unseenmenace wrote:Is it just me or to draw a masked sprite (without the use of a separate mask bitmap)
You have to use a mask. This is not particular to Blitter, it is exactly the same if you want to do a transparent blit with VDI software. Check many of the VDI blitting examples on transparent blitting.
You don’t need a prebuilt separate mask, it is easy to generate it a runtime. Again, VDI samples show how to do it.
Disregarding hardware or system, it is plainly impossible to make a transparent blit from a simple graphic. How the hardware (or the software) can know what is transparent in the graphics and what is not? In Windows DirectX, for example, you use either a key color or alpha blending.