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Set unused bits in pixel to 1s in case they are used as alpha; copying

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Mon Aug 23 01:17:59 2004  Matthias Clasen  <maclas@gmx.de>

	* gdk/gdkrgb.c (gdk_rgb_xpixel_from_rgb_internal): Set unused
	bits in pixel to 1s in case they are used as alpha; copying
	code from gdk_colormap_alloc_colors().  (#150466, Rich Wareham)
This commit is contained in:
Matthias Clasen 2004-08-23 05:19:52 +00:00 committed by Matthias Clasen
parent 515c055ccd
commit ec066eeef8
5 changed files with 34 additions and 1 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
Mon Aug 23 01:17:59 2004 Matthias Clasen <maclas@gmx.de>
* gdk/gdkrgb.c (gdk_rgb_xpixel_from_rgb_internal): Set unused
bits in pixel to 1s in case they are used as alpha; copying
code from gdk_colormap_alloc_colors(). (#150466, Rich Wareham)
2004-08-22 Philip Langdale <plangdale@vmware.com>
* gtk/gtkaction.c (gtk_action_disconnect_proxy): Two signals

6
ChangeLog.pre-2-10
View File

@ -1,3 +1,9 @@
Mon Aug 23 01:17:59 2004 Matthias Clasen <maclas@gmx.de>
* gdk/gdkrgb.c (gdk_rgb_xpixel_from_rgb_internal): Set unused
bits in pixel to 1s in case they are used as alpha; copying
code from gdk_colormap_alloc_colors(). (#150466, Rich Wareham)
2004-08-22 Philip Langdale <plangdale@vmware.com>
* gtk/gtkaction.c (gtk_action_disconnect_proxy): Two signals

6
ChangeLog.pre-2-6
View File

@ -1,3 +1,9 @@
Mon Aug 23 01:17:59 2004 Matthias Clasen <maclas@gmx.de>
* gdk/gdkrgb.c (gdk_rgb_xpixel_from_rgb_internal): Set unused
bits in pixel to 1s in case they are used as alpha; copying
code from gdk_colormap_alloc_colors(). (#150466, Rich Wareham)
2004-08-22 Philip Langdale <plangdale@vmware.com>
* gtk/gtkaction.c (gtk_action_disconnect_proxy): Two signals

6
ChangeLog.pre-2-8
View File

@ -1,3 +1,9 @@
Mon Aug 23 01:17:59 2004 Matthias Clasen <maclas@gmx.de>
* gdk/gdkrgb.c (gdk_rgb_xpixel_from_rgb_internal): Set unused
bits in pixel to 1s in case they are used as alpha; copying
code from gdk_colormap_alloc_colors(). (#150466, Rich Wareham)
2004-08-22 Philip Langdale <plangdale@vmware.com>
* gtk/gtkaction.c (gtk_action_disconnect_proxy): Two signals

11
gdk/gdkrgb.c
View File

@ -745,6 +745,8 @@ gdk_rgb_xpixel_from_rgb_internal (GdkColormap *colormap,
else if (image_info->visual->type == GDK_VISUAL_TRUE_COLOR ||
image_info->visual->type == GDK_VISUAL_DIRECT_COLOR)
{
guint32 unused;
#ifdef VERBOSE
g_print ("shift, prec: r %d %d g %d %d b %d %d\n",
image_info->visual->red_shift,
@ -754,8 +756,15 @@ gdk_rgb_xpixel_from_rgb_internal (GdkColormap *colormap,
image_info->visual->blue_shift,
image_info->visual->blue_prec);
#endif
/* If bits not used for color are used for something other than padding,
* it's likely alpha, so we set them to 1s.
*/
unused = ~ (image_info->visual->red_mask |
image_info->visual->green_mask |
image_info->visual->blue_mask |
(((~(guint32)0)) << image_info->visual->depth));
pixel = (((r >> (16 - image_info->visual->red_prec)) << image_info->visual->red_shift) +
pixel = (unused + ((r >> (16 - image_info->visual->red_prec)) << image_info->visual->red_shift) +
((g >> (16 - image_info->visual->green_prec)) << image_info->visual->green_shift) +
((b >> (16 - image_info->visual->blue_prec)) << image_info->visual->blue_shift));
}