OcclusionQueryOGL.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of HPL1 Engine.
 */

#ifndef HPL_OCCLUSION_QUERY_OGL_H
#define HPL_OCCLUSION_QUERY_OGL_H

#include "common/scummsys.h"
#include "hpl1/engine/graphics/OcclusionQuery.h"
#include "hpl1/opengl.h"

#ifdef HPL1_USE_OPENGL

namespace hpl {

class cOcclusionQueryOGL : public iOcclusionQuery {
public:
    cOcclusionQueryOGL();
    ~cOcclusionQueryOGL();

    void Begin();
    void End();
    bool FetchResults();
    unsigned int GetSampleCount();

public:
    int mlLastSampleCount;
    unsigned int mlQueryId;
};

} // namespace hpl

#endif // HPL1_USE_OPENGL
#endif // HPL_OCCLUSION_QUERY_H