| # 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 return in nest of ifs, inside loop |
| |
| # The test passes because the fragment shader writes a red pixel, and then |
| # terminates without further output manipulation (the other write of red |
| # is not dynamically reachable) |
| |
| # Derived from the following GLSL. |
| |
| # Fragment shader GLSL: |
| # #version 310 es |
| # |
| # precision highp float; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # layout(set = 0, binding = 0) uniform buf0 { |
| # vec2 injectionSwitch; |
| # }; |
| # |
| # void main() |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # for( |
| # int i = 0; |
| # i < 10; |
| # i ++ |
| # ) |
| # { |
| # _GLF_color = vec4(1.0); |
| # if(1.0 > injectionSwitch.y) |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # if(true) |
| # { |
| # return; |
| # } |
| # } |
| # } |
| # } |
| |
| [require] |
| fbsize 256 256 |
| |
| [vertex shader passthrough] |
| |
| [fragment shader spirv] |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 46 |
| ; 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 "i" |
| OpName %28 "buf0" |
| OpMemberName %28 0 "injectionSwitch" |
| OpName %30 "" |
| OpDecorate %9 Location 0 |
| OpDecorate %15 RelaxedPrecision |
| OpDecorate %22 RelaxedPrecision |
| OpMemberDecorate %28 0 Offset 0 |
| OpDecorate %28 Block |
| OpDecorate %30 DescriptorSet 0 |
| OpDecorate %30 Binding 0 |
| OpDecorate %43 RelaxedPrecision |
| OpDecorate %45 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 |
| %23 = OpConstant %13 10 |
| %24 = OpTypeBool |
| %26 = OpConstantComposite %7 %10 %10 %10 %10 |
| %27 = OpTypeVector %6 2 |
| %28 = OpTypeStruct %27 |
| %29 = OpTypePointer Uniform %28 |
| %30 = OpVariable %29 Uniform |
| %31 = OpTypeInt 32 0 |
| %32 = OpConstant %31 1 |
| %33 = OpTypePointer Uniform %6 |
| %39 = OpConstantTrue %24 |
| %44 = OpConstant %13 1 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %15 = OpVariable %14 Function |
| OpStore %9 %12 |
| OpStore %15 %16 |
| OpBranch %17 |
| %17 = OpLabel |
| OpLoopMerge %19 %20 None |
| OpBranch %21 |
| %21 = OpLabel |
| %22 = OpLoad %13 %15 |
| %25 = OpSLessThan %24 %22 %23 |
| OpBranchConditional %25 %18 %19 |
| %18 = OpLabel |
| OpStore %9 %26 |
| %34 = OpAccessChain %33 %30 %16 %32 |
| %35 = OpLoad %6 %34 |
| %36 = OpFOrdGreaterThan %24 %10 %35 |
| OpSelectionMerge %38 None |
| OpBranchConditional %36 %37 %38 |
| %37 = OpLabel |
| OpStore %9 %12 |
| OpSelectionMerge %41 None |
| OpBranchConditional %39 %40 %41 |
| %40 = OpLabel |
| OpReturn |
| %41 = OpLabel |
| OpBranch %38 |
| %38 = OpLabel |
| OpBranch %20 |
| %20 = OpLabel |
| %43 = OpLoad %13 %15 |
| %45 = OpIAdd %13 %43 %44 |
| OpStore %15 %45 |
| OpBranch %17 |
| %19 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| |
| |
| [test] |
| ## Uniforms |
| # injectionSwitch |
| uniform ubo 0:0 vec2 0 0.0 1.0 |
| |
| draw rect -1 -1 2 2 |
| probe rgba (0, 0) (1, 1, 1, 1) |