1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/libGLESv2/renderer/IndexBuffer.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,111 @@
1.4 +//
1.5 +// Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
1.6 +// Use of this source code is governed by a BSD-style license that can be
1.7 +// found in the LICENSE file.
1.8 +//
1.9 +
1.10 +// IndexBuffer.h: Defines the abstract IndexBuffer class and IndexBufferInterface
1.11 +// class with derivations, classes that perform graphics API agnostic index buffer operations.
1.12 +
1.13 +#ifndef LIBGLESV2_RENDERER_INDEXBUFFER_H_
1.14 +#define LIBGLESV2_RENDERER_INDEXBUFFER_H_
1.15 +
1.16 +#include "common/angleutils.h"
1.17 +#include "libGLESv2/renderer/IndexRangeCache.h"
1.18 +
1.19 +namespace rx
1.20 +{
1.21 +class Renderer;
1.22 +
1.23 +class IndexBuffer
1.24 +{
1.25 + public:
1.26 + IndexBuffer();
1.27 + virtual ~IndexBuffer();
1.28 +
1.29 + virtual bool initialize(unsigned int bufferSize, GLenum indexType, bool dynamic) = 0;
1.30 +
1.31 + virtual bool mapBuffer(unsigned int offset, unsigned int size, void** outMappedMemory) = 0;
1.32 + virtual bool unmapBuffer() = 0;
1.33 +
1.34 + virtual bool discard() = 0;
1.35 +
1.36 + virtual GLenum getIndexType() const = 0;
1.37 + virtual unsigned int getBufferSize() const = 0;
1.38 + virtual bool setSize(unsigned int bufferSize, GLenum indexType) = 0;
1.39 +
1.40 + unsigned int getSerial() const;
1.41 +
1.42 + protected:
1.43 + void updateSerial();
1.44 +
1.45 + private:
1.46 + DISALLOW_COPY_AND_ASSIGN(IndexBuffer);
1.47 +
1.48 + unsigned int mSerial;
1.49 + static unsigned int mNextSerial;
1.50 +};
1.51 +
1.52 +class IndexBufferInterface
1.53 +{
1.54 + public:
1.55 + IndexBufferInterface(Renderer *renderer, bool dynamic);
1.56 + virtual ~IndexBufferInterface();
1.57 +
1.58 + virtual bool reserveBufferSpace(unsigned int size, GLenum indexType) = 0;
1.59 +
1.60 + GLenum getIndexType() const;
1.61 + unsigned int getBufferSize() const;
1.62 +
1.63 + unsigned int getSerial() const;
1.64 +
1.65 + bool mapBuffer(unsigned int size, void** outMappedMemory, unsigned int *streamOffset);
1.66 + bool unmapBuffer();
1.67 +
1.68 + IndexBuffer *getIndexBuffer() const;
1.69 +
1.70 + protected:
1.71 + unsigned int getWritePosition() const;
1.72 + void setWritePosition(unsigned int writePosition);
1.73 +
1.74 + bool discard();
1.75 +
1.76 + bool setBufferSize(unsigned int bufferSize, GLenum indexType);
1.77 +
1.78 + private:
1.79 + DISALLOW_COPY_AND_ASSIGN(IndexBufferInterface);
1.80 +
1.81 + rx::Renderer *const mRenderer;
1.82 +
1.83 + IndexBuffer* mIndexBuffer;
1.84 +
1.85 + unsigned int mWritePosition;
1.86 + bool mDynamic;
1.87 +};
1.88 +
1.89 +class StreamingIndexBufferInterface : public IndexBufferInterface
1.90 +{
1.91 + public:
1.92 + StreamingIndexBufferInterface(Renderer *renderer);
1.93 + ~StreamingIndexBufferInterface();
1.94 +
1.95 + virtual bool reserveBufferSpace(unsigned int size, GLenum indexType);
1.96 +};
1.97 +
1.98 +class StaticIndexBufferInterface : public IndexBufferInterface
1.99 +{
1.100 + public:
1.101 + explicit StaticIndexBufferInterface(Renderer *renderer);
1.102 + ~StaticIndexBufferInterface();
1.103 +
1.104 + virtual bool reserveBufferSpace(unsigned int size, GLenum indexType);
1.105 +
1.106 + IndexRangeCache *getIndexRangeCache();
1.107 +
1.108 + private:
1.109 + IndexRangeCache mIndexRangeCache;
1.110 +};
1.111 +
1.112 +}
1.113 +
1.114 +#endif // LIBGLESV2_RENDERER_INDEXBUFFER_H_
1.115 \ No newline at end of file
