Blending modes

Java 2D
#1

For GoSub, i wondered about the addidion of new blending modes into Java2D. For years, that was not done and i still don’t know why.
Any clue?

#2

What modes exactly do you have in mind? As I understand, we now have all Porter-Duff rules already in AlphaComposite class.

And you have an alternative to use your own implementation of the Composite interface to define your own composite rule.

#3

Hello.
I was thinking Additive, Substractive, Multiply and Divide.
Of course, i can implement those myself, but that would break your accelerated pipeline, which is something i really don’t want.

#4

Yes, it is exactly one of the fatures I need for my special effects. i.e. Additive is particularly useful for light effects.

I do it by sw at the moment. See my ExtensibleComposite here: http://www.java-gaming.org/cgi-bin/JGNetForums/YaBB.cgi?board=2D;action=display;num=1089907350

Nice point Pepe.

#5

Not only it is useful, but it’s necessary for most games. GoSub would have been a rtype clone if i had additive… (would then have been less original, but could have been funnier, visually talking)

#6

[quote]For GoSub, i wondered about the addidion of new blending modes into Java2D. For years, that was not done and i still don’t know why.
Any clue?
[/quote]
It’s something that we could certainly consider, but we would never know it was “in demand” if you don’t file an RFE! If you think of a feature that is not already available in the Java 2D API, please file an RFE for it, and we’ll give it some consideration.

Chris

#7

awww. believe it or not, i thought someone already did… i can’t believe it was not the case.
I remember Jeff (and many others) saying on first JGO board that it had to be implemented for 1.4, as it was very needed…

RFE submitted. review id 301368.

#8

thanks, we got the rfe today (sorry, don’t remember the bug id off hand)…

#9

hehe. just got it.
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5094232

not visible actually, but will be soon.
thanks a lot !!!
( crossing fingers for an implementation soooooon. Oh, please, people, don’t rant about Sun slow reaction, or your feeling that it will never be done. While it’s a possibility, you certainly already said it hundred times. Thanks to you also. ;D )

#10

And many thanks go to:

pepe
this forum
the java2d team

Cheers,

Mik