[PATCH dri3proto v2] Add modifier/multi-plane requests, bump to v1.1

[Keith Packard]

Michel Dänzer <michel at daenzer.net> writes:

> Declaring where? Once a pixmap is created, it only has a depth, no
> format, so there's nothing to base on that e.g. CopyArea between two
> pixmaps of the same depth is undefined.

I think we'd need some extension request which provides the format data
and other attributes. We can define the transformation of underlying
data into depth-based pixel data to match core drawing.

> I'm getting less and less convinced that any reference at all to formats
> in the context of pixmaps in the DRI3 specification is a good idea.

Well, if we want to deal with YUV or compressed data, then we'd better
find a way to describe the contents of the buffer returned by
DRI3BufferFromPixmap.

However, it would also be 'nice' if the underlying raw data could be
accessed over the wire (ala PutImage/GetImage). Perhaps a different
extension which talks about new formats (including deep color?) and
provides for Get/Put semantics?

-- 
-keith
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