🚀 go-pugleaf

>>True, this must be done as a linear byte-by-byte organization technique,
>>but a friend told me it was possible to have an image like that on the
>>Amiga.  I can't speak of the ST, though.
> 
> No, you can't get out of interleaved bitplanes on the Amiga.  However,
> you can use the Amiga's Copper coprocessor to update the background
> color register on a blank screen every 4 cycles which means each pixel
> corresponds to a word in memory containing any of 4096 colors.  
> Unfortunately with rather low horizontal resolution...

Now that I think about it, I believe that was something towards what he 
said.  Then again, with the introduction of the Amiga's 256 color chip...

>>> I think I posted about texture mapping about a year ago in alt.sys.amiga.demos
>>> or comp.sys.amiga.programmer.
>>
>>Same type of system?
> 
> Yes.  I can't seem to recall reading about the algorithm anywhere else
> [i.e. SIGGRAPH] but I think it came to me when a friend and I
> were coming up with ideas for a hypothetical video coprocessor and I
> saw extremely smooth scaling in a Sega arcade game.  I imagine this
> is the method implemented in hardware.

Things like that are typically implemented in the hardware.  I tried to 
pull it off in a standard IBM VGA mode (320x200x256).  It flickered 
badly.  I then moved to the tweaked VGA modes (such as 320x200x256x4 pages).
I was able to pan the screen smoothly in all four directions without a 
flicker.

Take care,
Josh