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technowiz2000
10-18-2006, 03:54 PM
I was wondering if there is a way to make rendering faster since I have a slow computer:compbeati. I've gone to task manager and closed all unnessary files but it still takes forever!!!!

faulknermano
10-19-2006, 05:34 AM
you have to learn how to "cheat" sometimes.

here is a short list:

use shadow casting instead of raytrace
use clip maps instead of transparency (transparency can take a long time)
render double res without AA (if you dont need motion blur) and resize later
use vector blur and reduce AA if you need motblur
render in passes: render objects that dont interact with each other separately
use 2d effects whenever you can
use reflection maps as opposed to raytrace reflections
judicious use of lights and their corresponding calculations for shadow
render in passes (again): render half-res objects that dont need to be in full-resolution; you can also use different render options for these items.

the list can go and on. it really depends on your scene. good luck.

oh, you can also buy another computer to help with rendering. :)

faulknermano
10-19-2006, 05:36 AM
you have to learn how to "cheat" sometimes.

here is a short list:

use shadow casting instead of raytrace
use clip maps instead of transparency (transparency can take a long time)
render double res without AA (if you dont need motion blur) and resize later
use vector blur and reduce AA if you need motblur
render in passes: render objects that dont interact with each other separately
use 2d effects whenever you can
use reflection maps as opposed to raytrace reflections
judicious use of lights and their corresponding calculations for shadow
render in passes (again): render half-res objects that dont need to be in full-resolution; you can also use different render options for these items.

the list can go and on. it really depends on your scene. good luck.

oh, you can also buy another computer to help with rendering. :)

technowiz2000
10-19-2006, 04:14 PM
thanks, they really helped:)

toby
10-20-2006, 12:26 AM
use shadow casting instead of raytrace
I think he means 'Shadow Maps' - big studios still use these for feature films, including Pixar movies and others like Open Season. The trick to optimizing shadow maps is to reduce the shadow map angle to cover only what you want a shadow of, then you maximize the quality of the map, or you can reduce it's resolution.

If you do feel the need to raytrace, turn down the Ray Recursions as low as you can (you'll have to do test renders to see how low you can set it, because it will reduce quality).

If you have to use Area lights, turn down the quality to 2 if you can; more tests...

If you're using any subpatch objects, make copies that are frozen, and render with those.

To speed up the interface, go to display options and turn off 'Show Motion paths'.

faulknermano
10-20-2006, 12:35 AM
I think he means 'Shadow Maps'

whoops! sorry... i'm mixing up the terminologies from maya, which is called "raycast" for shadow maps. heehee... :)