160 lines
4.8 KiB
Plaintext
160 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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#
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# void main()
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# {
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# bool b = false;
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#
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# // A single loop with i = 1.
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# for(int i = 1; i > 0; i--)
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# {
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# float a = 1.0 + float(i);
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#
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# // If condition is always true.
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# if(2.0 - a == 0.0)
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# b = true;
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# }
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#
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# // If condition is always true.
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# if (b)
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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: 48
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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" %44
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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 "b"
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OpName %12 "i"
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OpName %24 "a"
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OpName %44 "_GLF_color"
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OpDecorate %12 RelaxedPrecision
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OpDecorate %19 RelaxedPrecision
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OpDecorate %26 RelaxedPrecision
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OpDecorate %37 RelaxedPrecision
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OpDecorate %38 RelaxedPrecision
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OpDecorate %44 Location 0
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeBool
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%7 = OpTypePointer Function %6
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%9 = OpConstantFalse %6
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%10 = OpTypeInt 32 1
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%11 = OpTypePointer Function %10
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%13 = OpConstant %10 1
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%20 = OpConstant %10 0
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%22 = OpTypeFloat 32
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%23 = OpTypePointer Function %22
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%25 = OpConstant %22 1
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%29 = OpConstant %22 2
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%32 = OpConstant %22 0
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%36 = OpConstantTrue %6
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%42 = OpTypeVector %22 4
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%43 = OpTypePointer Output %42
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%44 = OpVariable %43 Output
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%45 = OpConstantComposite %42 %25 %32 %32 %25
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%47 = OpConstantComposite %42 %32 %32 %32 %32
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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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%12 = OpVariable %11 Function
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%24 = OpVariable %23 Function
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OpStore %8 %9
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OpStore %12 %13
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OpBranch %14
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%14 = OpLabel
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OpLoopMerge %16 %17 None
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OpBranch %18
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%18 = OpLabel
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%19 = OpLoad %10 %12
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%21 = OpSGreaterThan %6 %19 %20
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OpBranchConditional %21 %15 %16
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%15 = OpLabel
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%26 = OpLoad %10 %12
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%27 = OpConvertSToF %22 %26
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%28 = OpFAdd %22 %25 %27
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OpStore %24 %28
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%30 = OpLoad %22 %24
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%31 = OpFSub %22 %29 %30
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%33 = OpFOrdEqual %6 %31 %32
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OpSelectionMerge %35 None
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OpBranchConditional %33 %34 %35
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%34 = OpLabel
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OpStore %8 %36
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OpBranch %35
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%35 = OpLabel
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OpBranch %17
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%17 = OpLabel
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%37 = OpLoad %10 %12
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%38 = OpISub %10 %37 %13
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OpStore %12 %38
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OpBranch %14
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%16 = OpLabel
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%39 = OpLoad %6 %8
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OpSelectionMerge %41 None
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OpBranchConditional %39 %40 %46
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%40 = OpLabel
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OpStore %44 %45
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OpBranch %41
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%46 = OpLabel
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OpStore %44 %47
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OpBranch %41
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%41 = OpLabel
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OpReturn
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OpFunctionEnd
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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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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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