kicad-developers team mailing list archive

[Andrey Kuznetsov <kandrey89@xxxxxxxxx>]

Remember about OpenGL and MacOS:
https://appleinsider.com/articles/18/06/04/opengl-opencl-deprecated-in-favor-of-metal-2-in-macos-1014-mojave

On Tue, Aug 28, 2018 at 2:40 PM, Jeff Young <jeff@xxxxxxxxx> wrote:

> >> My solution would be to stick to OpenGL with hardware antialiasing.
>
> To my knowledge none of the Mac graphics cards have an issue with OpenGL,
> so this is also my plan.
>
> Cheers,
> Jeff.
>
>
> > On 28 Aug 2018, at 22:32, Tomasz Wlostowski <tomasz.wlostowski@xxxxxxx>
> wrote:
> >
> > On 28/08/18 19:55, Seth Hillbrand wrote:
> >> OK.  Then, you should be able to scale the cairo context by 0.5 and draw
> >> individual pixels instead of 2x2 blocks.
> >
> > It doesn't work this way on OSX. If you want smooth graphics, you either
> > have to request a full resolution framebuffer (see
> > common/gal/hidpi_gl_canvas.cpp) or use Quartz for drawing. Since Cairo
> > in Kicad renders to memory and then copies to framebuffer, if the FB's
> > resolution is downscaled by 2 by Apple, the output will be blocky.
> >
> > My solution would be to stick to OpenGL with hardware antialiasing.
> >
> > Tom
> >
> >
> >>
> >> -S
> >>
> >> Am Di., 28. Aug. 2018 um 10:35 Uhr schrieb Jeff Young <jeff@xxxxxxxxx
> >> <mailto:jeff@xxxxxxxxx>>:
> >>
> >>    Scratch that last comment; I got myself tied in knots.
> >>
> >>    It is Cairo that renders blocky.
> >>
> >>
> >>>    On 28 Aug 2018, at 18:29, Jeff Young <jeff@xxxxxxxxx
> >>>    <mailto:jeff@xxxxxxxxx>> wrote:
> >>>
> >>>    Interesting.  It’s not Cairo.
> >>>
> >>>    We currently have EDA_DRAW_PANEL_GAL hard-coded to OpenGL, so it’s
> >>>    actually OpenGL that’s rendering blocky….
> >>>
> >>>
> >>>>    On 28 Aug 2018, at 18:11, Jeff Young <jeff@xxxxxxxxx
> >>>>    <mailto:jeff@xxxxxxxxx>> wrote:
> >>>>
> >>>>    Hi Seth,
> >>>>
> >>>>    The scaling comes out correct, it’s just blocky.
> >>>>
> >>>>    Is there some way to adjust what Cairo thinks the screen
> >>>>    resolution is and then re-scale the canvas so that everything
> >>>>    comes out the same again?  I don’t know.
> >>>>
> >>>>    Cheers,
> >>>>    Jeff.
> >>>>
> >>>>
> >>>>>    On 28 Aug 2018, at 18:06, Seth Hillbrand <seth@xxxxxxxxxxxxx
> >>>>>    <mailto:seth@xxxxxxxxxxxxx>> wrote:
> >>>>>
> >>>>>    Can we just use cairo_scale to adjust the axes for Mac retina?
> >>>>>
> >>>>>    -S
> >>>>>
> >>>>>    Am Di., 28. Aug. 2018 um 09:59 Uhr schrieb Jeff Young
> >>>>>    <jeff@xxxxxxxxx <mailto:jeff@xxxxxxxxx>>:
> >>>>>
> >>>>>        JP made the Footprint Wizard Cairo-only recently, and I
> >>>>>        planned to do the same for the Eeschema dialog previews.
> >>>>>
> >>>>>        However, I’ve just discovered that Cairo doesn’t handle
> >>>>>        Retina displays on Mac.  (It essentially draws blocks of 2x2
> >>>>>        pixels instead of individual ones.)
> >>>>>
> >>>>>        Anyone know if this is something we can fix, or if we need
> >>>>>        to use OpenGL on Mac?
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> >>>>
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> >>
> >>
> >>
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> >>
> >
>
>
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-- 
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Those who look only to the past or the present are certain to miss the
future [JFK]

kandrey89@xxxxxxxxx
Live Long and Prosper,
Andrey