Re: [MiNT] Bit-Depth and Graphics stuff....

[Peter Persson <pep.fishmoose@gmail.com>]

7 jul 2010 kl. 20.09 skrev Jo Even Skarstein:

> No, the way to do this is to first transform the bitmaps to a generic
> format (such a format already exists in VDI for 8 bit and less), and
> then transform this generic format to the screen format.

Is this a good idea in truecolor?

To be honest, it's not even a good idea in palette modes, because performance is just horrible. A chunky2planar conversion -> buffer which is then blitted to the screen is just so much faster.
Using the Device Independent format in 8bpp chunky just means losing tons of CPU, because you'll first convert a chunky bitmap to consecutive planes, then the VDI will convert that image back to chunky.

Since he has to add custom code for hicolor/truecolor, wouldn't it make sense to add conversion code for palette modes as well? Patrice, correct me if I'm wrong, but I'm 99.999% sure SDL does this).

-- PeP