216 lines
6.2 KiB
Plaintext
216 lines
6.2 KiB
Plaintext
#!amber
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# Copyright 2020 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# A test for a coverage-gap found by GraphicsFuzz.
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# Short description: A fragment shader that covers a specific single store elimination path.
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# The test passes because shader always writes red.
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# Optimized using spirv-opt with the following arguments:
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# '--if-conversion'
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# '--eliminate-local-single-block'
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# '--redundancy-elimination'
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# '--reduce-load-size'
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# spirv-opt commit hash: 9215c1b7df0029f27807e8c8d7ec80532ce90a87
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SHADER vertex variant_vertex_shader PASSTHROUGH
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# variant_fragment_shader is derived from the following GLSL:
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# #version 310 es
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# precision highp float;
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# precision highp int;
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#
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# layout(location = 0) out vec4 _GLF_color;
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# layout(set = 0, binding = 0) uniform buf0
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# {
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# int one;
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# };
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#
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# void main()
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# {
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# ivec2 v0 = ivec2(0);
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# ivec2 v1 = ivec2(2);
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# int a = one;
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#
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# do
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# {
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# // Always false.
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# if (a > 10)
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# {
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# _GLF_color = vec4(0);
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# return;
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# }
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#
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# v0 = v1.x > a ? ivec2(0) : ivec2(1);
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# a++;
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# } while(a < 9);
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#
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# // After the loop v0 == (1, 1).
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#
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# if(v1.x > 1)
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# v0 += ivec2(1);
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#
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# if (v0 == ivec2(2))
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# _GLF_color = vec4(1, 0, 0, 1);
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# else
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# _GLF_color = vec4(0);
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# }
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SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
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; SPIR-V
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; Version: 1.0
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; Generator: Khronos Glslang Reference Front End; 8
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; Bound: 71
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; Schema: 0
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %4 "main" %36
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpName %4 "main"
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OpName %9 "v0"
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OpName %12 "v1"
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OpName %16 "a"
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OpName %17 "buf0"
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OpMemberName %17 0 "one"
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OpName %19 ""
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OpName %36 "_GLF_color"
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OpMemberDecorate %17 0 Offset 0
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OpDecorate %17 Block
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OpDecorate %19 DescriptorSet 0
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OpDecorate %19 Binding 0
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OpDecorate %36 Location 0
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeInt 32 1
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%7 = OpTypeVector %6 2
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%8 = OpTypePointer Function %7
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%10 = OpConstant %6 0
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%11 = OpConstantComposite %7 %10 %10
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%13 = OpConstant %6 2
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%14 = OpConstantComposite %7 %13 %13
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%15 = OpTypePointer Function %6
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%17 = OpTypeStruct %6
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%18 = OpTypePointer Uniform %17
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%19 = OpVariable %18 Uniform
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%20 = OpTypePointer Uniform %6
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%28 = OpConstant %6 10
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%29 = OpTypeBool
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%33 = OpTypeFloat 32
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%34 = OpTypeVector %33 4
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%35 = OpTypePointer Output %34
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%36 = OpVariable %35 Output
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%37 = OpConstant %33 0
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%38 = OpConstantComposite %34 %37 %37 %37 %37
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%40 = OpTypeInt 32 0
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%41 = OpConstant %40 0
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%46 = OpConstant %6 1
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%47 = OpConstantComposite %7 %46 %46
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%48 = OpTypeVector %29 2
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%54 = OpConstant %6 9
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%68 = OpConstant %33 1
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%69 = OpConstantComposite %34 %68 %37 %37 %68
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%9 = OpVariable %8 Function
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%12 = OpVariable %8 Function
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%16 = OpVariable %15 Function
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OpStore %9 %11
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OpStore %12 %14
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%21 = OpAccessChain %20 %19 %10
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%22 = OpLoad %6 %21
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OpStore %16 %22
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OpBranch %23
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%23 = OpLabel
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OpLoopMerge %25 %26 None
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OpBranch %24
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%24 = OpLabel
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%27 = OpLoad %6 %16
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%30 = OpSGreaterThan %29 %27 %28
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OpSelectionMerge %32 None
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OpBranchConditional %30 %31 %32
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%31 = OpLabel
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OpStore %36 %38
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OpReturn
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%32 = OpLabel
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%42 = OpAccessChain %15 %12 %41
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%43 = OpLoad %6 %42
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%44 = OpLoad %6 %16
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%45 = OpSGreaterThan %29 %43 %44
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%49 = OpCompositeConstruct %48 %45 %45
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%50 = OpSelect %7 %49 %11 %47
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OpStore %9 %50
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%52 = OpIAdd %6 %44 %46
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OpStore %16 %52
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OpBranch %26
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%26 = OpLabel
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%53 = OpLoad %6 %16
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%55 = OpSLessThan %29 %53 %54
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OpBranchConditional %55 %23 %25
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%25 = OpLabel
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%57 = OpLoad %6 %42
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%58 = OpSGreaterThan %29 %57 %46
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OpSelectionMerge %60 None
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OpBranchConditional %58 %59 %60
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%59 = OpLabel
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%61 = OpLoad %7 %9
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%62 = OpIAdd %7 %61 %47
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OpStore %9 %62
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OpBranch %60
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%60 = OpLabel
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%63 = OpLoad %7 %9
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%64 = OpIEqual %48 %63 %14
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%65 = OpAll %29 %64
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OpSelectionMerge %67 None
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OpBranchConditional %65 %66 %70
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%66 = OpLabel
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OpStore %36 %69
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OpBranch %67
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%70 = OpLabel
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OpStore %36 %38
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OpBranch %67
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%67 = OpLabel
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OpReturn
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OpFunctionEnd
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END
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# uniforms for variant
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# one
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BUFFER variant_one DATA_TYPE int32 DATA
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1
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END
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BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
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PIPELINE graphics variant_pipeline
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ATTACH variant_vertex_shader
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ATTACH variant_fragment_shader
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FRAMEBUFFER_SIZE 256 256
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BIND BUFFER variant_framebuffer AS color LOCATION 0
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BIND BUFFER variant_one AS uniform DESCRIPTOR_SET 0 BINDING 0
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END
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CLEAR_COLOR variant_pipeline 0 0 0 255
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CLEAR variant_pipeline
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RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
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EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
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