> Well I think for this case the solution is simple: Tiling not allowed > if userspace is too dumb to properly round the buffer up so it > fulfills whatever odd requirement the hw has. I think hiding the fact > that certain buffers need more backing storage than a naive userspace > might assume is ripe for ugly problems down the road.
That depends a lot upon the interface. One good reason for hiding it for example is that if you have hardware where a limit goes away (or worse yet appears) in some rev of the device or an erratum you don't have to issue a new X server. For some of the other interfaces like the dumb fb api it's even more important the code doesn't know. I don't however think the helper should know about padding because I think a driver can implement its own function which wraps the helper and then adds the padding itself ? Alan _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel
