SDL will fail to construct an OpenGL 3.x/4.x context on Mac OS X,
unless ContextProfileFlags.CORE is specified.
Fixes issue #44
Upstream enhancement request at
https://bugzilla.libsdl.org/show_bug.cgi?id=2342
When running over remote desktop without hardware acceleration, there
are no GraphicsModes that support desktop composition. This patch adds
logic to avoid requesting composition-capable modes when running over
RDP.
Additionally, it changes the mode selection logic to consider modes that
support features partially (e.g. 16bpp color instead of 32bpp), albeit
with a heavy penalty over fully supported modes.
This patch adds a workaround for WM_STYLECHANGED messages that are not
delivered when running on Mono/Windows. If we detect Mono, then we call
HandleStyleChanged() directly in order to update the internal state of
our WinGLNative instance.
OpenTK now directly calculates the elapsed time between UpdateFrame
(RenderFrame) events and compares that directly to TargetUpdatePeriod
(TargetRenderPeriod). This significantly simplifies the implementation
and improves timing stability.
PlatformFactoryBase provides a common base interface for platform
backends. Platform backends should inherit from PlatformFactoryBase in
order to reduce code duplication.
LegacyJoystickDriver implements the legacy IJoystickDriver interface
(GameWindow.Joysticks) in terms of the new IJoystickDriver2 interface
(OpenTK.Input.Joystick).
This removes a large chunk of code from each platform backend, as they
no longer need to implement IJoystickDriver themselves. Additionally,
it adds support for device hot plugging which was previously missing.
This patch modifies GameWindow.Run() to use a single stopwatch instead
of two separate stopwatches for timing UpdateFrame and RenderFrame
events.
It improves timing accuracy for issue #20 (FrameEventArgs.Time
Inconsistencies)
DeviceAdded already checks that devices conform to the desired usage
pages. Checking again in DeviceRemoved is unnecessary - if a device
exists, then it has already passed muster.
JoystickAxis/Button.Last is used internally to allocate the correct
amount of storage for joystick axes and buttons. JoystickAxis.Axis10 is
required to support the maximum number of axes available on Mac OS X.
SDL2 uses a weird system of device ids and instance ids to report
joystick events, where the ADDED event uses a device id and the rest use
instance ids.
The SDL2 joystick driver is now fixed to correctly distinguish between
the two, which fixes hotplugging support for joystick devices.
SDL GameControllerAxis and GamePadAxes are not interchangeable. The
driver will now correctly interpret incoming SDL messages and update
the GamePadState for the relevant axis.
GamePadState.SetAxis() receives a GamePadAxes enumeration, which is a
bitmask of the axes we wish to set. SetAxis now correctly decodes the
bitmask to apply the values we are interested in.
When combining OpenTK with a third-party OpenGL toolkit, it is now
possible to implement a suitable GetAddress() and GetCurrentContext()
implementation in terms of the third-party toolkit. If no
implementation is specified, then OpenTK will try to guess the most
suitable implementation within its own platform backends.
If no custom implementation is defined, and if no suitable
implementation can be found, then OpenTK will throw a
PlatformNotSupportedException. If a suitable implementation is found or
defined, then OpenTK will attempt to load OpenGL entry points using
that implementation.
In this case third-party toolkit remains solely responsible for
managing its context via its MakeCurrent(), SwapBuffers(), etc
implementations.
DummyGLContext will now attempt to load OpenGL and OpenGL ES entry
points when a suitable OpenGL context is current on the calling thread.
This allows OpenTK to be used on contexts created through third-party
toolkits.
CreateGetAddress() constructs a GraphicsContext.GetAddressDelegate that
is suitable for the current platform. This can be used when combining
OpenTK with an OpenGL context created through a third-party toolkit.
The functions defined in libdl.dylib are useful in more places than
just AglContext. Moving them to their own class ensures we can access
these from wherever we might need them.
CGL appears to work with both AGL and NSOpenGL contexts, whereas AGL is
limited to AGL contexts. This allows us to be more flexible in terms of
implementation (i.e. we can use Cgl.GetCurrentContext to retrieve a
handle to a context created through SDL, which uses NSOpenGL
internally.)
When the user requests a GraphicsMode that is not directly supported
by the GPU/drivers, we should relax the requested parameters until
we find a supported mode. An exception should only be thrown when
there is no usable mode.
This makes the X11 backend match the behavior of Windows. The SDL/X11
backend works a little bit differently, in that it falls back to the
a default mode directly if the requested mode is not available. There
is nothing we can do about that.
The _NET_FRAME_EXTENTS atom is implemented differently by
different window managers, when window decorations are hidden
with Motif. Unity returns a 0 size, while Gnome 3 returns the
previous size.
This patch removes that ambiguity: when decorations are hidden,
border size becomes zero. This should work everywhere, unless
some window manager decides to troll us by decorating the window
when we explicitly request no decorations. Sigh...
Windows can now be resized programmatically, even when they have
WindowBorder.Fixed. All resizing logic is now consolidated in the
Bounds property, and ConfigureNotify messages are now handled
correctly depending on their source (StructureNotify or
SubStructureNotify.)
