Advanced Member popwfx Posted November 19, 2012 Advanced Member Report Share Posted November 19, 2012 Please help me understand 3DC a bit better. I'm trying to paint on a lowpoly object and if I just load the plane I want, 3DC performs very badly painting on just the surface when painting with materials. If however I load the same surface but have it a closed contiguous object like a block (so it has under and side and back and front bits - not just the block's top) then it performs better. See this attached pic to see what I mean. This is the model - I was just trying to load the top of it - but would prefer to keep the geometry how I need it. I don't want 3DC to create UV maps (or at least not much space on the map) for the non-top areas since they wont be seen from my camera anyway.. If I load just the selected polys here into a separate object and load that into 3DC it chugs badly when trying to paint. And it's not the video card or driver. Why is this so? thanks Quote Link to comment Share on other sites More sharing options...
Moderator Daniel Posted November 19, 2012 Moderator Report Share Posted November 19, 2012 what do you mean by "badly painting"? It's slow or not what you've expected? Quote Link to comment Share on other sites More sharing options...
Moderator Daniel Posted November 19, 2012 Moderator Report Share Posted November 19, 2012 mine's fine what version do you use? Quote Link to comment Share on other sites More sharing options...
Advanced Member popwfx Posted November 19, 2012 Author Advanced Member Report Share Posted November 19, 2012 sorry for not being clear. I mean very slow. As in, despite my normally speedy enough graphics card, painting on a plane (unclosed object) is much slower than on a closed object. I am using v 3.718f (though I did download and try v4Beta5 and experienced the same thing). Quote Link to comment Share on other sites More sharing options...
Moderator Daniel Posted November 19, 2012 Moderator Report Share Posted November 19, 2012 Actually, if your pixel density is equal in both cases then performance will be the same. So it's quite dependent of your texture size per UV island (pixel density) and brush size, of course. Quote Link to comment Share on other sites More sharing options...
Moderator Daniel Posted November 19, 2012 Moderator Report Share Posted November 19, 2012 In your case, when you load your solid model, the top part of it (the one that you need) covers only the fourth part of the UV texture! That's why you experience better performance with solid one! Quote Link to comment Share on other sites More sharing options...
Advanced Member popwfx Posted November 21, 2012 Author Advanced Member Report Share Posted November 21, 2012 Thanks that would make sense, but even with the same UV map the performance is slower on the open objects. Quote Link to comment Share on other sites More sharing options...
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