Hello Gerrit, On 06.04.2011 01:34, Gerrit Voß wrote: > Hi, > > On Tue, 2011-04-05 at 16:16 -0500, Aron Bierbaum wrote: >> After spending the afternoon looking through this it appears that IMHO >> OpenSG might [1] be doing something incorrect. Here is what I think is >> going on: >> >> >> When a geometry core is being processed with a shader material, it >> forces the GeoVertexArrayPumpGroup to use the generic attribute >> functions glVertexAttribPointer instead of the older >> glVertexPointer/glNormalPointer equivalents. Since we are using the >> generic attribute functions, I believe that we need to call >> glBindAttribLocation in order to access these values in the shaders. >> >> >> So I believe that I can't access the texture coordinates using the old >> gl_MultiTexCoord0 attribute because OpenSG is using >> glVertexAttribPointer instead of glTextureCoordPointer. Also I can't >> access the vertex attributes using a user-defined attribute because >> OpenSG doesn't allow me to specify the attribute indices in the SHL >> chunk using glBindAttribLocation. >> >> >> Does this sound correct? If it is this would essentially mean that >> things are only currently working on NVIDIA hardware because the >> driver still binds the gl_MultiTexCoord0 attribute to "generic" >> attributes at index/slot 8. >> > yes, there is a problem with the aliasing on ATI Hardware / OSX, > as said in the thread Josef referenced. > For OSX the workaround was easier as the problem is independent of > the hardware. For the ATI part I'm looking into a workaround as the > full solution will take longer. I also have a strange Problem with OSX where geometry disappears. On Win7 everything works fine. Can you give me a hint what your workaround is about? Perhaps it can help me with my problem.
Best regards, Marcus > kind regards > gerrit > > > > ------------------------------------------------------------------------------ > Xperia(TM) PLAY > It's a major breakthrough. An authentic gaming > smartphone on the nation's most reliable network. > And it wants your games. > http://p.sf.net/sfu/verizon-sfdev > _______________________________________________ > Opensg-users mailing list > Opensg-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/opensg-users > > ------------------------------------------------------------------------------ Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev _______________________________________________ Opensg-users mailing list Opensg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opensg-users
