70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 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>
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#include <osg/GL>
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#include <osg/LightModel>
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using namespace osg;
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LightModel::LightModel():
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StateAttribute(),
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_ambient(0.2f,0.2f,0.2f,1.0f),
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_colorControl(LightModel::SINGLE_COLOR),
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_localViewer(false),
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_twoSided(false)
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{
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}
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LightModel::~LightModel()
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{
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}
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// need to define if gl.h version < 1.2.
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#ifndef GL_LIGHT_MODEL_COLOR_CONTROL
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#define GL_LIGHT_MODEL_COLOR_CONTROL 0x81F8
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#endif
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#ifndef GL_SINGLE_COLOR
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#define GL_SINGLE_COLOR 0x81F9
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#endif
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#ifndef GL_SEPARATE_SPECULAR_COLOR
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#define GL_SEPARATE_SPECULAR_COLOR 0x81FA
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#endif
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void LightModel::apply(State&) const
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{
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glLightModelfv(GL_LIGHT_MODEL_AMBIENT,_ambient.ptr());
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//static bool s_separateSpecularSupported = strcmp((const char *)glGetString(GL_VERSION),"1.2")>=0;
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static bool s_separateSpecularSupported = (std::string((const char *)glGetString(GL_VERSION)) == "1.2");
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if (s_separateSpecularSupported)
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{
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if (_colorControl==SEPARATE_SPECULAR_COLOR)
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{
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glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL,GL_SEPARATE_SPECULAR_COLOR);
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}
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else
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{
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glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL,GL_SINGLE_COLOR);
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}
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}
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glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER,_localViewer);
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glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,_twoSided);
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}
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