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 #ifndef DAWNNATIVE_OPENGL_OPENGLFUNCTIONS_H_
16 #define DAWNNATIVE_OPENGL_OPENGLFUNCTIONS_H_
17 
18 #include <unordered_set>
19 
20 #include "dawn_native/opengl/OpenGLFunctionsBase_autogen.h"
21 
22 namespace dawn_native { namespace opengl {
23 
24     struct OpenGLFunctions : OpenGLFunctionsBase {
25       public:
26         MaybeError Initialize(GetProcAddress getProc);
27 
28         bool IsAtLeastGL(uint32_t majorVersion, uint32_t minorVersion) const;
29         bool IsAtLeastGLES(uint32_t majorVersion, uint32_t minorVersion) const;
30 
31         bool IsGLExtensionSupported(const char* extension) const;
32 
33       private:
34         void InitializeSupportedGLExtensions();
35 
36         uint32_t mMajorVersion;
37         uint32_t mMinorVersion;
38 
39         enum class Standard {
40             Desktop,
41             ES,
42         };
43         Standard mStandard;
44 
45         std::unordered_set<std::string> mSupportedGLExtensionsSet;
46     };
47 
48 }}  // namespace dawn_native::opengl
49 
50 #endif  // DAWNNATIVE_OPENGL_OPENGLFUNCTIONS_H_
51