From bd6e5cd809f4fa605f8505fa06712981b3443537 Mon Sep 17 00:00:00 2001
From: Matthias Kramm <kramm@quiss.org>
Date: Mon, 5 Apr 2010 14:17:58 -0700
Subject: [PATCH] use 64 bit operations to update boolean bitmaps
---
lib/pdf/BitmapOutputDev.cc | 34 ++++++++++++++++++++++++++++------
1 file changed, 28 insertions(+), 6 deletions(-)
diff --git a/lib/pdf/BitmapOutputDev.cc b/lib/pdf/BitmapOutputDev.cc
index e1cb3d3..49f5e3c 100644
--- a/lib/pdf/BitmapOutputDev.cc
+++ b/lib/pdf/BitmapOutputDev.cc
@@ -468,13 +468,35 @@ static void update_bitmap(SplashBitmap*bitmap, SplashBitmap*update, int x1, int
u += width8;
}
} else {
- int x,y;
- for(y=0;y<yspan;y++) {
- for(x=0;x<xspan;x++) {
- b[x] |= u[x];
+ if(((ptroff_t)b&7)==((ptroff_t)u&7)) {
+ int x,y;
+ for(y=0;y<yspan;y++) {
+ Guchar*e1 = b+xspan-8;
+ Guchar*e2 = b+xspan;
+ while(((ptroff_t)b&7) && b<e1) {
+ *b |= *u;
+ b++;u++;
+ }
+ while(b<e1) {
+ *(long long*)b |= *(long long*)u;
+ b+=8;u+=8;
+ }
+ while(b<e2) {
+ *b |= *u;
+ b++;u++;
+ }
+ b += width8-xspan;
+ u += width8-xspan;
+ }
+ } else {
+ int x,y;
+ for(y=0;y<yspan;y++) {
+ for(x=0;x<xspan;x++) {
+ b[x] |= u[x];
+ }
+ b += width8;
+ u += width8;
}
- b += width8;
- u += width8;
}
}
}
--
1.7.10.4