| #!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 fragment shader with uninitialized read in infinite loop |
| |
| # The test passes because the shader always writes the color red. Uninitialized read in loop is never reached. |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 310 es |
| # precision highp float; |
| # |
| # layout(set = 0, binding = 0) uniform buf0 { |
| # vec2 injectionSwitch; |
| # }; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # |
| # void main() |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); // Write color red |
| # |
| # int donor_replacementGLF_dead6tree[1]; |
| # int GLF_dead6currentNode; |
| # int GLF_dead6index = 0; |
| # |
| # if (injectionSwitch.y < 0.0){ // always false |
| # while (true) |
| # { |
| # GLF_dead6currentNode = donor_replacementGLF_dead6tree[GLF_dead6index]; |
| # GLF_dead6index = GLF_dead6currentNode; |
| # } |
| # } |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 44 |
| ; 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 %15 "GLF_dead6index" |
| OpName %18 "buf0" |
| OpMemberName %18 0 "injectionSwitch" |
| OpName %20 "" |
| OpName %36 "GLF_dead6currentNode" |
| OpName %39 "donor_replacementGLF_dead6tree" |
| OpDecorate %9 Location 0 |
| OpDecorate %15 RelaxedPrecision |
| OpMemberDecorate %18 0 Offset 0 |
| OpDecorate %18 Block |
| OpDecorate %20 DescriptorSet 0 |
| OpDecorate %20 Binding 0 |
| OpDecorate %36 RelaxedPrecision |
| OpDecorate %39 RelaxedPrecision |
| OpDecorate %40 RelaxedPrecision |
| OpDecorate %42 RelaxedPrecision |
| OpDecorate %43 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 = OpTypeInt 32 1 |
| %14 = OpTypePointer Function %13 |
| %16 = OpConstant %13 0 |
| %17 = OpTypeVector %6 2 |
| %18 = OpTypeStruct %17 |
| %19 = OpTypePointer Uniform %18 |
| %20 = OpVariable %19 Uniform |
| %21 = OpTypeInt 32 0 |
| %22 = OpConstant %21 1 |
| %23 = OpTypePointer Uniform %6 |
| %26 = OpTypeBool |
| %35 = OpConstantTrue %26 |
| %37 = OpTypeArray %13 %22 |
| %38 = OpTypePointer Function %37 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %15 = OpVariable %14 Function |
| %36 = OpVariable %14 Function |
| %39 = OpVariable %38 Function |
| OpStore %9 %12 |
| OpStore %15 %16 |
| %24 = OpAccessChain %23 %20 %16 %22 |
| %25 = OpLoad %6 %24 |
| %27 = OpFOrdLessThan %26 %25 %11 |
| OpSelectionMerge %29 None |
| OpBranchConditional %27 %28 %29 |
| %28 = OpLabel |
| OpBranch %30 |
| %30 = OpLabel |
| OpLoopMerge %32 %33 None |
| OpBranch %34 |
| %34 = OpLabel |
| OpBranchConditional %35 %31 %32 |
| %31 = OpLabel |
| %40 = OpLoad %13 %15 |
| %41 = OpAccessChain %14 %39 %40 |
| %42 = OpLoad %13 %41 |
| OpStore %36 %42 |
| %43 = OpLoad %13 %36 |
| OpStore %15 %43 |
| OpBranch %33 |
| %33 = OpLabel |
| OpBranch %30 |
| %32 = OpLabel |
| OpBranch %29 |
| %29 = OpLabel |
| OpReturn |
| 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 |