The Retina display is basically two things: 2x the resolution, and smart anti-aliasing that takes advantage of knowing what order the RGB sub-pixels are in. (For instance, if you want to move a white dot 1/3 of a pixel to the left, you can do that by turning on the B sub-pixel of the previous pixel, and the RG sub-pixels of the current pixel. This of course only works on the horizontal axis, but that’s where you need it for text.)
Cheers, Jeff. > On 28 Feb 2018, at 10:20, Mário Luzeiro <mrluze...@ua.pt> wrote: > > Hi Andy, > > This most probably sounds to me as "it is working as expected". > Raytracing rendering method is consider to be an "offline rendering" (means, > it will take a lot and you can go offline for a coffee and back after a while) > > However for simple scenes I am not expecting such a long time. > Depending on the options I may expect just a few seconds for some scenes. > > My guesses, for developers to investigate are: > - Make sure KiCad on MacOS is build with OpenMP enabled and it is working. > This is very important to make rendering to work in parallel. > - Since Macs have that "Retina" thing.. could that be the screen resolution > is actually 4x (? I dont know how it works..) what it is displaying > (comparing to a regular display)? > > Mario Luzeiro > ________________________________________ > From: Kicad-developers > <kicad-developers-bounces+mrluzeiro=ua...@lists.launchpad.net> on behalf of > Andy Peters <de...@latke.net> > Sent: 27 February 2018 23:21 > To: KiCad Developers > Subject: [Kicad-developers] 3D Viewer "Render current view using Raytracing" > is ludicrously slow > > This is probably way low on the list of priorities … > > On a 2017 MacBook Pro (Retina, touch bar, 16 GB RAM, with the Radeon 555 > graphics), the "Render current view using Raytracing" is ludicrously slow, as > in it takes about a minute to render a “simple” design (front panel thing > with LEDs and buttons). > > I admit that I didn’t know what that blue cube in the 3D viewer’s toolbar was > for. I guess it’s really a tesseract. > > Anyway, it re-draws the display and then when you zoom or pan it reverts back > to the original rendering (which is quite fast). > > -a > > > > Application: kicad > Version: (5.0.0-rc2-dev-26-g0d794b2), release build > Libraries: > wxWidgets 3.0.4 > libcurl/7.54.0 LibreSSL/2.0.20 zlib/1.2.11 nghttp2/1.24.0 > Platform: Mac OS X (Darwin 17.4.0 x86_64), 64 bit, Little endian, wxMac > Build Info: > wxWidgets: 3.0.4 (UTF-8,STL containers,compatible with 2.8) > Boost: 1.61.0 > Curl: 7.43.0 > Compiler: Clang 7.3.0 with C++ ABI 1002 > > Build settings: > USE_WX_GRAPHICS_CONTEXT=ON > USE_WX_OVERLAY=ON > KICAD_SCRIPTING=ON > KICAD_SCRIPTING_MODULES=ON > KICAD_SCRIPTING_WXPYTHON=ON > KICAD_SCRIPTING_ACTION_MENU=ON > BUILD_GITHUB_PLUGIN=ON > KICAD_USE_OCE=ON > KICAD_SPICE=ON > _______________________________________________ > 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 _______________________________________________ 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
