Am Fre, den 26.12.2003 schrieb Sven Neumann um 21:49: > there's another thing I forgot to mention that might be worth to look > into when it comes to GIMP on Mac OS X. The new compositing code that > Helvetix added already provides the framework for making use of > Altivec instructions. If someone has access to a G4/G5 and has some > experience with this stuff, it shouldn't be hard to add Altivec code > for the most common compositing routines.
All pixel data needs to be aligned on 128bit boundaries to be useful for AltiVec. Last time I looked we couldn't even ensure 32bit alignment (which means that every major platform suffers a lot). While it is possible to realign unaligned data with AltiVec, this is not very efficient for small amounts or non-continuous regions for simple operations. -- Servus, Daniel
Description: Dies ist ein digital signierter Nachrichtenteil