Hello Fred,
In few words I'd like to know how I can retrieve the depth texture
corresponding to a spot light so I could implement light occlusion and light
focusing.
Of course you can, that's how shadow mapping techniques work. You place
a camera at the position of the light, set it up so it matches the
light's parameters (directional light --> ortho projection, spotlight
--> perspective projection, point light --> 6 perspective cameras in a
cube map texture) and then render to a depth texture so you can use that
result afterwards in your main pass.
I suggest you have a look at the shadow techniques in the osgShadow
namespace. I guess osgShadow::ShadowMap might be the easiest to
understand. Most shadow techniques make assumptions though, so they
might limit what light source types you can use them with etc.
Hope this helps,
K-S
--
______________________________________________________
Jean-Sebastien Guay jean-sebastien.g...@cm-labs.com
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