Do you know of a resource that explains how the buffers and drawing works? ALL my application does graphically is blit images once in a while, and blit them again when the images become modified, so it seems like there should be a very simple solution.
On Tuesday, April 21, 2015 at 2:04:26 PM UTC-4, claudio canepa wrote: > > I think pyglet uses double buffering, and your problem is that the buffer > state after swap buffers is generally undefined, see > http://gamedev.stackexchange.com/questions/7316/what-is-the-contents-of-the-buffer-after-a-call-to-glswapbuffers > > A possible way to sort it out can be: > . have a Framebuffer Object (FBO) as taget for your draws, > when you receive an on_draw blit the fbo over the screen > > hth > > > On Tue, Apr 21, 2015 at 12:57 PM, pyglet_has_bugs <justin...@gmail.com > <javascript:>> wrote: > >> Redrawing every image in my application in every call of on_draw takes >> too much time, so I updated my code to work the following way: >> >> Every time an image is modified, it is added to a queue. Every time >> on_draw is called, it iterates through the queue and draws each image. When >> the application loads, every image is added to the queue. window.clear() is >> never called. >> >> For some reason, the application keeps oscillating as I use it. After one >> update to one image, half of the displayed images vanish. After one more >> update to an image, all of the vanished images reappear, and the other half >> of them vanish. After one more update, all of the displayed images vanish, >> and the other half reappear again. I put print statements in the method >> that draws images, and it is only drawing one image every time I update an >> image. This implies to me that there are perhaps multiple graphics windows >> being drawn to. >> >> Any suggestions for where to look to fix this problem? >> >> -- >> You received this message because you are subscribed to the Google Groups >> "pyglet-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to pyglet-users...@googlegroups.com <javascript:>. >> To post to this group, send email to pyglet...@googlegroups.com >> <javascript:>. >> Visit this group at http://groups.google.com/group/pyglet-users. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "pyglet-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to pyglet-users+unsubscr...@googlegroups.com. To post to this group, send email to pyglet-users@googlegroups.com. Visit this group at http://groups.google.com/group/pyglet-users. For more options, visit https://groups.google.com/d/optout.
