[Intel-gfx] [PATCH] sna: Use VMask in 3DSTATE_PS

[Timo Aaltonen]

On 06.11.2014 01:48, Rodrigo Vivi wrote:
> Using dispatch mask cause hangs waiting PS Done on some cases like bug #83207,
> with larger screen or when scaling it.
> 
> Also mesa uses VMask instead of Dmask for 3DSTATE_PS because in some cases
> they were getting incorrect derivatives for subspans.
> 
> Reference: https://bugs.freedesktop.org/show_bug.cgi?id=83207
> Cc: Timo Aaltonen <tjaalton at ubuntu.com>
> Cc: Gary Wang <gary.c.wang at intel.com>
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

works great, thanks!

Tested-by: Timo Aaltonen <timo.aaltonen at canonical.com>