On Sat, 2003-07-12 at 01:51, Alex Deucher wrote: > --- Brian Paul <[EMAIL PROTECTED]> wrote: > > Alex Deucher wrote: > > > --- Brian Paul <[EMAIL PROTECTED]> wrote: > > > > >>Where does 2048 come from? There's no window size limits that I'm > > >>aware of. There is a GL viewport size limit, as mentioned above. > > > > > > > > > the radeon scissor registers are only 12 bits apparently, hence the > > max > > > cliprect is 2048x2048. Several users have noted that if they > > create a > > > 3D window of greater than 2048, it only displays stuff up to 2048. > > > > Ok, that's a problem. I wasn't aware of that hardware limitation, > > but > > I'm not surprised by it. Windows wider than 2K pixels arent' too > > common yet. > > > > Other hardare may have similar limitations.
Indeed, all the more reason for a generic solution. > > You better check if there are any other hardware limitations (such as > > scanline stride or pitch) before going too far. For example, if the > > scanline stride is limited to 2K pixels you won't be able to go any > > wider. As I said, hack it in and see... > Does anyone with Radeon/r200 databooks know what the limitations are in > regards to stride/pitch/etc? If there were such limitations, I wouldn't expect 3D rendering to work at all at larger framebuffer sizes. > there may also be issues with the 2D engine as the size of the framebuffer > increases. The 2D engine is limited to 8192x8192. The radeon driver is aware of this. (At least some parts are :) > BTW, what's the difference between XF86DRIGetDrawableInfo() > and friends in xc/lib/GL/dri/ vs. DRIGetDrawableInfo() and friends in > xc/programs/Xserver/GL/dri/? Client side vs. server side. -- Earthling Michel Dänzer \ Debian (powerpc), XFree86 and DRI developer Software libre enthusiast \ http://svcs.affero.net/rm.php?r=daenzer ------------------------------------------------------- This SF.Net email sponsored by: Parasoft Error proof Web apps, automate testing & more. Download & eval WebKing and get a free book. www.parasoft.com/bulletproofapps1 _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
