OpenGL: is it really worth using in AE?
by Sally Brieman
on
Jul 8, 2008 at 7:09:26 am
Are there any benchmarks out there that show how much better AE works while using the Edit > Preferences > Preview > Enable OpenGL, checked.
Im having some issues w/ OpenGL working atm, but before I make any hardware changes I'd like to know from the COW community just how beneficial it actually is.
Re: OpenGL: is it really worth using in AE? by Kevin Camp on Jul 8, 2008 at 3:13:26 pm
if you have multiple processors/cores you will probably get better performance by enabling the render multiple frames simultaneously option in ae's multiprocessing preference than you will from opengl acceleration. the opengl render engine and ae's multiprocessing render engine are not compatible, so if you have both enabled, the opengl renderer will be used for previews. also, opengl acceleration only accelerates about a dozen standard effects, blending modes and motion blur, multiprocessing will accelerate all rendering.
in some testing i did, i found that multiprocessing was faster than opengl for ram previews, but that may depend on how many cores you have and what effects you used in your comp.
if you want to test things on your machine, open a previous project and ram preview a comp with opengl on and time it. then, disable opengl and enable multiprocessing (if you multiple processors), select edit>purge>all and time the ram preview again.
but generally speaking, even if the opengl acceleration produced slightly faster preview, i would probably disable it in the preferences... to me, it just isn't worth the stability problems, i'd rather ae render slower and crash less....
