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a comment asked to optimize this function, so that's what I did.

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2001-08-07  Sven Neumann  <sven@gimp.org>

	* gdk-pixbuf.c (gdk_pixbuf_fill): a comment asked to optimize this
	function, so that's what I did.
This commit is contained in:
Sven Neumann 2001-08-07 17:49:09 +00:00 committed by Sven Neumann
parent 967c0f7c7b
commit 85a58dddba
2 changed files with 29 additions and 11 deletions
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5
gdk-pixbuf/ChangeLog
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@ -1,3 +1,8 @@
2001-08-07 Sven Neumann <sven@gimp.org>
* gdk-pixbuf.c (gdk_pixbuf_fill): a comment asked to optimize this
function, so that's what I did.
2001-08-06 Kjartan Maraas <kmaraas@gnome.org>
* gdk-pixdata.c: Fix a typo.

35
gdk-pixbuf/gdk-pixbuf.c
View File

@ -429,6 +429,9 @@ gdk_pixbuf_fill (GdkPixbuf *pixbuf,
g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
if (pixbuf->width == 0 || pixbuf->height == 0)
return;
pixels = pixbuf->pixels;
r = (pixel & 0xff000000) >> 24;
@ -448,20 +451,30 @@ gdk_pixbuf_fill (GdkPixbuf *pixbuf,
pixbuf->rowstride * pixbuf->height);
} else {
guchar *p;
guchar *end;
guchar c[4];
gint n;
/* feel free to optimize this */
c[0] = r; c[1] = g; c[2] = b; c[3] = a;
p = pixels;
end = pixels + pixbuf->rowstride * pixbuf->height;
end -= (pixbuf->rowstride - pixbuf->width * pixbuf->n_channels);
while (p < end) {
*p++ = r;
*p++ = g;
*p++ = b;
if (pixbuf->has_alpha)
*p++ = a;
n = pixbuf->width;
if (pixbuf->has_alpha) {
do {
memcpy (p, c, 4);
p += 4;
} while (--n);
} else {
do {
memcpy (p, c, 3);
p += 3;
} while (--n);
}
p = pixels;
n = pixbuf->height - 1;
while (n--) {
p += pixbuf->rowstride;
memcpy (p, pixels, pixbuf->width * pixbuf->n_channels);
}
}
}