From db7f0879531ba397b2091640f7f39d4468544f9a Mon Sep 17 00:00:00 2001
From: Robert Bragg <robert@linux.intel.com>
Date: Fri, 15 Jul 2011 12:31:21 +0100
Subject: [PATCH] hello: Make sure to clear background explicitly

This test wasn't actually explicitly clearing the background to black
it was simply a fluke that some drivers clear the background when
allocating a new framebuffer.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
---
 examples/hello.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/examples/hello.c b/examples/hello.c
index 079dc4ecf..775cc1aad 100644
--- a/examples/hello.c
+++ b/examples/hello.c
@@ -2,6 +2,8 @@
 #include <glib.h>
 #include <stdio.h>
 
+CoglColor black;
+
 int
 main (int argc, char **argv)
 {
@@ -38,6 +40,7 @@ main (int argc, char **argv)
     triangle = cogl_primitive_new_p2c4 (COGL_VERTICES_MODE_TRIANGLES,
                                         3, triangle_vertices);
     for (;;) {
+        cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
         cogl_primitive_draw (triangle);
         cogl_framebuffer_swap_buffers (fb);
     }