[osg-users] Problem using osg::ColorMatrix
Gordon Tomlinson
gordon.tomlinson at sensor.com
Mon Jul 28 07:41:27 PDT 2008
Having never used a ColorMatrix in OpenGL or OSG
What effect is this supposed to produce ?
Do you have screen grabs of what it should look like if done in raw Opengl ?
-----Original Message-----
From: osg-users-bounces at lists.openscenegraph.org
[mailto:osg-users-bounces at lists.openscenegraph.org] On Behalf Of Rahul Jain
Sent: Monday, July 28, 2008 10:40 AM
To: 'OpenSceneGraph Users'
Subject: [osg-users] Problem using osg::ColorMatrix
Hi all,
I am trying to use OpenFL color matrix functionality through
osg::ColorMatrix but not able to do so. When i apply this to a node
|(cessna.osg) i do not see any effect. I am pasting the code below for
you guys to have a look.
I don't know what am i doing wrong in this simple piece of code .
cheers RJ
int main(int argc, char** argv)
{
osg::MatrixTransform* cessnaMT = new osg::MatrixTransform;
osg::Node* cessna = osgDB::readNodeFile("cessna.osg");
cessnaMT->addChild(cessna);
// Set color matrix
osg::ColorMatrix* colorMatrix = new osg::ColorMatrix;
const osg::Matrix cm (0.15, 0.0, 0.0, 0.0,
0.0, 0.3, 0.0, 0.0,
0.05, 0.0, 0.0, 0.0,
0.0, 0.0, 0.0, 1.0);
colorMatrix->setMatrix(cm);
cessnaMT->getOrCreateStateSet()->setAttributeAndModes(colorMatrix,
osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON);
osgViewer::Viewer viewer;
// add model to viewer.
viewer.setSceneData(cessnaMT);
viewer.run();
return 0;
}
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