[Ldlite-development] Re: Off screen rendering

[Don H. <dh...@ho...>]

>LDLite already does of-screen rendering.  The windows update is
>a bitblt from memory to the screen, and I've often thought about
>adding scroll bars or stretching the result.  I don't know how to
>not have a window pop up (especially since some initialization may get
>kicked-off by the initial window update message), but I could probably
>get it to launch as an icon down in the toolbar so it doesn't clutter
>the screen.

Oops, I just checked a new ldlite.cpp and ldlitecommandlineinfo.cpp
into CVS.  It creates and draws in an offscreen buffer in
InitInstance() when the commandline contains a -MS (capital S).
The best I could do was hide the unused window so you may not
want much of this.  Take a peek at the diffs and see if there's
anything worth keeping in there.  I think I only changed the code
in 3 places.

>BTW, is the "-H" flag used for anything?  I'm adding support to make
>the transparent halftone (dither) checkerboard be larger than 1 pixel
>so that the effect survives image scaling.

I checked, and -H is unused.  Rats!  Now you're gonna make me
generate halftone patterns on the fly for glPolygonStipple().
Oh well, that code needs some cleaning anyhow.  I still have a
bunch of junk code lying around from when I thought a random
stipple pattern would be really cool.  It wasn't.  It was
actually pretty awful looking.

Have fun,

Don




_________________________________________________________________
Help STOP SPAM with the new MSN 8 and get 2 months FREE*  
http://join.msn.com/?page=features/junkmail