Michel Dänzer wrote:
What "clobbering" is allowed can be inferred from the GLX specification. If you overlook DBE for a second, I believe we are meeting the requirements of the spec, so I wouldn't say we're "broken".On Die, 2003-01-07 at 23:00, Jens Owen wrote:Michel Daenzer wrote:Wow, you found the source of the corruption? That's worthy of a posting to dri-devel...CVSROOT: /cvsroot/dri Module name: xc Repository: xc/xc/programs/Xserver/hw/xfree86/drivers/ati/ Changes by: mdaenzer@sc8-pr-cvs1. 03/01/07 13:21:52 Log message: Use shadowfb instead of mi shadow to fix 2D corruption when page flipping is enabled.
True, I posted about it on December 14th and asked for testing, sadly I didn't receive any reports.I'm a little confused here. By traditional method are you referring to not using page flipping?This doesn't help mixed OpenGL and X11 rendering in the same window, but that supposedly doesn't work with the traditional method of drawing to the back buffer and then copying it over the front buffer either, so enable page flipping by default.Yes.What doesn't work in that method?The X server always renders to the front buffer, so when you mix OpenGL and X11 rendering, the former clobbers the latter when rendering to the back buffer.
Now, if you want to include DBE, then the current "traditional" implementation is technically broken.
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