96 lines
2.5 KiB
C++
96 lines
2.5 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 <string.h>
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#include <osg/GL>
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#include <osg/PolygonOffset>
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#include <osg/Notify>
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using namespace osg;
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static float s_FactorMultipler = 1.0f;
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static float s_UnitsMultipler = 1.0f;
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static bool s_MultiplerSet = false;
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void PolygonOffset::setFactorMultiplier(float multiplier)
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{
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s_MultiplerSet = true;
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s_FactorMultipler = multiplier;
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}
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float PolygonOffset::getFactorMultiplier()
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{
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return s_FactorMultipler;
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}
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void PolygonOffset::setUnitsMultiplier(float multiplier)
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{
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s_MultiplerSet = true;
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s_UnitsMultipler = multiplier;
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}
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float PolygonOffset::getUnitsMultiplier()
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{
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return s_UnitsMultipler;
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}
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bool PolygonOffset::areFactorAndUnitsMultipliersSet()
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{
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return s_MultiplerSet;
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}
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void PolygonOffset::setFactorAndUnitsMultipliersUsingBestGuessForDriver()
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{
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s_MultiplerSet = true;
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// osg::notify(osg::NOTICE)<<"PolygonOffset::setFactorAndUnitMultipliersUsingBestGuessForDriver()"<<std::endl;
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const GLubyte* renderer = glGetString(GL_RENDERER);
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if (renderer)
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{
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if ((strstr((const char*)renderer,"Radeon")!=0) ||
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(strstr((const char*)renderer,"RADEON")!=0) ||
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(strstr((const char*)renderer,"ALL-IN-WONDER")!=0))
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{
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setFactorMultiplier(1.0f);
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setUnitsMultiplier(128.0f);
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osg::notify(osg::INFO)<<"PolygonOffset::setFactorAndUnitsMultipliersUsingBestGuessForDriver() apply ATI workaround."<<std::endl;
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}
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}
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}
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PolygonOffset::PolygonOffset():
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_factor(0.0f),
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_units(0.0f)
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{
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}
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PolygonOffset::PolygonOffset(float factor, float units):
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_factor(factor),
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_units(units)
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{
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}
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PolygonOffset::~PolygonOffset()
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{
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}
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void PolygonOffset::apply(State&) const
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{
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if (!s_MultiplerSet) setFactorAndUnitsMultipliersUsingBestGuessForDriver();
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glPolygonOffset(_factor * s_FactorMultipler,
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_units * s_UnitsMultipler);
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}
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