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In Topic: Why is Houdini switching to OpenGL 3.2 but not 4.3?
08 May 2013 - 06:19 AM
Fabian, on 08 May 2013 - 12:21 AM, said:
While on the topic of selection. I really appreciate not having to hit the points anymore when brush selecting. Beyond that, with the new ogl code, would it be a big issue now for brush selection to highlight selected polygons before mouse-up?
The main concern was the selection update speed; for extremely large models (in the 10's of millions of polys) the selection operation and the display of the highlight can really bog down the actual pick. GL drawing doesn't thread well either, so it's a bit challenging to do it asynchronously. Also, we ran out of time for 12.5, and stabilization was the main goal, with a dash of VDB.
It will likely make an appearance at some time in the future, with a display option to disable it and some heuristics to perhaps only do a highlight pick on huge models if the user pauses, or something along those lines.
Magnus Pettersson, on 08 May 2013 - 04:44 AM, said:
It was both. I dont remember what earlier version we tried but i know that one was a 304.XX but less than 88. And one was 310.XX. The 319.XX (one that is currently latest for many gtx cards from nvidia, including older quadro 3700 that we also got on some computers here) didnt work at all so clearly not supported driver for the quadro fx 4000.
Thanks. I will pass this along to support.
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Im testing on a GTX 680 now and happy to say that houdinis viewport outperforms maya (and maya 2.0 viewport) and blender in pure opengl performance. We did fps comparison on 10+ million poly sculpts from zbrush when moving around the viewport in different modes like wireframe, smooth shaded and smooth shaded with wires.. Also it was faster in selection speeds on both faces, points and edges (lasso + paint selection as well).
That's good to hear. There are more performance improvements coming for the next major version as well.
