[osg-users] Render to Texture

J.P. Delport jpdelport at csir.co.za
Tue Jul 15 05:11:14 PDT 2008


Hi,

make sure the image writer can handle your image format. Bands usually 
mean an alignment error in the data the writer expects. E.g. expects 
binary input data to be RGB, but the data is RGBA.

.jpg does not support alpha I think.

Try .png

jp

paul1492 at yahoo.com wrote:
> I'm attempting to render to a texture and then dump the rendered texture to a file (every frame), but I'm having trouble.
> I've attempted to use the osgprerender example (using the --image option), and replaced the MyCameraPostDrawCallback::operator() to have a
>     osgDB::writeImageFile(*_image, fileName);
> where fileName is a ".tif" file (or .jpg file).
> When I look at the .tif file using the Linux "display" program, I get some funny banded image. What am I doing wrong?
> Is there a more efficient way to get access to the rendered image? Must I allocate an "image" array to the texture to access the image?
> Paul P.
> 
> 
>       
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> osg-users mailing list
> osg-users at lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org

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