shaderGlow quality ?

# 1 26-03-2012 , 02:49 PM

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Join Date: Jan 2005

Location: vienna

Posts: 1,095

ahoi!

is there any chance to boost up the shaderGlows quality? I´ve already risen the quality from 1 to 100, still no improvement to see in my opinion. is the only chance to get a smooth glowing result to render an extra framebuffer for the shaderGlow and blur it in the post?

thx!

everything starts and ends in the right place at the right time.

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# 2 26-03-2012 , 03:31 PM

Technical Director
Join Date: Feb 2004

Posts: 2,988

Hey Falott, good to see you again. Are you in mental ray or software? Have you tried playing with the threshold?

Imagination is more important than knowledge.

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# 3 26-03-2012 , 05:11 PM

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Hey there! user added image

Yes, I am in mental ray and played with threshold too. lowering the glowColor / increasing intensity made no difference. in the end the glow/halo always consits of same poorely distributed grain.

everything starts and ends in the right place at the right time.

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# 4 26-03-2012 , 06:38 PM

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Join Date: Feb 2004

Posts: 2,988

Could you send me a test file so I can take a look?

Imagination is more important than knowledge.

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# 5 26-03-2012 , 06:42 PM

The Nurb Herd
Join Date: Oct 2007

Location: London

Posts: 2,381

render an id and do the glow in post as you said.

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# 6 27-03-2012 , 02:15 AM

Technical Director
Join Date: Feb 2004

Posts: 2,988

render an id and do the glow in post as you said.

Originally Posted by honestdom

Cheater!

Imagination is more important than knowledge.

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# 7 27-03-2012 , 08:40 AM

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ok, here´s the testfile.

thx

Attached Files

glowTest.zip (24.0 KB, 203 views)

everything starts and ends in the right place at the right time.

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# 8 28-03-2012 , 10:01 AM

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after some more testing, things start getting complicated..

I tried to render a glowSource pass, which unfortunately turned out to be black.

another approach was to check hide source and render with material overrides so only the glowing stuff shows up. bad luck again because I need to render an interface which has its lighted buttons under a one cm thick plane of glas with different refraction and glossiness values. so hiding other objects in turn eliminates some important effects (refraction/reflection of the buttons in other materials).

if anybody experienced in such FX things would render the glow separately, how would you go and extract the post effect glow? does it even make sense to use maya´s shaderGlow? right now I can´t imagine any plausible way to do that other than bake the effect into the beauty pass right away (but with a lot of grain..) user added image