kicad-developers team mailing list archive

[Jeff Young <jeff@xxxxxxxxx>]

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 <mrluzeiro@xxxxx> 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.pt@xxxxxxxxxxxxxxxxxxx> on behalf of Andy Peters <devel@xxxxxxxxx>
> 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
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