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 selection DAG 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# 30# layout(location = 0) out vec4 _GLF_color; 31# 32# layout(set = 0, binding = 0) uniform buf0 33# { 34# float one; 35# }; 36# 37# void main() 38# { 39# _GLF_color = vec4(0); 40# 41# // Always false. 42# if(one < 0.0 && one < 0.0) 43# { 44# _GLF_color = vec4(1); 45# } 46# else 47# { 48# _GLF_color = vec4(1, 0, 0, 1); 49# } 50# } 51SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 52; SPIR-V 53; Version: 1.0 54; Generator: Khronos Glslang Reference Front End; 8 55; Bound: 34 56; Schema: 0 57 OpCapability Shader 58 %1 = OpExtInstImport "GLSL.std.450" 59 OpMemoryModel Logical GLSL450 60 OpEntryPoint Fragment %4 "main" %9 61 OpExecutionMode %4 OriginUpperLeft 62 OpSource ESSL 310 63 OpName %4 "main" 64 OpName %9 "_GLF_color" 65 OpName %13 "buf0" 66 OpMemberName %13 0 "one" 67 OpName %15 "" 68 OpDecorate %9 Location 0 69 OpMemberDecorate %13 0 Offset 0 70 OpDecorate %13 Block 71 OpDecorate %15 DescriptorSet 0 72 OpDecorate %15 Binding 0 73 %2 = OpTypeVoid 74 %3 = OpTypeFunction %2 75 %6 = OpTypeFloat 32 76 %7 = OpTypeVector %6 4 77 %8 = OpTypePointer Output %7 78 %9 = OpVariable %8 Output 79 %10 = OpConstant %6 0 80 %11 = OpConstantComposite %7 %10 %10 %10 %10 81 %12 = OpTypeBool 82 %13 = OpTypeStruct %6 83 %14 = OpTypePointer Uniform %13 84 %15 = OpVariable %14 Uniform 85 %16 = OpTypeInt 32 1 86 %17 = OpConstant %16 0 87 %18 = OpTypePointer Uniform %6 88 %30 = OpConstant %6 1 89 %31 = OpConstantComposite %7 %30 %30 %30 %30 90 %33 = OpConstantComposite %7 %30 %10 %10 %30 91 %4 = OpFunction %2 None %3 92 %5 = OpLabel 93 OpStore %9 %11 94 %19 = OpAccessChain %18 %15 %17 95 %20 = OpLoad %6 %19 96 %21 = OpFOrdLessThan %12 %20 %10 97 OpSelectionMerge %23 None 98 OpBranchConditional %21 %22 %23 99 %22 = OpLabel 100 %24 = OpAccessChain %18 %15 %17 101 %25 = OpLoad %6 %24 102 %26 = OpFOrdLessThan %12 %25 %10 103 OpBranch %23 104 %23 = OpLabel 105 %27 = OpPhi %12 %21 %5 %26 %22 106 OpSelectionMerge %29 None 107 OpBranchConditional %27 %28 %32 108 %28 = OpLabel 109 OpStore %9 %31 110 OpBranch %29 111 %32 = OpLabel 112 OpStore %9 %33 113 OpBranch %29 114 %29 = OpLabel 115 OpReturn 116 OpFunctionEnd 117END 118 119# uniforms for variant 120 121# one 122BUFFER variant_one DATA_TYPE float DATA 123 1.0 124END 125 126BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 127 128PIPELINE graphics variant_pipeline 129 ATTACH variant_vertex_shader 130 ATTACH variant_fragment_shader 131 FRAMEBUFFER_SIZE 256 256 132 BIND BUFFER variant_framebuffer AS color LOCATION 0 133 BIND BUFFER variant_one AS uniform DESCRIPTOR_SET 0 BINDING 0 134END 135CLEAR_COLOR variant_pipeline 0 0 0 255 136 137CLEAR variant_pipeline 138RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 139 140EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 141