Hello all and happy new year, At the UM3D Lab we're migrating to OpenSG 2.0 and as a first step have implemented some advanced lighting methods akin to deferred shading and what Crytek released as "Massive Lighting." The work was successful and running well, but we ran into two limitations of the OpenSG 2.0 architecture which made this more difficult than it needed to be and needed to be worked around.
1) there currently is no support for rendering into a 3D texture. the framework seems to be there but it's lacking the functionality. Are there plans on adding this? We're currently using slices (many textures) to get around this but missing out on the many benefits of 3d textures (sampling, cache coherency, etc.) 2) we ran into a problem with rendering into a texture where the same texture couldn't be used for multiple stages of a process. Ideally we'd like to be able to render into one texture and use it again in the same frame. For example, we write to texture 1, then use texture 1 to write to texture 2, then we want to use texture 2 to write to texture 1 again. However, when we try to read from texture 1 after this, the contents are the results from the first time the texture was written to instead of the second time. To get around this we basically use additional sources which leads to lower memory efficiency and some excess. Are these known limitations of 2.0 or did we miss something? Thanks! E. --- Eric Maslowski Technical Creative Consultant University of Michigan 3D Lab e: emasl...@umich.edu p: 734-615-9699 w: http://um3d.dc.umich.edu ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Opensg-users mailing list Opensg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opensg-users
