[cairo] [patch] gl: use fabs value for color difference

[Chris Wilson]

On Thu, 26 Jul 2012 17:22:20 +0000, "Henry (Yu) Song - SISA" <hsong at sisa.samsung.com> wrote:
> From eaba158af31cbf17d7c0ab079e59f606edcc86d0 Mon Sep 17 00:00:00 2001
> From: Henry Song <henry.song at samsung.com>
> Date: Thu, 26 Jul 2012 10:14:41 -0700
> Subject: [PATCH] gl: use absolute difference value in computing gradient
>  sample width

That's quite embarassing. That's another bug I've fixed elsewhere
without remembering to come back and fix the original.

Thanks,
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre