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View Full Version : Fast and easy soft shadow-mapping



-Ekh-
02-11-2009, 03:57 AM
Hi,

I was searching for soft shadow-mapping here and over the net. But I did not find something easy or fast enough for me. The most interresting thing I found is at this link:

http://www.gamedev.net/reference/articles/article2193.asp

But it is under Directx and I really don't know how to blur in OpenGL, and I even don't know if it will be fast enough or if it will be good enough. I mean for closed or far shadows or for little or big objects, simple or complicated ones.

The current shadow-mapping I have is quite good, the shadow limits are also quite soft for long walls. But as soon as the geometry is small and complexe everything becomes a bit uggly.

I really hope to get good advices.

Brolingstanz
02-11-2009, 03:20 PM
"fast, pretty and easy" is a contradiction in terms ;)

Great rundown of the prevailing techniques here

http://developer.download.nvidia.com/presentations/2008/GDC/GDC08_SoftShadowMapping.pdf

P.S. You can always use Cg/CgFX as a bridge from DX to the GL world. HLSL/FX files seem to compile pretty much as is, while your current GL plumbing (buffers, textures, render targets, etc.) remains in tact. It's one way to flatten the learning curve, anyway.