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 five; |
| # }; |
| # |
| # float func(float x) |
| # { |
| # if (x > 5.0) |
| # { |
| # if (gl_FragCoord.x < 0.5) |
| # discard; |
| # else if (gl_FragCoord.y < 0.5) |
| # discard; |
| # } |
| # |
| # return x + 1.0; |
| # } |
| # |
| # void main() |
| # { |
| # float f = 0.0; |
| # |
| # for(int i = 0; i < five; i++) |
| # f = func(float(i)); |
| # |
| # if (f == 5.0) |
| # _GLF_color = vec4(1, 0, 0, 1); |
| # else |
| # _GLF_color = vec4(0); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 79 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %20 %75 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %10 "func(f1;" |
| OpName %9 "x" |
| OpName %20 "gl_FragCoord" |
| OpName %44 "f" |
| OpName %48 "i" |
| OpName %56 "buf0" |
| OpMemberName %56 0 "five" |
| OpName %58 "" |
| OpName %65 "param" |
| OpName %75 "_GLF_color" |
| OpDecorate %20 BuiltIn FragCoord |
| OpMemberDecorate %56 0 Offset 0 |
| OpDecorate %56 Block |
| OpDecorate %58 DescriptorSet 0 |
| OpDecorate %58 Binding 0 |
| OpDecorate %75 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypePointer Function %6 |
| %8 = OpTypeFunction %6 %7 |
| %13 = OpConstant %6 5 |
| %14 = OpTypeBool |
| %18 = OpTypeVector %6 4 |
| %19 = OpTypePointer Input %18 |
| %20 = OpVariable %19 Input |
| %21 = OpTypeInt 32 0 |
| %22 = OpConstant %21 0 |
| %23 = OpTypePointer Input %6 |
| %26 = OpConstant %6 0.5 |
| %32 = OpConstant %21 1 |
| %40 = OpConstant %6 1 |
| %45 = OpConstant %6 0 |
| %46 = OpTypeInt 32 1 |
| %47 = OpTypePointer Function %46 |
| %49 = OpConstant %46 0 |
| %56 = OpTypeStruct %46 |
| %57 = OpTypePointer Uniform %56 |
| %58 = OpVariable %57 Uniform |
| %59 = OpTypePointer Uniform %46 |
| %68 = OpConstant %46 1 |
| %74 = OpTypePointer Output %18 |
| %75 = OpVariable %74 Output |
| %76 = OpConstantComposite %18 %40 %45 %45 %40 |
| %78 = OpConstantComposite %18 %45 %45 %45 %45 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %44 = OpVariable %7 Function |
| %48 = OpVariable %47 Function |
| %65 = OpVariable %7 Function |
| OpStore %44 %45 |
| OpStore %48 %49 |
| OpBranch %50 |
| %50 = OpLabel |
| %55 = OpLoad %46 %48 |
| %60 = OpAccessChain %59 %58 %49 |
| %61 = OpLoad %46 %60 |
| %62 = OpSLessThan %14 %55 %61 |
| OpLoopMerge %52 %51 None |
| OpBranchConditional %62 %51 %52 |
| %51 = OpLabel |
| %63 = OpLoad %46 %48 |
| %64 = OpConvertSToF %6 %63 |
| OpStore %65 %64 |
| %66 = OpFunctionCall %6 %10 %65 |
| OpStore %44 %66 |
| %67 = OpLoad %46 %48 |
| %69 = OpIAdd %46 %67 %68 |
| OpStore %48 %69 |
| OpBranch %50 |
| %52 = OpLabel |
| %70 = OpLoad %6 %44 |
| %71 = OpFOrdEqual %14 %70 %13 |
| OpSelectionMerge %73 None |
| OpBranchConditional %71 %72 %77 |
| %72 = OpLabel |
| OpStore %75 %76 |
| OpBranch %73 |
| %77 = OpLabel |
| OpStore %75 %78 |
| OpBranch %73 |
| %73 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %10 = OpFunction %6 None %8 |
| %9 = OpFunctionParameter %7 |
| %11 = OpLabel |
| %12 = OpLoad %6 %9 |
| %15 = OpFOrdGreaterThan %14 %12 %13 |
| OpSelectionMerge %17 None |
| OpBranchConditional %15 %16 %17 |
| %16 = OpLabel |
| %24 = OpAccessChain %23 %20 %22 |
| %25 = OpLoad %6 %24 |
| %27 = OpFOrdLessThan %14 %25 %26 |
| OpSelectionMerge %29 None |
| OpBranchConditional %27 %28 %31 |
| %28 = OpLabel |
| OpKill |
| %31 = OpLabel |
| %33 = OpAccessChain %23 %20 %32 |
| %34 = OpLoad %6 %33 |
| %35 = OpFOrdLessThan %14 %34 %26 |
| OpSelectionMerge %37 None |
| OpBranchConditional %35 %36 %37 |
| %36 = OpLabel |
| OpKill |
| %37 = OpLabel |
| OpBranch %29 |
| %29 = OpLabel |
| OpBranch %17 |
| %17 = OpLabel |
| %39 = OpLoad %6 %9 |
| %41 = OpFAdd %6 %39 %40 |
| OpReturnValue %41 |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # five |
| BUFFER variant_five DATA_TYPE int32 DATA |
| 5 |
| 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_five 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 |