1 /* OpenSceneGraph example, osgmultitexture.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
11 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
12 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
13 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
14 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
15 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
16 * THE SOFTWARE.
17 */
18
19 #include <osgViewer/Viewer>
20
21 #include <osg/Notify>
22
23 #include <osg/Texture2D>
24 #include <osg/TexEnv>
25 #include <osg/TexGen>
26
27 #include <osgDB/Registry>
28 #include <osgDB/ReadFile>
29
30 #include <osgGA/TrackballManipulator>
31 #include <osgGA/FlightManipulator>
32 #include <osgGA/DriveManipulator>
33
34 #include <osgUtil/Optimizer>
35
36 #include <iostream>
37
main(int argc,char ** argv)38 int main( int argc, char **argv )
39 {
40 // use an ArgumentParser object to manage the program arguments.
41 osg::ArgumentParser arguments(&argc,argv);
42
43 // construct the viewer.
44 osgViewer::Viewer viewer;
45
46 // load the nodes from the commandline arguments.
47 osg::ref_ptr<osg::Node> rootnode = osgDB::readRefNodeFiles(arguments);
48
49 // if not loaded assume no arguments passed in, try use default mode instead.
50 if (!rootnode) rootnode = osgDB::readRefNodeFile("cessnafire.osgt");
51
52 if (!rootnode)
53 {
54 osg::notify(osg::NOTICE)<<"Please specify a model filename on the command line."<<std::endl;
55 return 1;
56 }
57
58 osg::ref_ptr<osg::Image> image = osgDB::readRefImageFile("Images/reflect.rgb");
59 if (image)
60 {
61 osg::Texture2D* texture = new osg::Texture2D;
62 texture->setImage(image);
63
64 osg::TexGen* texgen = new osg::TexGen;
65 texgen->setMode(osg::TexGen::SPHERE_MAP);
66
67 osg::TexEnv* texenv = new osg::TexEnv;
68 texenv->setMode(osg::TexEnv::BLEND);
69 texenv->setColor(osg::Vec4(0.3f,0.3f,0.3f,0.3f));
70
71 osg::StateSet* stateset = new osg::StateSet;
72 stateset->setTextureAttributeAndModes(1,texture,osg::StateAttribute::ON);
73 stateset->setTextureAttributeAndModes(1,texgen,osg::StateAttribute::ON);
74 stateset->setTextureAttribute(1,texenv);
75
76 rootnode->setStateSet(stateset);
77 }
78 else
79 {
80 osg::notify(osg::NOTICE)<<"unable to load reflect map, model will not be mutlitextured"<<std::endl;
81 }
82
83 // run optimization over the scene graph
84 osgUtil::Optimizer optimzer;
85 optimzer.optimize(rootnode);
86
87 // add a viewport to the viewer and attach the scene graph.
88 viewer.setSceneData( rootnode );
89
90 // create the windows and run the threads.
91 viewer.realize();
92
93 for(unsigned int contextID = 0;
94 contextID<osg::DisplaySettings::instance()->getMaxNumberOfGraphicsContexts();
95 ++contextID)
96 {
97 osg::GLExtensions* textExt = osg::GLExtensions::Get(contextID,false);
98 if (textExt)
99 {
100 if (!textExt->isMultiTexturingSupported)
101 {
102 std::cout<<"Warning: multi-texturing not supported by OpenGL drivers, unable to run application."<<std::endl;
103 return 1;
104 }
105 }
106 }
107
108 return viewer.run();
109 }
110