This is mostly useful for fallback testing.
I suppose if people want finer grained GL ability testing, they can use
Mesa environment variables to tune things.
This adds the new type GdkGLContext that wraps an OpenGL context for a
particular native window. It also adds support for the gdk paint
machinery to use OpenGL to draw everything. As soon as anyone creates
a GL context for a native window we create a "paint context" for that
GdkWindow and switch to using GL for painting it.
This commit contains only an implementation for X11 (using GLX).
The way painting works is that all client gl contexts draw into
offscreen buffers rather than directly to the back buffer, and the
way something gets onto the window is by using gdk_cairo_draw_from_gl()
to draw part of that buffer onto the draw cairo context.
As a fallback (if we're doing redirected drawing or some effect like a
cairo_push_group()) we read back the gl buffer into memory and composite
using cairo. This means that GL rendering works in all cases, including
rendering to a PDF. However, this is not particularly fast.
In the *typical* case, where we're drawing directly to the window in
the regular paint loop we hit the fast path. The fast path uses opengl
to draw the buffer to the window back buffer, either by blitting or
texturing. Then we track the region that was drawn, and when the draw
ends we paint the normal cairo surface to the window (using
texture-from-pixmap in the X11 case, or texture from cairo image
otherwise) in the regions where there is no gl painted.
There are some complexities wrt layering of gl and cairo areas though:
* We track via gdk_window_mark_paint_from_clip() whenever gtk is
painting over a region we previously rendered with opengl
(flushed_region). This area (needs_blend_region) is blended
rather than copied at the end of the frame.
* If we're drawing a gl texture with alpha we first copy the current
cairo_surface inside the target region to the back buffer before
we blend over it.
These two operations allow us full stacking of transparent gl and cairo
regions.
Since GLib ≥ 2.41, attempting to release an unlocked mutex will abort(),
as it happens on most systems already.
Given the lack of proper documentation on how to use GDK with threads,
there is code in the wild that does:
gdk_threads_init ();
gdk_init ();
...
gtk_main ();
instead of the idiomatically correct:
gdk_threads_init ();
gdk_threads_enter ();
gtk_init ();
...
gtk_main ();
...
gdk_threads_leave ();
Which means that gtk_main() will try to release the GDK lock, and thus
trigger an error from GLib.
we cannot really fix all the wrong code everywhere, and since it does
not cost us anything, we can work around the issue inside GDK itself, by
trying to acquire the GDK lock inside gdk_threads_leave() with
trylock().
https://bugzilla.gnome.org/show_bug.cgi?id=735428
It's not necessary anymore because gdk_display_manager_get() always
succeeds and the value is independant of when it was called as it's no
longer backend specific.
Add GInitable interface with a default implementation that always
succeeds. This allows backends to override the GInitable implementation
and add their own checks to determine if the backend can be loaded. If
a backend cannot be loaded, GDK can attempt to load the next available
backend.
Since backends may need to read any relevant options (such as the
display flag) to determine if they can be created successfully, this
patch also removes calls that attempt to create the display manager
before the options have been parsed.
https://bugzilla.gnome.org/show_bug.cgi?id=694465
The story is slightly different for applications vs libraries;
make it clear that libraries should continue using the lock so
we don't break applications that haven't been ported to the
'single thread' model yet.
This commit deprecates gdk_threads_init, gdk_threads_enter,
gdk_threads_leave and gdk_threads_set_lock_functions. Using GTK+
from multiple threads does not work at all on Windows, and is
problematic on other platforms as well. We want to move to a world
where all GTK+ calls are made from the main thread.
Use g_main_context_invoke, g_idle_add and related functions if you
need to schedule GTK+ calls from other threads.
http://bugzilla.gnome.org/show_bug.cgi?id=680754
GDK_NATIVE_WINDOWS was a way to keep some old apps running that did weird
things in gtk2. We should not have to carry this forwards in gtk 3.x.
We do however keep a g_warning() call reminding people of this fact to
ease debugging when they try to port their applications.
https://bugzilla.gnome.org/show_bug.cgi?id=644119
This change does not introduce any functionality change, mostly
cosmtic cleanups, like re-linebreak when introduced annotations messed
up indentation or whitespace errors fixes.
Remove the --sync option and remove the possibility of backend-specific
commandline options altogether. --sync is being replaced by
a GDK_SYNCHRONIZE environment variable.
These functions were trivial g_spawn wrappers in all backends
except for X11, and they can be easily replaced by
g_app_info_create_for_commandline + GdkAppLaunchContext.
Commandline arguments should go away altogether, but this one
goes first, since we then don't need to worry about
_gdk_windowing_substitute_screen_number anymore.
This commit hides the GdkDisplayManager instance and class structs,
adds vfuncs for listing displays, opening displays, and getting and
setting the default display. The X11 backend has a derived
GdkDisplayManagerX11.
The gdk_display_manager_get() function is responsible for deciding on
which of the compiled in backends to use. Currently, it consults the
GDK_BACKEND environment variable and falls back to x11.
gdk_enable_multidevice() has been replaced with gdk_disable_multidevice(),
so applications may call that function if they want to go back at the
previous behavior.
There would be usually little reasons to call that function, unless the
application is doing X calls itself that count on old fashioned core
devices.
gdk_threads_mutex, gdk_threads_lock and gdk_threads_unlock are removed
from public API. gdk_threads_mutex was deprecated already. Instead of
using gdk_threads_lock and _unlock one was presumably supposed to use
the GDK_THREADS_ENTER and _LEAVE macros, which now simply call the
corresponding gdk_threads_enter() and _leave() functions.
Remove he dllimport/dllexport ugliness for GDK for Windows.
