1#!amber 2 3# Copyright 2022 Google LLC 4# 5# Licensed under the Apache License, Version 2.0 (the "License"); 6# you may not use this file except in compliance with the License. 7# You may obtain a copy of the License at 8# 9# http://www.apache.org/licenses/LICENSE-2.0 10# 11# Unless required by applicable law or agreed to in writing, software 12# distributed under the License is distributed on an "AS IS" BASIS, 13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14# See the License for the specific language governing permissions and 15# limitations under the License. 16 17 18# A test for a coverage-gap found by the GraphicsFuzz project. 19 20# Short description: A fragment shader that covers specific LLVM code paths 21 22# The test passes because the shader always writes red. 23 24SHADER vertex variant_vertex_shader PASSTHROUGH 25 26# variant_fragment_shader is derived from the following GLSL: 27# #version 320 es 28# #define _int_0 _GLF_uniform_int_values[0] 29# #define _float_0_0 _GLF_uniform_float_values[0] 30# 31# precision highp float; 32# precision highp int; 33# 34# // Contents of _GLF_uniform_int_values: 0 35# layout(set = 0, binding = 0) uniform buf0 36# { 37# int _GLF_uniform_int_values[1]; 38# }; 39# 40# // Contents of _GLF_uniform_float_values: 0.0 41# layout(set = 0, binding = 1) uniform buf1 42# { 43# float _GLF_uniform_float_values[1]; 44# }; 45# 46# layout(location = 0) out vec4 _GLF_color; 47# 48# void main() 49# { 50# _GLF_color = vec4(_int_0); 51# 52# // Always false. 53# if(gl_FragCoord.x < _float_0_0) 54# { 55# } 56# else 57# { 58# // Always false. 59# if(gl_FragCoord.y < 0.0) 60# { 61# } 62# else 63# { 64# // Always true. 65# if(gl_FragCoord.x >= 0.0) 66# { 67# // Iterated once. 68# do 69# { 70# _GLF_color = vec4(1, _int_0, _int_0, 1); 71# } 72# while(gl_FragCoord.y < 0.0); 73# } 74# } 75# } 76# } 77SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 78; SPIR-V 79; Version: 1.0 80; Generator: Khronos Glslang Reference Front End; 10 81; Bound: 68 82; Schema: 0 83 OpCapability Shader 84 %1 = OpExtInstImport "GLSL.std.450" 85 OpMemoryModel Logical GLSL450 86 OpEntryPoint Fragment %4 "main" %9 %24 87 OpExecutionMode %4 OriginUpperLeft 88 OpSource ESSL 320 89 OpName %4 "main" 90 OpName %9 "_GLF_color" 91 OpName %14 "buf0" 92 OpMemberName %14 0 "_GLF_uniform_int_values" 93 OpName %16 "" 94 OpName %24 "gl_FragCoord" 95 OpName %30 "buf1" 96 OpMemberName %30 0 "_GLF_uniform_float_values" 97 OpName %32 "" 98 OpDecorate %9 Location 0 99 OpDecorate %13 ArrayStride 16 100 OpMemberDecorate %14 0 Offset 0 101 OpDecorate %14 Block 102 OpDecorate %16 DescriptorSet 0 103 OpDecorate %16 Binding 0 104 OpDecorate %24 BuiltIn FragCoord 105 OpDecorate %29 ArrayStride 16 106 OpMemberDecorate %30 0 Offset 0 107 OpDecorate %30 Block 108 OpDecorate %32 DescriptorSet 0 109 OpDecorate %32 Binding 1 110 %2 = OpTypeVoid 111 %3 = OpTypeFunction %2 112 %6 = OpTypeFloat 32 113 %7 = OpTypeVector %6 4 114 %8 = OpTypePointer Output %7 115 %9 = OpVariable %8 Output 116 %10 = OpTypeInt 32 1 117 %11 = OpTypeInt 32 0 118 %12 = OpConstant %11 1 119 %13 = OpTypeArray %10 %12 120 %14 = OpTypeStruct %13 121 %15 = OpTypePointer Uniform %14 122 %16 = OpVariable %15 Uniform 123 %17 = OpConstant %10 0 124 %18 = OpTypePointer Uniform %10 125 %23 = OpTypePointer Input %7 126 %24 = OpVariable %23 Input 127 %25 = OpConstant %11 0 128 %26 = OpTypePointer Input %6 129 %29 = OpTypeArray %6 %12 130 %30 = OpTypeStruct %29 131 %31 = OpTypePointer Uniform %30 132 %32 = OpVariable %31 Uniform 133 %33 = OpTypePointer Uniform %6 134 %36 = OpTypeBool 135 %43 = OpConstant %6 0 136 %57 = OpConstant %6 1 137 %4 = OpFunction %2 None %3 138 %5 = OpLabel 139 %19 = OpAccessChain %18 %16 %17 %17 140 %20 = OpLoad %10 %19 141 %21 = OpConvertSToF %6 %20 142 %22 = OpCompositeConstruct %7 %21 %21 %21 %21 143 OpStore %9 %22 144 %27 = OpAccessChain %26 %24 %25 145 %28 = OpLoad %6 %27 146 %34 = OpAccessChain %33 %32 %17 %17 147 %35 = OpLoad %6 %34 148 %37 = OpFOrdLessThan %36 %28 %35 149 OpSelectionMerge %39 None 150 OpBranchConditional %37 %38 %40 151 %38 = OpLabel 152 OpBranch %39 153 %40 = OpLabel 154 %41 = OpAccessChain %26 %24 %12 155 %42 = OpLoad %6 %41 156 %44 = OpFOrdLessThan %36 %42 %43 157 OpSelectionMerge %46 None 158 OpBranchConditional %44 %45 %47 159 %45 = OpLabel 160 OpBranch %46 161 %47 = OpLabel 162 %48 = OpAccessChain %26 %24 %25 163 %49 = OpLoad %6 %48 164 %50 = OpFOrdGreaterThanEqual %36 %49 %43 165 OpSelectionMerge %52 None 166 OpBranchConditional %50 %51 %52 167 %51 = OpLabel 168 OpBranch %53 169 %53 = OpLabel 170 OpLoopMerge %55 %56 None 171 OpBranch %54 172 %54 = OpLabel 173 %58 = OpAccessChain %18 %16 %17 %17 174 %59 = OpLoad %10 %58 175 %60 = OpConvertSToF %6 %59 176 %61 = OpAccessChain %18 %16 %17 %17 177 %62 = OpLoad %10 %61 178 %63 = OpConvertSToF %6 %62 179 %64 = OpCompositeConstruct %7 %57 %60 %63 %57 180 OpStore %9 %64 181 OpBranch %56 182 %56 = OpLabel 183 %65 = OpAccessChain %26 %24 %12 184 %66 = OpLoad %6 %65 185 %67 = OpFOrdLessThan %36 %66 %43 186 OpBranchConditional %67 %53 %55 187 %55 = OpLabel 188 OpBranch %52 189 %52 = OpLabel 190 OpBranch %46 191 %46 = OpLabel 192 OpBranch %39 193 %39 = OpLabel 194 OpReturn 195 OpFunctionEnd 196END 197 198# uniforms for variant 199 200# _GLF_uniform_float_values 201BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA 202 0.0 203END 204# _GLF_uniform_int_values 205BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 206 0 207END 208 209BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 210 211PIPELINE graphics variant_pipeline 212 ATTACH variant_vertex_shader 213 ATTACH variant_fragment_shader 214 FRAMEBUFFER_SIZE 32 32 215 BIND BUFFER variant_framebuffer AS color LOCATION 0 216 BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1 217 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0 218END 219CLEAR_COLOR variant_pipeline 0 0 0 255 220 221CLEAR variant_pipeline 222RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 32 32 223 224EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255 225