problem with using two screens

hi all,

what would be the method display a texture on two screens simultaneously? i render into the texture at 60 fps on the first screen.

i have tried everything for a week now and i can't figure it out how to do it properly.


the first screen shows everything with 60 fps but when i copy the rendered texture to another texture to display it on the second screen it only stutters.

the profiler shows that the draw command waits (and blocks) for a drawable on the second screen. so it skips frames. but i don't acquire them early or anything. the command only draws a quad with the texture.#

what could be the problem? or is it an macOS bug?


best

joerg