| // Copyright 2019 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "dawn/native/opengl/OpenGLFunctions.h" |
| |
| #include <cctype> |
| |
| namespace dawn::native::opengl { |
| |
| MaybeError OpenGLFunctions::Initialize(GetProcAddress getProc) { |
| DAWN_TRY(mVersion.Initialize(getProc)); |
| if (mVersion.IsES()) { |
| DAWN_TRY(LoadOpenGLESProcs(getProc, mVersion.GetMajor(), mVersion.GetMinor())); |
| } else { |
| DAWN_TRY(LoadDesktopGLProcs(getProc, mVersion.GetMajor(), mVersion.GetMinor())); |
| } |
| |
| InitializeSupportedGLExtensions(); |
| |
| return {}; |
| } |
| |
| void OpenGLFunctions::InitializeSupportedGLExtensions() { |
| int32_t numExtensions; |
| GetIntegerv(GL_NUM_EXTENSIONS, &numExtensions); |
| |
| for (int32_t i = 0; i < numExtensions; ++i) { |
| const char* extensionName = reinterpret_cast<const char*>(GetStringi(GL_EXTENSIONS, i)); |
| mSupportedGLExtensionsSet.insert(extensionName); |
| } |
| } |
| |
| bool OpenGLFunctions::IsGLExtensionSupported(const char* extension) const { |
| ASSERT(extension != nullptr); |
| return mSupportedGLExtensionsSet.count(extension) != 0; |
| } |
| |
| const OpenGLVersion& OpenGLFunctions::GetVersion() const { |
| return mVersion; |
| } |
| |
| bool OpenGLFunctions::IsAtLeastGL(uint32_t majorVersion, uint32_t minorVersion) const { |
| return mVersion.IsDesktop() && mVersion.IsAtLeast(majorVersion, minorVersion); |
| } |
| |
| bool OpenGLFunctions::IsAtLeastGLES(uint32_t majorVersion, uint32_t minorVersion) const { |
| return mVersion.IsES() && mVersion.IsAtLeast(majorVersion, minorVersion); |
| } |
| |
| } // namespace dawn::native::opengl |