On Fri, Nov 01, 2013 at 05:35:10PM +0100, Maciej Sumiński wrote: > Groups are handled by rendering backends and are identified only by their > number (think of it as a handle) and there is a 1-to-1 relation between > group id and VIEW_ITEM/layer combination.
That makes suspiciously easy to use display lists or VBOs:P Another thing I've seen mentioned around: targets? Also I can't see a thing when I switch to cairo (my fault probably). > VIEW_GROUPs are particularly useful when drawing on the overlay layer > (destined for drawing temporary objects) and in that case you may need to > draw a single item layer by layer rather than drawing layer by layer, but > using all items. > For usual drawing of items, you should have a look at draw():607 - this is > where caching VIEW_ITEMs/redrawing groups happen. MMmmm more or less is clear. Could you check that loop anyway? otherwise I can't find a way to match types. Now at least it compiles and links, and that's a major step... however it... well... doesn't work exactly fine:D it seems that somehow the layer mapping got messed up so I can always see pads, for example, but never traces. Other things are correctly shown hidden... Some tracing required And now, for something completely different: there is a 'should not occur' condition which actually happens. In D_PAD::ViewGetLayers only the copper side of the pad is considered, and I'm not sure it's entirely correct: for example the first case considers pads on both front and back pushing in the requested layers both mask and paste (but I suppose that's only a slight inefficiency). Often however dummy pads are used for paste reduction or mask controlled openings. These are pads which resides in no copper layer. I think the best way to handle this function would be to loop over the pad layer mask and simply add the flagged layers. Of course the ITEM_GAL_LAYER entities would still need special treatment. -- Lorenzo Marcantonio Logos Srl _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp