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Z-buffer? (Read 1974 times)
mkn
Z-buffer?
May 7th, 2005, 7:40pm  
Can the Z-buffer be read and written to similar as the pixel array?
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JohnG
Re: Z-buffer?
Reply #1 - May 7th, 2005, 8:15pm  
I think you can to some extent.
(at least in ALPHA you could)

g.zbuffer[] is similar to pixels[], but is an array of floats I think.

Edit: Having just checked, I'm not sure it's the same with BETA unfortunately. Probbaly because of all the P3D/OPENGL stuff.
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fry
Re: Z-buffer?
Reply #2 - May 7th, 2005, 8:18pm  
in P3D yes, but not with OPENGL. tho it's in zbuffer coordinates (not z values) so you're gonna get some weirdness when you mess with it.

this oughta work: Code:

PGraphics3 p3 = (PGraphics3) g;
println(g.zbuffer[300]); // gimme a value, it's an array of floats
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seltar
Re: Z-buffer?
Reply #3 - May 18th, 2005, 3:31pm  
I'm having some problems with this z-buffering..
the code you provided didn't work, and you can see, my sketch is pretty messed up
http://wliia.org/projects/walkaround/

Is there any way to calculate which tree should be rendered first, or another way to use this zbuffer?
It looks pretty lame when the tree furthest away is in front of the tree you are standing right in front of

by the way, all the textures and "level" is temporary, when the code works, it'll get better..

-seltar
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