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How make shadows?

Started by all_names_taken Apr 7, 2006 at 6:15 AM 1 replies 900+ views

Original Post

Apr 7, 2006 at 6:15 AM

I'm not sure about all the steps required for making shadows in a game... 1. how obtain the correct silhouette for the shadow? 2. stencil buffers - what are they and where do they come into the picture? 3. do I send the shadow to a render target surface and apply it by using multi-texturing for the terrain where the shadow should appear?

kovacsp

Apr 7, 2006 at 6:26 AM

hi,

read these. when you're finished, you'll know the answers to your questions [smile]
The Theory of Stencil Shadow Volumes
An Example of Shadow Volume Rendering in DX9

kp

jollyjeffers

Apr 7, 2006 at 6:55 AM

It is worth noting that real-time shadows tend to be very difficult to get correct for ALL cases. Nearly every single algorithm has some limitations or special cases that stop it from being a completely generalised solution.

I posted links to several presentations from GDC'06 in this thread - several of them cover shadowing techniques.

hth
Jack

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