how to use geometry as a light source ?

Forums Technical Discussion how to use geometry as a light source ?

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flyingc: Member; 160 posts; Joined:; オフライン

2009年6月9日 19:23

hi

I use sphere sop create several balls,and want to make them glow and illuminate the scene

how to do it?


stevenong: Member; 1634 posts; Joined: 7月 2005; オフライン

2009年6月10日 4:41

Hi,

Please check out this thread [sidefx.com].

Cheers!
steven


flyingc: Member; 160 posts; Joined:; オフライン

2009年6月10日 18:52

thank you

but if only use light shader without GI,is there any way to make any geometry emit light?


jason_iversen: Member; 13003 posts; Joined: 7月 2005; オフライン

2009年6月10日 20:19

No, you need to use GI or PBR if you want geometry to emit light.

Jason Iversen, Technology Supervisor & FX Pipeline/R+D Lead @ Weta FX
also, http://www.odforce.net [www.odforce.net]


tamte: Member; 9402 posts; Joined: 7月 2007; オフライン

2009年6月11日 5:52

i think it is possible with light instancing
either on geo points or scatter new points on surface and instance lights on them
i am not sure about speed however, it can be really slow with many lights, or?

Tomas Slancik
CG Supervisor
Framestore, NY


flyingc: Member; 160 posts; Joined:; オフライン

2009年6月12日 11:08

thank you everyone

this video is the reference effect.

http://www.vimeo.com/2133774 [vimeo.com]

the comment is :Rendered with Micropolygon Rendering in Mantra and Ray-Traced shadows

but how to achieve the result? i have no idea still.

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