mental Ray composite

Maya for 3D Printing - Rapid Prototyping

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# 1 25-01-2006 , 10:57 PM

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Location: London

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i have made a spitfire
i have assigned a dielectric material to it and it is lit by hdri
i want to composite it so i want the red colour diffuse to appear on my composite but i cant get it to work it always has transparent spots in it making it look crap and makes a lot of work to clean up ne ideas how to get it to include the diffuse

go to my link where u will see a clean version and an unclean one so u can see ne 1 know how to get around this.? alsosome of the other pics show this diffuse that im after later in the gallery
linky

thx
p.s check out the rest of my work

Now at SMU doing BSc 3D Computer Animation so its hard to get on here
My wire render tut https://forum.simplymaya.com/showthre...threadid=20973

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# 2 26-01-2006 , 01:57 AM

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mental ray materials are not good with composites,
sorry!

Environment Artist @ Plastic Piranha
www.joopson.com

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# 3 26-01-2006 , 01:22 PM

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try changing over to a blinn and haveing a go with that.

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# 4 26-01-2006 , 06:35 PM

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damm cos i like the colour diffuse u get on the floor with MR nodes and the sort of see through/ translucent effect u can get wiv it

i will try a blin but i dont think it will look quite as good
ne other suggestion out there?/
thx

Now at SMU doing BSc 3D Computer Animation so its hard to get on here
My wire render tut https://forum.simplymaya.com/showthre...threadid=20973

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# 5 26-01-2006 , 09:41 PM

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I've never done any comp'ing, but why shouldn't you be able to use MR?! user added image

Liter is French for 'Gimme some ****ing cola before I break vous ****ing lips!"

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# 6 26-01-2006 , 10:02 PM

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well, ill try to figure it out pbman

Environment Artist @ Plastic Piranha
www.joopson.com

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# 7 26-01-2006 , 10:13 PM

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thx for looking into it

some more info for u lot though
usually wen i comp i use use background shader so i have shaddows on this - however due to hdri image it just becomes 100% relective with relection of hdri image and reflection of model on it NOT the colour diffuse. this is beacuse background shader as far as i know cant be used with raytracing and only with depth map. NOW to do hdri and colour diffuse i need raytracting AAAAAAAAAAAAHHHHHHHHH!!! :headbang:
this means i am relly stuck in a hole too deep for me to get out of alone. ne1 know another way cos there must b if they use this for professional work

thx ppl :attn:

Now at SMU doing BSc 3D Computer Animation so its hard to get on here
My wire render tut https://forum.simplymaya.com/showthre...threadid=20973

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# 8 27-01-2006 , 01:08 PM

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Have you tried rendering in layer passes and seeing what the outputs are?

You should be able to get what you want from these and then possibly use the alpha channels as masks to get the parts you want, then composite it.

Is this for your spitfire?? How are you gping about setting up the scene for the render cos you might have a problem here???

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# 9 27-01-2006 , 05:17 PM

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i will try layer passes but i need to pratice these first
the scene is basicly the spitfire model in sub divs and th hdri image is added un render globals - it is not a sphere wiv normals changed to fave inwards
ermm. the floor is a poly plane and so far i have tried using a lambert shader and a use backgrounfd shader
l8 i will post up a pic of my alpha channel that i am getting so it may become more clear for u guys

thx

Now at SMU doing BSc 3D Computer Animation so its hard to get on here
My wire render tut https://forum.simplymaya.com/showthre...threadid=20973

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# 10 27-01-2006 , 08:16 PM

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layer passes dont work it just doesnt come up with the red colour diffuse underneath that i want
not unless theres a setting i need that i missed.
will post up alpha wen i get it
i have managed a slightly better one by saving it in tiff rather than targa but still not very good
:headbang:
ne ideas
has be 1 had this problem for their work?

thx

Now at SMU doing BSc 3D Computer Animation so its hard to get on here
My wire render tut https://forum.simplymaya.com/showthre...threadid=20973

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