hello,

i'm using a gem patch inside a pd~, in order to separate a huge computation, and the rendering of this process. But since i need pix_image/pix_data in the 1st process, i have to open 2 gem windows. only the 2nd one is visible.

i'm using export __GL_SYNC_DISPLAY_DEVICE=CRT-0 do have vsync on the external screen. (don't understand why nvidia-setting did not work any more for this)

my problem is that only the 1 gem windows is sync to Vblank. but i need the 2nd to be synchronize.

i could modify all my patch in order to have the rendering in the main pd patch and computation in pd~, but that would be a huge work.

So i'm looking for a way to force sync to Vblank for all openGL windows. (nvidia setting use to work for this, but did not anymore).