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 arbitrary precision float usage. 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# void main() 33# { 34# vec4 v = vec4(1, 2, 3, 4); 35# float dist1 = distance(tanh(v), sinh(v) / cosh(v)); 36# float dist2 = distance(tanh(v), vec4(0.76159, 0.96403, 0.99505, 0.99933)); 37# 38# // tanh(v) == sinh(v) / cosh(v). Allow some room for precision errors. 39# if (dist1 < 0.1 && dist2 < 0.1) 40# _GLF_color = vec4(1, 0, 0, 1); 41# else 42# _GLF_color = vec4(0); 43# } 44SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 45; SPIR-V 46; Version: 1.0 47; Generator: Khronos Glslang Reference Front End; 8 48; Bound: 49 49; Schema: 0 50 OpCapability Shader 51 %1 = OpExtInstImport "GLSL.std.450" 52 OpMemoryModel Logical GLSL450 53 OpEntryPoint Fragment %4 "main" %44 54 OpExecutionMode %4 OriginUpperLeft 55 OpSource ESSL 310 56 OpName %4 "main" 57 OpName %9 "v" 58 OpName %16 "dist1" 59 OpName %25 "dist2" 60 OpName %44 "_GLF_color" 61 OpDecorate %44 Location 0 62 %2 = OpTypeVoid 63 %3 = OpTypeFunction %2 64 %6 = OpTypeFloat 32 65 %7 = OpTypeVector %6 4 66 %8 = OpTypePointer Function %7 67 %10 = OpConstant %6 1 68 %11 = OpConstant %6 2 69 %12 = OpConstant %6 3 70 %13 = OpConstant %6 4 71 %14 = OpConstantComposite %7 %10 %11 %12 %13 72 %15 = OpTypePointer Function %6 73 %28 = OpConstant %6 0.761590004 74 %29 = OpConstant %6 0.964030027 75 %30 = OpConstant %6 0.995050013 76 %31 = OpConstant %6 0.999329984 77 %32 = OpConstantComposite %7 %28 %29 %30 %31 78 %35 = OpConstant %6 0.100000001 79 %36 = OpTypeBool 80 %43 = OpTypePointer Output %7 81 %44 = OpVariable %43 Output 82 %45 = OpConstant %6 0 83 %46 = OpConstantComposite %7 %10 %45 %45 %10 84 %48 = OpConstantComposite %7 %45 %45 %45 %45 85 %4 = OpFunction %2 None %3 86 %5 = OpLabel 87 %9 = OpVariable %8 Function 88 %16 = OpVariable %15 Function 89 %25 = OpVariable %15 Function 90 OpStore %9 %14 91 %17 = OpLoad %7 %9 92 %18 = OpExtInst %7 %1 Tanh %17 93 %19 = OpLoad %7 %9 94 %20 = OpExtInst %7 %1 Sinh %19 95 %21 = OpLoad %7 %9 96 %22 = OpExtInst %7 %1 Cosh %21 97 %23 = OpFDiv %7 %20 %22 98 %24 = OpExtInst %6 %1 Distance %18 %23 99 OpStore %16 %24 100 %26 = OpLoad %7 %9 101 %27 = OpExtInst %7 %1 Tanh %26 102 %33 = OpExtInst %6 %1 Distance %27 %32 103 OpStore %25 %33 104 %34 = OpLoad %6 %16 105 %37 = OpFOrdLessThan %36 %34 %35 106 %38 = OpLoad %6 %25 107 %39 = OpFOrdLessThan %36 %38 %35 108 %40 = OpLogicalAnd %36 %37 %39 109 OpSelectionMerge %42 None 110 OpBranchConditional %40 %41 %47 111 %41 = OpLabel 112 OpStore %44 %46 113 OpBranch %42 114 %47 = OpLabel 115 OpStore %44 %48 116 OpBranch %42 117 %42 = OpLabel 118 OpReturn 119 OpFunctionEnd 120END 121 122 123BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 124 125PIPELINE graphics variant_pipeline 126 ATTACH variant_vertex_shader 127 ATTACH variant_fragment_shader 128 FRAMEBUFFER_SIZE 256 256 129 BIND BUFFER variant_framebuffer AS color LOCATION 0 130END 131CLEAR_COLOR variant_pipeline 0 0 0 255 132 133CLEAR variant_pipeline 134RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 135 136EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 137