[GEM-dev] problem with multiple windows and buffer 1 option

[IOhannes m zmoelnig]

On 10/27/23 14:46, cyrille henry wrote:
> Hello,
> I am experiencing a strange bug.
> See attachment.
> both patch works perfectly independently. But if I load both in the same 
> time, then drawing a primitive in the buffer 1 patch works only 90% of 
> the time.
> 
> can anyone reproduce this behaviours?
> (open the 2 patchs, create the 2 windows, play with primitive creation 
> on the buffer1 patch : sometimes, when banging the primitive manually, 
> it is not rendered.)
> 
> thanks for any suggestion.


sorry, i've missed this mail (not so much traffic on gem-dev these days :-)

i don't have an answer yet, but:
- the context sharing behaviour is *highly* dependent on the windowing 
backend. with [gemglxwindow] i get the behaviour you describe, 
[gemglutwindow] doesn't work at all and [gemglfw3window] is somewhere 
inbetween.
- clearing the single-buffered buffer (banging the [gemwin]) before 
writing to it always appears to work (but of course, this is not what 
you want)

gmasdr
IOhannes
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