1 // Copyright 2017 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_BUFFERGL_H_ 16 #define DAWNNATIVE_OPENGL_BUFFERGL_H_ 17 18 #include "dawn_native/Buffer.h" 19 20 #include "dawn_native/opengl/opengl_platform.h" 21 22 namespace dawn_native { namespace opengl { 23 24 class Device; 25 26 class Buffer final : public BufferBase { 27 public: 28 static ResultOrError<Ref<Buffer>> CreateInternalBuffer(Device* device, 29 const BufferDescriptor* descriptor, 30 bool shouldLazyClear); 31 32 Buffer(Device* device, const BufferDescriptor* descriptor); 33 34 GLuint GetHandle() const; 35 36 bool EnsureDataInitialized(); 37 bool EnsureDataInitializedAsDestination(uint64_t offset, uint64_t size); 38 bool EnsureDataInitializedAsDestination(const CopyTextureToBufferCmd* copy); 39 40 private: 41 Buffer(Device* device, const BufferDescriptor* descriptor, bool shouldLazyClear); 42 ~Buffer() override; 43 MaybeError MapAsyncImpl(wgpu::MapMode mode, size_t offset, size_t size) override; 44 void UnmapImpl() override; 45 void DestroyImpl() override; 46 bool IsCPUWritableAtCreation() const override; 47 MaybeError MapAtCreationImpl() override; 48 void* GetMappedPointerImpl() override; 49 50 void InitializeToZero(); 51 52 GLuint mBuffer = 0; 53 void* mMappedData = nullptr; 54 }; 55 56 }} // namespace dawn_native::opengl 57 58 #endif // DAWNNATIVE_OPENGL_BUFFERGL_H_ 59