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 inlining optimization 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# 29# precision highp float; 30# precision highp int; 31# 32# layout(location = 0) out vec4 _GLF_color; 33# 34# float func() 35# { 36# for (int i = 0; i < 10; ++i) 37# { 38# if (i > 5) 39# ++i; 40# 41# if (i > 8) 42# return 0.0; 43# } 44# 45# return 1.0; 46# } 47# 48# void main() 49# { 50# if (false) 51# { 52# _GLF_color = vec4(func()); 53# } 54# else 55# { 56# _GLF_color = vec4(1, 0, 0, 1); 57# } 58# } 59SHADER fragment variant_fragment_shader SPIRV-ASM 60; SPIR-V 61; Version: 1.0 62; Generator: Khronos Glslang Reference Front End; 8 63; Bound: 53 64; Schema: 0 65 OpCapability Shader 66 %1 = OpExtInstImport "GLSL.std.450" 67 OpMemoryModel Logical GLSL450 68 OpEntryPoint Fragment %4 "main" %48 69 OpExecutionMode %4 OriginUpperLeft 70 OpSource ESSL 310 71 OpName %4 "main" 72 OpName %8 "func(" 73 OpName %12 "i" 74 OpName %48 "_GLF_color" 75 OpDecorate %48 Location 0 76 %2 = OpTypeVoid 77 %3 = OpTypeFunction %2 78 %6 = OpTypeFloat 32 79 %7 = OpTypeFunction %6 80 %10 = OpTypeInt 32 1 81 %11 = OpTypePointer Function %10 82 %13 = OpConstant %10 0 83 %20 = OpConstant %10 10 84 %21 = OpTypeBool 85 %24 = OpConstant %10 5 86 %29 = OpConstant %10 1 87 %32 = OpConstant %10 8 88 %36 = OpConstant %6 0 89 %40 = OpConstant %6 1 90 %43 = OpConstantFalse %21 91 %46 = OpTypeVector %6 4 92 %47 = OpTypePointer Output %46 93 %48 = OpVariable %47 Output 94 %52 = OpConstantComposite %46 %40 %36 %36 %40 95 %4 = OpFunction %2 None %3 96 %5 = OpLabel 97 OpSelectionMerge %45 None 98 OpBranchConditional %43 %44 %51 99 %44 = OpLabel 100 %49 = OpFunctionCall %6 %8 101 %50 = OpCompositeConstruct %46 %49 %49 %49 %49 102 OpStore %48 %50 103 OpBranch %45 104 %51 = OpLabel 105 OpStore %48 %52 106 OpBranch %45 107 %45 = OpLabel 108 OpReturn 109 OpFunctionEnd 110 %8 = OpFunction %6 None %7 111 %9 = OpLabel 112 %12 = OpVariable %11 Function 113 OpStore %12 %13 114 OpBranch %14 115 %14 = OpLabel 116 OpLoopMerge %16 %17 None 117 OpBranch %18 118 %18 = OpLabel 119 %19 = OpLoad %10 %12 120 %22 = OpSLessThan %21 %19 %20 121 OpBranchConditional %22 %15 %16 122 %15 = OpLabel 123 %23 = OpLoad %10 %12 124 %25 = OpSGreaterThan %21 %23 %24 125 OpSelectionMerge %27 None 126 OpBranchConditional %25 %26 %27 127 %26 = OpLabel 128 %28 = OpLoad %10 %12 129 %30 = OpIAdd %10 %28 %29 130 OpStore %12 %30 131 OpBranch %27 132 %27 = OpLabel 133 %31 = OpLoad %10 %12 134 %33 = OpSGreaterThan %21 %31 %32 135 OpSelectionMerge %35 None 136 OpBranchConditional %33 %34 %35 137 %34 = OpLabel 138 OpReturnValue %36 139 %35 = OpLabel 140 OpBranch %17 141 %17 = OpLabel 142 %38 = OpLoad %10 %12 143 %39 = OpIAdd %10 %38 %29 144 OpStore %12 %39 145 OpBranch %14 146 %16 = OpLabel 147 OpReturnValue %40 148 OpFunctionEnd 149END 150 151 152BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 153 154PIPELINE graphics variant_pipeline 155 ATTACH variant_vertex_shader 156 ATTACH variant_fragment_shader 157 FRAMEBUFFER_SIZE 256 256 158 BIND BUFFER variant_framebuffer AS color LOCATION 0 159END 160CLEAR_COLOR variant_pipeline 0 0 0 255 161 162CLEAR variant_pipeline 163RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 164 165EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 166