[cogl] test-sub-texture: Request texture data in premult format

[Neil Roberts <nroberts src gnome org>]

commit 5928cade0b0615bd8a4766fdf0976a3b2ff8a9cb
Author: Neil Roberts <neil linux intel com>
Date:   Thu Feb 23 18:07:55 2012 +0000

    test-sub-texture: Request texture data in premult format
    
    When requesting the texture data to test that we get back what we
    uploaded, we need to ask for it in a premult format otherwise it will
    get converted and the test will fail. This was working for the GL
    driver because of a bug where it would fail to do the conversion.
    
    Reviewed-by: Robert Bragg <robert linux intel com>

 tests/conform/test-sub-texture.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/conform/test-sub-texture.c b/tests/conform/test-sub-texture.c
index f25190f..944f2ae 100644
--- a/tests/conform/test-sub-texture.c
+++ b/tests/conform/test-sub-texture.c
@@ -271,7 +271,7 @@ validate_result (TestState *state)
   /* Get the texture data */
   p = texture_data = g_malloc (256 * 256 * 4);
   cogl_texture_get_data (COGL_TEXTURE (test_tex),
-                         COGL_PIXEL_FORMAT_RGBA_8888,
+                         COGL_PIXEL_FORMAT_RGBA_8888_PRE,
                          256 * 4, texture_data);
 
   /* Verify the texture data */