140 lines
5.5 KiB
C++
140 lines
5.5 KiB
C++
/* OpenSceneGraph example, osgcubemap.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include <osg/Group>
|
|
#include <osg/StateSet>
|
|
#include <osg/TextureCubeMap>
|
|
#include <osg/TexGen>
|
|
#include <osg/TexEnvCombine>
|
|
|
|
#include <osgUtil/ReflectionMapGenerator>
|
|
#include <osgUtil/HighlightMapGenerator>
|
|
#include <osgUtil/HalfWayMapGenerator>
|
|
#include <osgUtil/Optimizer>
|
|
|
|
#include <osgDB/ReadFile>
|
|
#include <osgDB/Registry>
|
|
|
|
#include <osgGA/TrackballManipulator>
|
|
#include <osgGA/FlightManipulator>
|
|
#include <osgGA/DriveManipulator>
|
|
|
|
#include <osgViewer/Viewer>
|
|
|
|
#include <iostream>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
void create_specular_highlights(osg::Node *node)
|
|
{
|
|
osg::StateSet *ss = node->getOrCreateStateSet();
|
|
|
|
// create and setup the texture object
|
|
osg::TextureCubeMap *tcm = new osg::TextureCubeMap;
|
|
tcm->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP);
|
|
tcm->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP);
|
|
tcm->setWrap(osg::Texture::WRAP_R, osg::Texture::CLAMP);
|
|
tcm->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR_MIPMAP_LINEAR);
|
|
tcm->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
|
|
|
|
// generate the six highlight map images (light direction = [1, 1, -1])
|
|
osgUtil::HighlightMapGenerator *mapgen = new osgUtil::HighlightMapGenerator(
|
|
osg::Vec3(1, 1, -1), // light direction
|
|
osg::Vec4(1, 0.9f, 0.8f, 1), // light color
|
|
8); // specular exponent
|
|
|
|
mapgen->generateMap();
|
|
|
|
// assign the six images to the texture object
|
|
tcm->setImage(osg::TextureCubeMap::POSITIVE_X, mapgen->getImage(osg::TextureCubeMap::POSITIVE_X));
|
|
tcm->setImage(osg::TextureCubeMap::NEGATIVE_X, mapgen->getImage(osg::TextureCubeMap::NEGATIVE_X));
|
|
tcm->setImage(osg::TextureCubeMap::POSITIVE_Y, mapgen->getImage(osg::TextureCubeMap::POSITIVE_Y));
|
|
tcm->setImage(osg::TextureCubeMap::NEGATIVE_Y, mapgen->getImage(osg::TextureCubeMap::NEGATIVE_Y));
|
|
tcm->setImage(osg::TextureCubeMap::POSITIVE_Z, mapgen->getImage(osg::TextureCubeMap::POSITIVE_Z));
|
|
tcm->setImage(osg::TextureCubeMap::NEGATIVE_Z, mapgen->getImage(osg::TextureCubeMap::NEGATIVE_Z));
|
|
|
|
// enable texturing, replacing any textures in the subgraphs
|
|
ss->setTextureAttributeAndModes(0, tcm, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON);
|
|
|
|
// texture coordinate generation
|
|
osg::TexGen *tg = new osg::TexGen;
|
|
tg->setMode(osg::TexGen::REFLECTION_MAP);
|
|
ss->setTextureAttributeAndModes(0, tg, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON);
|
|
|
|
// use TexEnvCombine to add the highlights to the original lighting
|
|
osg::TexEnvCombine *te = new osg::TexEnvCombine;
|
|
te->setCombine_RGB(osg::TexEnvCombine::ADD);
|
|
te->setSource0_RGB(osg::TexEnvCombine::TEXTURE);
|
|
te->setOperand0_RGB(osg::TexEnvCombine::SRC_COLOR);
|
|
te->setSource1_RGB(osg::TexEnvCombine::PRIMARY_COLOR);
|
|
te->setOperand1_RGB(osg::TexEnvCombine::SRC_COLOR);
|
|
ss->setTextureAttributeAndModes(0, te, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON);
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
// use an ArgumentParser object to manage the program arguments.
|
|
osg::ArgumentParser arguments(&argc,argv);
|
|
|
|
// construct the viewer.
|
|
osgViewer::Viewer viewer;
|
|
|
|
// load the nodes from the commandline arguments.
|
|
osg::Node* rootnode = osgDB::readNodeFiles(arguments);
|
|
|
|
// if not loaded assume no arguments passed in, try use default mode instead.
|
|
if (!rootnode) rootnode = osgDB::readNodeFile("cessna.osgt");
|
|
|
|
if (!rootnode)
|
|
{
|
|
osg::notify(osg::NOTICE)<<"Please specify a model filename on the command line."<<std::endl;
|
|
return 1;
|
|
}
|
|
|
|
// create specular highlights
|
|
create_specular_highlights(rootnode);
|
|
|
|
// run optimization over the scene graph
|
|
osgUtil::Optimizer optimzer;
|
|
optimzer.optimize(rootnode);
|
|
|
|
// add a viewport to the viewer and attach the scene graph.
|
|
viewer.setSceneData(rootnode);
|
|
|
|
// create the windows and run the threads.
|
|
viewer.realize();
|
|
|
|
// now check to see if texture cube map is supported.
|
|
for(unsigned int contextID = 0;
|
|
contextID<osg::DisplaySettings::instance()->getMaxNumberOfGraphicsContexts();
|
|
++contextID)
|
|
{
|
|
osg::TextureCubeMap::Extensions* tcmExt = osg::TextureCubeMap::getExtensions(contextID,false);
|
|
if (tcmExt)
|
|
{
|
|
if (!tcmExt->isCubeMapSupported())
|
|
{
|
|
std::cout<<"Warning: texture_cube_map not supported by OpenGL drivers, unable to run application."<<std::endl;
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return viewer.run();
|
|
}
|