184 lines
5.3 KiB
Plaintext
184 lines
5.3 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 load size reduction 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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# '-Os'
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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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#
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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 zero;
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# };
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#
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# struct S
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# {
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# int x[1];
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# };
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#
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# // Function returns 1 or 2.
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# int func(S s, int a)
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# {
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# _GLF_color = vec4(0);
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#
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# if(s.x[zero] == a)
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# return 1;
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#
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# return 2;
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# }
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#
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# void main()
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# {
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# S s; // Uninitialized. Contents don't matter.
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# int res = func(s, s.x[0]);
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# // Always true.
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# if (res == 1 || res == 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: 97
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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" %21
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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 %21 "_GLF_color"
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OpName %25 "buf0"
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OpMemberName %25 0 "zero"
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OpName %27 ""
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OpDecorate %21 Location 0
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OpMemberDecorate %25 0 RelaxedPrecision
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OpMemberDecorate %25 0 Offset 0
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OpDecorate %25 Block
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OpDecorate %27 DescriptorSet 0
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OpDecorate %27 Binding 0
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OpDecorate %49 RelaxedPrecision
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OpDecorate %79 RelaxedPrecision
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OpDecorate %81 RelaxedPrecision
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OpDecorate %88 RelaxedPrecision
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OpDecorate %96 RelaxedPrecision
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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 = OpTypeInt 32 0
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%8 = OpConstant %7 1
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%9 = OpTypeArray %6 %8
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%12 = OpTypePointer Function %6
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%18 = OpTypeFloat 32
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%19 = OpTypeVector %18 4
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%20 = OpTypePointer Output %19
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%21 = OpVariable %20 Output
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%22 = OpConstant %18 0
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%23 = OpConstantComposite %19 %22 %22 %22 %22
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%24 = OpConstant %6 0
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%25 = OpTypeStruct %6
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%26 = OpTypePointer Uniform %25
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%27 = OpVariable %26 Uniform
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%28 = OpTypePointer Uniform %6
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%34 = OpTypeBool
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%38 = OpConstant %6 1
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%40 = OpConstant %6 2
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%58 = OpConstant %18 1
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%59 = OpConstantComposite %19 %58 %22 %22 %58
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%87 = OpTypePointer Function %9
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%88 = OpVariable %87 Function
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%89 = OpLoad %9 %88
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%49 = OpCompositeExtract %6 %89 0
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OpBranch %74
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%74 = OpLabel
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OpLoopMerge %75 %76 None
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OpBranch %77
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%77 = OpLabel
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OpStore %21 %23
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%78 = OpAccessChain %28 %27 %24
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%79 = OpLoad %6 %78
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%94 = OpAccessChain %12 %88 %79
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%81 = OpLoad %6 %94
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%83 = OpIEqual %34 %81 %49
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OpSelectionMerge %84 None
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OpBranchConditional %83 %85 %84
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%85 = OpLabel
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OpBranch %75
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%84 = OpLabel
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OpBranch %75
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%76 = OpLabel
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OpBranch %74
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%75 = OpLabel
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%96 = OpPhi %6 %38 %85 %40 %84
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%52 = OpIEqual %34 %96 %38
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%54 = OpIEqual %34 %96 %40
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%55 = OpLogicalOr %34 %52 %54
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OpSelectionMerge %57 None
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OpBranchConditional %55 %56 %60
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%60 = OpLabel
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OpStore %21 %23
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OpBranch %57
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%56 = OpLabel
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OpStore %21 %59
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OpBranch %57
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%57 = 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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# zero
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BUFFER variant_zero DATA_TYPE int32 DATA
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0
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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_zero 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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