215 lines
6.9 KiB
C++
215 lines
6.9 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGUTIL_STATISTICS
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#define OSGUTIL_STATISTICS 1
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#include <osgUtil/Export>
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#include <osg/PrimitiveSet>
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#include <osg/Drawable>
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#include <osg/NodeVisitor>
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#include <osg/Geode>
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#include <osg/LOD>
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#include <osg/Switch>
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#include <osg/Geometry>
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#include <osg/Transform>
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#include <map>
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#include <set>
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#include <ostream>
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namespace osgUtil {
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/**
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* Statistics base class. Used to extract primitive information from
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* the renderBin(s). Add a case of getStats(osgUtil::Statistics *stat)
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* for any new drawable (or drawable derived class) that you generate
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* (eg see Geometry.cpp). There are 20 types of drawable counted - actually only
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* 14 cases can occur in reality. these represent sets of GL_POINTS, GL_LINES
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* GL_LINESTRIPS, LOOPS, TRIANGLES, TRI-fans, tristrips, quads, quadstrips etc
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* The number of triangles rendered is inferred:
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* each triangle = 1 triangle (number of vertices/3)
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* each quad = 2 triangles (nverts/2)
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* each trifan or tristrip = (length-2) triangles and so on.
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*/
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class OSGUTIL_EXPORT Statistics : public osg::PrimitiveFunctor
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{
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public:
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typedef std::pair<unsigned int,unsigned int> PrimitivePair;
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typedef std::map<GLenum,PrimitivePair> PrimitiveValueMap;
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typedef std::map<GLenum, unsigned int> PrimitiveCountMap;
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Statistics();
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enum StatsType
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{
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STAT_NONE, // default
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STAT_FRAMERATE,
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STAT_GRAPHS,
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STAT_PRIMS,
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STAT_PRIMSPERVIEW,
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STAT_PRIMSPERBIN,
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STAT_DC,
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STAT_RESTART // hint to restart the stats
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};
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void reset();
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void setType(StatsType t) {stattype=t;}
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virtual void setVertexArray(unsigned int count,const osg::Vec3*) { _vertexCount += count; }
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virtual void setVertexArray(unsigned int count,const osg::Vec2*) { _vertexCount += count; }
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virtual void setVertexArray(unsigned int count,const osg::Vec4*) { _vertexCount += count; }
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virtual void setVertexArray(unsigned int count,const osg::Vec3d*) { _vertexCount += count; }
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virtual void setVertexArray(unsigned int count,const osg::Vec2d*) { _vertexCount += count; }
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virtual void setVertexArray(unsigned int count,const osg::Vec4d*) { _vertexCount += count; }
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virtual void drawArrays(GLenum mode,GLint,GLsizei count);
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virtual void drawElements(GLenum mode,GLsizei count,const GLubyte*);
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virtual void drawElements(GLenum mode,GLsizei count,const GLushort*);
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virtual void drawElements(GLenum mode,GLsizei count,const GLuint*);
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virtual void begin(GLenum mode);
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inline void vertex()
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{
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PrimitivePair& prim = _primitiveCount[_currentPrimitiveFunctorMode];
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++prim.second;
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_number_of_vertexes++;
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}
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virtual void vertex(float,float,float) { vertex(); }
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virtual void vertex(const osg::Vec3&) { vertex(); }
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virtual void vertex(const osg::Vec2&) { vertex(); }
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virtual void vertex(const osg::Vec4&) { vertex(); }
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virtual void vertex(float,float) { vertex(); }
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virtual void vertex(float,float,float,float) { vertex(); }
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virtual void end();
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void addDrawable() { numDrawables++;}
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void addMatrix() { nummat++;}
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void addLight(int np) { nlights+=np;}
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void addImpostor(int np) { nimpostor+= np; }
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inline int getBins() { return nbins;}
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void setDepth(int d) { depth=d; }
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void addBins(int np) { nbins+= np; }
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void setBinNo(int n) { _binNo=n;}
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void add(const Statistics& stats);
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public:
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PrimitiveCountMap::iterator GetPrimitivesBegin() { return _primitives_count.begin(); }
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PrimitiveCountMap::iterator GetPrimitivesEnd() { return _primitives_count.end(); }
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int numDrawables, nummat, nbins;
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int nlights;
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int depth; // depth into bins - eg 1.1,1.2,1.3 etc
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int _binNo;
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StatsType stattype;
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int nimpostor; // number of impostors rendered
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unsigned int _vertexCount;
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PrimitiveValueMap _primitiveCount;
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GLenum _currentPrimitiveFunctorMode;
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private:
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PrimitiveCountMap _primitives_count;
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unsigned int _total_primitives_count;
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unsigned int _number_of_vertexes;
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inline unsigned int _calculate_primitives_number_by_mode(GLenum, GLsizei);
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};
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inline unsigned int Statistics::_calculate_primitives_number_by_mode(GLenum mode, GLsizei count)
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{
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switch (mode)
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{
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case GL_POINTS:
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case GL_LINE_LOOP:
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case GL_POLYGON: return count;
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case GL_LINES: return count / 2;
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case GL_LINE_STRIP: return count - 1;
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case GL_TRIANGLES: return count / 3;
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case GL_TRIANGLE_STRIP:
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case GL_TRIANGLE_FAN: return count - 2;
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case GL_QUADS: return count / 4;
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case GL_QUAD_STRIP: return count / 2 - 1;
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default: return 0;
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}
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}
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/** StatsVisitor for collecting statistics about scene graph.*/
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class OSGUTIL_EXPORT StatsVisitor : public osg::NodeVisitor
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{
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public:
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typedef std::set<osg::Node*> NodeSet;
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typedef std::set<osg::Drawable*> DrawableSet;
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typedef std::set<osg::StateSet*> StateSetSet;
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StatsVisitor();
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void reset();
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void apply(osg::Node& node);
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void apply(osg::Group& node);
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void apply(osg::Transform& node);
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void apply(osg::LOD& node);
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void apply(osg::Switch& node);
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void apply(osg::Geode& node);
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void apply(osg::Drawable& drawable);
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void totalUpStats();
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void print(std::ostream& out);
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unsigned int _numInstancedGroup;
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unsigned int _numInstancedSwitch;
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unsigned int _numInstancedLOD;
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unsigned int _numInstancedTransform;
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unsigned int _numInstancedGeode;
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unsigned int _numInstancedDrawable;
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unsigned int _numInstancedGeometry;
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unsigned int _numInstancedStateSet;
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NodeSet _groupSet;
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NodeSet _transformSet;
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NodeSet _lodSet;
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NodeSet _switchSet;
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NodeSet _geodeSet;
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DrawableSet _drawableSet;
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DrawableSet _geometrySet;
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StateSetSet _statesetSet;
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osgUtil::Statistics _uniqueStats;
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osgUtil::Statistics _instancedStats;
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};
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}
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#endif
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