137 lines
4.1 KiB
Plaintext
137 lines
4.1 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(set = 0, binding = 0) uniform buf0
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# {
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# float four;
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# };
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# layout(location = 0) out vec4 _GLF_color;
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#
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# void main()
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# {
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# float a = 2.0 / (1.0 / four);
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# // If condition is always true.
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# if (a > 7.9 && a < 8.1)
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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: 38
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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" %33
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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 %8 "a"
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OpName %11 "buf0"
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OpMemberName %11 0 "four"
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OpName %13 ""
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OpName %33 "_GLF_color"
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OpMemberDecorate %11 0 Offset 0
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OpDecorate %11 Block
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OpDecorate %13 DescriptorSet 0
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OpDecorate %13 Binding 0
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OpDecorate %33 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 = OpTypePointer Function %6
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%9 = OpConstant %6 2
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%10 = OpConstant %6 1
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%11 = OpTypeStruct %6
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%12 = OpTypePointer Uniform %11
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%13 = OpVariable %12 Uniform
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%14 = OpTypeInt 32 1
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%15 = OpConstant %14 0
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%16 = OpTypePointer Uniform %6
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%22 = OpConstant %6 7.9000001
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%23 = OpTypeBool
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%26 = OpConstant %6 8.10000038
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%31 = OpTypeVector %6 4
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%32 = OpTypePointer Output %31
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%33 = OpVariable %32 Output
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%34 = OpConstant %6 0
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%35 = OpConstantComposite %31 %10 %34 %34 %10
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%37 = OpConstantComposite %31 %34 %34 %34 %34
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%8 = OpVariable %7 Function
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%17 = OpAccessChain %16 %13 %15
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%18 = OpLoad %6 %17
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%19 = OpFDiv %6 %10 %18
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%20 = OpFDiv %6 %9 %19
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OpStore %8 %20
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%21 = OpLoad %6 %8
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%24 = OpFOrdGreaterThan %23 %21 %22
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%25 = OpLoad %6 %8
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%27 = OpFOrdLessThan %23 %25 %26
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%28 = OpLogicalAnd %23 %24 %27
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OpSelectionMerge %30 None
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OpBranchConditional %28 %29 %36
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%29 = OpLabel
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OpStore %33 %35
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OpBranch %30
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%36 = OpLabel
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OpStore %33 %37
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OpBranch %30
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%30 = 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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# four
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BUFFER variant_four DATA_TYPE float DATA
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4.0
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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_four 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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