| #!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 uniform value as a return |
| |
| # The test passes because shader always writes color red |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 310 es |
| # precision highp float; |
| # |
| # precision highp int; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # vec2 injectionSwitch; |
| # }; |
| # |
| # float fx(){ |
| # if (gl_FragCoord.y >= 0.0) |
| # return injectionSwitch.y; |
| # |
| # while(true){ |
| # _GLF_color = vec4(1.0, 1.0, 1.0, 1.0); |
| # }; |
| # } |
| # |
| # void main() |
| # { |
| # float x2 = 1.0; |
| # float B = 1.0; |
| # |
| # _GLF_color = vec4(fx(), 0.0, 0.0, 1.0); |
| # |
| # while (x2 > 2.0){ |
| # float k0; |
| # k0 = fx() - fx(); |
| # B = k0; |
| # x2 = B; |
| # } |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 63 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %12 %40 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "fx(" |
| OpName %12 "gl_FragCoord" |
| OpName %24 "buf0" |
| OpMemberName %24 0 "injectionSwitch" |
| OpName %26 "" |
| OpName %40 "_GLF_color" |
| OpName %45 "x2" |
| OpName %46 "B" |
| OpName %57 "k0" |
| OpDecorate %12 BuiltIn FragCoord |
| OpMemberDecorate %24 0 Offset 0 |
| OpDecorate %24 Block |
| OpDecorate %26 DescriptorSet 0 |
| OpDecorate %26 Binding 0 |
| OpDecorate %40 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeFunction %6 |
| %10 = OpTypeVector %6 4 |
| %11 = OpTypePointer Input %10 |
| %12 = OpVariable %11 Input |
| %13 = OpTypeInt 32 0 |
| %14 = OpConstant %13 1 |
| %15 = OpTypePointer Input %6 |
| %18 = OpConstant %6 0 |
| %19 = OpTypeBool |
| %23 = OpTypeVector %6 2 |
| %24 = OpTypeStruct %23 |
| %25 = OpTypePointer Uniform %24 |
| %26 = OpVariable %25 Uniform |
| %27 = OpTypeInt 32 1 |
| %28 = OpConstant %27 0 |
| %29 = OpTypePointer Uniform %6 |
| %38 = OpConstantTrue %19 |
| %39 = OpTypePointer Output %10 |
| %40 = OpVariable %39 Output |
| %41 = OpConstant %6 1 |
| %42 = OpConstantComposite %10 %41 %41 %41 %41 |
| %44 = OpTypePointer Function %6 |
| %55 = OpConstant %6 2 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %45 = OpVariable %44 Function |
| %46 = OpVariable %44 Function |
| %57 = OpVariable %44 Function |
| OpStore %45 %41 |
| OpStore %46 %41 |
| %47 = OpFunctionCall %6 %8 |
| %48 = OpCompositeConstruct %10 %47 %18 %18 %41 |
| OpStore %40 %48 |
| OpBranch %49 |
| %49 = OpLabel |
| OpLoopMerge %51 %52 None |
| OpBranch %53 |
| %53 = OpLabel |
| %54 = OpLoad %6 %45 |
| %56 = OpFOrdGreaterThan %19 %54 %55 |
| OpBranchConditional %56 %50 %51 |
| %50 = OpLabel |
| %58 = OpFunctionCall %6 %8 |
| %59 = OpFunctionCall %6 %8 |
| %60 = OpFSub %6 %58 %59 |
| OpStore %57 %60 |
| %61 = OpLoad %6 %57 |
| OpStore %46 %61 |
| %62 = OpLoad %6 %46 |
| OpStore %45 %62 |
| OpBranch %52 |
| %52 = OpLabel |
| OpBranch %49 |
| %51 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %8 = OpFunction %6 None %7 |
| %9 = OpLabel |
| %16 = OpAccessChain %15 %12 %14 |
| %17 = OpLoad %6 %16 |
| %20 = OpFOrdGreaterThanEqual %19 %17 %18 |
| OpSelectionMerge %22 None |
| OpBranchConditional %20 %21 %22 |
| %21 = OpLabel |
| %30 = OpAccessChain %29 %26 %28 %14 |
| %31 = OpLoad %6 %30 |
| OpReturnValue %31 |
| %22 = OpLabel |
| OpBranch %33 |
| %33 = OpLabel |
| OpLoopMerge %35 %36 None |
| OpBranch %37 |
| %37 = OpLabel |
| OpBranchConditional %38 %34 %35 |
| %34 = OpLabel |
| OpStore %40 %42 |
| OpBranch %36 |
| %36 = OpLabel |
| OpBranch %33 |
| %35 = OpLabel |
| %43 = OpUndef %6 |
| OpReturnValue %43 |
| 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 |