>   POV-Ray 3.1g for Windows took less than 8 minutes to render the scene.
>   MegaPov 0.6a for Windows took more than 13 minutes to render the scene.

	Hi Warp,

	Needless to ask whether you compiled the different versions with
the same optimisation flags... Do you use gcc on your Sun devices ? Maybe
it's cc instead.
	Anyway, the difference between official POV and Mega are probably
due to the enhanced support for all the stuffs you mentionned. In any
case it requires at least a few tests more per ray (including light rays,
shadows rays and co). You probably know better than me that 'if's are not
the best optimized instructions - if conditional branching can even be
optimized. There might be a lot of those things especially in texture
handling. Must be checked.
	However I'm not sure this is the real cause of slowing down your
rendering. Such a difference seems to involve more drastic things. Just
in case, did you rendered without display and file output ?


*** Nicolas Calimet
*** http://pov4grasp.free.fr

Post a reply to this message