160 lines
4.9 KiB
Plaintext
160 lines
4.9 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 instruction folding path.
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# The test passes because shader always writes red.
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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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# 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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# vec2 twoandthree; // (2.0, 3.0)
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# };
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#
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# void main()
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# {
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# vec2 a = twoandthree;
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# vec2 b = vec2(a.x, clamp(a, vec2(1), vec2(1)).y);
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#
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# // Always true
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# if (b.x == 2.0 && b.y == 1.0)
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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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# }
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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: 51
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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" %46
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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 "a"
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OpName %10 "buf0"
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OpMemberName %10 0 "twoandthree"
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OpName %12 ""
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OpName %18 "b"
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OpName %46 "_GLF_color"
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OpMemberDecorate %10 0 Offset 0
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OpDecorate %10 Block
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OpDecorate %12 DescriptorSet 0
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OpDecorate %12 Binding 0
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OpDecorate %46 Location 0
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeFloat 32
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%7 = OpTypeVector %6 2
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%8 = OpTypePointer Function %7
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%10 = OpTypeStruct %7
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%11 = OpTypePointer Uniform %10
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%12 = OpVariable %11 Uniform
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%13 = OpTypeInt 32 1
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%14 = OpConstant %13 0
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%15 = OpTypePointer Uniform %7
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%19 = OpTypeInt 32 0
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%20 = OpConstant %19 0
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%21 = OpTypePointer Function %6
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%25 = OpConstant %6 1
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%26 = OpConstantComposite %7 %25 %25
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%28 = OpConstant %19 1
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%31 = OpTypeBool
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%34 = OpConstant %6 2
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%44 = OpTypeVector %6 4
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%45 = OpTypePointer Output %44
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%46 = OpVariable %45 Output
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%47 = OpConstant %6 0
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%48 = OpConstantComposite %44 %25 %47 %47 %25
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%50 = OpConstantComposite %44 %47 %47 %47 %47
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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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%18 = OpVariable %8 Function
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%16 = OpAccessChain %15 %12 %14
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%17 = OpLoad %7 %16
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OpStore %9 %17
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%22 = OpAccessChain %21 %9 %20
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%23 = OpLoad %6 %22
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%24 = OpLoad %7 %9
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%27 = OpExtInst %7 %1 FClamp %24 %26 %26
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%29 = OpCompositeExtract %6 %27 1
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%30 = OpCompositeConstruct %7 %23 %29
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OpStore %18 %30
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%32 = OpAccessChain %21 %18 %20
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%33 = OpLoad %6 %32
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%35 = OpFOrdEqual %31 %33 %34
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OpSelectionMerge %37 None
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OpBranchConditional %35 %36 %37
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%36 = OpLabel
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%38 = OpAccessChain %21 %18 %28
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%39 = OpLoad %6 %38
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%40 = OpFOrdEqual %31 %39 %25
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OpBranch %37
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%37 = OpLabel
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%41 = OpPhi %31 %35 %5 %40 %36
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OpSelectionMerge %43 None
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OpBranchConditional %41 %42 %49
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%42 = OpLabel
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OpStore %46 %48
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OpBranch %43
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%49 = OpLabel
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OpStore %46 %50
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OpBranch %43
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%43 = 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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# twoandthree
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BUFFER variant_twoandthree DATA_TYPE vec2<float> DATA
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2.0 3.0
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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_twoandthree 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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