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 IR builder path. 21 22# The test passes because 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# mat4 m = mat4(1.0, 1.0, 0.0, 1.0, 40# 0.0, 0.0, 1.0, 1.0, 41# 0.0, 0.0, one, 0.0, 42# 0.0, 0.0, 0.0, 0.0); 43# 44# if(abs(determinant(m)) < 0.01) 45# _GLF_color = vec4(1, 0, 0, 1); 46# else 47# _GLF_color = vec4(0); 48# } 49SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 50; SPIR-V 51; Version: 1.0 52; Generator: Khronos Glslang Reference Front End; 8 53; Bound: 39 54; Schema: 0 55 OpCapability Shader 56 %1 = OpExtInstImport "GLSL.std.450" 57 OpMemoryModel Logical GLSL450 58 OpEntryPoint Fragment %4 "main" %35 59 OpExecutionMode %4 OriginUpperLeft 60 OpSource ESSL 310 61 OpName %4 "main" 62 OpName %10 "m" 63 OpName %13 "buf0" 64 OpMemberName %13 0 "one" 65 OpName %15 "" 66 OpName %35 "_GLF_color" 67 OpMemberDecorate %13 0 Offset 0 68 OpDecorate %13 Block 69 OpDecorate %15 DescriptorSet 0 70 OpDecorate %15 Binding 0 71 OpDecorate %35 Location 0 72 %2 = OpTypeVoid 73 %3 = OpTypeFunction %2 74 %6 = OpTypeFloat 32 75 %7 = OpTypeVector %6 4 76 %8 = OpTypeMatrix %7 4 77 %9 = OpTypePointer Function %8 78 %11 = OpConstant %6 1 79 %12 = OpConstant %6 0 80 %13 = OpTypeStruct %6 81 %14 = OpTypePointer Uniform %13 82 %15 = OpVariable %14 Uniform 83 %16 = OpTypeInt 32 1 84 %17 = OpConstant %16 0 85 %18 = OpTypePointer Uniform %6 86 %29 = OpConstant %6 0.00999999978 87 %30 = OpTypeBool 88 %34 = OpTypePointer Output %7 89 %35 = OpVariable %34 Output 90 %36 = OpConstantComposite %7 %11 %12 %12 %11 91 %38 = OpConstantComposite %7 %12 %12 %12 %12 92 %4 = OpFunction %2 None %3 93 %5 = OpLabel 94 %10 = OpVariable %9 Function 95 %19 = OpAccessChain %18 %15 %17 96 %20 = OpLoad %6 %19 97 %21 = OpCompositeConstruct %7 %11 %11 %12 %11 98 %22 = OpCompositeConstruct %7 %12 %12 %11 %11 99 %23 = OpCompositeConstruct %7 %12 %12 %20 %12 100 %24 = OpCompositeConstruct %7 %12 %12 %12 %12 101 %25 = OpCompositeConstruct %8 %21 %22 %23 %24 102 OpStore %10 %25 103 %26 = OpLoad %8 %10 104 %27 = OpExtInst %6 %1 Determinant %26 105 %28 = OpExtInst %6 %1 FAbs %27 106 %31 = OpFOrdLessThan %30 %28 %29 107 OpSelectionMerge %33 None 108 OpBranchConditional %31 %32 %37 109 %32 = OpLabel 110 OpStore %35 %36 111 OpBranch %33 112 %37 = OpLabel 113 OpStore %35 %38 114 OpBranch %33 115 %33 = OpLabel 116 OpReturn 117 OpFunctionEnd 118END 119 120# uniforms for variant 121 122# one 123BUFFER variant_one DATA_TYPE float DATA 124 1.0 125END 126 127BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 128 129PIPELINE graphics variant_pipeline 130 ATTACH variant_vertex_shader 131 ATTACH variant_fragment_shader 132 FRAMEBUFFER_SIZE 256 256 133 BIND BUFFER variant_framebuffer AS color LOCATION 0 134 BIND BUFFER variant_one AS uniform DESCRIPTOR_SET 0 BINDING 0 135END 136CLEAR_COLOR variant_pipeline 0 0 0 255 137 138CLEAR variant_pipeline 139RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 140 141EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 142