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Fix cursor image tracking on 64-bit systems

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Like all X API, XFixesGetCursorImage returns arrays of 32-bit
quantities as arrays of long; on 64-bit systems we need to
convert to an array of 32-bit words before creating a texture
from the result.

https://bugzilla.gnome.org/show_bug.cgi?id=633591
This commit is contained in:
Owen W. Taylor 2010-10-30 17:28:36 -04:00
parent 576376a21b
commit 909ec7a709
1 changed files with 34 additions and 1 deletions
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35
src/shell-xfixes-cursor.c
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@ -195,11 +195,40 @@ xfixes_cursor_reset_image (ShellXFixesCursor *xfixes_cursor)
{
XFixesCursorImage *cursor_image;
CoglHandle sprite = COGL_INVALID_HANDLE;
guint8 *cursor_data;
gboolean free_cursor_data;
if (!xfixes_cursor->have_xfixes)
return;
cursor_image = XFixesGetCursorImage (clutter_x11_get_default_display ());
/* Like all X APIs, XFixesGetCursorImage() returns arrays of 32-bit
* quantities as arrays of long; we need to convert on 64 bit */
if (sizeof(long) == 4)
{
cursor_data = (guint8 *)cursor_image->pixels;
free_cursor_data = FALSE;
}
else
{
int i, j;
guint32 *cursor_words;
gulong *p;
guint32 *q;
cursor_words = g_new (guint32, cursor_image->width * cursor_image->height);
cursor_data = (guint8 *)cursor_words;
p = cursor_image->pixels;
q = cursor_words;
for (j = 0; j < cursor_image->height; j++)
for (i = 0; i < cursor_image->width; i++)
*(q++) = *(p++);
free_cursor_data = TRUE;
}
sprite = cogl_texture_new_from_data (cursor_image->width,
cursor_image->height,
COGL_TEXTURE_NONE,
@ -210,7 +239,11 @@ xfixes_cursor_reset_image (ShellXFixesCursor *xfixes_cursor)
#endif
COGL_PIXEL_FORMAT_ANY,
cursor_image->width * 4, /* stride */
(const guint8 *) cursor_image->pixels);
cursor_data);
if (free_cursor_data)
g_free (cursor_data);
if (sprite != COGL_INVALID_HANDLE)
{
if (xfixes_cursor->cursor_sprite != NULL)