If --stereo is passed, then the texture pixmap is created as a stereo
texture pixmap, and also, if passed in conjunction with --gears,
glxgears is also run with the -stereo option.

If --gears is passed on the command line, glxgears is run, and
is used for the source window rather than drawing solid rectangles
into a window we create outselves.

Add cogl_texture_pixmap_x11_new_left() and
cogl_texture_pixmap_x11_new_right() (which takes the left texture
as an argument) for texture pixmap rendering with stereo content.
The underlying GLXPixmap is created using a stereo visual and shared
between the left and right textures.

Add a new example that draws a triangle floating in the air in
front of the screen.

If we want to show quad-buffer stereo with Cogl, we need to pick an
appropriate fbconfig for creating the CoglOnscreen objects. Add
cogl_onscreen_template_set_stereo_enabled() to indicate whether
stereo support is needed.

Add cogl_framebuffer_get_stereo_mode() to see if a framebuffer was
created with stereo support.

Add cogl_framebuffer_get_stereo_mode() to pick whether to draw to
the left, right, or both buffers.

Fix a couple of minor compilation problems from a bad rebase - a
missing label and a missing variable.

Clean up cleanly when closed rather than dying with an X Error -
we do this by advertising support for the WM_DELETE_WINDOW protocol
and handling the client message.

Reviewed-by: Robert Bragg <robert.bragg@intel.com>

Wait for the main window (and hence the window we create within
the main window to redirect) to be mapped and become viewable
before we try to call XCompositeNameWindowPixmap() -
XComposeNameWindowPixmap() produces a BadMatch error on a
non-viewable window.

Reviewed-by: Robert Bragg <robert.bragg@intel.com>

An application might for whatever reason want to control a specific output
directly and have cogl only swap the other outputs if any. So add an api that
allows setting a crtc to be ignored.

https://bugzilla.gnome.org/show_bug.cgi?id=730536

Applications might want to get the underlying gbm device so add a getter for it.

https://bugzilla.gnome.org/show_bug.cgi?id=730536

The surfaceless context extension can be used to bind a context
without a surface. We can use this to avoid creating a dummy surface
when the CoglContext is first created. Otherwise we have to have the
dummy surface so that we can bind it before the first onscreen is
created.

The main awkward part of this patch is that theoretically according to
the GL and GLES spec if you first bind a context without a surface
then the default state for glDrawBuffers is GL_NONE instead of
GL_BACK. In practice Mesa doesn't seem to do this but we need to be
robust against a GL implementation that does. Therefore we track when
the CoglContext is first used with a CoglOnscreen and force the
glDrawBuffers state to be GL_BACK.

There is a further awkward part in that GLES2 doesn't actually have a
glDrawBuffers state but GLES3 does. GLES3 also defaults to GL_NONE in
this case so if GLES3 is available then we have to be sure to set the
state to GL_BACK. As far as I can tell that actually makes GLES3
incompatible with GLES2 because in theory if the application is not
aware of GLES3 then it should be able to assume the draw buffer is
always GL_BACK.

Reviewed-by: Robert Bragg <robert.bragg@intel.com>
(cherry picked from commit e5f28f1e75db9bdc4f2688f420a74f908f96cf76)

Conflicts:
	cogl/winsys/cogl-winsys-egl-kms.c
	cogl/winsys/cogl-winsys-egl-x11.c

Some features that were previously available as an extension in GLES2
are now in core in GLES3 so we should be able to specify that with the
gles_availability mask of COGL_EXT_BEGIN so that GL implementations
advertising GLES3 don't have to additionally advertise the extension
for us to take advantage of it.

Reviewed-by: Robert Bragg <robert.bragg@intel.com>
(cherry picked from commit 4d892cd97558da61ba526f947ac0555ebab632d2)

Currently, due to the way that Visual Studio 2010+ projects are handled,
the "install" project does not re-build upon changes to the sources, as it
does not believe that its dependencies have changed, although the changed
sources are automatically recompiled.  This means that if a part or more
of the solution does not build, or if the sources need some other fixes
or enhancements, the up-to-date build is not copied automatically, which
can be misleading.

Improve on the situation by forcing the "install" project to trigger its
rebuild, so that the updated binaries can be copied.  This does trigger an
MSBuild warning, but having that warning is way better than not having an
up-to-date build, especially during testing and development.

When a new CoglAtlasTexture tries to fit into an existing CoglAtlas
it should make sure the atlas stays valid while it expands.

https://bugzilla.gnome.org/show_bug.cgi?id=728064



Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 2eec9758f67e9073371c2edd63379324849373c4)

This can happen when we dpms off the output or when login1 takes away
drm master status from our drm fd.  In either case, we need to call
the swap notify handler so that the compositor dosn't get stuck waiting
for that notification.  The compositor should stop repainting shortly in
both cases, as it's either going into dpms off mode or vt switching away.

https://bugzilla.gnome.org/show_bug.cgi?id=728979



Reviewed-by: Neil Roberts <neil@linux.intel.com>

This environment variable predates the reliable platform detection in mesa
and typically just causes crashes when the specified platform doesn't
match what's passed in.  Aside from being unecessary and problematic
it also leaks into the GNOME session, preventing clients from
automatically detecting the wayland platform.

