On Tue, 2007-06-12 at 12:35 -0700, Jesse Barnes wrote: > > [...] like Michel said, if only one pipe's vblank is > enabled, only the primary vblank counter should be updated (regardless > of *which* vblank count is enabled). But maybe that can be done at a > higher level, or maybe we can change that behavior and just make things > per-crtc as I've done with most of the code.
Yeah, the above is just an i915 specific attempt to provide backwards compatibility for old 2D and 3D drivers that didn't (fully) support vblank interrupts on both pipes. The current 2D driver only enables the interrupt on pipe B together with pipe A, and the current i915 3D drivers can handle it as well. That leaves the i965 3D driver for now. One way to prevent unsupported combinations from timing out could be for the driver enable_vblank hook to return failure when the CRTC is inactive and the core to return immediately in that case. -- Earthling Michel Dänzer | http://tungstengraphics.com Libre software enthusiast | Debian, X and DRI developer ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
