| #!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: Fragment shader that writes red despite unreachable loops |
| |
| # The test passes because red is written, and the loops inside the if (one of |
| # which would be infinite) are dynamically unreachable due to the runtime content |
| # of 'injected'. |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 310 es |
| # precision highp float; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # layout(set = 0, binding = 0) uniform buf0 { |
| # vec2 injected; |
| # }; |
| # |
| # void main() |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # if (injected.x > injected.y) { |
| # do |
| # { |
| # } |
| # while(false); |
| # { |
| # for( |
| # int m = 1; |
| # true; |
| # 1 |
| # ) |
| # { |
| # _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: 45 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %9 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "_GLF_color" |
| OpName %14 "buf0" |
| OpMemberName %14 0 "injected" |
| OpName %16 "" |
| OpName %37 "m" |
| OpDecorate %9 Location 0 |
| OpMemberDecorate %14 0 Offset 0 |
| OpDecorate %14 Block |
| OpDecorate %16 DescriptorSet 0 |
| OpDecorate %16 Binding 0 |
| OpDecorate %37 RelaxedPrecision |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 4 |
| %8 = OpTypePointer Output %7 |
| %9 = OpVariable %8 Output |
| %10 = OpConstant %6 1 |
| %11 = OpConstant %6 0 |
| %12 = OpConstantComposite %7 %10 %11 %11 %10 |
| %13 = OpTypeVector %6 2 |
| %14 = OpTypeStruct %13 |
| %15 = OpTypePointer Uniform %14 |
| %16 = OpVariable %15 Uniform |
| %17 = OpTypeInt 32 1 |
| %18 = OpConstant %17 0 |
| %19 = OpTypeInt 32 0 |
| %20 = OpConstant %19 0 |
| %21 = OpTypePointer Uniform %6 |
| %24 = OpConstant %19 1 |
| %27 = OpTypeBool |
| %35 = OpConstantFalse %27 |
| %36 = OpTypePointer Function %17 |
| %38 = OpConstant %17 1 |
| %44 = OpConstantTrue %27 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %37 = OpVariable %36 Function |
| OpStore %9 %12 |
| %22 = OpAccessChain %21 %16 %18 %20 |
| %23 = OpLoad %6 %22 |
| %25 = OpAccessChain %21 %16 %18 %24 |
| %26 = OpLoad %6 %25 |
| %28 = OpFOrdGreaterThan %27 %23 %26 |
| OpSelectionMerge %30 None |
| OpBranchConditional %28 %29 %30 |
| %29 = OpLabel |
| OpBranch %31 |
| %31 = OpLabel |
| OpLoopMerge %33 %34 None |
| OpBranch %32 |
| %32 = OpLabel |
| OpBranch %34 |
| %34 = OpLabel |
| OpBranchConditional %35 %31 %33 |
| %33 = OpLabel |
| OpStore %37 %38 |
| OpBranch %39 |
| %39 = OpLabel |
| OpLoopMerge %41 %42 None |
| OpBranch %43 |
| %43 = OpLabel |
| OpBranchConditional %44 %40 %41 |
| %40 = OpLabel |
| OpStore %9 %12 |
| OpBranch %42 |
| %42 = OpLabel |
| OpBranch %39 |
| %41 = OpLabel |
| OpBranch %30 |
| %30 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # resolution |
| BUFFER variant_resolution DATA_TYPE vec2<float> DATA |
| 0.0 1.0 |
| END |
| |
| BUFFER framebuffer FORMAT B8G8R8A8_UNORM |
| |
| PIPELINE graphics gfz_pipeline |
| ATTACH variant_vertex_shader |
| ATTACH variant_fragment_shader |
| FRAMEBUFFER_SIZE 256 256 |
| BIND BUFFER framebuffer AS color LOCATION 0 |
| BIND BUFFER variant_resolution AS uniform DESCRIPTOR_SET 0 BINDING 0 |
| END |
| CLEAR_COLOR gfz_pipeline 0 0 0 255 |
| |
| CLEAR gfz_pipeline |
| RUN gfz_pipeline DRAW_RECT POS 0 0 SIZE 256 256 |
| EXPECT framebuffer IDX 0 0 SIZE 256 256 EQ_RGB 255 0 0 |