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Fill in unused bits so they can be used for the depth-32 target case.

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2005-05-09  Owen Taylor  <otaylor@redhat.com>

        * gdk/gdkrgb.c (gdk_rgb_convert_0888_br, gdk_rgb_convert_8880_br):
        Fill in unused bits so they can be used for the depth-32 target case.
        Rewrite so that that gives a marginal speedup rather than a
        marginal slowdown. (on x86)

        * gdk/gdkscreen.h gdk/x11/gdkscreen-x11.[ch] gdk/x11/gdkvisual-x11.c:
        Add gdk_screen_get_rgba_colormap/visual to get a visual for
        windows with an alpha channel, if one exists.

        * gdk/win32/gdkscreen-win32.c gdk/linux-fb/gdkscreen-fb.c:
        Stub out gdk_screen_get_rgba_colormap/visual.

        * gdk/x11/gdkcolor-x11.c (gdk_colormap_alloc_colors): computation of
        "unused" wasn't right for depth == 32, since it depended on
        shifting by 32.

        * gdk/gdkrgb.c: Fill in alpha bits with 1s. (Based on patch from
        Keith Packard,
        http://mail.gnome.org/archives/gtk-devel-list/2004-June/msg00080.html)

        * gdk/x11/gdkdrawable-x11.c (gdk_x11_drawable_get_picture):
        Implement again, without using Xft.

        * tests/testgtk.c: Add a test for windows with an alpha channel.
This commit is contained in:
Owen Taylor
2005-05-09 22:54:10 +00:00
committed by Owen Taylor
parent e899aa852a
commit 485fd85179
15 changed files with 559 additions and 33 deletions
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24
gdk/x11/gdkdrawable-x11.c
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@ -337,7 +337,29 @@ _gdk_x11_have_render (GdkDisplay *display)
static Picture
gdk_x11_drawable_get_picture (GdkDrawable *drawable)
{
return None;
GdkDrawableImplX11 *impl = GDK_DRAWABLE_IMPL_X11 (drawable);
if (!impl->picture)
{
Display *xdisplay = GDK_SCREEN_XDISPLAY (impl->screen);
XRenderPictFormat *format;
GdkVisual *visual = gdk_drawable_get_visual (GDK_DRAWABLE_IMPL_X11 (drawable)->wrapper);
if (!visual)
return None;
format = XRenderFindVisualFormat (xdisplay, GDK_VISUAL_XVISUAL (visual));
if (format)
{
XRenderPictureAttributes attributes;
attributes.graphics_exposures = False;
impl->picture = XRenderCreatePicture (xdisplay, impl->xid, format,
CPGraphicsExposure, &attributes);
}
}
return impl->picture;
}
static void