looks like the post size limit ate my first attempt to post this.
Anyway, I was finally able to access DRI cvs (from dri.freedesktop.org), so I pulled the latest tree and created a radeon mergedfb patch against it. I've done some testing and it seems to work fine. The patch only touches the 2D driver. I talked to Kevin E. Marin about merging it and he suggested I get it into the DRI tree. I think this patch adds a useful feature and I'd like to see it get merged. Thoughts?
I'd like to see something like this merged, definitely. Your code looks fine on a first pass, my only question is whether this is something that can be done largely or partly in shared device-independent code, and just have drivers hook that code in.
It seems like a lot of cards have this type of capability and lots of drivers are doing this somewhat independently of one another. Is there some common code that can be abstracted out? (Looking quickly over the code indicates that a big percentage of it looks pretty hw-independent).
And the other question is why didn't Kevin want it in the XFree86 tree? Is there going to be a problem merging this code at some point in the future, or did he just think DRI was a natural home for it? Just curious really...
Keith
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