1#!amber 2 3# Copyright 2019 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 const folding rule 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# layout(set = 0, binding = 0) uniform buf0 32# { 33# float fourtytwo; 34# }; 35# 36# void main() 37# { 38# // If condition is always false. 39# if(clamp(1.0, fourtytwo, fourtytwo) > 42.0 40# || clamp(1.0, fourtytwo, fourtytwo) < 42.0) 41# _GLF_color = vec4(0); 42# else 43# _GLF_color = vec4(1, 0, 0, 1); 44# 45# } 46SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 47; SPIR-V 48; Version: 1.0 49; Generator: Khronos Glslang Reference Front End; 8 50; Bound: 41 51; Schema: 0 52 OpCapability Shader 53 %1 = OpExtInstImport "GLSL.std.450" 54 OpMemoryModel Logical GLSL450 55 OpEntryPoint Fragment %4 "main" %36 56 OpExecutionMode %4 OriginUpperLeft 57 OpSource ESSL 310 58 OpName %4 "main" 59 OpName %9 "buf0" 60 OpMemberName %9 0 "fourtytwo" 61 OpName %11 "" 62 OpName %36 "_GLF_color" 63 OpMemberDecorate %9 0 Offset 0 64 OpDecorate %9 Block 65 OpDecorate %11 DescriptorSet 0 66 OpDecorate %11 Binding 0 67 OpDecorate %36 Location 0 68 %2 = OpTypeVoid 69 %3 = OpTypeFunction %2 70 %6 = OpTypeBool 71 %7 = OpTypeFloat 32 72 %8 = OpConstant %7 1 73 %9 = OpTypeStruct %7 74 %10 = OpTypePointer Uniform %9 75 %11 = OpVariable %10 Uniform 76 %12 = OpTypeInt 32 1 77 %13 = OpConstant %12 0 78 %14 = OpTypePointer Uniform %7 79 %20 = OpConstant %7 42 80 %34 = OpTypeVector %7 4 81 %35 = OpTypePointer Output %34 82 %36 = OpVariable %35 Output 83 %37 = OpConstant %7 0 84 %38 = OpConstantComposite %34 %37 %37 %37 %37 85 %40 = OpConstantComposite %34 %8 %37 %37 %8 86 %4 = OpFunction %2 None %3 87 %5 = OpLabel 88 %15 = OpAccessChain %14 %11 %13 89 %16 = OpLoad %7 %15 90 %17 = OpAccessChain %14 %11 %13 91 %18 = OpLoad %7 %17 92 %19 = OpExtInst %7 %1 FClamp %8 %16 %18 93 %21 = OpFOrdGreaterThan %6 %19 %20 94 %22 = OpLogicalNot %6 %21 95 OpSelectionMerge %24 None 96 OpBranchConditional %22 %23 %24 97 %23 = OpLabel 98 %25 = OpAccessChain %14 %11 %13 99 %26 = OpLoad %7 %25 100 %27 = OpAccessChain %14 %11 %13 101 %28 = OpLoad %7 %27 102 %29 = OpExtInst %7 %1 FClamp %8 %26 %28 103 %30 = OpFOrdLessThan %6 %29 %20 104 OpBranch %24 105 %24 = OpLabel 106 %31 = OpPhi %6 %21 %5 %30 %23 107 OpSelectionMerge %33 None 108 OpBranchConditional %31 %32 %39 109 %32 = OpLabel 110 OpStore %36 %38 111 OpBranch %33 112 %39 = OpLabel 113 OpStore %36 %40 114 OpBranch %33 115 %33 = OpLabel 116 OpReturn 117 OpFunctionEnd 118END 119 120# uniforms for variant 121 122# fourtytwo 123BUFFER variant_fourtytwo DATA_TYPE float DATA 124 42.0 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_fourtytwo 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