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 peephole optimizer 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_1 _GLF_uniform_int_values[0] 29# #define _float_1_2 _GLF_uniform_float_values[0] 30# #define _float_0_0 _GLF_uniform_float_values[1] 31# #define _float_1_0 _GLF_uniform_float_values[2] 32# 33# precision highp float; 34# 35# precision highp int; 36# 37# // Contents of _GLF_uniform_int_values: 1 38# layout(set = 0, binding = 0) uniform buf0 39# { 40# int _GLF_uniform_int_values[1]; 41# }; 42# 43# // Contents of _GLF_uniform_float_values: [1.2, 0.0, 1.0] 44# layout(set = 0, binding = 1) uniform buf1 45# { 46# float _GLF_uniform_float_values[3]; 47# }; 48# 49# layout(location = 0) out vec4 _GLF_color; 50# 51# void main() 52# { 53# float a = _float_1_2; 54# 55# // Always true. 56# if (!(gl_FragCoord.x < _float_0_0)) 57# { 58# // Always true. 59# if (!(gl_FragCoord.x < _float_0_0)) 60# { 61# // Always false. 62# if (!(gl_FragCoord.x > _float_0_0)) 63# { 64# discard; 65# } 66# a = _float_1_0; 67# } 68# } 69# _GLF_color = vec4(_int_1, acosh(a), acosh(a), _int_1); 70# } 71SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 72; SPIR-V 73; Version: 1.0 74; Generator: Khronos Glslang Reference Front End; 8 75; Bound: 74 76; Schema: 0 77 OpCapability Shader 78 %1 = OpExtInstImport "GLSL.std.450" 79 OpMemoryModel Logical GLSL450 80 OpEntryPoint Fragment %4 "main" %22 %56 81 OpExecutionMode %4 OriginUpperLeft 82 OpSource ESSL 310 83 OpName %4 "main" 84 OpName %8 "a" 85 OpName %12 "buf1" 86 OpMemberName %12 0 "_GLF_uniform_float_values" 87 OpName %14 "" 88 OpName %22 "gl_FragCoord" 89 OpName %56 "_GLF_color" 90 OpName %59 "buf0" 91 OpMemberName %59 0 "_GLF_uniform_int_values" 92 OpName %61 "" 93 OpDecorate %11 ArrayStride 16 94 OpMemberDecorate %12 0 Offset 0 95 OpDecorate %12 Block 96 OpDecorate %14 DescriptorSet 0 97 OpDecorate %14 Binding 1 98 OpDecorate %22 BuiltIn FragCoord 99 OpDecorate %56 Location 0 100 OpDecorate %58 ArrayStride 16 101 OpMemberDecorate %59 0 Offset 0 102 OpDecorate %59 Block 103 OpDecorate %61 DescriptorSet 0 104 OpDecorate %61 Binding 0 105 %2 = OpTypeVoid 106 %3 = OpTypeFunction %2 107 %6 = OpTypeFloat 32 108 %7 = OpTypePointer Function %6 109 %9 = OpTypeInt 32 0 110 %10 = OpConstant %9 3 111 %11 = OpTypeArray %6 %10 112 %12 = OpTypeStruct %11 113 %13 = OpTypePointer Uniform %12 114 %14 = OpVariable %13 Uniform 115 %15 = OpTypeInt 32 1 116 %16 = OpConstant %15 0 117 %17 = OpTypePointer Uniform %6 118 %20 = OpTypeVector %6 4 119 %21 = OpTypePointer Input %20 120 %22 = OpVariable %21 Input 121 %23 = OpConstant %9 0 122 %24 = OpTypePointer Input %6 123 %27 = OpConstant %15 1 124 %30 = OpTypeBool 125 %52 = OpConstant %15 2 126 %55 = OpTypePointer Output %20 127 %56 = OpVariable %55 Output 128 %57 = OpConstant %9 1 129 %58 = OpTypeArray %15 %57 130 %59 = OpTypeStruct %58 131 %60 = OpTypePointer Uniform %59 132 %61 = OpVariable %60 Uniform 133 %62 = OpTypePointer Uniform %15 134 %4 = OpFunction %2 None %3 135 %5 = OpLabel 136 %8 = OpVariable %7 Function 137 %18 = OpAccessChain %17 %14 %16 %16 138 %19 = OpLoad %6 %18 139 OpStore %8 %19 140 %25 = OpAccessChain %24 %22 %23 141 %26 = OpLoad %6 %25 142 %28 = OpAccessChain %17 %14 %16 %27 143 %29 = OpLoad %6 %28 144 %31 = OpFOrdLessThan %30 %26 %29 145 %32 = OpLogicalNot %30 %31 146 OpSelectionMerge %34 None 147 OpBranchConditional %32 %33 %34 148 %33 = OpLabel 149 %35 = OpAccessChain %24 %22 %23 150 %36 = OpLoad %6 %35 151 %37 = OpAccessChain %17 %14 %16 %27 152 %38 = OpLoad %6 %37 153 %39 = OpFOrdLessThan %30 %36 %38 154 %40 = OpLogicalNot %30 %39 155 OpSelectionMerge %42 None 156 OpBranchConditional %40 %41 %42 157 %41 = OpLabel 158 %43 = OpAccessChain %24 %22 %23 159 %44 = OpLoad %6 %43 160 %45 = OpAccessChain %17 %14 %16 %27 161 %46 = OpLoad %6 %45 162 %47 = OpFOrdGreaterThan %30 %44 %46 163 %48 = OpLogicalNot %30 %47 164 OpSelectionMerge %50 None 165 OpBranchConditional %48 %49 %50 166 %49 = OpLabel 167 OpKill 168 %50 = OpLabel 169 %53 = OpAccessChain %17 %14 %16 %52 170 %54 = OpLoad %6 %53 171 OpStore %8 %54 172 OpBranch %42 173 %42 = OpLabel 174 OpBranch %34 175 %34 = OpLabel 176 %63 = OpAccessChain %62 %61 %16 %16 177 %64 = OpLoad %15 %63 178 %65 = OpConvertSToF %6 %64 179 %66 = OpLoad %6 %8 180 %67 = OpExtInst %6 %1 Acosh %66 181 %68 = OpLoad %6 %8 182 %69 = OpExtInst %6 %1 Acosh %68 183 %70 = OpAccessChain %62 %61 %16 %16 184 %71 = OpLoad %15 %70 185 %72 = OpConvertSToF %6 %71 186 %73 = OpCompositeConstruct %20 %65 %67 %69 %72 187 OpStore %56 %73 188 OpReturn 189 OpFunctionEnd 190END 191 192# uniforms for variant 193 194# _GLF_uniform_float_values 195BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA 196 1.2 0.0 1.0 197END 198# _GLF_uniform_int_values 199BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 200 1 201END 202 203BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 204 205PIPELINE graphics variant_pipeline 206 ATTACH variant_vertex_shader 207 ATTACH variant_fragment_shader 208 FRAMEBUFFER_SIZE 256 256 209 BIND BUFFER variant_framebuffer AS color LOCATION 0 210 BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1 211 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0 212END 213CLEAR_COLOR variant_pipeline 0 0 0 255 214 215CLEAR variant_pipeline 216RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 217 218EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 219