From 762b09cdb5b5ee24a38ae7e60cf2c7ff2863041f Mon Sep 17 00:00:00 2001
From: Alexander <homm86@gmail.com>
Date: Fri, 18 Aug 2017 01:13:50 +0300
Subject: [PATCH] unroll ImagingPackRGB

---
 libImaging/Pack.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/libImaging/Pack.c b/libImaging/Pack.c
index 621936351..b624f1956 100644
--- a/libImaging/Pack.c
+++ b/libImaging/Pack.c
@@ -227,13 +227,17 @@ packLAL(UINT8* out, const UINT8* in, int pixels)
 void
 ImagingPackRGB(UINT8* out, const UINT8* in, int pixels)
 {
-    int i;
+    int i = 0;
     /* RGB triplets */
-    for (i = 0; i < pixels; i++) {
-        out[0] = in[R];
-        out[1] = in[G];
-        out[2] = in[B];
-        out += 3; in += 4;
+    for (; i < pixels-1; i++) {
+        ((UINT32*)out)[0] = ((UINT32*)in)[i];
+        out += 3;
+    }
+    for (; i < pixels; i++) {
+        out[0] = in[i*4+R];
+        out[1] = in[i*4+G];
+        out[2] = in[i*4+B];
+        out += 3;
     }
 }