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.

build until further fixes are made.

on Windows if using Visual Studio; if using MinGW, try to stick to the
original main() entry point.

do not open a console at startup.

it later. AGAIN.

it later.