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Help on baking in lighting
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  • p_4204
  • Posted: 04 January 2009 06:42 PM
  • Total Posts: 16
  • Joined: 28 August 2006 11:30 AM

I am working on an animation of a large gymnasium. It has hundreds of interior lights and it was suggested that I bake in the lighting and shadows to save rendering time. I have a few questions:

1-How do I decide what resolution I should use. A running track goes all around the interior (60ftx100ft). Is there a rule of thumb that helps to determine what resolution I would use to make sure it is accurate?

2- I understand that after baking I can get rid of the lighting. I get a black image if I turn out lights even though the shadows have baked correctly. How do I illuminate the scene with bake din lighting?

3-Do I have to bake each materal?

4-Do I have to “unwrap uvw modifier” each item?

5- If I bake each texture with final gather, soft shadows, reflection and refraction included, can I render with these turned off to render faster?



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  • jamsurf
  • Posted: 05 January 2009 10:34 AM

Hi , my thoughts:

1-How do I decide what resolution I should use. A running track goes all around the interior (60ftx100ft). Is there a rule of thumb that helps to determine what resolution I would use to make sure it is accurate?

there is no rule , higher size better resolution . too , higher render times . you can use automatic size , on rtt dialog , and prove diferent values . Use complete maps on pieces that hasnt got texture details , and lightmaps on objects that has texture details .

2- I understand that after baking I can get rid of the lighting. I get a black image if I turn out lights even though the shadows have baked correctly. How do I illuminate the scene with bake din lighting?

you must turnoff lights , and use directx material to see complete and light maps together in max . you can go high with enviroment color
value

3-Do I have to bake each materal?

“must” be one material unique for each object , then you can attach all the objects that use the same material

4-Do I have to “unwrap uvw modifier” each item?

the rtt make an automatic unwrapp of each object for mapping the bake by default , if you want to use your own by hand unwrapp ,
must say this on rtt dialog

5- If I bake each texture with final gather, soft shadows, reflection and refraction included, can I render with these turned off to render faster?

i think that mental ray dont bake properly , go for vray or radiosity or standard illumination



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