kicad-developers team mailing list archive

[Jon Neal <reportingsjr@xxxxxxxxx>]

No, the default is the "legacy" renderer is an XOR based renderer.

Cairo is similar to OpenGL renderer in that it is a renderer for GAL. I
think it is F12? Dunno, look in the view menu for that.
On Nov 8, 2015 20:51, "Stefano Rossi" <chimera.stefano@xxxxxxxxx> wrote:

> Is Cairo not the default? I thought that was the default one. It was laggy
> and slow. F11 gave me the GL one.
>
> On Sun, Nov 8, 2015 at 5:59 PM, Jon Neal <reportingsjr@xxxxxxxxx> wrote:
>
>> As far as I know the plan is to completely replace the legacy canvas with
>> the GAL setup. This is both the OpenGL renderer and the Cairo renderer. You
>> are correct that not all of the features from the legacy canvas have been
>> implemented in GAL, but has come a long way! Not sure of a timeline from
>> the CERN devs for finishing it out (or if that is on their roadmap at all
>> right now). It really isn't too bad to add the missing features to GAL,
>> I've done one or two myself. :)
>>
>> In my opinion the cairo renderer really needs some speed improvements
>> before KiCad switches entirely to GAL. There are still too many systems out
>> there that don't support OpenGL 2.1 and need the cairo renderer.
>>
>> Jon
>>
>> On Sun, Nov 8, 2015 at 4:43 PM, Bernhard Stegmaier <
>> stegmaier@xxxxxxxxxxxxx> wrote:
>>
>>> Hi,
>>>
>>> is there any roadmap/plan for how to go on with the three canvases in
>>> pcbnew after the stable release?
>>>
>>> With the last PCB I made recently I noticed that for whatever reason the
>>> redraw problems/artefacts with default canvas on OSX got much worse
>>> compared to my last board made maybe one year ago. The redraw key is your
>>> best friend… :(
>>> Also, there seem to be some/many complaints about performance, which is
>>> no real surprise given that drawing without XOR is more or less only a
>>> workaround and still the only real issue why you can’t use a stock
>>> wxWidgets (it still doesn’t support the needed overlay drawing).
>>>
>>> I used the OpenGL canvas due to that for the first time and it is really
>>> nice - but, as discussed already some times some things are
>>> (intentionally?) different, IMHO some features from default canvas are
>>> still missing, while other features like the interactive router are only
>>> available there… kind of an in-between situation.
>>>
>>> While the redraw issues could probably be fixed with some well placed,
>>> OSX-only forced redraws (maybe again decreasing performance), the
>>> performance issues would probably be much harder to optimise.
>>> Recently also somebody mentioned on the ML that gtk3 also doesn’t
>>> provide a XOR drawing any more, so if there are any ideas to switch to gtk3
>>> all other platforms would suffer the same problems.
>>> So, is there any point in wasting time still adding workarounds to the
>>> default canvas or should the focus be on getting rid of all but one (the
>>> OpenGL) canvas?
>>>
>>>
>>> Regards,
>>> Bernhard
>>>
>>>
>>>
>>>
>>>
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>>
>>
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