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 the GraphicsFuzz project. 19 20# Short description: A fragment shader that covers a specific inst combine compares 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# #define _int_0 _GLF_uniform_int_values[0] 29# #define _int_1 _GLF_uniform_int_values[1] 30# #define _int_10 _GLF_uniform_int_values[2] 31# #define _float_1_0 _GLF_uniform_float_values[0] 32# 33# precision highp float; 34# 35# precision highp int; 36# 37# // Contents of _GLF_uniform_float_values: 1.0 38# layout(set = 0, binding = 0) uniform buf0 39# { 40# float _GLF_uniform_float_values[1]; 41# }; 42# 43# // Contents of _GLF_uniform_int_values: [0, 1, 10] 44# layout(set = 0, binding = 1) uniform buf1 45# { 46# int _GLF_uniform_int_values[3]; 47# }; 48# layout(location = 0) out vec4 _GLF_color; 49# 50# void main() 51# { 52# int i = _int_10; 53# while (i >= 0) 54# { 55# if ((i % 2) == 0) 56# { 57# _GLF_color = vec4(1, _int_0, _int_0, _int_1); 58# } 59# else 60# { 61# _GLF_color = vec4(_float_1_0); 62# } 63# i--; 64# } 65# } 66SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 67; SPIR-V 68; Version: 1.0 69; Generator: Khronos Glslang Reference Front End; 8 70; Bound: 61 71; Schema: 0 72 OpCapability Shader 73 %1 = OpExtInstImport "GLSL.std.450" 74 OpMemoryModel Logical GLSL450 75 OpEntryPoint Fragment %4 "main" %36 76 OpExecutionMode %4 OriginUpperLeft 77 OpSource ESSL 310 78 OpName %4 "main" 79 OpName %8 "i" 80 OpName %12 "buf1" 81 OpMemberName %12 0 "_GLF_uniform_int_values" 82 OpName %14 "" 83 OpName %36 "_GLF_color" 84 OpName %52 "buf0" 85 OpMemberName %52 0 "_GLF_uniform_float_values" 86 OpName %54 "" 87 OpDecorate %11 ArrayStride 16 88 OpMemberDecorate %12 0 Offset 0 89 OpDecorate %12 Block 90 OpDecorate %14 DescriptorSet 0 91 OpDecorate %14 Binding 1 92 OpDecorate %36 Location 0 93 OpDecorate %51 ArrayStride 16 94 OpMemberDecorate %52 0 Offset 0 95 OpDecorate %52 Block 96 OpDecorate %54 DescriptorSet 0 97 OpDecorate %54 Binding 0 98 %2 = OpTypeVoid 99 %3 = OpTypeFunction %2 100 %6 = OpTypeInt 32 1 101 %7 = OpTypePointer Function %6 102 %9 = OpTypeInt 32 0 103 %10 = OpConstant %9 3 104 %11 = OpTypeArray %6 %10 105 %12 = OpTypeStruct %11 106 %13 = OpTypePointer Uniform %12 107 %14 = OpVariable %13 Uniform 108 %15 = OpConstant %6 0 109 %16 = OpConstant %6 2 110 %17 = OpTypePointer Uniform %6 111 %26 = OpTypeBool 112 %33 = OpTypeFloat 32 113 %34 = OpTypeVector %33 4 114 %35 = OpTypePointer Output %34 115 %36 = OpVariable %35 Output 116 %37 = OpConstant %33 1 117 %44 = OpConstant %6 1 118 %50 = OpConstant %9 1 119 %51 = OpTypeArray %33 %50 120 %52 = OpTypeStruct %51 121 %53 = OpTypePointer Uniform %52 122 %54 = OpVariable %53 Uniform 123 %55 = OpTypePointer Uniform %33 124 %4 = OpFunction %2 None %3 125 %5 = OpLabel 126 %8 = OpVariable %7 Function 127 %18 = OpAccessChain %17 %14 %15 %16 128 %19 = OpLoad %6 %18 129 OpStore %8 %19 130 OpBranch %20 131 %20 = OpLabel 132 OpLoopMerge %22 %23 None 133 OpBranch %24 134 %24 = OpLabel 135 %25 = OpLoad %6 %8 136 %27 = OpSGreaterThanEqual %26 %25 %15 137 OpBranchConditional %27 %21 %22 138 %21 = OpLabel 139 %28 = OpLoad %6 %8 140 %29 = OpSMod %6 %28 %16 141 %30 = OpIEqual %26 %29 %15 142 OpSelectionMerge %32 None 143 OpBranchConditional %30 %31 %49 144 %31 = OpLabel 145 %38 = OpAccessChain %17 %14 %15 %15 146 %39 = OpLoad %6 %38 147 %40 = OpConvertSToF %33 %39 148 %41 = OpAccessChain %17 %14 %15 %15 149 %42 = OpLoad %6 %41 150 %43 = OpConvertSToF %33 %42 151 %45 = OpAccessChain %17 %14 %15 %44 152 %46 = OpLoad %6 %45 153 %47 = OpConvertSToF %33 %46 154 %48 = OpCompositeConstruct %34 %37 %40 %43 %47 155 OpStore %36 %48 156 OpBranch %32 157 %49 = OpLabel 158 %56 = OpAccessChain %55 %54 %15 %15 159 %57 = OpLoad %33 %56 160 %58 = OpCompositeConstruct %34 %57 %57 %57 %57 161 OpStore %36 %58 162 OpBranch %32 163 %32 = OpLabel 164 %59 = OpLoad %6 %8 165 %60 = OpISub %6 %59 %44 166 OpStore %8 %60 167 OpBranch %23 168 %23 = OpLabel 169 OpBranch %20 170 %22 = OpLabel 171 OpReturn 172 OpFunctionEnd 173END 174 175# uniforms for variant 176 177# _GLF_uniform_int_values 178BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 179 0 1 10 180END 181# _GLF_uniform_float_values 182BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA 183 1.0 184END 185 186BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 187 188PIPELINE graphics variant_pipeline 189 ATTACH variant_vertex_shader 190 ATTACH variant_fragment_shader 191 FRAMEBUFFER_SIZE 256 256 192 BIND BUFFER variant_framebuffer AS color LOCATION 0 193 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1 194 BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 0 195END 196CLEAR_COLOR variant_pipeline 0 0 0 255 197 198CLEAR variant_pipeline 199RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 200 201EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 202