| #!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 unreachable continue statement |
| |
| # The test passes because the shader always writes the color red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--eliminate-local-single-store' |
| # '--simplify-instructions' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--combine-access-chains' |
| # '--vector-dce' |
| # '--eliminate-dead-branches' |
| # spirv-opt commit hash: 06407250a169c6a03b3765e86619075af1a8c187 |
| |
| |
| |
| 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; |
| # }; |
| # vec3 computeColor() |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # |
| # for ( |
| # int _injected_loop_counter = 1; |
| # true; |
| # 1) |
| # { |
| # if (injectionSwitch.x > 1.0) // Always false |
| # { |
| # if (injectionSwitch.x > 1.0) |
| # { |
| # } |
| # continue; |
| # } |
| # return vec3(1.0); |
| # } |
| # return vec3(1.0); |
| # } |
| # void main() |
| # { |
| # computeColor(); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 53 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %13 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "computeColor(" |
| OpName %13 "_GLF_color" |
| OpName %19 "_injected_loop_counter" |
| OpName %29 "buf0" |
| OpMemberName %29 0 "injectionSwitch" |
| OpName %31 "" |
| OpDecorate %13 Location 0 |
| OpDecorate %19 RelaxedPrecision |
| OpMemberDecorate %29 0 Offset 0 |
| OpDecorate %29 Block |
| OpDecorate %31 DescriptorSet 0 |
| OpDecorate %31 Binding 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 3 |
| %8 = OpTypeFunction %7 |
| %11 = OpTypeVector %6 4 |
| %12 = OpTypePointer Output %11 |
| %13 = OpVariable %12 Output |
| %14 = OpConstant %6 1 |
| %15 = OpConstant %6 0 |
| %16 = OpConstantComposite %11 %14 %15 %15 %14 |
| %17 = OpTypeInt 32 1 |
| %18 = OpTypePointer Function %17 |
| %20 = OpConstant %17 1 |
| %26 = OpTypeBool |
| %27 = OpConstantTrue %26 |
| %28 = OpTypeVector %6 2 |
| %29 = OpTypeStruct %28 |
| %30 = OpTypePointer Uniform %29 |
| %31 = OpVariable %30 Uniform |
| %32 = OpConstant %17 0 |
| %33 = OpTypeInt 32 0 |
| %34 = OpConstant %33 0 |
| %35 = OpTypePointer Uniform %6 |
| %47 = OpConstantComposite %7 %14 %14 %14 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %51 = OpFunctionCall %7 %9 |
| OpReturn |
| OpFunctionEnd |
| %9 = OpFunction %7 None %8 |
| %10 = OpLabel |
| %19 = OpVariable %18 Function |
| OpStore %13 %16 |
| OpStore %19 %20 |
| OpBranch %21 |
| %21 = OpLabel |
| OpLoopMerge %23 %45 None |
| OpBranch %22 |
| %22 = OpLabel |
| %36 = OpAccessChain %35 %31 %32 %34 |
| %37 = OpLoad %6 %36 |
| %38 = OpFOrdGreaterThan %26 %37 %14 |
| OpSelectionMerge %40 None |
| OpBranchConditional %38 %39 %40 |
| %39 = OpLabel |
| %41 = OpAccessChain %35 %31 %32 %34 |
| %42 = OpLoad %6 %41 |
| %43 = OpFOrdGreaterThan %26 %42 %14 |
| OpSelectionMerge %52 None |
| OpBranchConditional %43 %44 %45 |
| %44 = OpLabel |
| OpBranch %45 |
| %52 = OpLabel |
| OpBranch %45 |
| %45 = OpLabel |
| OpBranch %21 |
| %40 = OpLabel |
| OpReturnValue %47 |
| %23 = OpLabel |
| OpUnreachable |
| 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 |