Added texture compression test.

examples/08-update/fs_update_cmp.sc

@@ -0,0 +1,15 @@
+$input v_texcoord0
+
+/*
+ * Copyright 2011-2013 Branimir Karadzic. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#include "../common/common.sh"
+
+SAMPLER2D(u_texColor, 0);
+
+void main()
+{
+	gl_FragColor = texture2D(u_texColor, v_texcoord0.xy*0.5+0.5);
+}