Thanks David! I got it to work now.
Here my function creating a 2D texture from a 2-Dimensional vector, in case
it's of any use to anyone.
Code:
osg::Texture2D* createTextureLUT2D(std::vector<std::vector<float> >& data)
{
int rows = data.size();
int cols = data[0].size();
//create image containing one channel of float, we use the RED channel
osg::Image* image = new osg::Image;
image->allocateImage(cols, rows, 1, GL_RED, GL_FLOAT);
image->setInternalTextureFormat(GL_R32F);
//set the data to the image; the image stores successive columns rather
than succesive rows
float* dataPtr = (float*)image->data();
for (int b = 0; b < cols; b++)
for (int a = 0; a < rows; a++)
*dataPtr++ = data[a][b];
//create the texture and set its image
osg::ref_ptr<osg::Texture2D> texture = new osg::Texture2D;
texture->setImage(image);
texture->setFilter(osg::Texture2D::MIN_FILTER, osg::Texture2D::NEAREST);
texture->setFilter(osg::Texture2D::MAG_FILTER, osg::Texture2D::NEAREST);
return texture.release();
}
cheers, Ivar
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=74963#74963
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