[Intel-gfx] [RFC] xf86-video-intel: enable hw-generated binding tables

[Daniel Vetter]

On Thu, Apr 24, 2014 at 11:25:15AM +0300, Abdiel Janulgue wrote:
> On Thursday, April 24, 2014 07:06:34 AM Chris Wilson wrote:
> > On Thu, Apr 24, 2014 at 09:08:14AM +0300, Abdiel Janulgue wrote:
> > > Anyway I haven't tried the work-around where we explictly only disable the
> > > BT and RS on the other user-space clients (xorg driver in this case) when
> > > Mesa is using RS instead of forcing the reset of the clients to use RS
> > > format.  I'll try that first and let you know if it works. 
> 
> I hate to break the bad news. Tried this just now - still get hangs :(
> 
> So I guess, all userspace clients* does need to use RS-format if we use this 
> feature. GPGPU workloads seems to be special use-case where the RS hwbinding 
> table format can be disabled. Otherwise, I guess we are stuck with this 
> inflexibility.
> 
> [1]
> On the other hand, it doesn't seem all that bad though. The RS hw-binding 
> table format are only needed for clients that submit vertex and pixel shader 
> commands. I've identified currently just UXA and SNA that seem to use this 
> besides Mesa. OpenCL is not affected.

libva? rendercopy in igt? This kind of abi break is really ugly :(
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch