# HG changeset patch
# User John Tsiombikas <nuclear@member.fsf.org>
# Date 1397108553 -10800
# Node ID fe94d9e986ae2d9423a4c3ee504f00a35c7b5b2e
# Parent  235c8b764c0b1e314ba8fda82e6086394104ee3f
optimized 16bpp swap_buffers

diff -r 235c8b764c0b -r fe94d9e986ae src/main.cc
--- a/src/main.cc	Thu Apr 10 08:03:52 2014 +0300
+++ b/src/main.cc	Thu Apr 10 08:42:33 2014 +0300
@@ -199,9 +199,9 @@
 	 (((g) << gshift) & gmask) | \
 	 (((b) << bshift) & bmask))
 
-#define UNPACK_RED(c)	((c) & 0xff)
+#define UNPACK_RED(c)	(((c) >> 16) & 0xff)
 #define UNPACK_GREEN(c)	(((c) >> 8) & 0xff)
-#define UNPACK_BLUE(c)	(((c) >> 16) & 0xff)
+#define UNPACK_BLUE(c)	((c) & 0xff)
 
 static void swap_buffers()
 {
@@ -227,7 +227,6 @@
 		break;
 
 	case 16:
-	case 15:
 		{
 			uint16_t *dest = (uint16_t*)fb;
 			for(int i=0; i<num_pixels; i++) {
@@ -236,7 +235,9 @@
 				unsigned char g = UNPACK_GREEN(c);
 				unsigned char b = UNPACK_BLUE(c);
 
-				*dest++ = PACK_RGB(r, g, b);
+				*dest++ = (((r) << 8) & 0xf800) |
+					(((g) << 3) & 0x7e0) |
+					(((b) >> 3) & 0x1f);
 			}
 		}
 		break;