Nevermind. I just tried this on an old CRT and it was smooth as silk.
Performance of the alpha blit is VERY good.
Sadly, this likely means I can't use an LCD display as my display
device for games unless it not only syncs at 800x600 at 56Hz, but
actually uses 56Hz as it's native refresh. This seems unlikely to me
since most are centered around 60Hz.
--- In "gamehoser" <> wrote:
>
> Ok, at this point I have my sprite engine converted over to use the
> new bitstream if it's available. I do notice now though that since
> the boards vertical is running at 56Hz, although my LCD will sync to
> it, it seems to give me a hitching type behavior on my LCD during
> smooth motion that was not present when using the default loadout that
> sync'd at 60Hz. Is there something I can do to compensate for the
> refresh rate difference? I am waiting for the vsync, but I think the
> vsync rate change is the problem in this case. There is no other
> timing code in my simple application other than using the vsync. Any
> ideas what might be going on? Jesse?
>
> James
>
> --- In "Jesse Off" <joff@> wrote:
> >
> > A new experimental bitstream and kernel module is available for
the TS-
> > 7300 enabling 800x600 resolution and transparent bitblt'ing.
> >
> > ftp://ftp.embeddedARM.com/ts7300_cyclone2_800x600.rbf
> > ftp://ftp.embeddedARM.com/ts7300fb-800x600.o
> >
> > The transparent bitblt'ing is enabled by bit 12 of the vidctrl
register
> > at 0x72000038. When 1, bit 5 of each pixel is looked at before being
> > blitted. If bit 5 is 1, the pixel is blt'ed, if not, the original
> > pixel is unmodified.
> >
> > This development work was funded by Peter Elliot.
> >
> > I will be documenting this more shortly.
> >
> > //Jesse Off
> >
>
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