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:; Offline

June 9, 2009 7:23 p.m.

hi

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

how to do it?


stevenong: Member; 1631 posts; Joined: July 2005; Offline

June 10, 2009 4:41 a.m.

Hi,

Please check out this thread [sidefx.com].

Cheers!
steven


flyingc: Member; 160 posts; Joined:; Offline

June 10, 2009 6:52 p.m.

thank you

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


jason_iversen: Member; 12479 posts; Joined: July 2005; Online

June 10, 2009 8:19 p.m.

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; 8582 posts; Joined: July 2007; Offline

June 11, 2009 5:52 a.m.

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
FX Supervisor
Method Studios, NY


flyingc: Member; 160 posts; Joined:; Offline

June 12, 2009 11:08 a.m.

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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