DCON improvements...

[Albert Cahalan]

David Woodhouse writes:

> If we should design a next generation of DCON chip, are there any
> improvements we should make to it?

Sure. Bugs #1017 and #1671 could be dealt with.

There are some really nasty color artifacts on the display.
One must never do any sort of blending operation on non-linear
video data. The swizzle convolution must be color-balanced.

To see some of the artifacts, use this test image:
http://wiki.laptop.org/go/Image:Zone_plate_boys.png
(you must view it unscaled; the web browser will ruin it)
Notice the colored swirls. Notice the huge color shifts
in the color patch area. Notice the brightness changes in
the noise patches. Notice that even the lines have color.