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Diffstat (limited to 'src/3rdparty/angle/src/libGLESv2/IndexDataManager.h')
-rw-r--r-- | src/3rdparty/angle/src/libGLESv2/IndexDataManager.h | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libGLESv2/IndexDataManager.h b/src/3rdparty/angle/src/libGLESv2/IndexDataManager.h new file mode 100644 index 0000000000..c1d4168315 --- /dev/null +++ b/src/3rdparty/angle/src/libGLESv2/IndexDataManager.h @@ -0,0 +1,149 @@ +// +// Copyright (c) 2002-2012 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 +{ + enum { INITIAL_INDEX_BUFFER_SIZE = 4096 * sizeof(GLuint) }; +} + +namespace gl +{ + +struct TranslatedIndexData +{ + UINT minIndex; + UINT maxIndex; + UINT startIndex; + + IDirect3DIndexBuffer9 *indexBuffer; + unsigned int serial; +}; + +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; + unsigned int getSerial() const; + + protected: + IDirect3DDevice9 *const mDevice; + + IDirect3DIndexBuffer9 *mIndexBuffer; + UINT mBufferSize; + + unsigned int mSerial; + static unsigned int issueSerial(); + static unsigned int mCurrentSerial; + + 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; + + bool operator<(const IndexRange& rhs) const + { + if (offset != rhs.offset) + { + return offset < rhs.offset; + } + if (count != rhs.count) + { + return count < rhs.count; + } + return false; + } + }; + + struct IndexResult + { + UINT minIndex; + UINT maxIndex; + UINT streamOffset; + }; + + std::map<IndexRange, IndexResult> mCache; +}; + +class IndexDataManager +{ + public: + IndexDataManager(Context *context, IDirect3DDevice9 *evice); + virtual ~IndexDataManager(); + + GLenum prepareIndexData(GLenum type, GLsizei count, Buffer *arrayElementBuffer, const GLvoid *indices, TranslatedIndexData *translated); + StaticIndexBuffer *getCountingIndices(GLsizei count); + + 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; + StaticIndexBuffer *mCountingBuffer; +}; + +} + +#endif // LIBGLESV2_INDEXDATAMANAGER_H_ |