| #!amber |
| |
| # Copyright 2020 Google LLC |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| |
| # A test for a bug found by GraphicsFuzz. |
| |
| # Short description: A fragment shader that has nested if condition in do while |
| |
| # The test passes because shader always writes red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--eliminate-dead-code-aggressive' |
| # '--copy-propagate-arrays' |
| # '--copy-propagate-arrays' |
| # '--vector-dce' |
| # '--redundancy-elimination' |
| # '--eliminate-local-single-block' |
| # '--redundancy-elimination' |
| # '--eliminate-dead-branches' |
| # '--merge-return' |
| # '--eliminate-dead-branches' |
| # '--merge-return' |
| # '--combine-access-chains' |
| # '--redundancy-elimination' |
| # '--private-to-local' |
| # '--simplify-instructions' |
| # '--ccp' |
| # '--eliminate-local-multi-store' |
| # '--inline-entry-points-exhaustive' |
| # '--if-conversion' |
| # '--eliminate-dead-inserts' |
| # spirv-opt commit hash: ab7ac60f14ae66006bed5c989a2cfd4c4881704c |
| |
| |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 310 es |
| # precision highp float; |
| # precision highp int; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # float one() |
| # { |
| # return 1.0; |
| # } |
| # |
| # void main() |
| # { |
| # vec2 v = vec2(0); |
| # bool alwaysFalse = gl_FragCoord.x < -1.0; |
| # |
| # do |
| # { |
| # if (v.x < 2.0) // Always true |
| # { |
| # if (!alwaysFalse) |
| # v[int(one())] = 1.0; |
| # } |
| # } while (alwaysFalse); |
| # |
| # if (v[0] == 0.0 && v[1] == 1.0) |
| # _GLF_color = vec4(1, 0, 0, 1); |
| # else |
| # _GLF_color = vec4(0); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 72 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %23 %64 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "one(" |
| OpName %15 "v" |
| OpName %20 "alwaysFalse" |
| OpName %23 "gl_FragCoord" |
| OpName %64 "_GLF_color" |
| OpDecorate %23 BuiltIn FragCoord |
| OpDecorate %64 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeFunction %6 |
| %10 = OpConstant %6 1 |
| %13 = OpTypeVector %6 2 |
| %14 = OpTypePointer Function %13 |
| %16 = OpConstant %6 0 |
| %17 = OpConstantComposite %13 %16 %16 |
| %18 = OpTypeBool |
| %19 = OpTypePointer Function %18 |
| %21 = OpTypeVector %6 4 |
| %22 = OpTypePointer Input %21 |
| %23 = OpVariable %22 Input |
| %24 = OpTypeInt 32 0 |
| %25 = OpConstant %24 0 |
| %26 = OpTypePointer Input %6 |
| %29 = OpConstant %6 -1 |
| %35 = OpTypePointer Function %6 |
| %38 = OpConstant %6 2 |
| %47 = OpTypeInt 32 1 |
| %56 = OpConstant %24 1 |
| %63 = OpTypePointer Output %21 |
| %64 = OpVariable %63 Output |
| %65 = OpConstantComposite %21 %10 %16 %16 %10 |
| %67 = OpConstantComposite %21 %16 %16 %16 %16 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %71 = OpVariable %35 Function |
| %15 = OpVariable %14 Function |
| %20 = OpVariable %19 Function |
| OpStore %15 %17 |
| %27 = OpAccessChain %26 %23 %25 |
| %28 = OpLoad %6 %27 |
| %30 = OpFOrdLessThan %18 %28 %29 |
| OpStore %20 %30 |
| OpBranch %31 |
| %31 = OpLabel |
| OpLoopMerge %33 %34 None |
| OpBranch %32 |
| %32 = OpLabel |
| %36 = OpAccessChain %35 %15 %25 |
| %37 = OpLoad %6 %36 |
| %39 = OpFOrdLessThan %18 %37 %38 |
| OpSelectionMerge %41 None |
| OpBranchConditional %39 %40 %41 |
| %40 = OpLabel |
| %43 = OpLogicalNot %18 %30 |
| OpSelectionMerge %45 None |
| OpBranchConditional %43 %44 %45 |
| %44 = OpLabel |
| OpStore %71 %10 |
| %46 = OpLoad %6 %71 |
| %48 = OpConvertFToS %47 %46 |
| %49 = OpAccessChain %35 %15 %48 |
| OpStore %49 %10 |
| OpBranch %45 |
| %45 = OpLabel |
| OpBranch %41 |
| %41 = OpLabel |
| OpBranch %34 |
| %34 = OpLabel |
| OpBranchConditional %30 %31 %33 |
| %33 = OpLabel |
| %52 = OpLoad %6 %36 |
| %53 = OpFOrdEqual %18 %52 %16 |
| OpSelectionMerge %55 None |
| OpBranchConditional %53 %54 %55 |
| %54 = OpLabel |
| %57 = OpAccessChain %35 %15 %56 |
| %58 = OpLoad %6 %57 |
| %59 = OpFOrdEqual %18 %58 %10 |
| OpBranch %55 |
| %55 = OpLabel |
| %60 = OpPhi %18 %53 %33 %59 %54 |
| OpSelectionMerge %62 None |
| OpBranchConditional %60 %61 %66 |
| %61 = OpLabel |
| OpStore %64 %65 |
| OpBranch %62 |
| %66 = OpLabel |
| OpStore %64 %67 |
| OpBranch %62 |
| %62 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %8 = OpFunction %6 None %7 |
| %9 = OpLabel |
| OpReturnValue %10 |
| OpFunctionEnd |
| END |
| |
| |
| BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM |
| |
| PIPELINE graphics variant_pipeline |
| ATTACH variant_vertex_shader |
| ATTACH variant_fragment_shader |
| FRAMEBUFFER_SIZE 256 256 |
| BIND BUFFER variant_framebuffer AS color LOCATION 0 |
| END |
| CLEAR_COLOR variant_pipeline 0 0 0 255 |
| |
| CLEAR variant_pipeline |
| RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 |
| |
| EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 |