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

• Subject: Re: depth testing: none of them seems to be correct?
• From: Karan Lyons <email@hidden>
• Date: Fri, 13 Jul 2007 13:49:54 -0400
• Delivered-to: email@hidden
• Delivered-to: email@hidden

Namaste,
Karan

On Jul 13, 2007, at 1:47 PM, Roger Bolton wrote:

On 13 Jul 2007, at 18:01, Karan Lyons wrote:

Does this seem right?<depth test possible fix.qtz>Namaste,
Karan

you've changed the layer order around.

that works for the simple case here... but try this version... the blue layer is changing z position and no matter
what layer ordering you use it will be render incorrectly some of the time.

in my more complex case the shapes are generated by an iterator with random z positions so its not possible
to order their draw order manually.

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?

Roger
CoreMelt

<depth test alpha problem3.qtz>

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