Blending

if you disable the depth mask it wont write to the zbuffer, which is more or less what you want for transparent objects (that you draw AFTER all solid geometry). disabling the whole depth test would let your transparent geometry draw over solid geometry that is in front of it (not what you want).

of course disabling depth mask for solid stuff will look weird if it doesnt happen to draw back to front.

In my scene, I have only one object that I can set to blend or to solid. When I make it transparent using the depth mask, it looks fine, but when I take off the depth mask (when I write to the depth buffer) my object becomes all weird with some places that are black, and others that show the triangles that compose the quads, etc...

I could post the code or an executable, but my code isn't very clear (I dont think). I'm just trying to make a class to encapsulate some OpenGL functionality... I'll post some of the code later because I can't right now...

But now that I think about it, you can't use fog without depth testing, thats what fog is based on, so my new question is, how can you make an object transparent with fog in the scene...?

[edited by - Infuscare on November 27, 2003 10:17:42 AM]

some1 please? how do you use transparency and fog at the same time?

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"Why, why why does everyone ask ''''why'''' when ''''how'''' is so much more fun"
-Spawn 1997