Shader::SetUniform override, and implement most of the FBO code for
the Direct3D backend.

projects, we now use Video::SetClearColor, Video::SetClearDepth and
Video::Clear instead, so that the Direct3D equivalents can be called.

Added RayCastResult & a naïve integration for EasyCharacterController.
Enjoy !

supported yet).

it to DirectX.

Indeed

Character integration better but still not working.

being displayed in the scene.

of capsule divisions.

we want Xinput but not D3D (ie. OpenGL).

any events if there is no X window.