| // |
| // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| // IndexDataManager.h: Defines the IndexDataManager, a class that |
| // runs the Buffer translation process for index buffers. |
| |
| #ifndef LIBGLESV2_INDEXDATAMANAGER_H_ |
| #define LIBGLESV2_INDEXDATAMANAGER_H_ |
| |
| #include <vector> |
| #include <cstddef> |
| |
| #define GL_APICALL |
| #include <GLES2/gl2.h> |
| |
| #include "libGLESv2/Context.h" |
| |
| namespace gl |
| { |
| |
| struct TranslatedIndexData |
| { |
| UINT minIndex; |
| UINT maxIndex; |
| UINT startIndex; |
| |
| IDirect3DIndexBuffer9 *indexBuffer; |
| }; |
| |
| class IndexBuffer |
| { |
| public: |
| IndexBuffer(IDirect3DDevice9 *device, UINT size, D3DFORMAT format); |
| virtual ~IndexBuffer(); |
| |
| UINT size() const { return mBufferSize; } |
| virtual void *map(UINT requiredSpace, UINT *offset) = 0; |
| void unmap(); |
| virtual void reserveSpace(UINT requiredSpace, GLenum type) = 0; |
| |
| IDirect3DIndexBuffer9 *getBuffer() const; |
| |
| protected: |
| IDirect3DDevice9 *const mDevice; |
| |
| IDirect3DIndexBuffer9 *mIndexBuffer; |
| UINT mBufferSize; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(IndexBuffer); |
| }; |
| |
| class StreamingIndexBuffer : public IndexBuffer |
| { |
| public: |
| StreamingIndexBuffer(IDirect3DDevice9 *device, UINT initialSize, D3DFORMAT format); |
| ~StreamingIndexBuffer(); |
| |
| virtual void *map(UINT requiredSpace, UINT *offset); |
| virtual void reserveSpace(UINT requiredSpace, GLenum type); |
| |
| private: |
| UINT mWritePosition; |
| }; |
| |
| class StaticIndexBuffer : public IndexBuffer |
| { |
| public: |
| explicit StaticIndexBuffer(IDirect3DDevice9 *device); |
| ~StaticIndexBuffer(); |
| |
| virtual void *map(UINT requiredSpace, UINT *offset); |
| virtual void reserveSpace(UINT requiredSpace, GLenum type); |
| |
| bool lookupType(GLenum type); |
| UINT lookupRange(intptr_t offset, GLsizei count, UINT *minIndex, UINT *maxIndex); // Returns the offset into the index buffer, or -1 if not found |
| void addRange(intptr_t offset, GLsizei count, UINT minIndex, UINT maxIndex, UINT streamOffset); |
| |
| private: |
| GLenum mCacheType; |
| |
| struct IndexRange |
| { |
| intptr_t offset; |
| GLsizei count; |
| |
| UINT minIndex; |
| UINT maxIndex; |
| UINT streamOffset; |
| }; |
| |
| std::vector<IndexRange> mCache; |
| }; |
| |
| class IndexDataManager |
| { |
| public: |
| IndexDataManager(Context *context, IDirect3DDevice9 *evice); |
| virtual ~IndexDataManager(); |
| |
| GLenum prepareIndexData(GLenum type, GLsizei count, Buffer *arrayElementBuffer, const void *indices, TranslatedIndexData *translated); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(IndexDataManager); |
| |
| std::size_t typeSize(GLenum type) const; |
| std::size_t indexSize(D3DFORMAT format) const; |
| |
| IDirect3DDevice9 *const mDevice; |
| |
| StreamingIndexBuffer *mStreamingBufferShort; |
| StreamingIndexBuffer *mStreamingBufferInt; |
| }; |
| |
| } |
| |
| #endif // LIBGLESV2_INDEXDATAMANAGER_H_ |