--- Michel Dänzer <[EMAIL PROTECTED]> wrote: > On Mon, 2003-07-14 at 00:34, Alex Deucher wrote: > > --- Michel Dnzer <[EMAIL PROTECTED]> wrote: > > > On Sat, 2003-07-12 at 00:24, Alex Deucher wrote: > > > > --- Michel Dnzer <[EMAIL PROTECTED]> wrote: > > > > > > 3D seems to work pretty well in mergedfb mode, but there > are a > > > few > > > > > > little issues, > > > > > > > > > > Can you elaborate on these? > > > > > > > > They are mentioned here: > > > > http://bugs.xfree86.org//cgi-bin/bugzilla/show_bug.cgi?id=276 > > > > but I'll elaborate. > > > > > > > > If you are running in mergedfb clone mode, and start an opengl > app, > > > the > > > > framebuffer on crtc1 shifts to the left a few pixels, as such > the > > > > cursor does line up properly with where it should be. crtc2 is > > > fine. > > > > closing the app and switching a away from the mode and then > back > > > fixes > > > > the shift. > > > > > > > > The other issue is that if you place a 3D app right between the > two > > > > heads so half is on one head and half is on the other and then > > > switch > > > > modes, crtc2 flickers badly and shows corruption almost like > the > > > sync > > > > is off. moving the app to one head or the other and switching > > > modes > > > > then switching back again seems to fix it. > > > > > > Sounds like bugs in the CRTC register handling, I suppose these > only > > > happen with page flipping enabled? > > > > Yes this only happens when pageflipping is enabled. swapping the > order > > of the crt2_base code in RADEONDoAdjustFrame() as you mention later > > fixes the corruption on CRTC2 when you have pageflipping enabled > and > > you change modes, > > Cool, thanks for testing this.
No problem. Thanks for finding it. > > > however, the framebuffer on crtc1 is still shifted a few pixels to > > the left when you run an opengl app in clone mode. side by side > > modes work fine. everything works fine with pageflipping disabled. > > Hmm, for a second I thought I had botched the RADEON_CRTC_OFFSET > calculation in the DRM as well, but it looks to me like it should be > identical to that in RADEONDoAdjustFrame(). Agreed? I would think so. Should the patch be applied with or with out swapping the two if statements in RADEONDoAdjustFrame()? I assume with? Also what does radeon_state.c end up being linked into? the kernel module? I'll recompile and give it a test. > > > One other issue, while I'm thinking of it, when you are using a > side by > > side mode in mergedfb, when the cursor is about 1/3 of the way > across > > crtc2, the cursor shows up on the far left side of crtc1, > everywhere > > else works fine. > > No idea about this, I'd ask Hui Yu or Kevin E. Martin. Yeah, I'll shoot them an email. > > > > > > I'm trying to understand how this would work. with the driver > as it > > > is > > > > now, if you create a single 3D window greater than 2048 in > either > > > > dimension, it will only display up to 2048. now, again with > the > > > driver > > > > as it is now, if you displayed two 3D windows with a total size > of > > > > greater then 2048 in one dimension would/should it work? > > > > > > That's what someone needs to find out. :) If that works, then the > > > cliprect split trick should work as well. > > > > Alas, it doesn't work. If run two apps side by side both display > fine > > up to 2048. if you cross the 2048 boundry, the 3D window that > crosses > > it goes blank. :( looks like we may not be able to go above 2048 > for > > 3D. > > It's not clear to me what exactly you have tried, please describe in > more detail. I created a virtual framebuffer of size 2080x480. I then started an instance of glxgears and resized the window to about 3/4 of the size of the frambuffer. I then started a second instance of glxgears and placed it next to the first instance, then resized it. it resized fine until I hit the 2048 boundry, then the window (the one I was resizing), went black; the first window was still showed gears. resizing smaller, the gears came back when I crossed the 2048 boundry again. Alex __________________________________ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com ------------------------------------------------------- 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
