// Copyright 2016 The SwiftShader Authors. All Rights Reserved. // // 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. // IndexDataManager.h: Defines the IndexDataManager, a class that // runs the Buffer translation process for index buffers. #ifndef LIBGL_INDEXDATAMANAGER_H_ #define LIBGL_INDEXDATAMANAGER_H_ #include "Context.h" #define _GDI32_ #include <windows.h> #include <GL/GL.h> #include <GL/glext.h> namespace gl { struct TranslatedIndexData { unsigned int minIndex; unsigned int maxIndex; unsigned int indexOffset; sw::Resource *indexBuffer; }; class StreamingIndexBuffer { public: StreamingIndexBuffer(unsigned int initialSize); virtual ~StreamingIndexBuffer(); void *map(unsigned int requiredSpace, unsigned int *offset); void unmap(); void reserveSpace(unsigned int requiredSpace, GLenum type); sw::Resource *getResource() const; private: sw::Resource *mIndexBuffer; unsigned int mBufferSize; unsigned int mWritePosition; }; class IndexDataManager { public: IndexDataManager(); virtual ~IndexDataManager(); GLenum prepareIndexData(GLenum type, GLsizei count, Buffer *arrayElementBuffer, const void *indices, TranslatedIndexData *translated); static std::size_t typeSize(GLenum type); private: StreamingIndexBuffer *mStreamingBuffer; }; } #endif // LIBGL_INDEXDATAMANAGER_H_