From 41e646e019911f8e566e4f9963036117750f862f Mon Sep 17 00:00:00 2001
From: Henry Song <henry.song@samsung.com>
Date: Tue, 29 Jan 2013 17:30:25 +0000
Subject: gl: disable GL_DITHER

GL_DITHER is enabled by default by spec. Leaving GL_DITHER enabled
causes color pixel mismatch on some drivers by comparing uploading then
readPixels and original image.
---
 src/cairo-gl-device.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/cairo-gl-device.c b/src/cairo-gl-device.c
index 22297b33..b30c49cb 100644
--- a/src/cairo-gl-device.c
+++ b/src/cairo-gl-device.c
@@ -725,6 +725,8 @@ _cairo_gl_context_set_destination (cairo_gl_context_t *ctx,
 #endif
     }
 
+    glDisable (GL_DITHER);
+
     glViewport (0, 0, surface->width, surface->height);
 
     if (_cairo_gl_surface_is_texture (surface))
-- 
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