The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/angle/src/libGLESv2/Buffer.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,126 @@
     1.4 +#include "precompiled.h"
     1.5 +//
     1.6 +// Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
     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 +// Buffer.cpp: Implements the gl::Buffer class, representing storage of vertex and/or
    1.12 +// index data. Implements GL buffer objects and related functionality.
    1.13 +// [OpenGL ES 2.0.24] section 2.9 page 21.
    1.14 +
    1.15 +#include "libGLESv2/Buffer.h"
    1.16 +
    1.17 +#include "libGLESv2/renderer/VertexBuffer.h"
    1.18 +#include "libGLESv2/renderer/IndexBuffer.h"
    1.19 +#include "libGLESv2/renderer/BufferStorage.h"
    1.20 +#include "libGLESv2/renderer/Renderer.h"
    1.21 +
    1.22 +namespace gl
    1.23 +{
    1.24 +
    1.25 +Buffer::Buffer(rx::Renderer *renderer, GLuint id) : RefCountObject(id)
    1.26 +{
    1.27 +    mRenderer = renderer;
    1.28 +    mUsage = GL_DYNAMIC_DRAW;
    1.29 +
    1.30 +    mBufferStorage = renderer->createBufferStorage();
    1.31 +    mStaticVertexBuffer = NULL;
    1.32 +    mStaticIndexBuffer = NULL;
    1.33 +    mUnmodifiedDataUse = 0;
    1.34 +}
    1.35 +
    1.36 +Buffer::~Buffer()
    1.37 +{
    1.38 +    delete mBufferStorage;
    1.39 +    delete mStaticVertexBuffer;
    1.40 +    delete mStaticIndexBuffer;
    1.41 +}
    1.42 +
    1.43 +void Buffer::bufferData(const void *data, GLsizeiptr size, GLenum usage)
    1.44 +{
    1.45 +    mBufferStorage->clear();
    1.46 +    mIndexRangeCache.clear();
    1.47 +    mBufferStorage->setData(data, size, 0);
    1.48 +
    1.49 +    mUsage = usage;
    1.50 +
    1.51 +    invalidateStaticData();
    1.52 +
    1.53 +    if (usage == GL_STATIC_DRAW)
    1.54 +    {
    1.55 +        mStaticVertexBuffer = new rx::StaticVertexBufferInterface(mRenderer);
    1.56 +        mStaticIndexBuffer = new rx::StaticIndexBufferInterface(mRenderer);
    1.57 +    }
    1.58 +}
    1.59 +
    1.60 +void Buffer::bufferSubData(const void *data, GLsizeiptr size, GLintptr offset)
    1.61 +{
    1.62 +    mBufferStorage->setData(data, size, offset);
    1.63 +    mIndexRangeCache.invalidateRange(offset, size);
    1.64 +
    1.65 +    if ((mStaticVertexBuffer && mStaticVertexBuffer->getBufferSize() != 0) || (mStaticIndexBuffer && mStaticIndexBuffer->getBufferSize() != 0))
    1.66 +    {
    1.67 +        invalidateStaticData();
    1.68 +    }
    1.69 +
    1.70 +    mUnmodifiedDataUse = 0;
    1.71 +}
    1.72 +
    1.73 +rx::BufferStorage *Buffer::getStorage() const
    1.74 +{
    1.75 +    return mBufferStorage;
    1.76 +}
    1.77 +
    1.78 +unsigned int Buffer::size()
    1.79 +{
    1.80 +    return mBufferStorage->getSize();
    1.81 +}
    1.82 +
    1.83 +GLenum Buffer::usage() const
    1.84 +{
    1.85 +    return mUsage;
    1.86 +}
    1.87 +
    1.88 +rx::StaticVertexBufferInterface *Buffer::getStaticVertexBuffer()
    1.89 +{
    1.90 +    return mStaticVertexBuffer;
    1.91 +}
    1.92 +
    1.93 +rx::StaticIndexBufferInterface *Buffer::getStaticIndexBuffer()
    1.94 +{
    1.95 +    return mStaticIndexBuffer;
    1.96 +}
    1.97 +
    1.98 +void Buffer::invalidateStaticData()
    1.99 +{
   1.100 +    delete mStaticVertexBuffer;
   1.101 +    mStaticVertexBuffer = NULL;
   1.102 +
   1.103 +    delete mStaticIndexBuffer;
   1.104 +    mStaticIndexBuffer = NULL;
   1.105 +
   1.106 +    mUnmodifiedDataUse = 0;
   1.107 +}
   1.108 +
   1.109 +// Creates static buffers if sufficient used data has been left unmodified
   1.110 +void Buffer::promoteStaticUsage(int dataSize)
   1.111 +{
   1.112 +    if (!mStaticVertexBuffer && !mStaticIndexBuffer)
   1.113 +    {
   1.114 +        mUnmodifiedDataUse += dataSize;
   1.115 +
   1.116 +        if (mUnmodifiedDataUse > 3 * mBufferStorage->getSize())
   1.117 +        {
   1.118 +            mStaticVertexBuffer = new rx::StaticVertexBufferInterface(mRenderer);
   1.119 +            mStaticIndexBuffer = new rx::StaticIndexBufferInterface(mRenderer);
   1.120 +        }
   1.121 +    }
   1.122 +}
   1.123 +
   1.124 +rx::IndexRangeCache *Buffer::getIndexRangeCache()
   1.125 +{
   1.126 +    return &mIndexRangeCache;
   1.127 +}
   1.128 +
   1.129 +}