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# int a = (int(gl_FragCoord.y) & 1) != 0 ? 0 : ~ 0; 45# 46# // b becomes one: regardless of what a is, (a | ~a) always produces an integer with all bits on. 47# int b = _int_1 & (a | ~a); 48# 49# // Always true. 50# if(b == _int_1) 51# { 52# _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1); 53# } 54# else 55# { 56# _GLF_color = vec4(_int_0); 57# } 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; 10 63; Bound: 66 64; Schema: 0 65 OpCapability Shader 66 %1 = OpExtInstImport "GLSL.std.450" 67 OpMemoryModel Logical GLSL450 68 OpEntryPoint Fragment %4 "main" %12 %47 69 OpExecutionMode %4 OriginUpperLeft 70 OpSource ESSL 320 71 OpName %4 "main" 72 OpName %8 "a" 73 OpName %12 "gl_FragCoord" 74 OpName %26 "b" 75 OpName %29 "buf0" 76 OpMemberName %29 0 "_GLF_uniform_int_values" 77 OpName %31 "" 78 OpName %47 "_GLF_color" 79 OpDecorate %12 BuiltIn FragCoord 80 OpDecorate %28 ArrayStride 16 81 OpMemberDecorate %29 0 Offset 0 82 OpDecorate %29 Block 83 OpDecorate %31 DescriptorSet 0 84 OpDecorate %31 Binding 0 85 OpDecorate %47 Location 0 86 %2 = OpTypeVoid 87 %3 = OpTypeFunction %2 88 %6 = OpTypeInt 32 1 89 %7 = OpTypePointer Function %6 90 %9 = OpTypeFloat 32 91 %10 = OpTypeVector %9 4 92 %11 = OpTypePointer Input %10 93 %12 = OpVariable %11 Input 94 %13 = OpTypeInt 32 0 95 %14 = OpConstant %13 1 96 %15 = OpTypePointer Input %9 97 %19 = OpConstant %6 1 98 %21 = OpConstant %6 0 99 %22 = OpTypeBool 100 %24 = OpConstant %6 -1 101 %27 = OpConstant %13 2 102 %28 = OpTypeArray %6 %27 103 %29 = OpTypeStruct %28 104 %30 = OpTypePointer Uniform %29 105 %31 = OpVariable %30 Uniform 106 %32 = OpTypePointer Uniform %6 107 %46 = OpTypePointer Output %10 108 %47 = OpVariable %46 Output 109 %4 = OpFunction %2 None %3 110 %5 = OpLabel 111 %8 = OpVariable %7 Function 112 %26 = 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 %33 = OpAccessChain %32 %31 %21 %21 121 %34 = OpLoad %6 %33 122 %35 = OpLoad %6 %8 123 %36 = OpLoad %6 %8 124 %37 = OpNot %6 %36 125 %38 = OpBitwiseOr %6 %35 %37 126 %39 = OpBitwiseAnd %6 %34 %38 127 OpStore %26 %39 128 %40 = OpLoad %6 %26 129 %41 = OpAccessChain %32 %31 %21 %21 130 %42 = OpLoad %6 %41 131 %43 = OpIEqual %22 %40 %42 132 OpSelectionMerge %45 None 133 OpBranchConditional %43 %44 %61 134 %44 = OpLabel 135 %48 = OpAccessChain %32 %31 %21 %21 136 %49 = OpLoad %6 %48 137 %50 = OpConvertSToF %9 %49 138 %51 = OpAccessChain %32 %31 %21 %19 139 %52 = OpLoad %6 %51 140 %53 = OpConvertSToF %9 %52 141 %54 = OpAccessChain %32 %31 %21 %19 142 %55 = OpLoad %6 %54 143 %56 = OpConvertSToF %9 %55 144 %57 = OpAccessChain %32 %31 %21 %21 145 %58 = OpLoad %6 %57 146 %59 = OpConvertSToF %9 %58 147 %60 = OpCompositeConstruct %10 %50 %53 %56 %59 148 OpStore %47 %60 149 OpBranch %45 150 %61 = OpLabel 151 %62 = OpAccessChain %32 %31 %21 %19 152 %63 = OpLoad %6 %62 153 %64 = OpConvertSToF %9 %63 154 %65 = OpCompositeConstruct %10 %64 %64 %64 %64 155 OpStore %47 %65 156 OpBranch %45 157 %45 = OpLabel 158 OpReturn 159 OpFunctionEnd 160END 161 162# uniforms for variant 163 164# _GLF_uniform_int_values 165BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 166 1 0 167END 168 169BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 170 171PIPELINE graphics variant_pipeline 172 ATTACH variant_vertex_shader 173 ATTACH variant_fragment_shader 174 FRAMEBUFFER_SIZE 32 32 175 BIND BUFFER variant_framebuffer AS color LOCATION 0 176 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0 177END 178CLEAR_COLOR variant_pipeline 0 0 0 255 179 180CLEAR variant_pipeline 181RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 32 32 182 183EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255 184