[Bug 91970] [BSW regression] dEQP-GLES3.functional.shaders.precision.int.highp_mul_vertex

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91970

--- Comment #7 from Kristian Høgsberg <krh at bitplanet.net> ---
(In reply to Matt Turner from comment #4)
> Created attachment 118317 [details] [review]
> patch
> 
> The relevant instructions generated are
> 
> mul(8)          g124<1>D        g6<8,8,1>D      g10<8,8,1>UW    { align1 1Q
> };
> mul(8)          g7<1>D          g6<8,8,1>D      g10<8,8,1>UW    { align1 1Q

We're missing a .1 subreg offset on one of these.

> };
> ...
> add(8)          g124.1<2>UW     g124.1<16,8,2>UW g7<16,8,2>UW   { align1 1Q
> };
> 
> I could imagine that the D * UW multiplies don't work as expected (maybe we
> should do D * W for signed multiplication?). Attached is a patch that gives
> that a try.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-3d-bugs/attachments/20150923/264055cc/attachment.html>