/usr/include/osgEarth/DrawInstanced is in libosgearth-dev 2.7.0+dfsg-2+b3.
This file is owned by root:root, with mode 0o644.
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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 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | /* -*-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_DRAW_INSTANCED_H
#define OSGEARTH_DRAW_INSTANCED_H 1
#include <osgEarth/Common>
#include <osgEarth/Containers>
#include <osgEarth/VirtualProgram>
#include <osg/NodeVisitor>
#include <osg/Geode>
/**
* Some utilities to support *DrawInstanced rendering.
*/
namespace osgEarth
{
namespace DrawInstanced
{
/**
* Referenced-counted vector of instance matrices. These are stored
* in the node that's been instanced so the app can recover the
* original positioning data.
*/
class MatrixRefVector : public osgEarth::MixinVector<osg::Matrixf,osg::Object>
{
public:
META_Object(osgEarth,MatrixRefVector);
MatrixRefVector() : osgEarth::MixinVector<osg::Matrixf,osg::Object>() { }
protected:
MatrixRefVector(const MatrixRefVector& rhs, const osg::CopyOp& op) { }
};
/**
* Visitor that converts all the primitive sets in a graph to use
* instanced draw calls.
* Called by convertGraphToUseDrawInstanced().
*/
class OSGEARTH_EXPORT ConvertToDrawInstanced : public osg::NodeVisitor
{
public:
/**
* Create the visitor that will convert primitive sets to draw
* <num> instances.
*/
ConvertToDrawInstanced(
unsigned numInstances,
const osg::BoundingBox& bbox,
bool optimize );
void apply(osg::Geode&);
void apply(osg::LOD&);
protected:
unsigned _numInstances;
bool _optimize;
osg::ref_ptr<osg::Drawable::ComputeBoundingBoxCallback> _staticBBoxCallback;
std::list<osg::PrimitiveSet*> _primitiveSets;
};
/**
* Creates a virtual shader program that implements DrawInstanced rendering.
* You should prepare the scene graph with the ConvertToDrawInstanced
* visitor first.
* Called by convertGraphToUseDrawInstanced().
*/
extern OSGEARTH_EXPORT void install(osg::StateSet* stateset);
extern OSGEARTH_EXPORT void remove (osg::StateSet* stateset);
/**
* Processes a scene graph and converts all the top-level MatrixTransform
* nodes into shader uniforms that can be used with the VirtualProgram
* created by createDrawInstacedShaders.
*/
extern OSGEARTH_EXPORT void convertGraphToUseDrawInstanced(
osg::Group* graph );
/**
* Gets the vector of instance matrices attached to a node,
* or NULL if not found.
*/
extern OSGEARTH_EXPORT const MatrixRefVector* getMatrixVector(
osg::Node* node );
}
}
#endif // OSGEARTH_DRAW_INSTANCED_H
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