Hi all, I was looking into how to get the x.org server running with color on non-AGA Amigas. As you may remember, it is currently working with 256 colors on AGA-equipped Amigas and black/white on others. Looks like the server wants to use 8bpp memory layout for depth 4 (16 colors), defined in xf86Init.c formats array. This differs from old Xamiga which used 4bpp with depth 4. Working solution seems to be creating the shadowfb with 8bpp and depth 4, and then handling conversion from 8bpp pixels to 4 bitplanes in the shadow update function. For the conversion it needs a new shadow update function, which is pretty similar to existing shadowUpdateAfb4, just reading 8-bit input pixels instead of 4-bit pixels. Patch attached. Any thoughts? --jukka
Attachment:
x4bpp.diff
Description: Binary data