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 instruction simplify code path 21 22# The test passes because the shader always writes red. 23 24# Optimized using spirv-opt with the following arguments: 25# '-O' 26# spirv-opt commit hash: a187dd58a0485988841d325a85c8e6063f53500a 27 28 29 30SHADER vertex variant_vertex_shader PASSTHROUGH 31 32# variant_fragment_shader is derived from the following GLSL: 33# #version 310 es 34# #define _int_1 _GLF_uniform_int_values[0] 35# #define _int_0 _GLF_uniform_int_values[1] 36# #define _float_1_0 _GLF_uniform_float_values[0] 37# #define _float_0_0 _GLF_uniform_float_values[0] 38# 39# precision highp float; 40# 41# // Contents of _GLF_uniform_float_values: [1.0, 0.0] 42# layout(set = 0, binding = 0) uniform buf0 43# { 44# float _GLF_uniform_float_values[2]; 45# }; 46# 47# // Contents of _GLF_uniform_int_values: [1, 0] 48# layout(set = 0, binding = 1) uniform buf1 49# { 50# int _GLF_uniform_int_values[2]; 51# }; 52# 53# layout(location = 0) out vec4 _GLF_color; 54# 55# void main() 56# { 57# float a = _float_1_0; 58# a = -1.; 59# if (sqrt(_float_0_0) < a) 60# { 61# _GLF_color = vec4(_int_0); 62# } 63# else 64# { 65# _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1); 66# } 67# } 68SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 69; SPIR-V 70; Version: 1.0 71; Generator: Khronos Glslang Reference Front End; 10 72; Bound: 56 73; Schema: 0 74 OpCapability Shader 75 %1 = OpExtInstImport "GLSL.std.450" 76 OpMemoryModel Logical GLSL450 77 OpEntryPoint Fragment %4 "main" %31 78 OpExecutionMode %4 OriginUpperLeft 79 OpSource ESSL 310 80 OpName %4 "main" 81 OpName %12 "buf0" 82 OpMemberName %12 0 "_GLF_uniform_float_values" 83 OpName %14 "" 84 OpName %31 "_GLF_color" 85 OpName %33 "buf1" 86 OpMemberName %33 0 "_GLF_uniform_int_values" 87 OpName %35 "" 88 OpDecorate %11 ArrayStride 16 89 OpMemberDecorate %12 0 Offset 0 90 OpDecorate %12 Block 91 OpDecorate %14 DescriptorSet 0 92 OpDecorate %14 Binding 0 93 OpDecorate %31 Location 0 94 OpDecorate %32 ArrayStride 16 95 OpMemberDecorate %33 0 RelaxedPrecision 96 OpMemberDecorate %33 0 Offset 0 97 OpDecorate %33 Block 98 OpDecorate %35 DescriptorSet 0 99 OpDecorate %35 Binding 1 100 OpDecorate %39 RelaxedPrecision 101 OpDecorate %44 RelaxedPrecision 102 OpDecorate %47 RelaxedPrecision 103 %2 = OpTypeVoid 104 %3 = OpTypeFunction %2 105 %6 = OpTypeFloat 32 106 %9 = OpTypeInt 32 0 107 %10 = OpConstant %9 2 108 %11 = OpTypeArray %6 %10 109 %12 = OpTypeStruct %11 110 %13 = OpTypePointer Uniform %12 111 %14 = OpVariable %13 Uniform 112 %15 = OpTypeInt 32 1 113 %16 = OpConstant %15 0 114 %17 = OpTypePointer Uniform %6 115 %20 = OpConstant %6 -1 116 %25 = OpTypeBool 117 %29 = OpTypeVector %6 4 118 %30 = OpTypePointer Output %29 119 %31 = OpVariable %30 Output 120 %32 = OpTypeArray %15 %10 121 %33 = OpTypeStruct %32 122 %34 = OpTypePointer Uniform %33 123 %35 = OpVariable %34 Uniform 124 %36 = OpConstant %15 1 125 %37 = OpTypePointer Uniform %15 126 %4 = OpFunction %2 None %3 127 %5 = OpLabel 128 %21 = OpAccessChain %17 %14 %16 %16 129 %22 = OpLoad %6 %21 130 %23 = OpExtInst %6 %1 Sqrt %22 131 %26 = OpFOrdLessThan %25 %23 %20 132 OpSelectionMerge %28 None 133 OpBranchConditional %26 %27 %42 134 %27 = OpLabel 135 %38 = OpAccessChain %37 %35 %16 %36 136 %39 = OpLoad %15 %38 137 %40 = OpConvertSToF %6 %39 138 %41 = OpCompositeConstruct %29 %40 %40 %40 %40 139 OpStore %31 %41 140 OpBranch %28 141 %42 = OpLabel 142 %43 = OpAccessChain %37 %35 %16 %16 143 %44 = OpLoad %15 %43 144 %45 = OpConvertSToF %6 %44 145 %46 = OpAccessChain %37 %35 %16 %36 146 %47 = OpLoad %15 %46 147 %48 = OpConvertSToF %6 %47 148 %55 = OpCompositeConstruct %29 %45 %48 %48 %45 149 OpStore %31 %55 150 OpBranch %28 151 %28 = OpLabel 152 OpReturn 153 OpFunctionEnd 154END 155 156# uniforms for variant 157 158# _GLF_uniform_int_values 159BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 160 1 0 161END 162# _GLF_uniform_float_values 163BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA 164 1.0 0.0 165END 166 167BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 168 169PIPELINE graphics variant_pipeline 170 ATTACH variant_vertex_shader 171 ATTACH variant_fragment_shader 172 FRAMEBUFFER_SIZE 256 256 173 BIND BUFFER variant_framebuffer AS color LOCATION 0 174 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1 175 BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 0 176END 177CLEAR_COLOR variant_pipeline 0 0 0 255 178 179CLEAR variant_pipeline 180RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 181 182EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 183