Hi all,
I want to create some points in a geometry. OK, they are perhaps more
than "some" points, they are exaktly 2048x2048 points, which are over 4
Million points in one geometry. The points are particles and until now I
was calculating their positions in an fbo texture with a shader. That
all works fine with about 1 million particles, where 1024x1024 is the
size of the image and the fbo texture which is the render target. So
2048x2048 is the next possible size for power-of-2 textures. With these
sizes the power-of-2 textures have the best performance.
Now, there are some problems with 4 million points:
I have 2 errors on 2 different computers.
The first computer with 2GB RAM has a Geforce 7600GT. The error is that
the Image class tells me, that it is not possible to allocate 64MB
memory, which is the texture size 2048x2048 with 32bit float RGBA values.
The second computer with 4GB RAM is much faster with a 8600GTX. It tells
me the following error:
Geometry::handleGL: couldn't create display list (out of memory)
skipping geometry ...
Does someone have any ideas about this?
I know that I'm working at the limits of OpenSG and graphics hardware,
but perhaps there's someone, who can help me.
Otherwise it wont work. Unfortunately!
regards,
Oliver
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Opensg-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/opensg-users
