On Wed, May 25, 2005 at 07:50:16AM +0200, Werner LEMBERG wrote:
>
> Thanks, applied! Note that I've changed the third and fourth argument
> of FT_Bitmap_Embolden to be normal values, not pointers. Please test.
>
>
> Werner
Hi Werner,
This patch fixes some bugs in FT_Bitmap_Embolden.
ChangeLog:
* src/base/ftbitmap.c (FT_Bitmap_Embolden): fix a bug when pitch is
negative.
fix a bug when pixel_mode is FT_PIXEL_MODE_GRAY and num_gray != 256.
some speed-up when pixel_mode is FT_PIXEL_MODE_GRAY.
(ft_bitmap_assure_buffer): accept FT_PIXEL_MODE_LCD and
FT_PIXEL_MODE_LCD_V.
--
Regards,
olv
=== src/base/ftbitmap.c
==================================================================
--- src/base/ftbitmap.c (revision 909)
+++ src/base/ftbitmap.c (local)
@@ -115,6 +115,8 @@
switch ( bitmap->pixel_mode )
{
case FT_PIXEL_MODE_MONO:
+ case FT_PIXEL_MODE_LCD:
+ case FT_PIXEL_MODE_LCD_V:
ppb = 8;
break;
case FT_PIXEL_MODE_GRAY2:
@@ -210,7 +212,7 @@
else
{
pitch = -pitch;
- p = bitmap->buffer + pitch * ( bitmap->rows - ystr - 1 );
+ p = bitmap->buffer + pitch * ( bitmap->rows - 1 );
}
/* for each row */
@@ -237,16 +239,30 @@
/* the maximum value of 8 for `xstr' comes from here */
if ( x > 0 )
p[x] |= p[x - 1] << ( 8 - i );
+
+#if 0
+ if ( p[x] == 0xff )
+ break;
+#endif
}
else if ( bitmap->pixel_mode == FT_PIXEL_MODE_GRAY )
{
if ( x - i >= 0 )
{
- if ( p[x] + p[x - i] > 0xff )
- p[x] = 0xff;
+ if ( p[x] + p[x - i] > bitmap->num_grays )
+ {
+ p[x] = bitmap->num_grays;
+ break;
+ }
else
+ {
p[x] += p[x - i];
+ if ( p[x] == bitmap->num_grays )
+ break;
+ }
}
+ else
+ break;
}
}
}
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