Le 21/04/2016 16:25, Maciej Sumiński a écrit : > I got rid off the artifacts resulting from mipmapping, and I think the > branch [1] is ready for merging. Apart from bitmap fonts, there are also > a few other changes that should improve performance a bit. > > If there are no objections, I would like to merge the branch next week. > > Regards, > Orson
I just tested it. I have a serious issue when switching to OpenGL I have this error: Error: allocating video memory for cached container: invalid enum then VERTEX_MANAGER::Reserve: Vertex allocation error and Pcbnew crashes. I also noticed an issue for pcb texts: the vertical justification has changed: when changing the horizontal justification, the vertical justification is also changed. (This is a bug which break compatibility: currently the vertical justification is expected always centered) Thanks. > > 1. > https://github.com/orsonmmz/kicad-source-mirror/tree/cached_container_refactor > > On 04/14/2016 11:33 AM, Maciej Sumiński wrote: >> Hi, >> >> As recently Jean-Pierre has reported he had been running out of memory >> with complex boards, I decided to take another step to reduce memory >> footprint of OpenGL canvas. >> >> Currently, the most expensive thing to draw is stroked text, as there >> are lots of labels on tracks and pads. To reduce the drawing cost (and >> memory requirements), texts that are not targeted to Gerber files (i.e. >> pad & track labels) might be displayed using bitmap fonts. This way, a >> single letter cost is reduced from tens of triangles to just two. >> >> Another gain is we can select any font for this purpose and easily >> change it. I picked one for testing, but I think we have to decide >> together which one shall be used. Bitmap fonts are also antialiased (I >> am sorry Lorenzo), so they might be a bit easier on eyes. >> >> As texts now do not occupy as much memory space as they used to, they >> might be stored in the video card memory. Thanks to that, they might be >> displayed on selected items as well (in the past selected items had >> labels removed). This should also reduce per-frame traffic and make >> rendering process smoother. >> >> I did my best to use the same character set as is available with the >> original stroke font, but I wonder if it is really necessary. It seems >> that net/pad names are limited to latin characters, so maybe we should >> limit the character set. Thoughts? >> >> At the moment bitmap fonts are only available in OpenGL canvas, as I >> believe they offer the greatest performance boost there. I am not sure >> if Cairo can really benefit from such solution, but it might be tested >> as well. >> >> Before I push the changes to the master repository, I will be grateful >> for some testing [1] and feedback. There are also two screenshots [2, 3] >> to demonstrate the difference. >> >> Regards, >> Orson >> >> 1. https://github.com/orsonmmz/kicad-source-mirror/tree/bitmap_fonts >> 2. https://orson.net.pl/pub/original_font.png >> 3. https://orson.net.pl/pub/bitmap_font.png >> >> >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~kicad-developers >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~kicad-developers >> More help : https://help.launchpad.net/ListHelp >> > > > > > _______________________________________________ > Mailing list: https://launchpad.net/~kicad-developers > Post to : [email protected] > Unsubscribe : https://launchpad.net/~kicad-developers > More help : https://help.launchpad.net/ListHelp > -- Jean-Pierre CHARRAS _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
