#!amber # Copyright 2022 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 coverage-gap found by the GraphicsFuzz project. # Short description: A fragment shader that covers specific LLVM code paths # The test passes because the shader always writes red. # Optimized using spirv-opt with the following arguments: # '-O' # spirv-opt commit hash: a0370efd589be33d5d9a85cfde2f85841b3755af SHADER vertex variant_vertex_shader PASSTHROUGH # variant_fragment_shader is derived from the following GLSL: # #version 320 es # # #define _int_8 _GLF_uniform_int_values[0] # #define _int_2 _GLF_uniform_int_values[1] # #define _int_0 _GLF_uniform_int_values[2] # #define _int_1 _GLF_uniform_int_values[3] # #define _int_3 _GLF_uniform_int_values[4] # #define _float_0_0 _GLF_uniform_float_values[0] # #define _float_2_0 _GLF_uniform_float_values[1] # # precision highp float; # precision highp int; # # // Contents of _GLF_uniform_int_values: [8, 2, 0, 1, 3] # layout(set = 0, binding = 0) uniform buf0 # { # int _GLF_uniform_int_values[5]; # }; # # // Contents of _GLF_uniform_float_values: [0.0, 2.0] # layout(set = 0, binding = 1) uniform buf1 # { # float _GLF_uniform_float_values[2]; # }; # # // Contents of injectionSwitch: [0.0, 1.0] # layout(set = 0, binding = 2) uniform buf2 # { # highp vec2 injectionSwitch; # }; # # layout(location = 0) out vec4 _GLF_color; # # // Returns true if v.y >= 2.0. # bool func0(vec4 v) # { # // Always false. # while(injectionSwitch.x < _float_0_0) # { # return false; # } # # if(v.y < _float_2_0) # { # return false; # } # # return true; # } # # // Returns 2. # int func1() # { # int a = _int_0; # # // Iterates seven times. # for(int i = _int_1; i < _int_8; i++) # { # if(func0(vec4[8](vec4(_int_1), vec4(_int_1), vec4(_int_3), vec4(_int_1), vec4(_int_1), vec4(_int_1), vec4(_int_1), vec4(_int_1))[i])) # { # a = i; # } # } # # return a; # } # # void main() # { # // Always true. # if(func1() == _int_2) # { # _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1); # } # else # { # _GLF_color = vec4(_int_0); # } # } SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 ; SPIR-V ; Version: 1.0 ; Generator: Khronos Glslang Reference Front End; 10 ; Bound: 275 ; Schema: 0 OpCapability Shader %1 = OpExtInstImport "GLSL.std.450" OpMemoryModel Logical GLSL450 OpEntryPoint Fragment %4 "main" %139 OpExecutionMode %4 OriginUpperLeft OpSource ESSL 320 OpName %4 "main" OpName %24 "buf2" OpMemberName %24 0 "injectionSwitch" OpName %26 "" OpName %35 "buf1" OpMemberName %35 0 "_GLF_uniform_float_values" OpName %37 "" OpName %61 "buf0" OpMemberName %61 0 "_GLF_uniform_int_values" OpName %63 "" OpName %139 "_GLF_color" OpMemberDecorate %24 0 Offset 0 OpDecorate %24 Block OpDecorate %26 DescriptorSet 0 OpDecorate %26 Binding 2 OpDecorate %34 ArrayStride 16 OpMemberDecorate %35 0 Offset 0 OpDecorate %35 Block OpDecorate %37 DescriptorSet 0 OpDecorate %37 Binding 1 OpDecorate %60 ArrayStride 16 OpMemberDecorate %61 0 Offset 0 OpDecorate %61 Block OpDecorate %63 DescriptorSet 0 OpDecorate %63 Binding 0 OpDecorate %139 Location 0 %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeFloat 32 %7 = OpTypeVector %6 4 %8 = OpTypePointer Function %7 %9 = OpTypeBool %14 = OpTypeInt 32 1 %23 = OpTypeVector %6 2 %24 = OpTypeStruct %23 %25 = OpTypePointer Uniform %24 %26 = OpVariable %25 Uniform %27 = OpConstant %14 0 %28 = OpTypeInt 32 0 %29 = OpConstant %28 0 %30 = OpTypePointer Uniform %6 %33 = OpConstant %28 2 %34 = OpTypeArray %6 %33 %35 = OpTypeStruct %34 %36 = OpTypePointer Uniform %35 %37 = OpVariable %36 Uniform %41 = OpConstantFalse %9 %47 = OpConstant %14 1 %54 = OpConstantTrue %9 %59 = OpConstant %28 5 %60 = OpTypeArray %14 %59 %61 = OpTypeStruct %60 %62 = OpTypePointer Uniform %61 %63 = OpVariable %62 Uniform %64 = OpConstant %14 2 %65 = OpTypePointer Uniform %14 %69 = OpConstant %14 3 %89 = OpConstant %14 4 %114 = OpConstant %28 8 %115 = OpTypeArray %7 %114 %119 = OpTypePointer Function %115 %138 = OpTypePointer Output %7 %139 = OpVariable %138 Output %263 = OpUndef %9 %4 = OpFunction %2 None %3 %5 = OpLabel %169 = OpVariable %119 Function %172 = OpAccessChain %65 %63 %27 %64 %173 = OpLoad %14 %172 %174 = OpAccessChain %65 %63 %27 %69 %175 = OpLoad %14 %174 OpBranch %176 %176 = OpLabel %262 = OpPhi %9 %263 %5 %259 %223 %256 = OpPhi %14 %173 %5 %274 %223 %255 = OpPhi %14 %175 %5 %225 %223 %179 = OpAccessChain %65 %63 %27 %27 %180 = OpLoad %14 %179 %181 = OpSLessThan %9 %255 %180 OpLoopMerge %226 %223 None OpBranchConditional %181 %182 %226 %182 = OpLabel %185 = OpConvertSToF %6 %175 %186 = OpCompositeConstruct %7 %185 %185 %185 %185 %191 = OpAccessChain %65 %63 %27 %89 %192 = OpLoad %14 %191 %193 = OpConvertSToF %6 %192 %194 = OpCompositeConstruct %7 %193 %193 %193 %193 %215 = OpCompositeConstruct %115 %186 %186 %194 %186 %186 %186 %186 %186 OpStore %169 %215 %217 = OpAccessChain %8 %169 %255 %218 = OpLoad %7 %217 OpSelectionMerge %252 None OpSwitch %29 %232 %232 = OpLabel OpBranch %233 %233 = OpLabel %235 = OpAccessChain %30 %26 %27 %29 %236 = OpLoad %6 %235 %237 = OpAccessChain %30 %37 %27 %27 %238 = OpLoad %6 %237 %239 = OpFOrdLessThan %9 %236 %238 OpLoopMerge %242 %241 None OpBranchConditional %239 %240 %242 %240 = OpLabel OpBranch %242 %241 = OpLabel OpBranch %233 %242 = OpLabel %260 = OpPhi %9 %262 %233 %41 %240 %257 = OpPhi %9 %41 %233 %54 %240 OpSelectionMerge %244 None OpBranchConditional %257 %252 %244 %244 = OpLabel %246 = OpCompositeExtract %6 %218 1 %247 = OpAccessChain %30 %37 %27 %47 %248 = OpLoad %6 %247 %249 = OpFOrdLessThan %9 %246 %248 OpSelectionMerge %251 None OpBranchConditional %249 %250 %251 %250 = OpLabel OpBranch %252 %251 = OpLabel OpBranch %252 %252 = OpLabel %259 = OpPhi %9 %260 %242 %41 %250 %54 %251 %274 = OpSelect %14 %259 %255 %256 OpBranch %223 %223 = OpLabel %225 = OpIAdd %14 %255 %47 OpBranch %176 %226 = OpLabel %133 = OpAccessChain %65 %63 %27 %47 %134 = OpLoad %14 %133 %135 = OpIEqual %9 %256 %134 OpSelectionMerge %137 None OpBranchConditional %135 %136 %153 %153 = OpLabel %156 = OpConvertSToF %6 %173 %157 = OpCompositeConstruct %7 %156 %156 %156 %156 OpStore %139 %157 OpBranch %137 %136 = OpLabel %142 = OpConvertSToF %6 %175 %145 = OpConvertSToF %6 %173 %152 = OpCompositeConstruct %7 %142 %145 %145 %142 OpStore %139 %152 OpBranch %137 %137 = OpLabel OpReturn OpFunctionEnd END # uniforms for variant # injectionSwitch BUFFER variant_injectionSwitch DATA_TYPE vec2 STD140 DATA 0.0 1.0 END # _GLF_uniform_float_values BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA 0.0 2.0 END # _GLF_uniform_int_values BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 8 2 0 1 3 END BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM PIPELINE graphics variant_pipeline ATTACH variant_vertex_shader ATTACH variant_fragment_shader FRAMEBUFFER_SIZE 32 32 BIND BUFFER variant_framebuffer AS color LOCATION 0 BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 2 BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1 BIND BUFFER variant__GLF_uniform_int_values 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 32 32 EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255