| #!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 single store elimination path. |
| |
| # The test passes because shader always writes red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--if-conversion' |
| # '--eliminate-local-single-block' |
| # '--redundancy-elimination' |
| # '--reduce-load-size' |
| # 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 one; |
| # }; |
| # |
| # void main() |
| # { |
| # ivec2 v0 = ivec2(0); |
| # ivec2 v1 = ivec2(2); |
| # int a = one; |
| # |
| # do |
| # { |
| # // Always false. |
| # if (a > 10) |
| # { |
| # _GLF_color = vec4(0); |
| # return; |
| # } |
| # |
| # v0 = v1.x > a ? ivec2(0) : ivec2(1); |
| # a++; |
| # } while(a < 9); |
| # |
| # // After the loop v0 == (1, 1). |
| # |
| # if(v1.x > 1) |
| # v0 += ivec2(1); |
| # |
| # if (v0 == ivec2(2)) |
| # _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: 71 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %36 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "v0" |
| OpName %12 "v1" |
| OpName %16 "a" |
| OpName %17 "buf0" |
| OpMemberName %17 0 "one" |
| OpName %19 "" |
| OpName %36 "_GLF_color" |
| OpMemberDecorate %17 0 Offset 0 |
| OpDecorate %17 Block |
| OpDecorate %19 DescriptorSet 0 |
| OpDecorate %19 Binding 0 |
| OpDecorate %36 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypeVector %6 2 |
| %8 = OpTypePointer Function %7 |
| %10 = OpConstant %6 0 |
| %11 = OpConstantComposite %7 %10 %10 |
| %13 = OpConstant %6 2 |
| %14 = OpConstantComposite %7 %13 %13 |
| %15 = OpTypePointer Function %6 |
| %17 = OpTypeStruct %6 |
| %18 = OpTypePointer Uniform %17 |
| %19 = OpVariable %18 Uniform |
| %20 = OpTypePointer Uniform %6 |
| %28 = OpConstant %6 10 |
| %29 = OpTypeBool |
| %33 = OpTypeFloat 32 |
| %34 = OpTypeVector %33 4 |
| %35 = OpTypePointer Output %34 |
| %36 = OpVariable %35 Output |
| %37 = OpConstant %33 0 |
| %38 = OpConstantComposite %34 %37 %37 %37 %37 |
| %40 = OpTypeInt 32 0 |
| %41 = OpConstant %40 0 |
| %46 = OpConstant %6 1 |
| %47 = OpConstantComposite %7 %46 %46 |
| %48 = OpTypeVector %29 2 |
| %54 = OpConstant %6 9 |
| %68 = OpConstant %33 1 |
| %69 = OpConstantComposite %34 %68 %37 %37 %68 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %9 = OpVariable %8 Function |
| %12 = OpVariable %8 Function |
| %16 = OpVariable %15 Function |
| OpStore %9 %11 |
| OpStore %12 %14 |
| %21 = OpAccessChain %20 %19 %10 |
| %22 = OpLoad %6 %21 |
| OpStore %16 %22 |
| OpBranch %23 |
| %23 = OpLabel |
| OpLoopMerge %25 %26 None |
| OpBranch %24 |
| %24 = OpLabel |
| %27 = OpLoad %6 %16 |
| %30 = OpSGreaterThan %29 %27 %28 |
| OpSelectionMerge %32 None |
| OpBranchConditional %30 %31 %32 |
| %31 = OpLabel |
| OpStore %36 %38 |
| OpReturn |
| %32 = OpLabel |
| %42 = OpAccessChain %15 %12 %41 |
| %43 = OpLoad %6 %42 |
| %44 = OpLoad %6 %16 |
| %45 = OpSGreaterThan %29 %43 %44 |
| %49 = OpCompositeConstruct %48 %45 %45 |
| %50 = OpSelect %7 %49 %11 %47 |
| OpStore %9 %50 |
| %52 = OpIAdd %6 %44 %46 |
| OpStore %16 %52 |
| OpBranch %26 |
| %26 = OpLabel |
| %53 = OpLoad %6 %16 |
| %55 = OpSLessThan %29 %53 %54 |
| OpBranchConditional %55 %23 %25 |
| %25 = OpLabel |
| %57 = OpLoad %6 %42 |
| %58 = OpSGreaterThan %29 %57 %46 |
| OpSelectionMerge %60 None |
| OpBranchConditional %58 %59 %60 |
| %59 = OpLabel |
| %61 = OpLoad %7 %9 |
| %62 = OpIAdd %7 %61 %47 |
| OpStore %9 %62 |
| OpBranch %60 |
| %60 = OpLabel |
| %63 = OpLoad %7 %9 |
| %64 = OpIEqual %48 %63 %14 |
| %65 = OpAll %29 %64 |
| OpSelectionMerge %67 None |
| OpBranchConditional %65 %66 %70 |
| %66 = OpLabel |
| OpStore %36 %69 |
| OpBranch %67 |
| %70 = OpLabel |
| OpStore %36 %38 |
| OpBranch %67 |
| %67 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # one |
| BUFFER variant_one DATA_TYPE int32 DATA |
| 1 |
| 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_one 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 |