[Mesa-dev] [PATCH 2/5] i965/fs: Emit better b2f of an expression on GEN4 and GEN5

[Eero Tamminen]

Hi,

On 03/16/2015 06:37 PM, Matt Turner wrote:
> On Mon, Mar 16, 2015 at 4:54 AM, Tapani Pälli <tapani.palli at intel.com> wrote:
>> Is there some particular Piglit test case that hits this path and is it
>> possible with gen>5 (by removing gen check)? I've tried this with
>> handicrafted shader_test and also shader-db and cannot hit the conditions
>> for changes to happen. Would be nice to be able to run examine changes and
>> understand this better.
>
> Well, from the shader-db stats there must be some shaders affected in shader-db.
>
> Use INTEL_DEVID_OVERRIDE=... with a Gen4 or Gen5 PCI ID from
> include/pci_ids/i965_pci_ids.h.

And disable drawing to avoid issues from mismatched GPU output?

(With shader cache, I guess these could be used to implement "offline 
compiler" for a build machine running on different GEN from target 
machine. :-))


	- Eero