170 lines
4.6 KiB
Plaintext
170 lines
4.6 KiB
Plaintext
#!amber
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# Copyright 2022 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 the GraphicsFuzz project.
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# Short description: A fragment shader that covers specific LLVM code paths
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# The test passes because the 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 320 es
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#
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# precision highp float;
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# precision highp int;
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#
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# // Contents of one: 1
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# layout(push_constant) uniform buf_push
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# {
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# int one;
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# };
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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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# int a = 100;
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#
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# do
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# {
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# // Always false.
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# if(one < 1)
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# {
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# break;
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# }
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#
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# a--;
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# }
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# while(a > 1);
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#
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# // Always true.
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# if(a == 1)
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# {
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# _GLF_color = vec4(1, 0, 0, 1);
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# }
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# else
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# {
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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; 10
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; Bound: 44
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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 320
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OpName %4 "main"
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OpName %8 "a"
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OpName %14 "buf_push"
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OpMemberName %14 0 "one"
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OpName %16 ""
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OpName %38 "_GLF_color"
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OpMemberDecorate %14 0 Offset 0
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OpDecorate %14 Block
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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 = OpTypeInt 32 1
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%7 = OpTypePointer Function %6
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%9 = OpConstant %6 100
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%14 = OpTypeStruct %6
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%15 = OpTypePointer PushConstant %14
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%16 = OpVariable %15 PushConstant
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%17 = OpConstant %6 0
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%18 = OpTypePointer PushConstant %6
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%21 = OpConstant %6 1
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%22 = OpTypeBool
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%35 = OpTypeFloat 32
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%36 = OpTypeVector %35 4
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%37 = OpTypePointer Output %36
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%38 = OpVariable %37 Output
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%39 = OpConstant %35 1
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%40 = OpConstant %35 0
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%41 = OpConstantComposite %36 %39 %40 %40 %39
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%43 = OpConstantComposite %36 %40 %40 %40 %40
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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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OpStore %8 %9
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OpBranch %10
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%10 = OpLabel
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OpLoopMerge %12 %13 None
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OpBranch %11
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%11 = OpLabel
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%19 = OpAccessChain %18 %16 %17
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%20 = OpLoad %6 %19
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%23 = OpSLessThan %22 %20 %21
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OpSelectionMerge %25 None
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OpBranchConditional %23 %24 %25
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%24 = OpLabel
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OpBranch %12
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%25 = OpLabel
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%27 = OpLoad %6 %8
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%28 = OpISub %6 %27 %21
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OpStore %8 %28
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OpBranch %13
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%13 = OpLabel
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%29 = OpLoad %6 %8
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%30 = OpSGreaterThan %22 %29 %21
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OpBranchConditional %30 %10 %12
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%12 = OpLabel
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%31 = OpLoad %6 %8
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%32 = OpIEqual %22 %31 %21
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OpSelectionMerge %34 None
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OpBranchConditional %32 %33 %42
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%33 = OpLabel
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OpStore %38 %41
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OpBranch %34
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%42 = OpLabel
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OpStore %38 %43
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OpBranch %34
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%34 = 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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# one
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BUFFER variant_one DATA_TYPE int32 STD140 DATA
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1
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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 32 32
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BIND BUFFER variant_framebuffer AS color LOCATION 0
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BIND BUFFER variant_one AS push_constant
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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 32 32
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EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255
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