Hi. I finally came up with the way to use OSG shadows in deferred shading. Since ShadowedScene produces the result in Screen space (same as other G-buffers), I can simply use it like a texture with shadows in Screen space. This is what I got: http://youtu.be/EzPe5dVwWrs
But looking at the incorrectly shadowed walls, I think I should not simply multiply shadow color with diffuse one, but instead check brightness and only multiply if it's high enough. Thanks. 2013/10/25 michael kapelko <[email protected]> > Hi. > I've decided to try to take shadow map from osgShadow::ShadowMap. I've > derived own ShadowMap class to access the shadow texture: > http://goo.gl/M3o04y > I display it, but it's completely white. I tried to place the light nearer > to the moving objects (even at the same height), but the texture is still > white. > What am I doing wrong? > Thanks. > > > 2013/10/21 michael kapelko <[email protected]> > >> Hi. >> Can the third bug be related to different view projection matrices? My >> shadow camera uses ortho. >> Thanks. >> >> >> 2013/10/21 Marcel Pursche <[email protected]> >> >>> Hi, >>> >>> the shadow on the wall is probably created, because the wall is outside >>> of the shadow cameras view frustum. How do you setup the wrapping of your >>> depth texture? You could fix it, if you set the mode to clamp to border and >>> set the border "color" to your far plane. This way everything that cannot >>> be seen from your light source will not be shadowed(as in is outside of the >>> view frustum). >>> The shadow on your torus looks like a self shadowing problem. You will >>> always have some errors because of the limited floating point precision. >>> You should use a small offset in your depth comparison to get rid of this >>> artifacts. A bit of tweaking will be necessary to get a good value. >>> The last bug is indeed a bit strange. I'm not sure how it is produced. >>> But it is view dependent, so it must have to do something with the view >>> matrix of your main camera. >>> >>> Thank you! >>> >>> Cheers, >>> Marcel >>> >>> ------------------ >>> Read this topic online here: >>> http://forum.openscenegraph.org/viewtopic.php?p=56910#56910 >>> >>> >>> >>> >>> >>> _______________________________________________ >>> osg-users mailing list >>> [email protected] >>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>> >> >> >
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