[Open-graphics] Open exercise in developing test logic (video)

[Timothy Miller]

On 10/3/06, tsuraan <tsuraan at gmail.com> wrote:
>
> > 2. Output a real video frame
> > 2.1. Just syncs with constant data (all white screen)
> > 2.2. Ramp (left edge is black, right edge is white)
> > 2.3. Other test patterns like a box with an X in it the size of the
> screen.
>
> Would the X11 "blank screen" (the single-pixel checkerboard pattern it uses)
> be useful?  I've always thought of it as a monitor test, but maybe useful
> for a video card?
>
> Also, a few months ago, a there was a lot of talk about gamma correction.
> Would displaying colors (or greys) that are gamma-adjusted linear gradients
> be useful?

This is more of a "does the hardware work" test.  We're quite far from
having anything that can have any kind of normal display.  Here, I'm
talking about writing Verilog code that does nothing but generate sync
signals.  Just a little bit of logic for the FPGA that just has a few
counters.