7 replies to this topic

[moulinaie]

Just for the pleasure to do it!



Guillaume.

[kl99]

nice demo, why do the chars seem to have one pixelcolumn missing (=black)?

[moulinaie]

kl99, on Sat Nov 26, 2011 4:32 AM, said:

nice demo, why do the chars seem to have one pixelcolumn missing (=black)?

Thanks!

I noticed that! I think it's because the copy from CPU to VDP ram is slow, so the leftmost characters are defined *before* the rightmost ones.
So they scroll left one pixel before the next character is scrolled and this makes a black column appear.

If I could synchronize the transfert with the display... But I don't know how to do.

Guillaume.

[sometimes99er]

Very nice.

Quote

... seem to have one pixelcolumn missing

I would definitely have to say that it's a programming error, and one that can be resolved. I even think I ran into the same "effect" (error) when doing my Hellraiser demo back in April 2005.

[moulinaie]

kl99, on Sat Nov 26, 2011 4:32 AM, said:

nice demo, why do the chars seem to have one pixelcolumn missing (=black)?

Well, you were right, that was a bug in the program..!!
I fixed it and posted a new video with colors inverted.



Thanks for pointing at the problem.

Guillaume.

[RXB]

Cool, very nice work.

[moulinaie]

Thanks!
Here is the ZIP file with sources codes (TXT = precompiler, BAS = Extended Basic and the TIDisk file for emulators)
http://gtello.pagesp...r/mlcscroll.zip

Guillaume.

[RXB]

I am working on a similar project thanks.