/usr/include/osg/GraphicsCostEstimator is in libopenscenegraph-dev 3.2.0~rc1-4.
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 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library 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
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_GRAPHICSCOSTESTIMATOR
#define OSG_GRAPHICSCOSTESTIMATOR
#include <osg/Referenced>
#include <osg/ref_ptr>
#include <utility>
namespace osg
{
class Geometry;
class Texture;
class Program;
class Node;
class RenderInfo;
struct ClampedLinearCostFunction1D
{
ClampedLinearCostFunction1D(double cost0=0.0, double dcost_di=0.0, unsigned int min_input=0):
_cost0(cost0),
_dcost_di(dcost_di),
_min_input(min_input) {}
void set(double cost0, double dcost_di, unsigned int min_input)
{
_cost0 = cost0;
_dcost_di = dcost_di;
_min_input = min_input;
}
double operator() (unsigned int input) const
{
return _cost0 + _dcost_di * double(input<=_min_input ? 0u : input-_min_input);
}
double _cost0;
double _dcost_di;
unsigned int _min_input;
};
/** Pair of double representing CPU and GPU times in seconds as first and second elements in std::pair. */
typedef std::pair<double, double> CostPair;
class OSG_EXPORT GeometryCostEstimator : public osg::Referenced
{
public:
GeometryCostEstimator();
void setDefaults();
void calibrate(osg::RenderInfo& renderInfo);
CostPair estimateCompileCost(const osg::Geometry* geometry) const;
CostPair estimateDrawCost(const osg::Geometry* geometry) const;
protected:
ClampedLinearCostFunction1D _arrayCompileCost;
ClampedLinearCostFunction1D _primtiveSetCompileCost;
ClampedLinearCostFunction1D _arrayDrawCost;
ClampedLinearCostFunction1D _primtiveSetDrawCost;
double _displayListCompileConstant;
double _displayListCompileFactor;
};
class OSG_EXPORT TextureCostEstimator : public osg::Referenced
{
public:
TextureCostEstimator();
void setDefaults();
void calibrate(osg::RenderInfo& renderInfo);
CostPair estimateCompileCost(const osg::Texture* texture) const;
CostPair estimateDrawCost(const osg::Texture* texture) const;
protected:
ClampedLinearCostFunction1D _compileCost;
ClampedLinearCostFunction1D _drawCost;
};
class OSG_EXPORT ProgramCostEstimator : public osg::Referenced
{
public:
ProgramCostEstimator();
void setDefaults();
void calibrate(osg::RenderInfo& renderInfo);
CostPair estimateCompileCost(const osg::Program* program) const;
CostPair estimateDrawCost(const osg::Program* program) const;
protected:
ClampedLinearCostFunction1D _shaderCompileCost;
ClampedLinearCostFunction1D _linkCost;
ClampedLinearCostFunction1D _drawCost;
};
class OSG_EXPORT GraphicsCostEstimator : public osg::Referenced
{
public:
GraphicsCostEstimator();
/** set defaults for computing the costs.*/
void setDefaults();
/** calibrate the costs of various compile and draw operations */
void calibrate(osg::RenderInfo& renderInfo);
CostPair estimateCompileCost(const osg::Geometry* geometry) const { return _geometryEstimator->estimateCompileCost(geometry); }
CostPair estimateDrawCost(const osg::Geometry* geometry) const { return _geometryEstimator->estimateDrawCost(geometry); }
CostPair estimateCompileCost(const osg::Texture* texture) const { return _textureEstimator->estimateCompileCost(texture); }
CostPair estimateDrawCost(const osg::Texture* texture) const { return _textureEstimator->estimateDrawCost(texture); }
CostPair estimateCompileCost(const osg::Program* program) const { return _programEstimator->estimateCompileCost(program); }
CostPair estimateDrawCost(const osg::Program* program) const { return _programEstimator->estimateDrawCost(program); }
CostPair estimateCompileCost(const osg::Node* node) const;
CostPair estimateDrawCost(const osg::Node* node) const;
protected:
virtual ~GraphicsCostEstimator();
osg::ref_ptr<GeometryCostEstimator> _geometryEstimator;
osg::ref_ptr<TextureCostEstimator> _textureEstimator;
osg::ref_ptr<ProgramCostEstimator> _programEstimator;
};
}
#endif
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