View Full Version : How much information should extension specifications contain?

10-12-2007, 05:08 AM
I just looked at the AMD_compressed_3DC_texture and AMD_compressed_ATC_texture specifications.
They introduce new undocumented compressed texture formats.

These specifications are very short, instead of technical detail they contain some marketing-blabala ("DC provides an ideal solution to the normal map compression problem. It provides up to 4:1 compression of normal maps, with image quality that is virtually indistinguishable from the uncompressed version. The technique is hardware accelerated, so the performance impact is minimal. [...]") and say that technical detail is not available ("The details of these formats is not disclosed [...]").

I always supposed that extension specifications should provide enough information to implement them.

These extensions are not in the OpenGL extension registry, but in the OpenGL ES extension registry instead.

10-12-2007, 06:50 AM
have they provided you with enough information to use the extension? if so, you have no reason to complain.