In blitzmax it's easy: set the blendmode to alphablend, en you can use the setalpha command to specify the level of opacity.
The big difference is that BlitzMax uses 2D-in-3D where the 3D video accelerator takes care of any blending and rotating. blitzplus is pure 2D, which means that you'll have to do the math for blending each individual pixel by the CPU, which is much slower... And there are no built-in functions that will do this for you.
The big difference is that BlitzMax uses 2D-in-3D where the 3D video accelerator takes care of any blending and rotating. blitzplus is pure 2D, which means that you'll have to do the math for blending each individual pixel by the CPU, which is much slower... And there are no built-in functions that will do this for you.