[osg-users] VBOs not actually used?

Paul Melis paul at science.uva.nl
Thu Mar 12 07:42:47 PDT 2009


Paul Melis wrote:
> Paul Melis wrote:
>> Similarly, the attached c++ test case is more in line with our 
>> original code. It uses a color array that is updated each frame. The 
>> array is flagged as dirty with a call to dirty(), but here also, no 
>> VBOs seem to get used.
> Forgot to mention that the original symptom we had was that the 
> dirty() call on the color array did not update the rendering. There 
> are fairly recent posts on osg-users that suggest that that call 
> should be enough, but we could not get it to work, hence the 
> simplified test case.
And to rule out that the opengl tracer is at fault here I just tried a 
very simple VBO example (http://www.songho.ca/opengl/gl_vbo.html) and 
when run the call trace indeed show relevant OpenGL VBO calls...

Paul




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