The Tor Browser: gfx/skia/trunk/src/gpu/gl/GrGLBufferImpl.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /*

     2  * Copyright 2013 Google Inc.

     3  *

     4  * Use of this source code is governed by a BSD-style license that can be

     5  * found in the LICENSE file.

     6  */

     8 #ifndef GrGLBufferImpl_DEFINED

     9 #define GrGLBufferImpl_DEFINED

    11 #include "SkTypes.h"

    12 #include "gl/GrGLFunctions.h"

    14 class GrGpuGL;

    16 /**

    17  * This class serves as the implementation of GrGL*Buffer classes. It was written to avoid code

    18  * duplication in those classes.

    19  */

    20 class GrGLBufferImpl : public SkNoncopyable {

    21 public:

    22     struct Desc {

    23         bool        fIsWrapped;

    24         GrGLuint    fID;            // set to 0 to indicate buffer is CPU-backed and not a VBO.

    25         size_t      fSizeInBytes;

    26         bool        fDynamic;

    27     };

    29     GrGLBufferImpl(GrGpuGL*, const Desc&, GrGLenum bufferType);

    30     ~GrGLBufferImpl() {

    31         // either release or abandon should have been called by the owner of this object.

    32         SkASSERT(0 == fDesc.fID);

    33     }

    35     void abandon();

    36     void release(GrGpuGL* gpu);

    38     GrGLuint bufferID() const { return fDesc.fID; }

    39     size_t baseOffset() const { return reinterpret_cast<size_t>(fCPUData); }

    41     void bind(GrGpuGL* gpu) const;

    43     void* lock(GrGpuGL* gpu);

    44     void* lockPtr() const { return fLockPtr; }

    45     void unlock(GrGpuGL* gpu);

    46     bool isLocked() const;

    47     bool updateData(GrGpuGL* gpu, const void* src, size_t srcSizeInBytes);

    49 private:

    50     void validate() const;

    52     Desc         fDesc;

    53     GrGLenum     fBufferType; // GL_ARRAY_BUFFER or GL_ELEMENT_ARRAY_BUFFER

    54     void*        fCPUData;

    55     void*        fLockPtr;

    57     typedef SkNoncopyable INHERITED;

    58 };

    60 #endif

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