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 instruction folding 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(set = 0, binding = 0) uniform buf0 31# { 32# vec2 injectionSwitch; 33# }; 34# layout(location = 0) out vec4 _GLF_color; 35# 36# void main() 37# { 38# // Always true. 39# if(mix(injectionSwitch, vec2(1), bvec2(false)).x == 0.0) 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: 36 49; Schema: 0 50 OpCapability Shader 51 %1 = OpExtInstImport "GLSL.std.450" 52 OpMemoryModel Logical GLSL450 53 OpEntryPoint Fragment %4 "main" %32 54 OpExecutionMode %4 OriginUpperLeft 55 OpSource ESSL 310 56 OpName %4 "main" 57 OpName %8 "buf0" 58 OpMemberName %8 0 "injectionSwitch" 59 OpName %10 "" 60 OpName %32 "_GLF_color" 61 OpMemberDecorate %8 0 Offset 0 62 OpDecorate %8 Block 63 OpDecorate %10 DescriptorSet 0 64 OpDecorate %10 Binding 0 65 OpDecorate %32 Location 0 66 %2 = OpTypeVoid 67 %3 = OpTypeFunction %2 68 %6 = OpTypeFloat 32 69 %7 = OpTypeVector %6 2 70 %8 = OpTypeStruct %7 71 %9 = OpTypePointer Uniform %8 72 %10 = OpVariable %9 Uniform 73 %11 = OpTypeInt 32 1 74 %12 = OpConstant %11 0 75 %13 = OpTypePointer Uniform %7 76 %16 = OpConstant %6 1 77 %17 = OpConstantComposite %7 %16 %16 78 %18 = OpTypeBool 79 %19 = OpTypeVector %18 2 80 %20 = OpConstantFalse %18 81 %21 = OpConstantComposite %19 %20 %20 82 %23 = OpTypeInt 32 0 83 %24 = OpConstant %23 0 84 %26 = OpConstant %6 0 85 %30 = OpTypeVector %6 4 86 %31 = OpTypePointer Output %30 87 %32 = OpVariable %31 Output 88 %33 = OpConstantComposite %30 %16 %26 %26 %16 89 %35 = OpConstantComposite %30 %26 %26 %26 %26 90 %4 = OpFunction %2 None %3 91 %5 = OpLabel 92 %14 = OpAccessChain %13 %10 %12 93 %15 = OpLoad %7 %14 94 %22 = OpSelect %7 %21 %17 %15 95 %25 = OpCompositeExtract %6 %22 0 96 %27 = OpFOrdEqual %18 %25 %26 97 OpSelectionMerge %29 None 98 OpBranchConditional %27 %28 %34 99 %28 = OpLabel 100 OpStore %32 %33 101 OpBranch %29 102 %34 = OpLabel 103 OpStore %32 %35 104 OpBranch %29 105 %29 = OpLabel 106 OpReturn 107 OpFunctionEnd 108END 109 110# uniforms for variant 111 112# injectionSwitch 113BUFFER variant_injectionSwitch DATA_TYPE vec2<float> DATA 114 0.0 1.0 115END 116 117BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM 118 119PIPELINE graphics variant_pipeline 120 ATTACH variant_vertex_shader 121 ATTACH variant_fragment_shader 122 FRAMEBUFFER_SIZE 256 256 123 BIND BUFFER variant_framebuffer AS color LOCATION 0 124 BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 0 125END 126CLEAR_COLOR variant_pipeline 0 0 0 255 127 128CLEAR variant_pipeline 129RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 130 131EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 132