https://bugzilla.gnome.org/show_bug.cgi?id=728978



Reviewed-by: Neil Roberts <neil@linux.intel.com>

Prevent Cogl function names from being mangled when a C++ compiler is
being used by adding some missing COGL_{BEGIN,END}_DECLS guards.

https://bugzilla.gnome.org/show_bug.cgi?id=728628



Reviewed-by: Neil Roberts <neil@linux.intel.com>

Commit 1b2dd815

 (Registers gtypes for all public objects and structs)
introduced GCCism's in its use of varargs, which broke the build of Cogl
on other non-GCC compilers, such as Visual Studio.

Define the COGL_GTYPE_DEFINE_BASE_CLASS and COGL_GTYPE_DEFINE_CLASS macros
using ISO-style varargs so that the build of Cogl can be fixed on non-GCC
compilers.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

Cogl, when built with the SDL winsys, includes the SDL headers in its
headers, which causes main() to be defined to SDL's main() wrapper on
Windows, which means that SDL2.lib and SDL2main.lib need to be linked to
every single program that links to Cogl with the SDL winsys.

Avoid this behavior by defining SDL_MAIN_HANDLED in the CFLAGS of the
sample and test programs, and let people know that this is the case.

Remove #pragma directives that causes any applications that use Cogl to
link to the SDL libraries when Cogl was built with the SDL winsys.  This is
mainly due to the availability of both SDL-1.x and SDL-2.x support in the
SDL winsys, where different libraries are linked for SDL-1.x and SDL-2.x.

To avoid having to link to the SDL/SDL2 libraries when the application code
is not directly using SDL/SDL2, define SDL_MAIN_HANDLED in the CFLAGS so
that SDL's wrapper main() implementation will not be used when the
application is being built.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit c3035912833eabe1f6dadbea23c78e595aac79dc)

In Lionel's work for supporting introspection better for Cogl, a number of
public symbols were added for Cogl and Cogl-Path, so add these symbols to
cogl.symbols and cogl-path.symbols so that they can be exported, which will
fix the build of the Cogl conformance test and the introspection files
for the Windows-based builds.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

Define COGL_HAS_GTYPE_SUPPORT during the preprocessing of the .symbols
files so that the _get_gtype symbols can be exported.

Let people know that for Visual Studio builds GLib is a hard requirement,
and let the people also know that SDL-2.x is now used for builds supporting
the SDL winsys.  Also let people know that current situation regarding
building and linking Cogl applications with the SDL winsys built in.

On 64-bit fedora the 32-bit MinGW compiler is called
i686-w64-mingw32-gcc which wasn't being picked up by the
mingw-fetch-depdencies script.

Reviewed-by: Robert Bragg <robert.bragg@intel.com>
(cherry picked from commit f5f0342315e524523c50549e91eb9ff1683ab558)

This macro is internal to gobject so using it risks breaking Cogl if
glib changes its API. Instead we just use its expansion. Note that
glib provides two expansions for this depending on the glib version
but this only uses the one for older versions.

Reviewed-by: Robert Bragg <robert.bragg@intel.com>

cogl_gst_video_sink_get_natural_size was using g_return_val_if_fail
but its return type is void. For some reason GCC doesn't complain
about this but it causes a compile error on clang.

The pkg-config file might not necessarily be installed yet so I don't
think it makes sense to try and include it when running g-ir-scanner.
Presumably it should pick up the headers from source directory instead
of the installed directory. It seems to build without this patch so
let's just revert it.

This reverts commit d9c8570f.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

Reviewed-by: Neil Roberts <neil@linux.intel.com>

Reviewed-by: Neil Roberts <neil@linux.intel.com>

Reviewed-by: Neil Roberts <neil@linux.intel.com>

Reviewed-by: Neil Roberts <neil@linux.intel.com>

This adds much more comprehensive support for gobject-introspection
based bindings by registering all objects as fundamental types that
inherit from CoglObject, and all structs as boxed types.

Co-Author: Robert Bragg <robert@linux.intel.com>

Reviewed-by: Neil Roberts <neil@linux.intel.com>

The private header is needed as the cogl_texture_get_format API was made
private, so that C4013 (implicit declaration of ...) warnings/errors can
be avoided

Reviewed-by: Neil Roberts <neil@linux.intel.com>

One symbol was missed when the cogl-path code was split out from Cogl...

Reviewed-by: Neil Roberts <neil@linux.intel.com>

Remove the symbols that are now in cogl-path (where cogl-path.symbols
already include), and add the symbols that were added to the Cogl API.

Also add internal symbols as required by cogl-path and cogl-pango.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

The DriverCallback is a function that is defined by the Windows SDK 8.0+
headers, which was initially used for device driver development.  The use
of DriverCallback would cause a clash, causing things to break when built
with newer Windows SDKs, so rename DriverCallback to CoglDriverCallback to
avoid this problem.

Reviewed-by: Neil Roberts <neil@linux.intel.com>