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I often have some areas that I need to render more than others (like SSS objects) and it's frustrating to have to render the whole image to get that 1/10th to output quality. Re-rendering an SSS portion after a day of rendering is not really ideal either since it's likely the SSS areas slowing the render down in the first place.

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Fryrender has this, I've been envious for a while now!

It been asked for X amount of times in the past. And no, Fryrender HAD this but it was removed because it caused more trouble than it was worth in the code. Or something like that..

/ Max

why not extra render only that region as "etxra pass"?

there is this tool in mw, and it works greatfor such things, if you really need more work only on one part of image...

cheers
stefan

that would be great indeed!
or if MR would detect automatically which materials need the longest to clean up and put an extra effort into calculating those.

Well even if you could crop and resume and render to another file for later compositing, this would be a big advantage. I realize that there would be noticeable borders where the refined areas are so I wouldn't see this way as being too bad a solution if you could comp them later

Maxwell is very slow. I've been testing VRay for Cinema 4D and I was alarmed at the speed. Sure they don't exactly compare and I prefer Maxwell's quality but if it can't be made faster, it should incorporate more efficient workflow tools to help the user MEET THEIR DEADLINES. In Maxwell, you have these options for "optimization":

- render at a lower res
- fewer SL (darker, noisier image)
- turn off caustics, etc
- darker whites so there is less reflection
- buy another computer and pray that it doesn't flake out like I've seen it do with network rendering

Maxwell's real-light puritanism isn't good for crap if it can't get my SSS object not to look like its covered in flies by the next day. [/list][/i]

lllab wrote:why not extra render only that region as "etxra pass"?

there is this tool in mw, and it works greatfor such things, if you really need more work only on one part of image...

cheers
stefan

can you be more specific? I don't see anything like that in the tools. If you're saying that I should use the Render Region feature, then you're missing my point: you're throwing away hours of work already done by doing this.

Yeah, I think he means the render region/blow up render.

I've been using this extensively on my current project, however it would be much nicer to just be able to draw a rectangle in mxcl and tell it to "clean up" this part. No need for a stupid brushing function, but I would enjoy it not having to copy paste the region + the real render etc

For the best result, render out an object id pass to use as a mask to mask out the "problem" object for replacing in Photoshop. That way you won't have a noticeable rectangle of higher S.L., only the object.

I just make a soft selection usually ... works great if the sl isn't completely in another league. It also works nice if I see a small mistake in a render and change it without having to rerender the whole image.
but it'd be happy about a solution where the noise-creating material would get more render capacity!

ya, some sort of material flag or a "prioritize me" paint mask in mxcl would go a long way to even out render times. I have this LP cover that I'm rendering and the lamberts are all done well in advance of the SSS and translucent stuff and you can imagine that re-rendering a 3600x3600 image (even on this 8-core Mac Pro) isn't much fun on a deadline. so I've got all these separate passes to compose.

render region is in studion as well as the plugins..
it is very very easy to you, you loose no time at all. it is perfect for adding to such areas. you comp then in psd with 50%, as it has another noise it megres witht he image below and reduces noise. if you slightly feathere the part you see no border at all.

this procedure takes maybe 2 minutes to setup and composite, the rendertime you invest in extra the parts that needs it. i use that often, this works quite perfect.

cheers
stefan

you really should read before you post. what I've said at least twice: you lose all the time you spent on the mxi file already. When you are working on a 3600x3600 pixel image and have to re-render the SSS portions, that's BAAAAD.

and it's not in the Maya plug-in. when you hit render region, it tells you that it's not supported.

lllab wrote:render region is in studion as well as the plugins..

...not in sketchup

and studio doesn't load a mxs generated in from skp - so there's no render region possible

whoa - really? how is it that you can't open mxs files from Sketchup? if it generates a file that's readable by mxcl, it should be readable by mxstudio