Blender Git Loki

BGE VideoTexture: 3D support+performance boost on DeckLink.

ImageViewport will now skip the unnecessary RGBA32 filtering if the capture
is already in the RGBA format. This will be the case if alpha=True and no
filter is set. This saves a great deal of CPU.
Add swap attribute to DeckLink to skip pixel format conversion between
VideoTexture internal (RGBA) and DeckLink (BGRA). This is to test the
benefit of passing the image directly to the board without intermediate
copy => great boost of performance.
However, it will be necessary to change the VideoTexture internal pixel
format from RGBA to BGRA.

3D stream is now fully supported on DeckLink, the right eye image is
passed via a new 'right' attribute (name not definitive). To generate this
image one can simply put a second camera to figure the right eye and
capture its view with ImageRende.