1#!amber 2 3# Copyright 2020 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 GraphicsFuzz. 19 20# Short description: A fragment shader that covers a specific DAG combiner code path 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 310 es 28# precision highp float; 29# precision highp int; 30# 31# layout(location = 0) out vec4 _GLF_color; 32# 33# layout(set = 0, binding = 0) uniform buf0 34# { 35# int minusEight; 36# }; 37# layout(set = 0, binding = 1) uniform buf1 38# { 39# int ten; 40# }; 41# 42# void main() 43# { 44# int a = 0; 45# int b = 0; 46# 47# for(int i = 0; i < ten; i++) 48# { 49# // Breaks when i == 3. 50# if(a > 5) 51# break; 52# 53# // Increments a by 2. 54# a += minusEight / -4; 55# b++; 56# } 57# 58# if (b == 3) 59# _GLF_color = vec4(1, 0, 0, 1); 60# else 61# _GLF_color = vec4(0); 62# } 63SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 64; SPIR-V 65; Version: 1.0 66; Generator: Khronos Glslang Reference Front End; 8 67; Bound: 60 68; Schema: 0 69 OpCapability Shader 70 %1 = OpExtInstImport "GLSL.std.450" 71 OpMemoryModel Logical GLSL450 72 OpEntryPoint Fragment %4 "main" %54 73 OpExecutionMode %4 OriginUpperLeft 74 OpSource ESSL 310 75 OpName %4 "main" 76 OpName %8 "a" 77 OpName %10 "b" 78 OpName %11 "i" 79 OpName %18 "buf1" 80 OpMemberName %18 0 "ten" 81 OpName %20 "" 82 OpName %32 "buf0" 83 OpMemberName %32 0 "minusEight" 84 OpName %34 "" 85 OpName %54 "_GLF_color" 86 OpMemberDecorate %18 0 Offset 0 87 OpDecorate %18 Block 88 OpDecorate %20 DescriptorSet 0 89 OpDecorate %20 Binding 1 90 OpMemberDecorate %32 0 Offset 0 91 OpDecorate %32 Block 92 OpDecorate %34 DescriptorSet 0 93 OpDecorate %34 Binding 0 94 OpDecorate %54 Location 0 95 %2 = OpTypeVoid 96 %3 = OpTypeFunction %2 97 %6 = OpTypeInt 32 1 98 %7 = OpTypePointer Function %6 99 %9 = OpConstant %6 0 100 %18 = OpTypeStruct %6 101 %19 = OpTypePointer Uniform %18 102 %20 = OpVariable %19 Uniform 103 %21 = OpTypePointer Uniform %6 104 %24 = OpTypeBool 105 %27 = OpConstant %6 5 106 %32 = OpTypeStruct %6 107 %33 = OpTypePointer Uniform %32 108 %34 = OpVariable %33 Uniform 109 %37 = OpConstant %6 -4 110 %42 = OpConstant %6 1 111 %47 = OpConstant %6 3 112 %51 = OpTypeFloat 32 113 %52 = OpTypeVector %51 4 114 %53 = OpTypePointer Output %52 115 %54 = OpVariable %53 Output 116 %55 = OpConstant %51 1 117 %56 = OpConstant %51 0 118 %57 = OpConstantComposite %52 %55 %56 %56 %55 119 %59 = OpConstantComposite %52 %56 %56 %56 %56 120 %4 = OpFunction %2 None %3 121 %5 = OpLabel 122 %8 = OpVariable %7 Function 123 %10 = OpVariable %7 Function 124 %11 = OpVariable %7 Function 125 OpStore %8 %9 126 OpStore %10 %9 127 OpStore %11 %9 128 OpBranch %12 129 %12 = OpLabel 130 OpLoopMerge %14 %15 None 131 OpBranch %16 132 %16 = OpLabel 133 %17 = OpLoad %6 %11 134 %22 = OpAccessChain %21 %20 %9 135 %23 = OpLoad %6 %22 136 %25 = OpSLessThan %24 %17 %23 137 OpBranchConditional %25 %13 %14 138 %13 = OpLabel 139 %26 = OpLoad %6 %8 140 %28 = OpSGreaterThan %24 %26 %27 141 OpSelectionMerge %30 None 142 OpBranchConditional %28 %29 %30 143 %29 = OpLabel 144 OpBranch %14 145 %30 = OpLabel 146 %35 = OpAccessChain %21 %34 %9 147 %36 = OpLoad %6 %35 148 %38 = OpSDiv %6 %36 %37 149 %39 = OpLoad %6 %8 150 %40 = OpIAdd %6 %39 %38 151 OpStore %8 %40 152 %41 = OpLoad %6 %10 153 %43 = OpIAdd %6 %41 %42 154 OpStore %10 %43 155 OpBranch %15 156 %15 = OpLabel 157 %44 = OpLoad %6 %11 158 %45 = OpIAdd %6 %44 %42 159 OpStore %11 %45 160 OpBranch %12 161 %14 = OpLabel 162 %46 = OpLoad %6 %10 163 %48 = OpIEqual %24 %46 %47 164 OpSelectionMerge %50 None 165 OpBranchConditional %48 %49 %58 166 %49 = OpLabel 167 OpStore %54 %57 168 OpBranch %50 169 %58 = OpLabel 170 OpStore %54 %59 171 OpBranch %50 172 %50 = OpLabel 173 OpReturn 174 OpFunctionEnd 175END 176 177# uniforms for variant 178 179# minuseight 180BUFFER variant_minuseight DATA_TYPE int32 DATA 181 -8 182END 183# ten 184BUFFER variant_ten DATA_TYPE int32 DATA 185 10 186END 187 188BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 189 190PIPELINE graphics variant_pipeline 191 ATTACH variant_vertex_shader 192 ATTACH variant_fragment_shader 193 FRAMEBUFFER_SIZE 256 256 194 BIND BUFFER variant_framebuffer AS color LOCATION 0 195 BIND BUFFER variant_minuseight AS uniform DESCRIPTOR_SET 0 BINDING 0 196 BIND BUFFER variant_ten AS uniform DESCRIPTOR_SET 0 BINDING 1 197END 198CLEAR_COLOR variant_pipeline 0 0 0 255 199 200CLEAR variant_pipeline 201RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 202 203EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 204