From bffa2b64dee70c29d0b16dcfe9ecde7c46f4f393 Mon Sep 17 00:00:00 2001
From: Michael Drake <tlsa@netsurf-browser.org>
Date: Thu, 8 Jul 2010 20:38:48 +0000
Subject: Treat tiled images scaled to 1x1 as flat fills of the tiled area.

svn path=/trunk/netsurf/; revision=10616
---
 framebuffer/framebuffer.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'framebuffer')

diff --git a/framebuffer/framebuffer.c b/framebuffer/framebuffer.c
index e97d63ab4..bed356863 100644
--- a/framebuffer/framebuffer.c
+++ b/framebuffer/framebuffer.c
@@ -215,6 +215,18 @@ framebuffer_plot_bitmap(int x, int y,
 		}
 	}
 
+	/* Optimise tiled plots of bitmaps scaled to 1x1 by replacing with
+	 * a flat fill of the area.  Can only be done when image is fully
+	 * opaque. */
+	if ((width == 1) && (height == 1)) {
+		if (bitmap->opaque) {
+			/** TODO: Currently using top left pixel. Maybe centre
+			 *        pixel or average value would be better. */
+			return nsfb_plot_rectangle_fill(nsfb, &clipbox,
+					*(nsfb_colour_t *)bitmap->pixdata);
+		}
+	}
+
 	/* get left most tile position */
 	if (repeat_x)
 		for (; x > clipbox.x0; x -= width);
-- 
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