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# 29# #define _int_2 _GLF_uniform_int_values[0] 30# #define _int_0 _GLF_uniform_int_values[1] 31# #define _float_1_0 _GLF_uniform_float_values[0] 32# 33# precision highp float; 34# precision highp int; 35# 36# // Contents of _GLF_uniform_int_values: [2, 0] 37# layout(set = 0, binding = 0) uniform buf0 38# { 39# int _GLF_uniform_int_values[2]; 40# }; 41# 42# // Contents of _GLF_uniform_float_values: 1.0 43# layout(set = 0, binding = 1) uniform buf1 44# { 45# float _GLF_uniform_float_values[1]; 46# }; 47# 48# layout(location = 0) out vec4 _GLF_color; 49# 50# void main() 51# { 52# vec4 v = vec4(_float_1_0); 53# 54# // Decreases v.yz by one. 55# for(int i = _int_2; i > _int_0; i--) 56# { 57# v[i] -= _float_1_0; 58# } 59# 60# // Assigns the same value multiple times. 61# for(int i = 2; i > 0; i--) 62# { 63# for(int j = 2; j != 0; j--) 64# { 65# _GLF_color = v; 66# } 67# } 68# } 69SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 70; SPIR-V 71; Version: 1.0 72; Generator: Khronos Glslang Reference Front End; 10 73; Bound: 77 74; Schema: 0 75 OpCapability Shader 76 %1 = OpExtInstImport "GLSL.std.450" 77 OpMemoryModel Logical GLSL450 78 OpEntryPoint Fragment %4 "main" %71 79 OpExecutionMode %4 OriginUpperLeft 80 OpSource ESSL 320 81 OpName %4 "main" 82 OpName %9 "v" 83 OpName %13 "buf1" 84 OpMemberName %13 0 "_GLF_uniform_float_values" 85 OpName %15 "" 86 OpName %23 "i" 87 OpName %26 "buf0" 88 OpMemberName %26 0 "_GLF_uniform_int_values" 89 OpName %28 "" 90 OpName %53 "i" 91 OpName %62 "j" 92 OpName %71 "_GLF_color" 93 OpDecorate %12 ArrayStride 16 94 OpMemberDecorate %13 0 Offset 0 95 OpDecorate %13 Block 96 OpDecorate %15 DescriptorSet 0 97 OpDecorate %15 Binding 1 98 OpDecorate %25 ArrayStride 16 99 OpMemberDecorate %26 0 Offset 0 100 OpDecorate %26 Block 101 OpDecorate %28 DescriptorSet 0 102 OpDecorate %28 Binding 0 103 OpDecorate %71 Location 0 104 %2 = OpTypeVoid 105 %3 = OpTypeFunction %2 106 %6 = OpTypeFloat 32 107 %7 = OpTypeVector %6 4 108 %8 = OpTypePointer Function %7 109 %10 = OpTypeInt 32 0 110 %11 = OpConstant %10 1 111 %12 = OpTypeArray %6 %11 112 %13 = OpTypeStruct %12 113 %14 = OpTypePointer Uniform %13 114 %15 = OpVariable %14 Uniform 115 %16 = OpTypeInt 32 1 116 %17 = OpConstant %16 0 117 %18 = OpTypePointer Uniform %6 118 %22 = OpTypePointer Function %16 119 %24 = OpConstant %10 2 120 %25 = OpTypeArray %16 %24 121 %26 = OpTypeStruct %25 122 %27 = OpTypePointer Uniform %26 123 %28 = OpVariable %27 Uniform 124 %29 = OpTypePointer Uniform %16 125 %38 = OpConstant %16 1 126 %41 = OpTypeBool 127 %46 = OpTypePointer Function %6 128 %54 = OpConstant %16 2 129 %70 = OpTypePointer Output %7 130 %71 = OpVariable %70 Output 131 %4 = OpFunction %2 None %3 132 %5 = OpLabel 133 %9 = OpVariable %8 Function 134 %23 = OpVariable %22 Function 135 %53 = OpVariable %22 Function 136 %62 = OpVariable %22 Function 137 %19 = OpAccessChain %18 %15 %17 %17 138 %20 = OpLoad %6 %19 139 %21 = OpCompositeConstruct %7 %20 %20 %20 %20 140 OpStore %9 %21 141 %30 = OpAccessChain %29 %28 %17 %17 142 %31 = OpLoad %16 %30 143 OpStore %23 %31 144 OpBranch %32 145 %32 = OpLabel 146 OpLoopMerge %34 %35 None 147 OpBranch %36 148 %36 = OpLabel 149 %37 = OpLoad %16 %23 150 %39 = OpAccessChain %29 %28 %17 %38 151 %40 = OpLoad %16 %39 152 %42 = OpSGreaterThan %41 %37 %40 153 OpBranchConditional %42 %33 %34 154 %33 = OpLabel 155 %43 = OpLoad %16 %23 156 %44 = OpAccessChain %18 %15 %17 %17 157 %45 = OpLoad %6 %44 158 %47 = OpAccessChain %46 %9 %43 159 %48 = OpLoad %6 %47 160 %49 = OpFSub %6 %48 %45 161 %50 = OpAccessChain %46 %9 %43 162 OpStore %50 %49 163 OpBranch %35 164 %35 = OpLabel 165 %51 = OpLoad %16 %23 166 %52 = OpISub %16 %51 %38 167 OpStore %23 %52 168 OpBranch %32 169 %34 = OpLabel 170 OpStore %53 %54 171 OpBranch %55 172 %55 = OpLabel 173 OpLoopMerge %57 %58 None 174 OpBranch %59 175 %59 = OpLabel 176 %60 = OpLoad %16 %53 177 %61 = OpSGreaterThan %41 %60 %17 178 OpBranchConditional %61 %56 %57 179 %56 = OpLabel 180 OpStore %62 %54 181 OpBranch %63 182 %63 = OpLabel 183 OpLoopMerge %65 %66 None 184 OpBranch %67 185 %67 = OpLabel 186 %68 = OpLoad %16 %62 187 %69 = OpINotEqual %41 %68 %17 188 OpBranchConditional %69 %64 %65 189 %64 = OpLabel 190 %72 = OpLoad %7 %9 191 OpStore %71 %72 192 OpBranch %66 193 %66 = OpLabel 194 %73 = OpLoad %16 %62 195 %74 = OpISub %16 %73 %38 196 OpStore %62 %74 197 OpBranch %63 198 %65 = OpLabel 199 OpBranch %58 200 %58 = OpLabel 201 %75 = OpLoad %16 %53 202 %76 = OpISub %16 %75 %38 203 OpStore %53 %76 204 OpBranch %55 205 %57 = OpLabel 206 OpReturn 207 OpFunctionEnd 208END 209 210# uniforms for variant 211 212# _GLF_uniform_float_values 213BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA 214 1.0 215END 216# _GLF_uniform_int_values 217BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 218 2 0 219END 220 221BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 222 223PIPELINE graphics variant_pipeline 224 ATTACH variant_vertex_shader 225 ATTACH variant_fragment_shader 226 FRAMEBUFFER_SIZE 32 32 227 BIND BUFFER variant_framebuffer AS color LOCATION 0 228 BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1 229 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0 230END 231CLEAR_COLOR variant_pipeline 0 0 0 255 232 233CLEAR variant_pipeline 234RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 32 32 235 236EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255 237