/usr/include/osgEarth/TextureCompositor is in libosgearth-dev 2.7.0+dfsg-2+b3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | /* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2015 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#ifndef OSGEARTH_TEXTURE_COMPOSITOR_H
#define OSGEARTH_TEXTURE_COMPOSITOR_H 1
#include <osgEarth/Common>
#include <osgEarth/ThreadingUtils>
namespace osgEarth
{
/**
* Utility class that tracks texture allocation units
*/
class OSGEARTH_EXPORT TextureCompositor : public osg::Referenced
{
public:
/**
* Constructs a new compositor.
*/
TextureCompositor();
/** dtor */
virtual ~TextureCompositor() { }
/**
* Requests a texture image unit that is not in use, and marks is as reserved.
* You can release the reserved texture image unit by calling releaseTextureImageUnit().
* @param out_unit Reserved unit is written to this variable.
* @param requestor Optional requestor string (for information purposes only)
*/
bool reserveTextureImageUnit(
int& out_unit,
const char* requestor =0L );
/**
* Releases a reserved texture image unit previously returned by reserveTextureImageUnit.
*/
void releaseTextureImageUnit(int unit);
/**
* Marks a specific texture image as reserved. Only call this if your application
* is known to use a particular texture image unit and you don't want osgEarth
* touching it.
*
* Returns true upon success, and false if the unit has already been reserved.
*/
bool setTextureImageUnitOffLimits(int unit);
private:
Threading::Mutex _reservedUnitsMutex;
std::set<int> _reservedUnits;
};
}
#endif // OSGEARTH_TEXTURE_COMPOSITOR_H
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