147 lines
6.1 KiB
C++
147 lines
6.1 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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#include <stdlib.h>
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#include <string.h>
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#include <osg/CullSettings>
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#include <osg/ArgumentParser>
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#include <osg/ApplicationUsage>
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#include <osg/Notify>
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using namespace osg;
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CullSettings::CullSettings(const CullSettings& cs)
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{
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setCullSettings(cs);
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}
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void CullSettings::setDefaults()
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{
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_inheritanceMask = ALL_VARIABLES;
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_cullingMode = DEFAULT_CULLING;
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_LODScale = 1.0f;
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_smallFeatureCullingPixelSize = 2.0f;
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_computeNearFar = COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES;
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_nearFarRatio = 0.0005f;
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_impostorActive = true;
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_depthSortImpostorSprites = false;
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_impostorPixelErrorThreshold = 4.0f;
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_numFramesToKeepImpostorSprites = 10;
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_cullMask = 0xffffffff;
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_cullMaskLeft = 0xffffffff;
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_cullMaskRight = 0xffffffff;
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// override during testing
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//_computeNearFar = COMPUTE_NEAR_FAR_USING_PRIMITIVES;
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//_nearFarRatio = 0.00005f;
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}
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void CullSettings::setCullSettings(const CullSettings& rhs)
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{
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_inheritanceMask = rhs._inheritanceMask;
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_computeNearFar = rhs._computeNearFar;
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_cullingMode = rhs._cullingMode;
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_LODScale = rhs._LODScale;
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_smallFeatureCullingPixelSize = rhs._smallFeatureCullingPixelSize;
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_clampProjectionMatrixCallback = rhs._clampProjectionMatrixCallback;
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_nearFarRatio = rhs._nearFarRatio;
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_impostorActive = rhs._impostorActive;
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_depthSortImpostorSprites = rhs._depthSortImpostorSprites;
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_impostorPixelErrorThreshold = rhs._impostorPixelErrorThreshold;
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_numFramesToKeepImpostorSprites = rhs._numFramesToKeepImpostorSprites;
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_cullMask = rhs._cullMask;
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_cullMaskLeft = rhs._cullMaskLeft;
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_cullMaskRight = rhs._cullMaskRight;
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}
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void CullSettings::inheritCullSettings(const CullSettings& settings, unsigned int inheritanceMask)
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{
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if (inheritanceMask & COMPUTE_NEAR_FAR_MODE) _computeNearFar = settings._computeNearFar;
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if (inheritanceMask & NEAR_FAR_RATIO) _nearFarRatio = settings._nearFarRatio;
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if (inheritanceMask & IMPOSTOR_ACTIVE) _impostorActive = settings._impostorActive;
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if (inheritanceMask & DEPTH_SORT_IMPOSTOR_SPRITES) _depthSortImpostorSprites = settings._depthSortImpostorSprites;
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if (inheritanceMask & IMPOSTOR_PIXEL_ERROR_THRESHOLD) _impostorPixelErrorThreshold = settings._impostorPixelErrorThreshold;
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if (inheritanceMask & NUM_FRAMES_TO_KEEP_IMPOSTORS_SPRITES) _numFramesToKeepImpostorSprites = settings._numFramesToKeepImpostorSprites;
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if (inheritanceMask & CULL_MASK) _cullMask = settings._cullMask;
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if (inheritanceMask & CULL_MASK_LEFT) _cullMaskLeft = settings._cullMaskLeft;
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if (inheritanceMask & CULL_MASK_RIGHT) _cullMaskRight = settings._cullMaskRight;
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if (inheritanceMask & CULLING_MODE) _cullingMode = settings._cullingMode;
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if (inheritanceMask & LOD_SCALE) _LODScale = settings._LODScale;
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if (inheritanceMask & SMALL_FEATURE_CULLING_PIXEL_SIZE) _smallFeatureCullingPixelSize = settings._smallFeatureCullingPixelSize;
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if (inheritanceMask & CLAMP_PROJECTION_MATRIX_CALLBACK) _clampProjectionMatrixCallback = settings._clampProjectionMatrixCallback;
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}
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static ApplicationUsageProxy ApplicationUsageProxyCullSettings_e0(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_COMPUTE_NEAR_FAR_MODE <mode>","DO_NOT_COMPUTE_NEAR_FAR | COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES | COMPUTE_NEAR_FAR_USING_PRIMITIVES");
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static ApplicationUsageProxy ApplicationUsageProxyCullSettings_e1(ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_NEAR_FAR_RATIO <float>","Set the ratio between near and far planes - must greater than 0.0 but less than 1.0.");
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void CullSettings::readEnvironmentalVariables()
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{
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osg::notify(osg::INFO)<<"CullSettings::readEnvironmentalVariables()"<<std::endl;
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char *ptr;
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if ((ptr = getenv("OSG_COMPUTE_NEAR_FAR_MODE")) != 0)
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{
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if (strcmp(ptr,"DO_NOT_COMPUTE_NEAR_FAR")==0) _computeNearFar = DO_NOT_COMPUTE_NEAR_FAR;
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else if (strcmp(ptr,"COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES")==0) _computeNearFar = COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES;
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else if (strcmp(ptr,"COMPUTE_NEAR_FAR_USING_PRIMITIVES")==0) _computeNearFar = COMPUTE_NEAR_FAR_USING_PRIMITIVES;
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osg::notify(osg::INFO)<<"Set compute near far mode to "<<_computeNearFar<<std::endl;
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}
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if ((ptr = getenv("OSG_NEAR_FAR_RATIO")) != 0)
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{
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_nearFarRatio = atof(ptr);
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osg::notify(osg::INFO)<<"Set near/far ratio to "<<_nearFarRatio<<std::endl;
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}
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}
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void CullSettings::readCommandLine(ArgumentParser& arguments)
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{
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// report the usage options.
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if (arguments.getApplicationUsage())
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{
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arguments.getApplicationUsage()->addCommandLineOption("--COMPUTE_NEAR_FAR_MODE <mode>","DO_NOT_COMPUTE_NEAR_FAR | COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES | COMPUTE_NEAR_FAR_USING_PRIMITIVES");
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arguments.getApplicationUsage()->addCommandLineOption("--NEAR_FAR_RATIO <float>","Set the ratio between near and far planes - must greater than 0.0 but less than 1.0.");
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}
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std::string str;
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while(arguments.read("--COMPUTE_NEAR_FAR_MODE",str))
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{
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if (str=="DO_NOT_COMPUTE_NEAR_FAR") _computeNearFar = DO_NOT_COMPUTE_NEAR_FAR;
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else if (str=="COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES") _computeNearFar = COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES;
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else if (str=="COMPUTE_NEAR_FAR_USING_PRIMITIVES") _computeNearFar = COMPUTE_NEAR_FAR_USING_PRIMITIVES;
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osg::notify(osg::INFO)<<"Set compute near far mode to "<<_computeNearFar<<std::endl;
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}
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double value;
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while(arguments.read("--NEAR_FAR_RATIO",value))
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{
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_nearFarRatio = value;
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osg::notify(osg::INFO)<<"Set near/far ratio to "<<_nearFarRatio<<std::endl;
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}
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}
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