1#!amber 2 3# Copyright 2021 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 VTN 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 320 es 28# 29# precision highp float; 30# precision highp int; 31# 32# layout(location = 0) out vec4 _GLF_color; 33# 34# void main() 35# { 36# mat2 m = transpose(mat2(1, 2, 3, 4)) / 2.0; 37# 38# if (m == mat2(0.5, 1.5, 1.0, 2.0)) 39# _GLF_color = vec4(1, 0, 0, 1); 40# else 41# _GLF_color = vec4(0); 42# } 43SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 44; SPIR-V 45; Version: 1.0 46; Generator: Khronos Glslang Reference Front End; 10 47; Bound: 46 48; Schema: 0 49 OpCapability Shader 50 %1 = OpExtInstImport "GLSL.std.450" 51 OpMemoryModel Logical GLSL450 52 OpEntryPoint Fragment %4 "main" %41 53 OpExecutionMode %4 OriginUpperLeft 54 OpSource ESSL 320 55 OpName %4 "main" 56 OpName %10 "m" 57 OpName %41 "_GLF_color" 58 OpDecorate %41 Location 0 59 %2 = OpTypeVoid 60 %3 = OpTypeFunction %2 61 %6 = OpTypeFloat 32 62 %7 = OpTypeVector %6 2 63 %8 = OpTypeMatrix %7 2 64 %9 = OpTypePointer Function %8 65 %11 = OpConstant %6 1 66 %12 = OpConstant %6 2 67 %13 = OpConstantComposite %7 %11 %12 68 %14 = OpConstant %6 3 69 %15 = OpConstant %6 4 70 %16 = OpConstantComposite %7 %14 %15 71 %17 = OpConstantComposite %8 %13 %16 72 %22 = OpConstant %6 0.5 73 %23 = OpConstant %6 1.5 74 %24 = OpConstantComposite %7 %22 %23 75 %25 = OpConstantComposite %8 %24 %13 76 %26 = OpTypeBool 77 %29 = OpTypeVector %26 2 78 %39 = OpTypeVector %6 4 79 %40 = OpTypePointer Output %39 80 %41 = OpVariable %40 Output 81 %42 = OpConstant %6 0 82 %43 = OpConstantComposite %39 %11 %42 %42 %11 83 %45 = OpConstantComposite %39 %42 %42 %42 %42 84 %4 = OpFunction %2 None %3 85 %5 = OpLabel 86 %10 = OpVariable %9 Function 87 %18 = OpTranspose %8 %17 88 %19 = OpFDiv %6 %11 %12 89 %20 = OpMatrixTimesScalar %8 %18 %19 90 OpStore %10 %20 91 %21 = OpLoad %8 %10 92 %27 = OpCompositeExtract %7 %21 0 93 %28 = OpCompositeExtract %7 %25 0 94 %30 = OpFOrdEqual %29 %27 %28 95 %31 = OpAll %26 %30 96 %32 = OpCompositeExtract %7 %21 1 97 %33 = OpCompositeExtract %7 %25 1 98 %34 = OpFOrdEqual %29 %32 %33 99 %35 = OpAll %26 %34 100 %36 = OpLogicalAnd %26 %31 %35 101 OpSelectionMerge %38 None 102 OpBranchConditional %36 %37 %44 103 %37 = OpLabel 104 OpStore %41 %43 105 OpBranch %38 106 %44 = OpLabel 107 OpStore %41 %45 108 OpBranch %38 109 %38 = OpLabel 110 OpReturn 111 OpFunctionEnd 112END 113 114 115BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 116 117PIPELINE graphics variant_pipeline 118 ATTACH variant_vertex_shader 119 ATTACH variant_fragment_shader 120 FRAMEBUFFER_SIZE 256 256 121 BIND BUFFER variant_framebuffer AS color LOCATION 0 122END 123CLEAR_COLOR variant_pipeline 0 0 0 255 124 125CLEAR variant_pipeline 126RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 127 128EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 129