1#!amber 2 3# Copyright 2022 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 specific LLVM code paths 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 320 es 28# #define _int_1 _GLF_uniform_int_values[0] 29# #define _int_0 _GLF_uniform_int_values[1] 30# 31# precision highp float; 32# precision highp int; 33# 34# // Contents of _GLF_uniform_int_values: [1, 0] 35# layout(set = 0, binding = 0) uniform buf0 36# { 37# int _GLF_uniform_int_values[2]; 38# }; 39# 40# layout(location = 0) out vec4 _GLF_color; 41# 42# void main() 43# { 44# // Depending on the pixel location a has either all or none bits enabled. 45# int a = (int(gl_FragCoord.x) & 1) != 0 ? 0 : ~0; 46# 47# // When a = 0: 48# // ~(a | 1) = ~1 != 1 49# // 50# // When a = ~0: 51# // ~(a | 1) = ~(~0)) = 0 != 1 52# if(~(a | _int_1) != _int_1) 53# { 54# _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1); 55# } 56# else 57# { 58# _GLF_color = vec4(_int_0); 59# } 60# } 61SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 62; SPIR-V 63; Version: 1.0 64; Generator: Khronos Glslang Reference Front End; 10 65; Bound: 62 66; Schema: 0 67 OpCapability Shader 68 %1 = OpExtInstImport "GLSL.std.450" 69 OpMemoryModel Logical GLSL450 70 OpEntryPoint Fragment %4 "main" %12 %43 71 OpExecutionMode %4 OriginUpperLeft 72 OpSource ESSL 320 73 OpName %4 "main" 74 OpName %8 "a" 75 OpName %12 "gl_FragCoord" 76 OpName %29 "buf0" 77 OpMemberName %29 0 "_GLF_uniform_int_values" 78 OpName %31 "" 79 OpName %43 "_GLF_color" 80 OpDecorate %12 BuiltIn FragCoord 81 OpDecorate %28 ArrayStride 16 82 OpMemberDecorate %29 0 Offset 0 83 OpDecorate %29 Block 84 OpDecorate %31 DescriptorSet 0 85 OpDecorate %31 Binding 0 86 OpDecorate %43 Location 0 87 %2 = OpTypeVoid 88 %3 = OpTypeFunction %2 89 %6 = OpTypeInt 32 1 90 %7 = OpTypePointer Function %6 91 %9 = OpTypeFloat 32 92 %10 = OpTypeVector %9 4 93 %11 = OpTypePointer Input %10 94 %12 = OpVariable %11 Input 95 %13 = OpTypeInt 32 0 96 %14 = OpConstant %13 0 97 %15 = OpTypePointer Input %9 98 %19 = OpConstant %6 1 99 %21 = OpConstant %6 0 100 %22 = OpTypeBool 101 %24 = OpConstant %6 -1 102 %27 = OpConstant %13 2 103 %28 = OpTypeArray %6 %27 104 %29 = OpTypeStruct %28 105 %30 = OpTypePointer Uniform %29 106 %31 = OpVariable %30 Uniform 107 %32 = OpTypePointer Uniform %6 108 %42 = OpTypePointer Output %10 109 %43 = OpVariable %42 Output 110 %4 = OpFunction %2 None %3 111 %5 = OpLabel 112 %8 = OpVariable %7 Function 113 %16 = OpAccessChain %15 %12 %14 114 %17 = OpLoad %9 %16 115 %18 = OpConvertFToS %6 %17 116 %20 = OpBitwiseAnd %6 %18 %19 117 %23 = OpINotEqual %22 %20 %21 118 %25 = OpSelect %6 %23 %21 %24 119 OpStore %8 %25 120 %26 = OpLoad %6 %8 121 %33 = OpAccessChain %32 %31 %21 %21 122 %34 = OpLoad %6 %33 123 %35 = OpBitwiseOr %6 %26 %34 124 %36 = OpNot %6 %35 125 %37 = OpAccessChain %32 %31 %21 %21 126 %38 = OpLoad %6 %37 127 %39 = OpINotEqual %22 %36 %38 128 OpSelectionMerge %41 None 129 OpBranchConditional %39 %40 %57 130 %40 = OpLabel 131 %44 = OpAccessChain %32 %31 %21 %21 132 %45 = OpLoad %6 %44 133 %46 = OpConvertSToF %9 %45 134 %47 = OpAccessChain %32 %31 %21 %19 135 %48 = OpLoad %6 %47 136 %49 = OpConvertSToF %9 %48 137 %50 = OpAccessChain %32 %31 %21 %19 138 %51 = OpLoad %6 %50 139 %52 = OpConvertSToF %9 %51 140 %53 = OpAccessChain %32 %31 %21 %21 141 %54 = OpLoad %6 %53 142 %55 = OpConvertSToF %9 %54 143 %56 = OpCompositeConstruct %10 %46 %49 %52 %55 144 OpStore %43 %56 145 OpBranch %41 146 %57 = OpLabel 147 %58 = OpAccessChain %32 %31 %21 %19 148 %59 = OpLoad %6 %58 149 %60 = OpConvertSToF %9 %59 150 %61 = OpCompositeConstruct %10 %60 %60 %60 %60 151 OpStore %43 %61 152 OpBranch %41 153 %41 = OpLabel 154 OpReturn 155 OpFunctionEnd 156END 157 158# uniforms for variant 159 160# _GLF_uniform_int_values 161BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 162 1 0 163END 164 165BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 166 167PIPELINE graphics variant_pipeline 168 ATTACH variant_vertex_shader 169 ATTACH variant_fragment_shader 170 FRAMEBUFFER_SIZE 32 32 171 BIND BUFFER variant_framebuffer AS color LOCATION 0 172 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0 173END 174CLEAR_COLOR variant_pipeline 0 0 0 255 175 176CLEAR variant_pipeline 177RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 32 32 178 179EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255 180