[vte] Add FIXME about potential optimisation

[Christian Persch <chpe src gnome org>]

commit e70fbd240fd230155a5321907bfe6f4fa032586c
Author: Christian Persch <chpe gnome org>
Date:   Sat Apr 10 16:27:19 2010 +0200

    Add FIXME about potential optimisation

 src/vtebg.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/src/vtebg.c b/src/vtebg.c
index e5bd7f9..1f8a4f0 100644
--- a/src/vtebg.c
+++ b/src/vtebg.c
@@ -438,6 +438,14 @@ vte_bg_get_surface(VteBg *bg,
 		return cached;
 	}
 
+        /* FIXME: The above only returned a hit when the source *and*
+         * tint and saturation matched. This means that for VTE_BG_SOURCE_FILE,
+         * we will create below *another* #GdkPixbuf for the same source file,
+         * wasting memory. We should instead look up the source pixbuf regardless
+         * of tint and saturation, and just create a new #VteBgCacheItem
+         * with a new surface for it.
+         */
+
 	item = g_slice_new(VteBgCacheItem);
 	item->source_type = source_type;
 	item->source_pixbuf = NULL;