On Thu, 2004-09-23 at 10:13, Jacek Rosik wrote: > Hi, > > Note, that what I'm writing is based on radeon driver. I haven't > investigated other drivers much. > > W liście z czw, 23-09-2004, godz. 01:13, Amir Bukhari pisze: > > Is the frontbuffer shared between all contexts, or for each Context there > > will be a different frontbuffer? > > > Yes, frontbuffer is shared between all context and X server. > > > In direct rendering I understand that frontbuffer point to the visible > > framebuffer of the card (write to screen). Using at the end the position of > > the window and its clips mask you will write to the frontbuffer > > (framebuffer), correct me if I am wrong please! > > > > Correct. Note that backbuffer is also shared by all contexts, but > drawables may have different clip rects for front and back because we > don't have 2d windows in backbuffer. > > Your goal is to redirect output of GLcore (indirect software renderer) > to pixmap, right? From my latest investigations of GLcore it seems that > it can use both windows and pixmaps as it's frontbuffer. I haven't tried > the latter but I think it'll work (I hope). I think You just need to > allocate pixmap and tell mesa to render to it. You don't have to worry > about backbuffer as it is always allocated in host's memory and not used > outside GLcore.
Yes, I want to redirect output of GLcore to pixmap. GLcore get it own framebuffer pointer from GLX - it did use the one defined in Window structure- and use clip rects to write to it, but when I a window is redirect with Composite, there is no clip rects, therefor it always write to framebuffer. As you said I will try to let GLcore to redirect output to pixmap. the problem I want to do this with Composite. I take a look now on how best Composite could communicate with GLX/GLcore. thanks for your answer, it help me more. > > BTW: I'm working on forcing GLcore to render into other parts of card's > memory than front buffer (specifically front right buffer). Maybe this > may be helpful. If I'll come up with workable solution I'll let You > know. Any pointers? > > best, ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php -- _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
