173 lines
4.9 KiB
Plaintext
173 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 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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# precision highp int;
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#
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# layout(location = 0) out vec4 _GLF_color;
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#
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# layout(set = 0, binding = 0) uniform buf0
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# {
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# int one;
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# };
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#
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# int func()
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# {
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# int ret = 0;
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#
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# for(int i = 3; i > (i & 1); i -= one)
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# ret++;
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#
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# return ret;
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# }
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#
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# void main()
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# {
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# if (func() == 2)
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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: 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" %47
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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 "func("
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OpName %11 "ret"
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OpName %13 "i"
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OpName %28 "buf0"
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OpMemberName %28 0 "one"
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OpName %30 ""
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OpName %47 "_GLF_color"
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OpMemberDecorate %28 0 Offset 0
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OpDecorate %28 Block
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OpDecorate %30 DescriptorSet 0
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OpDecorate %30 Binding 0
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OpDecorate %47 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 = OpTypeFunction %6
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%10 = OpTypePointer Function %6
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%12 = OpConstant %6 0
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%14 = OpConstant %6 3
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%22 = OpConstant %6 1
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%24 = OpTypeBool
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%28 = OpTypeStruct %6
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%29 = OpTypePointer Uniform %28
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%30 = OpVariable %29 Uniform
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%31 = OpTypePointer Uniform %6
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%40 = OpConstant %6 2
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%44 = OpTypeFloat 32
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%45 = OpTypeVector %44 4
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%46 = OpTypePointer Output %45
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%47 = OpVariable %46 Output
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%48 = OpConstant %44 1
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%49 = OpConstant %44 0
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%50 = OpConstantComposite %45 %48 %49 %49 %48
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%52 = OpConstantComposite %45 %49 %49 %49 %49
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%39 = OpFunctionCall %6 %8
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%41 = OpIEqual %24 %39 %40
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OpSelectionMerge %43 None
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OpBranchConditional %41 %42 %51
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%42 = OpLabel
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OpStore %47 %50
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OpBranch %43
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%51 = OpLabel
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OpStore %47 %52
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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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%8 = OpFunction %6 None %7
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%9 = OpLabel
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%11 = OpVariable %10 Function
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%13 = OpVariable %10 Function
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OpStore %11 %12
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OpStore %13 %14
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OpBranch %15
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%15 = OpLabel
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OpLoopMerge %17 %18 None
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OpBranch %19
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%19 = OpLabel
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%20 = OpLoad %6 %13
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%21 = OpLoad %6 %13
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%23 = OpBitwiseAnd %6 %21 %22
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%25 = OpSGreaterThan %24 %20 %23
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OpBranchConditional %25 %16 %17
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%16 = OpLabel
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%26 = OpLoad %6 %11
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%27 = OpIAdd %6 %26 %22
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OpStore %11 %27
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OpBranch %18
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%18 = OpLabel
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%32 = OpAccessChain %31 %30 %12
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%33 = OpLoad %6 %32
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%34 = OpLoad %6 %13
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%35 = OpISub %6 %34 %33
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OpStore %13 %35
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OpBranch %15
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%17 = OpLabel
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%36 = OpLoad %6 %11
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OpReturnValue %36
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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 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 256 256
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BIND BUFFER variant_framebuffer AS color LOCATION 0
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BIND BUFFER variant_one 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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