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 GraphicsFuzz. 19 20# Short description: A fragment shader that covers a specific instruction simplification 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# precision highp float; 29# precision highp int; 30# 31# layout(location = 0) out vec4 _GLF_color; 32# 33# layout(set = 0, binding = 0) uniform buf0 34# { 35# int three; 36# }; 37# 38# void main() 39# { 40# // Always true. 41# if(three > 1 && !(gl_FragCoord.y < -5.0)) 42# _GLF_color = vec4(1, 0, 0, 1); 43# else 44# _GLF_color = vec4(0); 45# } 46SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 47; SPIR-V 48; Version: 1.0 49; Generator: Khronos Glslang Reference Front End; 8 50; Bound: 41 51; Schema: 0 52 OpCapability Shader 53 %1 = OpExtInstImport "GLSL.std.450" 54 OpMemoryModel Logical GLSL450 55 OpEntryPoint Fragment %4 "main" %22 %35 56 OpExecutionMode %4 OriginUpperLeft 57 OpSource ESSL 310 58 OpName %4 "main" 59 OpName %8 "buf0" 60 OpMemberName %8 0 "three" 61 OpName %10 "" 62 OpName %22 "gl_FragCoord" 63 OpName %35 "_GLF_color" 64 OpMemberDecorate %8 0 Offset 0 65 OpDecorate %8 Block 66 OpDecorate %10 DescriptorSet 0 67 OpDecorate %10 Binding 0 68 OpDecorate %22 BuiltIn FragCoord 69 OpDecorate %35 Location 0 70 %2 = OpTypeVoid 71 %3 = OpTypeFunction %2 72 %6 = OpTypeBool 73 %7 = OpTypeInt 32 1 74 %8 = OpTypeStruct %7 75 %9 = OpTypePointer Uniform %8 76 %10 = OpVariable %9 Uniform 77 %11 = OpConstant %7 0 78 %12 = OpTypePointer Uniform %7 79 %15 = OpConstant %7 1 80 %19 = OpTypeFloat 32 81 %20 = OpTypeVector %19 4 82 %21 = OpTypePointer Input %20 83 %22 = OpVariable %21 Input 84 %23 = OpTypeInt 32 0 85 %24 = OpConstant %23 1 86 %25 = OpTypePointer Input %19 87 %28 = OpConstant %19 -5 88 %34 = OpTypePointer Output %20 89 %35 = OpVariable %34 Output 90 %36 = OpConstant %19 1 91 %37 = OpConstant %19 0 92 %38 = OpConstantComposite %20 %36 %37 %37 %36 93 %40 = OpConstantComposite %20 %37 %37 %37 %37 94 %4 = OpFunction %2 None %3 95 %5 = OpLabel 96 %13 = OpAccessChain %12 %10 %11 97 %14 = OpLoad %7 %13 98 %16 = OpSGreaterThan %6 %14 %15 99 OpSelectionMerge %18 None 100 OpBranchConditional %16 %17 %18 101 %17 = OpLabel 102 %26 = OpAccessChain %25 %22 %24 103 %27 = OpLoad %19 %26 104 %29 = OpFOrdLessThan %6 %27 %28 105 %30 = OpLogicalNot %6 %29 106 OpBranch %18 107 %18 = OpLabel 108 %31 = OpPhi %6 %16 %5 %30 %17 109 OpSelectionMerge %33 None 110 OpBranchConditional %31 %32 %39 111 %32 = OpLabel 112 OpStore %35 %38 113 OpBranch %33 114 %39 = OpLabel 115 OpStore %35 %40 116 OpBranch %33 117 %33 = OpLabel 118 OpReturn 119 OpFunctionEnd 120END 121 122# uniforms for variant 123 124# three 125BUFFER variant_three DATA_TYPE int32 DATA 126 3 127END 128 129BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 130 131PIPELINE graphics variant_pipeline 132 ATTACH variant_vertex_shader 133 ATTACH variant_fragment_shader 134 FRAMEBUFFER_SIZE 256 256 135 BIND BUFFER variant_framebuffer AS color LOCATION 0 136 BIND BUFFER variant_three AS uniform DESCRIPTOR_SET 0 BINDING 0 137END 138CLEAR_COLOR variant_pipeline 0 0 0 255 139 140CLEAR variant_pipeline 141RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 142 143EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 144