| # Copyright 2018 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. |
| # A fragment shader with somewhat complex control flow and a switch. |
| # Derived from the following GLSL fragment shader. |
| # We check that all pixels are red. The test passes because the final |
| # statement writes red to _GLF_color and there are no discard statments. |
| |
| # #version 310 es |
| # |
| # precision highp float; |
| # precision highp int; |
| # |
| # layout(set = 0, binding = 0) uniform buf0 { |
| # vec2 injectionSwitch; |
| # }; |
| # layout(location=0) out vec4 _GLF_color; |
| # |
| # struct S { |
| # bool ok; |
| # }; |
| # |
| # bool g() |
| # { |
| # for( |
| # int i = 0; |
| # i < 1; |
| # i++ |
| # ) |
| # { |
| # switch(int(injectionSwitch.x)) |
| # { |
| # case 9: |
| # S a = S(bool(injectionSwitch.x)); |
| # S b = a; |
| # case 42: |
| # if(b.ok) |
| # { |
| # return true; |
| # } |
| # default: |
| # break; |
| # } |
| # } |
| # return true; |
| # } |
| # vec3 f() |
| # { |
| # { |
| # S a = S(bool(injectionSwitch.x)); |
| # if(a.ok) |
| # { |
| # return vec3(0.0); |
| # } |
| # if(g()) |
| # { |
| # return vec3(1.0); |
| # } |
| # } |
| # return vec3(1.0); |
| # } |
| # void main() |
| # { |
| # _GLF_color = vec4(f(), 1.0); |
| # // always true at runtime |
| # if (injectionSwitch.x == 0.0) { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # } |
| # } |
| |
| [vertex shader passthrough] |
| |
| [fragment shader spirv] |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 195 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %main "main" %_GLF_color |
| OpExecutionMode %main OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %main "main" |
| OpName %buf0 "buf0" |
| OpMemberName %buf0 0 "injectionSwitch" |
| OpName %_ "" |
| OpName %_GLF_color "_GLF_color" |
| OpMemberDecorate %buf0 0 Offset 0 |
| OpDecorate %buf0 Block |
| OpDecorate %_ DescriptorSet 0 |
| OpDecorate %_ Binding 0 |
| OpDecorate %_GLF_color Location 0 |
| %void = OpTypeVoid |
| %3 = OpTypeFunction %void |
| %bool = OpTypeBool |
| %float = OpTypeFloat 32 |
| %v3float = OpTypeVector %float 3 |
| %int = OpTypeInt 32 1 |
| %int_0 = OpConstant %int 0 |
| %int_1 = OpConstant %int 1 |
| %v2float = OpTypeVector %float 2 |
| %buf0 = OpTypeStruct %v2float |
| %_ptr_Uniform_buf0 = OpTypePointer Uniform %buf0 |
| %_ = OpVariable %_ptr_Uniform_buf0 Uniform |
| %uint = OpTypeInt 32 0 |
| %uint_0 = OpConstant %uint 0 |
| %_ptr_Uniform_float = OpTypePointer Uniform %float |
| %float_0 = OpConstant %float 0 |
| %true = OpConstantTrue %bool |
| %73 = OpConstantComposite %v3float %float_0 %float_0 %float_0 |
| %float_1 = OpConstant %float 1 |
| %79 = OpConstantComposite %v3float %float_1 %float_1 %float_1 |
| %v4float = OpTypeVector %float 4 |
| %_ptr_Output_v4float = OpTypePointer Output %v4float |
| %_GLF_color = OpVariable %_ptr_Output_v4float Output |
| %96 = OpConstantComposite %v4float %float_1 %float_0 %float_0 %float_1 |
| %false = OpConstantFalse %bool |
| %182 = OpUndef %bool |
| %main = OpFunction %void None %3 |
| %5 = OpLabel |
| OpBranch %119 |
| %119 = OpLabel |
| OpLoopMerge %120 %121 None |
| OpBranch %122 |
| %122 = OpLabel |
| %123 = OpAccessChain %_ptr_Uniform_float %_ %int_0 %uint_0 |
| %124 = OpLoad %float %123 |
| %125 = OpFOrdNotEqual %bool %124 %float_0 |
| OpSelectionMerge %129 None |
| OpBranchConditional %125 %130 %129 |
| %130 = OpLabel |
| OpBranch %120 |
| %129 = OpLabel |
| OpBranch %141 |
| %141 = OpLabel |
| OpLoopMerge %142 %143 None |
| OpBranch %145 |
| %145 = OpLabel |
| %179 = OpPhi %bool %182 %141 %194 %156 |
| %177 = OpPhi %int %int_0 %141 %169 %156 |
| %150 = OpSLessThan %bool %177 %int_1 |
| OpLoopMerge %146 %156 None |
| OpBranchConditional %150 %151 %146 |
| %151 = OpLabel |
| %154 = OpConvertFToS %int %124 |
| OpSelectionMerge %156 None |
| OpSwitch %154 %156 9 %157 42 %158 |
| %156 = OpLabel |
| %194 = OpPhi %bool %179 %151 %178 %166 |
| %169 = OpIAdd %int %177 %int_1 |
| OpBranch %145 |
| %157 = OpLabel |
| OpBranch %158 |
| %158 = OpLabel |
| %178 = OpPhi %bool %179 %151 %125 %157 |
| OpSelectionMerge %166 None |
| OpBranchConditional %178 %167 %166 |
| %167 = OpLabel |
| OpBranch %146 |
| %166 = OpLabel |
| OpBranch %156 |
| %146 = OpLabel |
| %187 = OpPhi %bool %182 %145 %true %167 |
| %183 = OpPhi %bool %false %145 %true %167 |
| OpSelectionMerge %171 None |
| OpBranchConditional %183 %142 %171 |
| %171 = OpLabel |
| OpBranch %142 |
| %143 = OpLabel |
| OpBranch %141 |
| %142 = OpLabel |
| %186 = OpPhi %bool %187 %146 %true %171 |
| OpSelectionMerge %132 None |
| OpBranchConditional %186 %133 %132 |
| %133 = OpLabel |
| OpBranch %120 |
| %132 = OpLabel |
| OpBranch %120 |
| %121 = OpLabel |
| OpBranch %119 |
| %120 = OpLabel |
| %193 = OpPhi %v3float %73 %130 %79 %133 %79 %132 |
| %87 = OpCompositeExtract %float %193 0 |
| %88 = OpCompositeExtract %float %193 1 |
| %89 = OpCompositeExtract %float %193 2 |
| %90 = OpCompositeConstruct %v4float %87 %88 %89 %float_1 |
| OpStore %_GLF_color %90 |
| %93 = OpFOrdEqual %bool %124 %float_0 |
| OpSelectionMerge %95 None |
| OpBranchConditional %93 %94 %95 |
| %94 = OpLabel |
| OpStore %_GLF_color %96 |
| OpBranch %95 |
| %95 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| |
| |
| [test] |
| uniform ubo 0:0 vec2 0 0.0 1.0 |
| draw rect -1 -1 2 2 |
| probe all rgba 1 0 0 1 |