| #!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 a switch inside while always return |
| |
| # The test passes because main 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 |
| # { |
| # float zero; |
| # }; |
| # |
| # int merge() |
| # { |
| # if (zero < 0.0) |
| # { |
| # return 0; |
| # } |
| # } |
| # |
| # void main() |
| # { |
| # _GLF_color = vec4(1, 0, 0, 1); |
| # do |
| # { |
| # switch (int(zero)) |
| # { |
| # case 0: |
| # return; // We always end up here |
| # } |
| # } while (false); |
| # |
| # int res = merge(); |
| # _GLF_color = vec4(int(res)); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 48 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %27 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "merge(" |
| OpName %11 "buf0" |
| OpMemberName %11 0 "zero" |
| OpName %13 "" |
| OpName %27 "_GLF_color" |
| OpName %43 "res" |
| OpDecorate %8 RelaxedPrecision |
| OpMemberDecorate %11 0 Offset 0 |
| OpDecorate %11 Block |
| OpDecorate %13 DescriptorSet 0 |
| OpDecorate %13 Binding 0 |
| OpDecorate %27 Location 0 |
| OpDecorate %43 RelaxedPrecision |
| OpDecorate %44 RelaxedPrecision |
| OpDecorate %45 RelaxedPrecision |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypeFunction %6 |
| %10 = OpTypeFloat 32 |
| %11 = OpTypeStruct %10 |
| %12 = OpTypePointer Uniform %11 |
| %13 = OpVariable %12 Uniform |
| %14 = OpConstant %6 0 |
| %15 = OpTypePointer Uniform %10 |
| %18 = OpConstant %10 0 |
| %19 = OpTypeBool |
| %25 = OpTypeVector %10 4 |
| %26 = OpTypePointer Output %25 |
| %27 = OpVariable %26 Output |
| %28 = OpConstant %10 1 |
| %29 = OpConstantComposite %25 %28 %18 %18 %28 |
| %41 = OpConstantFalse %19 |
| %42 = OpTypePointer Function %6 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %43 = OpVariable %42 Function |
| OpStore %27 %29 |
| OpBranch %30 |
| %30 = OpLabel |
| OpLoopMerge %32 %33 None |
| OpBranch %31 |
| %31 = OpLabel |
| %34 = OpAccessChain %15 %13 %14 |
| %35 = OpLoad %10 %34 |
| %36 = OpConvertFToS %6 %35 |
| OpSelectionMerge %38 None |
| OpSwitch %36 %38 0 %37 |
| %37 = OpLabel |
| OpReturn |
| %38 = OpLabel |
| OpBranch %33 |
| %33 = OpLabel |
| OpBranchConditional %41 %30 %32 |
| %32 = OpLabel |
| %44 = OpFunctionCall %6 %8 |
| OpStore %43 %44 |
| %45 = OpLoad %6 %43 |
| %46 = OpConvertSToF %10 %45 |
| %47 = OpCompositeConstruct %25 %46 %46 %46 %46 |
| OpStore %27 %47 |
| OpReturn |
| OpFunctionEnd |
| %8 = OpFunction %6 None %7 |
| %9 = OpLabel |
| %16 = OpAccessChain %15 %13 %14 |
| %17 = OpLoad %10 %16 |
| %20 = OpFOrdLessThan %19 %17 %18 |
| OpSelectionMerge %22 None |
| OpBranchConditional %20 %21 %22 |
| %21 = OpLabel |
| OpReturnValue %14 |
| %22 = OpLabel |
| %24 = OpUndef %6 |
| OpReturnValue %24 |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # zero |
| BUFFER variant_zero DATA_TYPE float DATA |
| 0.0 |
| 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_zero 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 |