radeon/r200 color tiling ddx / drm questions

[Ian Romanick]

Roland Scheidegger wrote:

> The dri and drm seem fairly straightforward, though I'm not sure the way
> I handled communication between especially drm and ddx is how it's meant
> to be. dri got a bit unlucky, as ddx can't know at startup if it will be
> able to handle color tiling, so old dri together with new drm and new
> ddx will not work (correctly) (if you have enabled color tiling). All
> other combinations should however work if I didn't forget something.

If an "old" {radeon,r200}_dri.so is completely incompatible with the new 
DDX, you need to bump the major version.  When that happens the DRI 
driver will bail when you try to load it.