156 lines
4.8 KiB
Plaintext
156 lines
4.8 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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# 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 zeroOne;
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# };
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#
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# void main()
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# {
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# // Since zeroOne is (0, 1) the results will be (2, 5).
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# vec2 v = mix(vec2(2, 3), vec2(4, 5), zeroOne);
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# float d = distance(v, vec2(2, 5));
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#
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# if (d < 0.1)
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# _GLF_color = vec4(v.x - 1.0, v.y - 5.0, 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: 53
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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" %38
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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 "v"
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OpName %16 "buf0"
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OpMemberName %16 0 "zeroOne"
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OpName %18 ""
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OpName %26 "d"
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OpName %38 "_GLF_color"
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OpMemberDecorate %16 0 Offset 0
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OpDecorate %16 Block
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OpDecorate %18 DescriptorSet 0
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OpDecorate %18 Binding 0
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OpDecorate %38 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 = OpConstant %6 2
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%11 = OpConstant %6 3
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%12 = OpConstantComposite %7 %10 %11
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%13 = OpConstant %6 4
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%14 = OpConstant %6 5
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%15 = OpConstantComposite %7 %13 %14
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%16 = OpTypeStruct %7
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%17 = OpTypePointer Uniform %16
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%18 = OpVariable %17 Uniform
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%19 = OpTypeInt 32 1
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%20 = OpConstant %19 0
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%21 = OpTypePointer Uniform %7
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%25 = OpTypePointer Function %6
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%28 = OpConstantComposite %7 %10 %14
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%31 = OpConstant %6 0.100000001
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%32 = OpTypeBool
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%36 = OpTypeVector %6 4
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%37 = OpTypePointer Output %36
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%38 = OpVariable %37 Output
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%39 = OpTypeInt 32 0
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%40 = OpConstant %39 0
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%43 = OpConstant %6 1
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%45 = OpConstant %39 1
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%49 = OpConstant %6 0
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%52 = OpConstantComposite %36 %49 %49 %49 %49
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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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%26 = OpVariable %25 Function
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%22 = OpAccessChain %21 %18 %20
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%23 = OpLoad %7 %22
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%24 = OpExtInst %7 %1 FMix %12 %15 %23
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OpStore %9 %24
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%27 = OpLoad %7 %9
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%29 = OpExtInst %6 %1 Distance %27 %28
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OpStore %26 %29
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%30 = OpLoad %6 %26
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%33 = OpFOrdLessThan %32 %30 %31
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OpSelectionMerge %35 None
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OpBranchConditional %33 %34 %51
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%34 = OpLabel
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%41 = OpAccessChain %25 %9 %40
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%42 = OpLoad %6 %41
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%44 = OpFSub %6 %42 %43
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%46 = OpAccessChain %25 %9 %45
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%47 = OpLoad %6 %46
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%48 = OpFSub %6 %47 %14
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%50 = OpCompositeConstruct %36 %44 %48 %49 %43
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OpStore %38 %50
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OpBranch %35
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%51 = OpLabel
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OpStore %38 %52
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OpBranch %35
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%35 = 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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# zeroOne
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BUFFER variant_zeroOne DATA_TYPE vec2<float> DATA
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0.0 1.0
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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_zeroOne 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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