209 lines
6.1 KiB
Plaintext
209 lines
6.1 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 bug found by GraphicsFuzz.
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# Short description: A fragment shader that has nested if condition in do while
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# The test passes because shader always writes red.
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# Optimized using spirv-opt with the following arguments:
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# '--eliminate-dead-code-aggressive'
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# '--copy-propagate-arrays'
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# '--copy-propagate-arrays'
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# '--vector-dce'
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# '--redundancy-elimination'
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# '--eliminate-local-single-block'
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# '--redundancy-elimination'
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# '--eliminate-dead-branches'
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# '--merge-return'
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# '--eliminate-dead-branches'
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# '--merge-return'
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# '--combine-access-chains'
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# '--redundancy-elimination'
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# '--private-to-local'
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# '--simplify-instructions'
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# '--ccp'
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# '--eliminate-local-multi-store'
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# '--inline-entry-points-exhaustive'
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# '--if-conversion'
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# '--eliminate-dead-inserts'
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# spirv-opt commit hash: ab7ac60f14ae66006bed5c989a2cfd4c4881704c
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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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# float one()
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# {
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# return 1.0;
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# }
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#
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# void main()
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# {
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# vec2 v = vec2(0);
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# bool alwaysFalse = gl_FragCoord.x < -1.0;
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#
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# do
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# {
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# if (v.x < 2.0) // Always true
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# {
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# if (!alwaysFalse)
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# v[int(one())] = 1.0;
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# }
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# } while (alwaysFalse);
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#
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# if (v[0] == 0.0 && v[1] == 1.0)
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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: 72
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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" %23 %64
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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 "one("
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OpName %15 "v"
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OpName %20 "alwaysFalse"
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OpName %23 "gl_FragCoord"
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OpName %64 "_GLF_color"
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OpDecorate %23 BuiltIn FragCoord
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OpDecorate %64 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 = OpTypeFunction %6
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%10 = OpConstant %6 1
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%13 = OpTypeVector %6 2
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%14 = OpTypePointer Function %13
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%16 = OpConstant %6 0
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%17 = OpConstantComposite %13 %16 %16
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%18 = OpTypeBool
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%19 = OpTypePointer Function %18
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%21 = OpTypeVector %6 4
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%22 = OpTypePointer Input %21
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%23 = OpVariable %22 Input
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%24 = OpTypeInt 32 0
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%25 = OpConstant %24 0
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%26 = OpTypePointer Input %6
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%29 = OpConstant %6 -1
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%35 = OpTypePointer Function %6
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%38 = OpConstant %6 2
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%47 = OpTypeInt 32 1
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%56 = OpConstant %24 1
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%63 = OpTypePointer Output %21
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%64 = OpVariable %63 Output
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%65 = OpConstantComposite %21 %10 %16 %16 %10
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%67 = OpConstantComposite %21 %16 %16 %16 %16
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%71 = OpVariable %35 Function
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%15 = OpVariable %14 Function
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%20 = OpVariable %19 Function
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OpStore %15 %17
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%27 = OpAccessChain %26 %23 %25
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%28 = OpLoad %6 %27
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%30 = OpFOrdLessThan %18 %28 %29
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OpStore %20 %30
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OpBranch %31
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%31 = OpLabel
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OpLoopMerge %33 %34 None
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OpBranch %32
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%32 = OpLabel
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%36 = OpAccessChain %35 %15 %25
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%37 = OpLoad %6 %36
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%39 = OpFOrdLessThan %18 %37 %38
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OpSelectionMerge %41 None
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OpBranchConditional %39 %40 %41
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%40 = OpLabel
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%43 = OpLogicalNot %18 %30
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OpSelectionMerge %45 None
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OpBranchConditional %43 %44 %45
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%44 = OpLabel
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OpStore %71 %10
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%46 = OpLoad %6 %71
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%48 = OpConvertFToS %47 %46
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%49 = OpAccessChain %35 %15 %48
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OpStore %49 %10
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OpBranch %45
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%45 = OpLabel
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OpBranch %41
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%41 = OpLabel
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OpBranch %34
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%34 = OpLabel
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OpBranchConditional %30 %31 %33
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%33 = OpLabel
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%52 = OpLoad %6 %36
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%53 = OpFOrdEqual %18 %52 %16
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OpSelectionMerge %55 None
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OpBranchConditional %53 %54 %55
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%54 = OpLabel
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%57 = OpAccessChain %35 %15 %56
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%58 = OpLoad %6 %57
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%59 = OpFOrdEqual %18 %58 %10
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OpBranch %55
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%55 = OpLabel
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%60 = OpPhi %18 %53 %33 %59 %54
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OpSelectionMerge %62 None
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OpBranchConditional %60 %61 %66
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%61 = OpLabel
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OpStore %64 %65
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OpBranch %62
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%66 = OpLabel
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OpStore %64 %67
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OpBranch %62
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%62 = 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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OpReturnValue %10
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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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