[clutter] test-cogl-sub-texture: Allow single-bit rendering error

[Emmanuele Bassi <ebassi src gnome org>]

commit 5aa8ed93cef370be0ef2d840c3356a847fb95dbe
Author: Adam Jackson <ajax redhat com>
Date:   Mon May 2 12:15:28 2011 -0400

    test-cogl-sub-texture: Allow single-bit rendering error
    
    Signed-off-by: Adam Jackson <ajax redhat com>
    
    http://bugzilla.clutter-project.org/show_bug.cgi?id=2640

 tests/conform/test-cogl-sub-texture.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/tests/conform/test-cogl-sub-texture.c b/tests/conform/test-cogl-sub-texture.c
index b876a68..6cbafbf 100644
--- a/tests/conform/test-cogl-sub-texture.c
+++ b/tests/conform/test-cogl-sub-texture.c
@@ -2,6 +2,7 @@
 #include <clutter/clutter.h>
 #include <cogl/cogl.h>
 #include <string.h>
+#include <stdlib.h>
 
 #include "test-conform-common.h"
 
@@ -226,8 +227,8 @@ validate_result (TestState *state)
   for (y = 0; y < 10; y++)
     for (x = 0; x < 10; x++)
       {
-        g_assert (*(p++) == x + 40);
-        g_assert (*(p++) == y + 20);
+        g_assert_cmpint (abs(*(p++) - (x + 40)), <=, 1);
+        g_assert_cmpint (abs(*(p++) - (y + 20)), <=, 1);
         p += 2;
       }
   g_free (texture_data);