gecko-dev/gfx/gl/VBOArena.cpp

38 lines
992 B
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "VBOArena.h"
#include "GLContext.h"
using namespace mozilla::gl;
GLuint VBOArena::Allocate(GLContext *aGLContext)
{
if (!mAvailableVBOs.size()) {
GLuint vbo;
aGLContext->fGenBuffers(1, &vbo);
mAllocatedVBOs.push_back(vbo);
return vbo;
}
GLuint vbo = mAvailableVBOs.back();
mAvailableVBOs.pop_back();
return vbo;
}
void VBOArena::Reset()
{
mAvailableVBOs = mAllocatedVBOs;
}
void VBOArena::Flush(GLContext *aGLContext)
{
if (mAvailableVBOs.size()) {
#ifdef DEBUG
printf_stderr("VBOArena::Flush for %u VBOs\n", mAvailableVBOs.size());
#endif
aGLContext->fDeleteBuffers(mAvailableVBOs.size(), &mAvailableVBOs[0]);
}
}