1 // Copyright 2019 The Dawn Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include <array> 16 17 #include "common/Assert.h" 18 #include "common/BitSetIterator.h" 19 #include "dawn_native/Extensions.h" 20 21 namespace dawn_native { 22 namespace { 23 24 struct ExtensionEnumAndInfo { 25 Extension extension; 26 ExtensionInfo info; 27 bool WGPUDeviceProperties::*memberInWGPUDeviceProperties; 28 }; 29 30 using ExtensionEnumAndInfoList = 31 std::array<ExtensionEnumAndInfo, static_cast<size_t>(Extension::EnumCount)>; 32 33 static constexpr ExtensionEnumAndInfoList kExtensionNameAndInfoList = { 34 {{Extension::TextureCompressionBC, 35 {"texture_compression_bc", "Support Block Compressed (BC) texture formats", 36 "https://bugs.chromium.org/p/dawn/issues/detail?id=42"}, 37 &WGPUDeviceProperties::textureCompressionBC}}}; 38 39 } // anonymous namespace 40 EnableExtension(Extension extension)41 void ExtensionsSet::EnableExtension(Extension extension) { 42 ASSERT(extension != Extension::InvalidEnum); 43 const size_t extensionIndex = static_cast<size_t>(extension); 44 extensionsBitSet.set(extensionIndex); 45 } 46 IsEnabled(Extension extension) const47 bool ExtensionsSet::IsEnabled(Extension extension) const { 48 ASSERT(extension != Extension::InvalidEnum); 49 const size_t extensionIndex = static_cast<size_t>(extension); 50 return extensionsBitSet[extensionIndex]; 51 } 52 GetEnabledExtensionNames() const53 std::vector<const char*> ExtensionsSet::GetEnabledExtensionNames() const { 54 std::vector<const char*> enabledExtensionNames(extensionsBitSet.count()); 55 56 uint32_t index = 0; 57 for (uint32_t i : IterateBitSet(extensionsBitSet)) { 58 const char* extensionName = ExtensionEnumToName(static_cast<Extension>(i)); 59 enabledExtensionNames[index] = extensionName; 60 ++index; 61 } 62 return enabledExtensionNames; 63 } 64 InitializeDeviceProperties(WGPUDeviceProperties * properties) const65 void ExtensionsSet::InitializeDeviceProperties(WGPUDeviceProperties* properties) const { 66 ASSERT(properties != nullptr); 67 68 for (uint32_t i : IterateBitSet(extensionsBitSet)) { 69 properties->*(kExtensionNameAndInfoList[i].memberInWGPUDeviceProperties) = true; 70 } 71 } 72 ExtensionEnumToName(Extension extension)73 const char* ExtensionEnumToName(Extension extension) { 74 ASSERT(extension != Extension::InvalidEnum); 75 76 const ExtensionEnumAndInfo& extensionNameAndInfo = 77 kExtensionNameAndInfoList[static_cast<size_t>(extension)]; 78 ASSERT(extensionNameAndInfo.extension == extension); 79 return extensionNameAndInfo.info.name; 80 } 81 ExtensionsInfo()82 ExtensionsInfo::ExtensionsInfo() { 83 for (size_t index = 0; index < kExtensionNameAndInfoList.size(); ++index) { 84 const ExtensionEnumAndInfo& extensionNameAndInfo = kExtensionNameAndInfoList[index]; 85 ASSERT(index == static_cast<size_t>(extensionNameAndInfo.extension)); 86 mExtensionNameToEnumMap[extensionNameAndInfo.info.name] = 87 extensionNameAndInfo.extension; 88 } 89 } 90 GetExtensionInfo(const char * extensionName) const91 const ExtensionInfo* ExtensionsInfo::GetExtensionInfo(const char* extensionName) const { 92 ASSERT(extensionName); 93 94 const auto& iter = mExtensionNameToEnumMap.find(extensionName); 95 if (iter != mExtensionNameToEnumMap.cend()) { 96 return &kExtensionNameAndInfoList[static_cast<size_t>(iter->second)].info; 97 } 98 return nullptr; 99 } 100 ExtensionNameToEnum(const char * extensionName) const101 Extension ExtensionsInfo::ExtensionNameToEnum(const char* extensionName) const { 102 ASSERT(extensionName); 103 104 const auto& iter = mExtensionNameToEnumMap.find(extensionName); 105 if (iter != mExtensionNameToEnumMap.cend()) { 106 return kExtensionNameAndInfoList[static_cast<size_t>(iter->second)].extension; 107 } 108 return Extension::InvalidEnum; 109 } 110 ExtensionNamesToExtensionsSet(const std::vector<const char * > & requiredExtensions) const111 ExtensionsSet ExtensionsInfo::ExtensionNamesToExtensionsSet( 112 const std::vector<const char*>& requiredExtensions) const { 113 ExtensionsSet extensionsSet; 114 115 for (const char* extensionName : requiredExtensions) { 116 Extension extensionEnum = ExtensionNameToEnum(extensionName); 117 ASSERT(extensionEnum != Extension::InvalidEnum); 118 extensionsSet.EnableExtension(extensionEnum); 119 } 120 return extensionsSet; 121 } 122 123 } // namespace dawn_native 124