> Is it possible to invert the process? I mean: is it possible to write a > custom OpenGL macro M that receives vertices from the OpenGL-patches inside > it? For example, if I render a quad Q with LG Quad kineme patch and put it > into M, is it possible to 'catch' Q vertices inside the custom macro M and > shade them as I want? One possible use of this process is a possible > shadow-mapping implementation..
In QC, there's no supported way to create a custom patch that allows subpatches. So there's no way to create M right now. Outside of QC, the only way to capture vertices that I'm aware of is to use the Transform Feedback extension. That should allow you to "record" vertices for later reuse. (This is also handy to filter a mesh through multiple vertex shaders, for example). _______________________________________________ Do not post admin requests to the list. They will be ignored. Quartzcomposer-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/quartzcomposer-dev/archive%40mail-archive.com This email sent to [email protected]
