CGTalk - problem with H/W particles

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Tolerate

07-19-2002, 08:59 PM

I'm working on a crash scene with loads of H/W particles being kicked up when the ship hits the ground.

I've got the shading the way i like it and have cached the particles. I'm compsiting it in Shake but have come up with a problem.

This is how it renders.

http://www.btinternet.com/~scorpy/Ship_Crash/snow_render.jpg

This is what it looks like after compositing it.

http://www.btinternet.com/~scorpy/Ship_Crash/snow_comp.jpg

Obviously the colour doesn't seem to be coming through properly.

I'm asking in here because I thought a quite a few people here might use Shake as well as Maya. Anyone knows of a of a stucture in Shake that would help, that would be greatly appreciated.

These are the proper renders so You can try it with the final images if you want.

Background Pic (http://www.btinternet.com/~scorpy/Ship_Crash/Ground.35.tif)

Snow Pic (http://www.btinternet.com/~scorpy/Ship_Crash/Snow_01.0035.tif)

Sorry if this is the wrong forum, feel free to move it to the appropriate forum

Thanks in advance

svenip

07-19-2002, 09:16 PM

so for me it's nothing wrong with the images or so. it's just that the brightness of the two images is very high. i've put a collor correct on the particles with red. where you can see that with a color change the particles looking good.

Tolerate

07-20-2002, 11:58 AM

Thanks for your help, but I was wanting to keep the colour the way it is, I've messed around with the color correction and brightness but when I lower the brightness, it becomes more transparent.

If I invert the rgb of the background then the snow is fine, but obviously the colour of the background is all wrong.

I think it is to do with the way Maya renders it H/W particles, I'm literally wanting to find a way to just composite the snow over the background with Shake changing the colour, if thats possible.

-wT-

07-21-2002, 07:01 PM

To me, it looks like Shake would be doing something like adding the two pictures togeather, like adding those two pictures, so obviosly if you add that white snow on top of the white'ish background, it blows out all white...
I can't be sure if this is the case, but that's what it looks like to me?

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