Excerpts from Brian Paul's message of Wed Sep 02 16:28:34 +0100 2009: > Chris Wilson wrote: > > Only use the active part of the state key and ignore all the texture units > > beyond Const.MaxTextureUnits. For instance on my i915, this reduces > > sizeof(struct state_key) from 196 to 100 bytes. > > Actually, we can do better than that. If we use key->nr_enabled_units > instead of ctx->Const.MaxTextureUnits we can ignore the disabled > texture units. When no textures are enabled, the key size is only 4 > bytes. With unit[0] enabled, the key size is 16 bytes.
And since the memcmp() will stop after the inequality between key->nr_enabled_units, there is no worry about reading beyond the end of the short key. Excellent! -ickle ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Mesa3d-dev mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
