render to texture tips & tricks

[ajvbochove]

Hi to you all,

 

I've got a guestion about RTT (Render To Texture).

I think to reduce rendertimes for an animation RTT can be used.

 

MR (Mental Ray) is used for the stills, but now (with Arch. & Design mat.) I would like to RTT (because maybe it will reduce the overall rendertime).

I read that MR isn't the best render for this, but I used MR materials.

There are more RTT Elements, so what is the best to use for an architectural animation?

I saved FG map, tweaked my settings....

 

I was thinking about baking my Area light coming through the windows, and bake the shadow's created by interior lights on the inner walls and flooring.

Should I use a Complete, Diffuse, Shadow, Lightning or BlendMap?

 

Then I can disable the cast shadow options for all the light, right?.

May even use 1 singel light for Ambient (you can bake Ambient to, but...)

 

So the real question is:

Would you like to share your baking proces tips & tricks used for architectural animations?

 

Thanks.

[ahmon]

This is a link to a tutorial for texture baking.

 

http://www.spot3d.com/vray/help/150R1/tutorials_baking_part1.htm

 

I did it and it is damn good for animations (No moving objects though).

 

good luck

[ajvbochove]

I can't open the link (maybe it's because of the restrictions at ^&*^%$%$%^work). But it's also a Vray link (I use MR).

 

The answers I searching for are:

-What RTT elements to use (which will reduce rendertime the most, and doesnt have the most workload?

-Can MR 3.6 be used for all the baking?

-What is common use in the (arch.) industrie?

 

I hope to get some tips & tricks because I have to reduce the overall rendertime this week.

 

Thanks again.

[chiquito]

ahmon, would it be possible te check the link?

I cant open it either

thanks

[chiquito]

http://www.spot3d.com/vray/help/150SP1/

[notamondayfan]

ive been playing with RTT with MR, and getting good results (For real time app, not animation), but im sure the concepts are the same.

To get good results, i used a combination of diffuse, ambient occlusion, lightmap, shadows, and others, depending on material.

Also id recomend unwrapping your buildings by hand, as the automatic unwrap is useless! it may take longer, but at least you can control how much of each map is assigned to important / unimportant areas.

[ahmon]

http://www.spot3d.com/vray/help/150SP1/tutorials_baking_part1.htm

 

this one should work.

[ajvbochove]

" a combination of diffuse, ambient occlusion, lightmap, shadows, and others, depending on material."

 

How do you combine them?

Do you RTT to different files and merge them in PSD (Photoshop)?

 

The link above: RTT and apply to Self-Illumination in Standard mat. is something I'm going to try at home. I'm working on animation of a large commercial interior which has to have some walkthroughs and fly-overs.

I think I have to RTT the walls of the interior rooms as different maps vs 1 large map (high res. printing (A3 300 dpi).

 

Then when I render the animation there is something like Bitmap Proxies, isn't there. (or is this useless).

 

As I said: I will try this out, but if there are other methods please let me (and all the others) know.

[notamondayfan]

 

How do you combine them?

Do you RTT to different files and merge them in PSD (Photoshop)?

 

 

Pretty straight forward to use the seperate render passes and comp them in PS to get good results, then map them to your models.