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 floating point 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 _int_0 _GLF_uniform_int_values[1] 30# #define _int_5 _GLF_uniform_int_values[2] 31# 32# precision highp float; 33# 34# precision highp int; 35# 36# // Contents of _GLF_uniform_int_values: [1, 0] 37# layout(set = 0, binding = 0) uniform buf0 38# { 39# int _GLF_uniform_int_values[3]; 40# }; 41# 42# layout(location = 0) out vec4 _GLF_color; 43# 44# void main() 45# { 46# for (int i = _int_0; i < _int_5; i++) 47# { 48# vec4 v = unpackUnorm4x8(100u); 49# 50# // Always false. 51# if (int(v.x) > i) 52# { 53# _GLF_color = vec4(_int_0); 54# return; 55# } 56# } 57# _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1); 58# } 59SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 60; SPIR-V 61; Version: 1.0 62; Generator: Khronos Glslang Reference Front End; 8 63; Bound: 68 64; Schema: 0 65 OpCapability Shader 66 %1 = OpExtInstImport "GLSL.std.450" 67 OpMemoryModel Logical GLSL450 68 OpEntryPoint Fragment %4 "main" %47 69 OpExecutionMode %4 OriginUpperLeft 70 OpSource ESSL 310 71 OpName %4 "main" 72 OpName %8 "i" 73 OpName %12 "buf0" 74 OpMemberName %12 0 "_GLF_uniform_int_values" 75 OpName %14 "" 76 OpName %34 "v" 77 OpName %47 "_GLF_color" 78 OpDecorate %11 ArrayStride 16 79 OpMemberDecorate %12 0 Offset 0 80 OpDecorate %12 Block 81 OpDecorate %14 DescriptorSet 0 82 OpDecorate %14 Binding 0 83 OpDecorate %47 Location 0 84 %2 = OpTypeVoid 85 %3 = OpTypeFunction %2 86 %6 = OpTypeInt 32 1 87 %7 = OpTypePointer Function %6 88 %9 = OpTypeInt 32 0 89 %10 = OpConstant %9 3 90 %11 = OpTypeArray %6 %10 91 %12 = OpTypeStruct %11 92 %13 = OpTypePointer Uniform %12 93 %14 = OpVariable %13 Uniform 94 %15 = OpConstant %6 0 95 %16 = OpConstant %6 1 96 %17 = OpTypePointer Uniform %6 97 %26 = OpConstant %6 2 98 %29 = OpTypeBool 99 %31 = OpTypeFloat 32 100 %32 = OpTypeVector %31 4 101 %33 = OpTypePointer Function %32 102 %35 = OpConstant %9 100 103 %37 = OpConstant %9 0 104 %38 = OpTypePointer Function %31 105 %46 = OpTypePointer Output %32 106 %47 = OpVariable %46 Output 107 %4 = OpFunction %2 None %3 108 %5 = OpLabel 109 %8 = OpVariable %7 Function 110 %34 = OpVariable %33 Function 111 %18 = OpAccessChain %17 %14 %15 %16 112 %19 = OpLoad %6 %18 113 OpStore %8 %19 114 OpBranch %20 115 %20 = OpLabel 116 OpLoopMerge %22 %23 None 117 OpBranch %24 118 %24 = OpLabel 119 %25 = OpLoad %6 %8 120 %27 = OpAccessChain %17 %14 %15 %26 121 %28 = OpLoad %6 %27 122 %30 = OpSLessThan %29 %25 %28 123 OpBranchConditional %30 %21 %22 124 %21 = OpLabel 125 %36 = OpExtInst %32 %1 UnpackUnorm4x8 %35 126 OpStore %34 %36 127 %39 = OpAccessChain %38 %34 %37 128 %40 = OpLoad %31 %39 129 %41 = OpConvertFToS %6 %40 130 %42 = OpLoad %6 %8 131 %43 = OpSGreaterThan %29 %41 %42 132 OpSelectionMerge %45 None 133 OpBranchConditional %43 %44 %45 134 %44 = OpLabel 135 %48 = OpAccessChain %17 %14 %15 %16 136 %49 = OpLoad %6 %48 137 %50 = OpConvertSToF %31 %49 138 %51 = OpCompositeConstruct %32 %50 %50 %50 %50 139 OpStore %47 %51 140 OpReturn 141 %45 = OpLabel 142 OpBranch %23 143 %23 = OpLabel 144 %53 = OpLoad %6 %8 145 %54 = OpIAdd %6 %53 %16 146 OpStore %8 %54 147 OpBranch %20 148 %22 = OpLabel 149 %55 = OpAccessChain %17 %14 %15 %15 150 %56 = OpLoad %6 %55 151 %57 = OpConvertSToF %31 %56 152 %58 = OpAccessChain %17 %14 %15 %16 153 %59 = OpLoad %6 %58 154 %60 = OpConvertSToF %31 %59 155 %61 = OpAccessChain %17 %14 %15 %16 156 %62 = OpLoad %6 %61 157 %63 = OpConvertSToF %31 %62 158 %64 = OpAccessChain %17 %14 %15 %15 159 %65 = OpLoad %6 %64 160 %66 = OpConvertSToF %31 %65 161 %67 = OpCompositeConstruct %32 %57 %60 %63 %66 162 OpStore %47 %67 163 OpReturn 164 OpFunctionEnd 165END 166 167# uniforms for variant 168 169# _GLF_uniform_int_values 170BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 171 1 0 5 172END 173 174BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 175 176PIPELINE graphics variant_pipeline 177 ATTACH variant_vertex_shader 178 ATTACH variant_fragment_shader 179 FRAMEBUFFER_SIZE 16 16 180 BIND BUFFER variant_framebuffer AS color LOCATION 0 181 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0 182END 183CLEAR_COLOR variant_pipeline 0 0 0 255 184 185CLEAR variant_pipeline 186RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 16 16 187 188EXPECT variant_framebuffer IDX 0 0 SIZE 16 16 EQ_RGBA 255 0 0 255 189