[vtkusers] vtkOpenGLVolumeTextureMapper2D too slow

[Charl P. Botha]

On Mon, Feb 10, 2003 at 11:11:46AM -0500, Bradley Lowekamp wrote:
> caster at a lower resolution actually ran faster. I poked around in the
> code for the openGL volume texture mapper and it appears that it does
> not uses Texture Objects  so it does not take advantage of any on board
> memory the card has. Why has this not been implemented? volView?

Please check again.  It very clearly makes use of hardware assisted texture
mapping. :) But 256*256*256 still has to be shaded in software (IIRC)
amongst other things before the texture mapper can do the compositing, so
you should probably not expect lightning fast updates.

-- 
charl p. botha http://cpbotha.net/ http://visualisation.tudelft.nl/