Re: [osg-users] Render to 3D texture example and questions

[hesicong2006]

I think another way should be possible: Only one RTT camera, under it there are 256 pieces of slice to render. When render Nth slice, change RTT camera's Z index to N. Is it possible to use osg::StateSet to do so? Ulrich Hertlein wrote: Hi, Quoting hesicong2006 <[EMAIL PROTECTED]>: But I found it has very slow performance. In this example, with 256*256*256 3D texture, only 8 fps was show on my 8800GTS 320M. I see Keep in mind that you're rendering 256 cameras (i.e. separate images) every frame. Apart from maybe re-using Geodes or using Geometry instead of ShapeDrawable there's nothing that leaps out. Are you runnin debug mode? I'm getting 19fps, cull=2ms, draw=49ms on a GeForce 8600M (Mac OSX). /ulrich

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