| #!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 conditional return inside an infinite loop |
| |
| # The test passes because the shader always writes the color red. |
| |
| 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 injectionSwitch; |
| # }; |
| # |
| # int GLF_live6tree[10]; |
| # |
| # int GLF_live6search() |
| # { |
| # // This function is never accessed |
| # int GLF_live6currentNode; |
| # int GLF_live6index = 0; |
| # while (true) |
| # { |
| # GLF_live6currentNode = GLF_live6tree[GLF_live6index]; |
| # if (GLF_live6currentNode != 1) |
| # { |
| # return 1; |
| # } |
| # GLF_live6index = 1; |
| # } |
| # return 1; |
| # } |
| # |
| # void main() |
| # { |
| # if (injectionSwitch.x > 1.0) // Always false |
| # { |
| # GLF_live6search(); |
| # } |
| # _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: 57 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %54 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "GLF_live6search(" |
| OpName %11 "GLF_live6index" |
| OpName %20 "GLF_live6currentNode" |
| OpName %25 "GLF_live6tree" |
| OpName %40 "buf0" |
| OpMemberName %40 0 "injectionSwitch" |
| OpName %42 "" |
| OpName %54 "_GLF_color" |
| OpDecorate %8 RelaxedPrecision |
| OpDecorate %11 RelaxedPrecision |
| OpDecorate %20 RelaxedPrecision |
| OpDecorate %25 RelaxedPrecision |
| OpDecorate %26 RelaxedPrecision |
| OpDecorate %29 RelaxedPrecision |
| OpDecorate %30 RelaxedPrecision |
| OpMemberDecorate %40 0 Offset 0 |
| OpDecorate %40 Block |
| OpDecorate %42 DescriptorSet 0 |
| OpDecorate %42 Binding 0 |
| OpDecorate %51 RelaxedPrecision |
| OpDecorate %54 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypeFunction %6 |
| %10 = OpTypePointer Function %6 |
| %12 = OpConstant %6 0 |
| %18 = OpTypeBool |
| %19 = OpConstantTrue %18 |
| %21 = OpTypeInt 32 0 |
| %22 = OpConstant %21 10 |
| %23 = OpTypeArray %6 %22 |
| %24 = OpTypePointer Private %23 |
| %25 = OpVariable %24 Private |
| %27 = OpTypePointer Private %6 |
| %31 = OpConstant %6 1 |
| %38 = OpTypeFloat 32 |
| %39 = OpTypeVector %38 2 |
| %40 = OpTypeStruct %39 |
| %41 = OpTypePointer Uniform %40 |
| %42 = OpVariable %41 Uniform |
| %43 = OpConstant %21 0 |
| %44 = OpTypePointer Uniform %38 |
| %47 = OpConstant %38 1 |
| %52 = OpTypeVector %38 4 |
| %53 = OpTypePointer Output %52 |
| %54 = OpVariable %53 Output |
| %55 = OpConstant %38 0 |
| %56 = OpConstantComposite %52 %47 %55 %55 %47 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %45 = OpAccessChain %44 %42 %12 %43 |
| %46 = OpLoad %38 %45 |
| %48 = OpFOrdGreaterThan %18 %46 %47 |
| OpSelectionMerge %50 None |
| OpBranchConditional %48 %49 %50 |
| %49 = OpLabel |
| %51 = OpFunctionCall %6 %8 |
| OpBranch %50 |
| %50 = OpLabel |
| OpStore %54 %56 |
| OpReturn |
| OpFunctionEnd |
| %8 = OpFunction %6 None %7 |
| %9 = OpLabel |
| %11 = OpVariable %10 Function |
| %20 = OpVariable %10 Function |
| OpStore %11 %12 |
| OpBranch %13 |
| %13 = OpLabel |
| OpLoopMerge %15 %16 None |
| OpBranch %17 |
| %17 = OpLabel |
| OpBranchConditional %19 %14 %15 |
| %14 = OpLabel |
| %26 = OpLoad %6 %11 |
| %28 = OpAccessChain %27 %25 %26 |
| %29 = OpLoad %6 %28 |
| OpStore %20 %29 |
| %30 = OpLoad %6 %20 |
| %32 = OpINotEqual %18 %30 %31 |
| OpSelectionMerge %34 None |
| OpBranchConditional %32 %33 %34 |
| %33 = OpLabel |
| OpReturnValue %31 |
| %34 = OpLabel |
| OpStore %11 %31 |
| OpBranch %16 |
| %16 = OpLabel |
| OpBranch %13 |
| %15 = OpLabel |
| OpReturnValue %31 |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # injectionSwitch |
| BUFFER variant_injectionSwitch DATA_TYPE vec2<float> DATA |
| 0.0 1.0 |
| 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 |
| BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 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 |