Layers higher than 1 don't clear when resized/projection change.

[Brandon502]

To reproduce setup a 2D fixture. Set layer 1 to stop at (1,1,1), create a layer 2 and have the entire fixture. When layer 2 size is changed the pixels are not cleared to black. This is tied to global blend value, so likely the pixels are being cleared but not using a blend value of 0 (255) so a faded effect remains.