Re: depth testing: none of them seems to be correct?

• Subject: Re: depth testing: none of them seems to be correct?
• From: Allan Schaffer <email@hidden>
• Date: Fri, 13 Jul 2007 10:54:21 -0700
• Delivered-to: email@hidden
• Delivered-to: email@hidden

I'm a bit confused, I thought the point of depth-testing was that you didn't have to manually order every layer,
and that it would correctly handle cases where layers z depths was reversing.

is there a way of having correct depth testing with alpha blending or am I hitting a limitation in the quartz composer
engine?

No to both - this is a general characteristic of Z buffer + alpha.
Alpha transparency requires the geometry be sorted from back-to-front.

Allan
___________

Allan Schaffer
2D & 3D Graphics Evangelist
Worldwide Developer Relations
email@hidden

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