I currently use paletted textures (through glColorTable() extension) in my volume rendering application (FreeVol-3D).
I use it not for the compression, but for the ability to vary the look-up-table for 2d & 3D RGBA textures at interactive rates.
Is there any other efficient way of updating the texure LUT ?
I ask, as only Nvidia and 3dlabs seem to support paletted textures and the palette resolution is limited to 8-bits.
many thanks!
Karthik