There is still a gdk_display variable being exported by the X11
backend.
This commit was created using a script that searched for all docstrings
containing a parameter and the string 'or %NULL'.
Gdk backends and demos excluded as they are not part of a public API
https://bugzilla.gnome.org/show_bug.cgi?id=610474
The Gdk-custom.c file in gir-repository contained a number of
introspection annotations. Merge those into the GDK source files.
Some documentation was moved from the tmpl/ files to accomodate
the addition of annotations.
https://bugzilla.gnome.org/show_bug.cgi?id=592279
Generally you only need to work around bugs in one specific app, so we
don't want to affect the applications that application will start.
Thus we unset GDK_NATIVE_WINDOWS after reading it.
Some applications make weird assumtions on Gtk+ that do not work anymore
with the new client-side windows support. For instance SWT/Eclipse reorders
the stacking order of the X windows directly without telling gdk this,
which breaks gdk drawing as gdk now relies on knowing the stacking order
for window clipping.
This introduces a GDK_NATIVE_WINDOWS environment variable, which if set
causes Gtk+ to always use native windows. Its more compatible with
pre-csw Gtk+ behaviour if you do weird X-specific hacks, although it does
limit the size of GdkWindows to 65535x65535.
2009-01-12 Tor Lillqvist <tml@iki.fi>
* gdk/gdk.c (gdk_arg_debug_cb) (gdk_arg_no_debug_cb): A
GOptionArgFunc should return gboolean and take also a GError
pointer parameter, so make these two functions do that. Return
FALSE (and set the GError) if the parsing of the debug string
failed completely. Note that g_parse_debug_string() doesn't really
have any way to return parsing status, and accepts partially
incorrect strings, though.
svn path=/trunk/; revision=22095
2008-11-12 Richard Hult <richard@imendio.com>
Bug 550942 – [patch] Rework of gdkeventloop-quartz.c
* gdk/gdk.c:
* gdk/gdkinternals.h: Add eventloop debug facility.
* gdk/quartz/gdkeventloop-quartz.c: Big rework of the quartz
mainloop integration, patch from Owen Taylor. See bug #550942 for
the details.
svn path=/trunk/; revision=21783
2008-08-04 Michael Natterer <mitch@imendio.com>
* gdk/gdk.c (gdk_parse_args): call gdk_rgb_set_verbose(TRUE) if
"gdkrgb" is in the debug flags.
* gdk/gdkrgb.c (gdk_rgb_init): remove setting the verbose flag
here, this function is deprecated and the debug flag didn't work
when using GDK properly.
svn path=/trunk/; revision=20981
2008-06-30 Cody Russell <bratsche@gnome.org>
* Practically everything changed.
Change all references of GIMP Toolkit (and variations of it)
to GTK+ Toolkit, showing no mercy at all to our beloved
ancestry. (#540529)
svn path=/trunk/; revision=20709
2006-12-22 Matthias Clasen <mclasen@redhat.com>
* gdk/gdk.symbols:
* gdk/gdk.h:
* gdk/gdk.c: Add functions to allow threadsafe handling
of idles and timeouts wrt. to the GDK lock. (#321886,
Chris Wilson)
2005-11-09 Tor Lillqvist <tml@novell.com>
* gdk/gdkinternals.h
* gdk/gdk.c (gdk_debug_keys[]): Add new GDK_DEBUG_DRAW flag to
the GdkDebugFlag enum.
* gdk/win32/gdkdrawable-win32.c: Use DRAW to trigger GDK_NOTEs in
this file instead of MISC. Now asking for MISC will give mainly
window manipulation debugging output.
2005-03-15 Matthias Clasen <mclasen@redhat.com>
Make PLT-reduction work with gcc4, and don't include
everything in gdkalias.h:
* gdk/gdk.symbols: Group symbols by header and source file.
* gdk/makegdkalias.pl: Protect definitions by the same
preprocessor symbols used to guard the headers. Move
the alias declarations to a separate file which is
produced when calling makegdkalias.pl -def
* gdk/Makefile.am (gdkaliasdef.c): Add a rule to generate this
file.
* gdk/*.c, gdk/x11/*.c: Include gdkalias.h after the other
headers, include gdkaliasdef.c at the bottom.
Sun Sep 5 17:14:16 2004 Matthias Clasen <maclas@gmx.de>
* gtk/gtkmain.c:
* gdk/gdk.c:
* gdk/x11/gdkmain-x11.c:
* gdk/win32/gdkmain-win32.c: Add descriptions for the
commandline arguments. The actual descriptions are mostly
taken from libbonoboui, so translators should be able to
copy existing translations from there.
Mon Aug 9 15:41:17 2004 Matthias Clasen <maclas@gmx.de>
Add hidden aliases for exported symbols which are
used internally in order to get rid of many PLT
entries. (#145519, Arjan van de Ven)
* gdk/Makefile.am: Add rules to generate gdk.def and
gdkalias.h from gdk.symbols, and make make check check
the abi with abicheck.sh.
* gdk/gdk.symbols: New file. Definition of the GDK ABI.
The file can be processed by cpp to filter out certain
subsets of symbols.
* gdk/abicheck.sh: New file. Script to check the actually
symbols exported from libgdk-x11.2.0.so against the symbols
found in gdk.symbols.
* gdk/makegdkalias.pl: New file. Perl script to generate the
header containing the alias definitions for internally used
exported symbols from a list of symbols.
* gdk/*.c, gdk/x11/*.c: Include gdkalias.h
2004-03-05 Federico Mena Quintero <federico@ximian.com>
Fixes#136082 and #135265, patch by Morten Welinder.
* configure.in: Use AC_SYS_LARGEFILE.
* */*.c: #include <config.h>
