Dear AROS Expert:
I am a gamecoder and I have some questions about 32bits per pixel gfx modes of 1280x1024 or higher resolution on Raspberry Pi.
Is it possible for me to perform Hardware Assisted AlphaBlitting when using AROS?
Or must I do all alphablending using the CPU?
I can do it with the CPU and all that... its just that gfx chips are alleged to blit faster than CPUs. For that to be true they would have to support AlphaBlitting.
AmigaOS3.x does not have any sort of built-in support for AlphaBlitting. AFAICT I am required to do all alphablitting with the mighty 68060 CPU.
AmigaOS4.x has built-in AlphaBlitting in the OS with functions that look like normal AmigaOS style blitting functions.
I assume MorphOS has AlphaBlitting but I didn't check.
Whilst AROS won't have exposed it yet, the Raspberry Pi hardware actually has a really powerful 2D compositing hardware built in, that Wayland will make use of within Linux.
I forget where I read this originally, but elsewhere I read that the hardware can blend one gigapixel per second:
http://www.raspberrypi.org/archives/4053
