Bumpmapping figured out

[DCEmu_Newsposter]

quarn has been doing a bit of research on how bumpmapping works on the DC, and he has posted his finding over at boob! (http://www.boob.co.uk/) [br][br]I decided that it was time to figure out how the bumpmapping works on the dreamcast. Remembering that there was a maple bus patent available, I could quickly search and find another patent (http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=1&f=G&l=50&co1=AND&d=ptxt&s1=polar&s2='bump+mapping'&OS=polar+AND+%22bump+mapping%22&RS=polar+AND+%22bump+mapping%22) describing how the bumpmapping used by the pvr2dc is used. For your convenience I have compiled a pdf (http://www.boob.co.uk/docs/BumpmapPatent.pdf), created a tool (http://www.boob.co.uk/files/dcbumpgen.tar.gz) for creating bumpmaps, and also made an example (http://www.boob.co.uk/files/bump.tar.gz) showing how to use bumpmapping with kos.[br][br]Enjoy! =)

[Darksaviour69]

sorry posted in the wrong forum :-[

[iq_132]

Great news! I can't wait to see this being used :)

[josemci]

Can this boost DC's homebrew graphics?

[Mekanaizer]

Hi.

josemci no, Bumpmapping is just a Texture effect that DC does by HW.

Look here to see what Bumpmapping is:
http://www.gamedev.net/reference/articles/article1903.asp


-Mekanaizer-

[Mental2k]

Could this be implemented in Quake, to give a teneabrae like effect on the DC version of quake?

[Mekanaizer]

Hi.

Here is the bumpmapping example compiled:
http://mekanaizer.planetaclix.pt/files/bump.zip
(the *.bin inside that Zip file is unscrambled)

all thanks go to quarn

-Mekanaizer-

[GPF]

pretty cool.

Thx for the precompiled example.

Troy

[Imerion]

Can this boost DC's homebrew graphics?

josemci no, Bumpmapping is just a Texture effect that DC does by HW.

Look here to see what Bumpmapping is:
http://www.gamedev.net/reference/articles/article1903.asp

-Mekanaizer-

But indirectly it will boost the gfx, right? If people learn to use it there is a new possibility to make game better-looking...

[warmtoe]

pretty cool.

Thx for the precompiled example.

Troy


It's pretty cool - but it no worky in CHANKAST... just a warning!

[kgenthe]

"boost" graphics may be the wrong term. "give the potential for homebrew games to look better" is more like it. Look at Halo and Halo 2 on the Xbox. Halo 2 had just about everything bumpmapped, and the graphics look that much better because of it.

[q_006]

anyone done any work with bumpmapping yet?