[Mesa3d-dev] radeon-rewrite branch merging.

[Dave A. <ai...@li...>]

Hi,

So I have a goal to get a radeon driver that works on a bufmgr and that 
then can be used on non-mm/mm, and also where I can make DRI2 and FBOs 
work.

So with that in mind and not wanting to write this 3 times, I've done a 
major refactoring of the radeon/r200/r300 drivers.

I've refactored all the:
buffer management,
buffer swap + copy,
texture and mipmap management,
command submission handling,
state + atom emission
dma buffers,
lock code,

into common files for all 3 drivers, and re-used the same code in nearly 
the same ways across all 3.

So far I've been working on getting the legacy buffer/command code into 
shape so I can merge this in place of the current drivers without 
suffering any major regressions. Then start adding the code necessary for 
DRI2/GEM/FBOs on top of it. I think this code is pretty close to read to 
merge, I'd like people to bash on it, and report any major regressions 
above the current r100/r200/r300 codebases with these drivers.

In order to get the mm/dri2 stuff working, I mainly need to 
1. get libdrm_radeon into a happy place. You don't require libdrm_radeon
for this stuff at all I've made wrappers that I just need to use some 
magic to hook up.
2. add userspace clear paths for r100/r200.
3. fix lockups from DRI2 lockless :)
4. make it go fast.

Most of the code was written by Nicolai and Jerome, I've just spent 2-3 
weeks moving it around the place until it works!!

I've done a series of piglit regressions and I have one or two to fix, but 
it seems to be only a couple left.

Also any suggestions for things I should use to test this? I've mainly 
been doing piglit + gears + ipers + openarena when I can.

Dave.