From mboxrd@z Thu Jan  1 00:00:00 1970
From: Olivier Galibert <galibert@pobox.com>
Subject: Register "linking"
Date: Tue, 12 Jun 2012 12:35:37 +0200
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  Hi guys,

I'm playing with my gm45, and trying to understand the inter-shader
register allocation and referencing aspects.  From what I see, the vs
and clipper follow the brw_vue_map to know where data is.  The
fragment shader, though, does its own input register allocation in the
urb_setup array.  How is the link done between the two?  I've been
unable to find it...

Best,

  OG.