1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/gpu/gl/GrGLBufferImpl.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,60 @@
1.4 +/*
1.5 + * Copyright 2013 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef GrGLBufferImpl_DEFINED
1.12 +#define GrGLBufferImpl_DEFINED
1.13 +
1.14 +#include "SkTypes.h"
1.15 +#include "gl/GrGLFunctions.h"
1.16 +
1.17 +class GrGpuGL;
1.18 +
1.19 +/**
1.20 + * This class serves as the implementation of GrGL*Buffer classes. It was written to avoid code
1.21 + * duplication in those classes.
1.22 + */
1.23 +class GrGLBufferImpl : public SkNoncopyable {
1.24 +public:
1.25 + struct Desc {
1.26 + bool fIsWrapped;
1.27 + GrGLuint fID; // set to 0 to indicate buffer is CPU-backed and not a VBO.
1.28 + size_t fSizeInBytes;
1.29 + bool fDynamic;
1.30 + };
1.31 +
1.32 + GrGLBufferImpl(GrGpuGL*, const Desc&, GrGLenum bufferType);
1.33 + ~GrGLBufferImpl() {
1.34 + // either release or abandon should have been called by the owner of this object.
1.35 + SkASSERT(0 == fDesc.fID);
1.36 + }
1.37 +
1.38 + void abandon();
1.39 + void release(GrGpuGL* gpu);
1.40 +
1.41 + GrGLuint bufferID() const { return fDesc.fID; }
1.42 + size_t baseOffset() const { return reinterpret_cast<size_t>(fCPUData); }
1.43 +
1.44 + void bind(GrGpuGL* gpu) const;
1.45 +
1.46 + void* lock(GrGpuGL* gpu);
1.47 + void* lockPtr() const { return fLockPtr; }
1.48 + void unlock(GrGpuGL* gpu);
1.49 + bool isLocked() const;
1.50 + bool updateData(GrGpuGL* gpu, const void* src, size_t srcSizeInBytes);
1.51 +
1.52 +private:
1.53 + void validate() const;
1.54 +
1.55 + Desc fDesc;
1.56 + GrGLenum fBufferType; // GL_ARRAY_BUFFER or GL_ELEMENT_ARRAY_BUFFER
1.57 + void* fCPUData;
1.58 + void* fLockPtr;
1.59 +
1.60 + typedef SkNoncopyable INHERITED;
1.61 +};
1.62 +
1.63 +#endif
