| #!amber |
| |
| # Copyright 2019 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 shader with a discard in a loop |
| |
| # The test passes because the discard is always reached, so the background colour will remain black. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '-O' |
| # spirv-opt commit hash: 6b072126595dd8c2448eb1fda616251c5e6d7079 |
| |
| |
| |
| 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; |
| # |
| # void main() |
| # { |
| # for(int i = 0; i < 10; i++) |
| # { |
| # if(gl_FragCoord.y < 0.0) |
| # { |
| # if(gl_FragCoord.x < 0.0) |
| # { |
| # break; |
| # } |
| # continue; |
| # } |
| # discard; |
| # } |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 64 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %22 %45 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %22 "gl_FragCoord" |
| OpName %45 "_GLF_color" |
| OpDecorate %22 BuiltIn FragCoord |
| OpDecorate %45 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %9 = OpConstant %6 0 |
| %16 = OpConstant %6 10 |
| %17 = OpTypeBool |
| %19 = OpTypeFloat 32 |
| %20 = OpTypeVector %19 4 |
| %21 = OpTypePointer Input %20 |
| %22 = OpVariable %21 Input |
| %23 = OpTypeInt 32 0 |
| %24 = OpConstant %23 1 |
| %25 = OpTypePointer Input %19 |
| %28 = OpConstant %19 0 |
| %32 = OpConstant %23 0 |
| %42 = OpConstant %6 1 |
| %44 = OpTypePointer Output %20 |
| %45 = OpVariable %44 Output |
| %46 = OpConstant %19 1 |
| %47 = OpConstantComposite %20 %46 %28 %28 %46 |
| %55 = OpConstantFalse %17 |
| %58 = OpConstantTrue %17 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| OpBranch %52 |
| %52 = OpLabel |
| OpLoopMerge %51 %54 None |
| OpBranch %10 |
| %10 = OpLabel |
| %61 = OpPhi %6 %9 %52 %43 %37 |
| %18 = OpSLessThan %17 %61 %16 |
| OpLoopMerge %12 %37 None |
| OpBranchConditional %18 %11 %12 |
| %11 = OpLabel |
| %26 = OpAccessChain %25 %22 %24 |
| %27 = OpLoad %19 %26 |
| %29 = OpFOrdLessThan %17 %27 %28 |
| OpSelectionMerge %31 None |
| OpBranchConditional %29 %30 %31 |
| %30 = OpLabel |
| %33 = OpAccessChain %25 %22 %32 |
| %34 = OpLoad %19 %33 |
| %35 = OpFOrdLessThan %17 %34 %28 |
| OpSelectionMerge %63 None |
| OpBranchConditional %35 %36 %37 |
| %36 = OpLabel |
| OpBranch %12 |
| %63 = OpLabel |
| OpBranch %37 |
| %37 = OpLabel |
| %43 = OpIAdd %6 %61 %42 |
| OpBranch %10 |
| %31 = OpLabel |
| %50 = OpFunctionCall %2 %48 |
| OpBranch %12 |
| %12 = OpLabel |
| %62 = OpPhi %17 %55 %10 %55 %36 %58 %31 |
| OpSelectionMerge %59 None |
| OpBranchConditional %62 %51 %59 |
| %59 = OpLabel |
| OpStore %45 %47 |
| OpBranch %51 |
| %54 = OpLabel |
| OpBranch %52 |
| %51 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %48 = OpFunction %2 None %3 |
| %49 = OpLabel |
| OpKill |
| 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 0 0 0 255 |