Forum Groups
  All forums
    Help & Feedback
      Questions
      Work in progress
      Finished Art
      Non-Max related
    Community
      Offtopic
      News
    Hardware
    Photography



Maxunderground news unavailable

Is there really no way for opacity maps to cast accurate shadows using Shadow Map in Scanline?
show user profile  mattymoose
Seriously? This is killing me! Is there some way to get raytraced shadows cast by opacity maps to have soft edges?


read 663 times
8/6/2009 10:21:50 AM (last edit: 8/6/2009 10:21:50 AM)
show user profile  Dr. Jim
Havent tried in years....but AFAIK: NO.
read 655 times
8/6/2009 10:30:39 AM (last edit: 8/6/2009 10:30:39 AM)
show user profile  ulisei
divide your light into severals, the multiplier too
and give them each a slightly different position from the origin...




read 643 times
8/6/2009 10:56:48 AM (last edit: 8/6/2009 10:56:48 AM)
show user profile  Dr. Jim
That would technically work...but realistically it would take ALOT of lights to actually get a soft edge without multiple, visible hard lines....


read 639 times
8/6/2009 11:00:03 AM (last edit: 8/6/2009 11:00:03 AM)
show user profile  superclutz
i had some problem with opacity maps too. but let you know a quick fix for a problem i found, if your ever needing a sun or glow behind an opacity map,
you must make a sun matrl instead and put it on a sphere and use that as a phys sun eg. What you see"") and omni light to light up the area. because if you tell a light or object, to have "glow" then it will show the edge of the plane or object and will cast shadows as a plane not the opacity mapped pattern. i wish there was a way to get what your asking for though that would be cool but i have tried and tried all kinds of ways with different lights but nothing. sorry.
Photobucket

read 598 times
8/6/2009 3:38:39 PM (last edit: 8/6/2009 3:38:39 PM)
show user profile  advance-software
It does suck. It's a very easy fix in the code if anyone could be bothered to do it.

That is if what you mean by a shadow map is what I mean = a depth map projected from the light source.
read 594 times
8/6/2009 3:41:29 PM (last edit: 8/6/2009 3:43:25 PM)
show user profile  Dub.
Can't you just turn on soft shadows?


read 582 times
8/6/2009 4:22:58 PM (last edit: 8/6/2009 4:22:58 PM)
show user profile  mattymoose
can't you just turn on soft shadows?

Thats what I'm asking. How would I do that?

superclutz - if you feel the need to make an opacity map glow, you can use the post-effect glow in "Unclamp" mode rather than applying it to a material or object. That way, any parts of the scene that are white (or near white) will have a glow applied to them. Of course it will still cast shadows as a plane, but you can turn off shadowcasting on a per-object basis. By the way, did you get that info about the rap that I emailed?


read 580 times
8/6/2009 4:24:11 PM (last edit: 8/6/2009 4:29:05 PM)
show user profile  superclutz
"did you get that info about the rap that I emailed? "


nope.

send to



or send it to


that should work.
Photobucket

read 562 times
8/6/2009 4:45:40 PM (last edit: 8/6/2009 7:41:38 PM)
show user profile  mattymoose
sent it to sparkzhen a couple weeks ago, check you mailbox - it would be from smoothcriminal@fan.net


read 554 times
8/6/2009 5:01:57 PM (last edit: 8/6/2009 5:01:57 PM)
show user profile  superclutz
ok man i got you. give me a few days. mic will be here tomorow. my mic is being borrowed atm. so 1 of my friend is letting me borrow his. we might both deside to rip it.
Photobucket

read 542 times
8/6/2009 7:44:03 PM (last edit: 8/6/2009 7:44:03 PM)
show user profile  Dub.
how bout this?

-----------



read 529 times
8/6/2009 10:41:04 PM (last edit: 8/6/2009 10:41:04 PM)
show user profile  mattymoose
dub - works for me, thanks! I guess "transparent shadows" is the setting I was missing - I thought it meant something different when I was looking at area shadows.

clutz - no hurry man, whenever you get a mic, a few minutes, and some lyrics let me know.

New Question (not really a problem) - what exactly does the "premultiplied alpha" checkbox do, besides fuck up my texture edges?


read 515 times
8/7/2009 9:57:04 AM (last edit: 8/7/2009 10:39:20 AM)
show user profile  Garp
Matty, are you being lazy? ;)
F1 > Glossary > Premultiplied Alpha.




read 487 times
8/7/2009 9:44:55 PM (last edit: 8/7/2009 9:44:55 PM)
#Maxforums IRC
Open chat window


Support Maxforums.org