The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/angle/src/libGLESv2/HandleAllocator.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,64 @@
     1.4 +#include "precompiled.h"
     1.5 +//
     1.6 +// Copyright (c) 2002-2011 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 +// HandleAllocator.cpp: Implements the gl::HandleAllocator class, which is used
    1.12 +// to allocate GL handles.
    1.13 +
    1.14 +#include "libGLESv2/HandleAllocator.h"
    1.15 +
    1.16 +#include "libGLESv2/main.h"
    1.17 +
    1.18 +namespace gl
    1.19 +{
    1.20 +
    1.21 +HandleAllocator::HandleAllocator() : mBaseValue(1), mNextValue(1)
    1.22 +{
    1.23 +}
    1.24 +
    1.25 +HandleAllocator::~HandleAllocator()
    1.26 +{
    1.27 +}
    1.28 +
    1.29 +void HandleAllocator::setBaseHandle(GLuint value)
    1.30 +{
    1.31 +    ASSERT(mBaseValue == mNextValue);
    1.32 +    mBaseValue = value;
    1.33 +    mNextValue = value;
    1.34 +}
    1.35 +
    1.36 +GLuint HandleAllocator::allocate()
    1.37 +{
    1.38 +    if (mFreeValues.size())
    1.39 +    {
    1.40 +        GLuint handle = mFreeValues.back();
    1.41 +        mFreeValues.pop_back();
    1.42 +        return handle;
    1.43 +    }
    1.44 +    return mNextValue++;
    1.45 +}
    1.46 +
    1.47 +void HandleAllocator::release(GLuint handle)
    1.48 +{
    1.49 +    if (handle == mNextValue - 1)
    1.50 +    {
    1.51 +        // Don't drop below base value
    1.52 +        if(mNextValue > mBaseValue)
    1.53 +        {
    1.54 +            mNextValue--;
    1.55 +        }
    1.56 +    }
    1.57 +    else
    1.58 +    {
    1.59 +        // Only free handles that we own - don't drop below the base value
    1.60 +        if (handle >= mBaseValue)
    1.61 +        {
    1.62 +            mFreeValues.push_back(handle);
    1.63 +        }
    1.64 +    }
    1.65 +}
    1.66 +
    1.67 +}