On Tuesday, 30 November 2004 01:54, Chris Metzler wrote: > [ snip ] > } The compressions are not meant to save disk drive space (plenty of it) > } but to: > } > } -reduce the video card memory useage, as since the Geforce2, video > } cards can directly render a compressed texture on a 3D polygon without > } decompressing it > [ snip ]
It's pretty neat technology. No decompression is required as reading a texture is done on the fly when it's required. If only a portion of the compressed texture is used in a scene then only the required pixels of the texture are decoded and used. One would be able to stick nearly 768MB of textures onto a video card with 128MB of VRAM. The IO saved is enormous if you were trying to send all those textures to the video card for each frame. Paul _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
