On 9/21/2011 10:54 AM, Sebastian Messerschmidt wrote:
Hello,
I've have a question regarding RenderToTexture in a multipass setup.
I have to RTT cameras, the first one has DEPTH and 3 color attachments, while
the second has only one color attachment.
I need to use the data from the first RTT-pass in the second camera, so the
renderorder is set accordingly.
Basically my scene is organized like this:
root
|
RTTCamera_1
| |----Model
RTTCamera_2
| |----Model
Booth cameras use the same geometry, viewport, transform. Yet the Model graph
is culled twice.
Is there any way to prevent the second cull traversal? I.e. reuse the batch
collected in the first culling?
In OSG, culling (the CullVisitor) also collects state. Since you are almost
certainly using two different shaders (one that writes to three targets, another
which writes to one), it's unlikely that OSG's state graph can be reused in your
situation.
-Paul
_______________________________________________
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
