Thanks for your advices ! I've tested the uniform one by changing the shadow technique shader and it works great.
Cheers, On Thu, Jun 25, 2009 at 4:28 AM, Jean-Sébastien Guay < [email protected]> wrote: > Hi Serge, > > Anyone knows if there is a way to force an object to not receive the >> shadows ? Even with a "dirty" method (reseting it's tex coords on the >> drawable or something like that). >> > > Wojtek is right (of course, having implemented some of the ShadowMap > techniques in OSG, he would know), ReceivesShadowTraversalMask is typically > not used in ShadowMap techniques, as it would be a bit hard to implement > generally. > > What we do is we have a uniform ShadowEnabled which if disabled skips the > shadow map lookup in the shadow map shader. For this to work you have to > replace your shadow technique's shader with one that will use whatever > uniform you set, and you need to set a uniform to false (and make it default > to true in your root ShadowedScene) instead of using the > ReceivesShadowTraversalMask. > > So it's a bit inconvenient, you have two different ways of doing things - > CastsShadowTraversal mask to make something not cast shadows, and a uniform > to make it not receive shadows. Though it's kind of appropriate if you think > about it, the former is "do I use this object for shadows", and the latter > is "do I use the shadows on this object", so intuitively the former is a > node mask and the latter is a shader parameter for the output. > > Hope this helps, > > J-S > -- > ______________________________________________________ > Jean-Sebastien Guay [email protected] > http://www.cm-labs.com/ > http://whitestar02.webhop.org/ > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- Serge Lages http://www.tharsis-software.com
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