The parameterless Platform::Context::Context() constructor and
Platform::Context::tryCreate() function are deprecated in favor
functions that take argc/argv pair. The Context class now accepts
arguments starting with --magnum-* prefix. Currently there are none
except for the implicit --magnum-help, but that will change with the
following commits.
AMD is behaving the same as NVidia (at least on Windows) -- when
creating core context with minimum specified version set to 3.1, it
forces that version instead of going with the largest available version,
which, again, is pretty useless behavior.
Enabling that on both Linux and Windows, the behavior is confirmed on
Windows but I bet it's doing the same on Linux.
In some cases the GL context creation might success without error, but
the created version is one that we don't want (e.g. software GDI
rasterizer on Windows). Previously the Context class constructor just
exited the application and it was impossible to react on that from the
application side (for example reducing some context feature
requirements).
Now there is Platform::Context::tryCreate(), which returns either
created instance or `nullptr` if the instance creation failed with some
error. That is now used in all Platform::*Application implementations.
Mesa needs at least GL 3.1 to create core contexts and it creates
context with highest possible version. Great. Requesting that on binary
NV drivers will force the version to 3.1, which is, to say it mildly,
useless.
Thus, when binary NV drivers are detected, the core context is destroyed
and we're starting over, requesting compatibility 2.1 context, which
properly returns GL 4.5. Uhh.
The camera now accepts generic projection matrix instead of providing
functions for setting orthographic/perspective projection. This allowed
to completely get rid of the AbstractCamera->Camera*D inheritance
hierarchy and everything is now done through one templated Camera class.
The Camera2D::setProjection(), Camera3D::setOrthographic() and
Camera3D::setPerspective() are deprecated, use
Camera*D::setProjectionMatrix() in combination with
Matrix3::projection(), Matrix4::orthographicProjection() and
Matrix4::perspectiveProjection() instead.
The Camera3D::near() and Camera3D::far() getters are removed. The user
is advised to cache the values on application side if they are really
needed. More general queries for all six clipping planes (*not*
distance) might be implemented later.
The AbstractCamera, AbstractBasicCamera2D, AbstractBaseicCamera3D,
AbstractCamera2D and AbstractCamera3D types are deprecated as there is
no such type anymore, use Camera, BasicCamera2D, BasicCamera3D, Camera2D
and Camera3D instead.
The AbstractCamera.h, AbstractCamera.hpp, Camera2D.h, Camera2D.hpp,
Camera3D.h and Camera3D.hpp headers are deprecated, use Camera.h and
Camera.hpp instead.
As always, all deprecated features will be removed in some future
release.
If implemented by the user, it is called periodically after processing
input events and before draw event and does not depend on whether there
are any input events or the application needs to redraw.
Sorry that it took ages. Oh, actually, I'm not able to test this AT ALL
because my awesomely amazing NVidia Optimus laptop CANNOT (what?!) do
VSync because of some bad design decisions from previous century that
led to the disaster that we now know as X11 and as I heard it is
impossible to work around that or something. Ugh.
It returns CGL version and not the GL one, obviously. The original check
was suspiciously broken so I "fixed" it in
d54be041c4 and rendered this class
practically unusable. Sorry.
Unline *Application libraries, which are commonly linked only to the
final executable, the *Context libraries are often linked to
"intermediate" dynamic libs.