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highpoly
09-09-2009, 05:57 AM
I am hardware buffer rendering point-type particles (HW) and getting some very different results depending whether the 'geometry mask' is on or off. That seems strange to me since I thought that was just a way to exclude geometric object from the hardware render. So why would these hardware particle being all that is visible at render time be affected by this change. The geo masked ones look better and denser and look just like when using the Maya Render Buffer and selecting 'hardware as the render type'. Other odd thing is I turned on 'hardware alpha' for both but only the non-geo masked ones got an alpha. as you can see below.

other info..the can on the left is camera projected from background plate to a 3d can. the can is the emitting object and a baked version of the projected texture is linked to the texture emit color slot of the particles. the can visiblity if off at rendertime. the can render is done separately in a software render. THe particles blow off the can and revel a glass one underneath. using Maya 2009.

can anyone explain why getting different results????
thanks!



http://www.geocities.com/highpoly/geomask.jpg

highpoly
09-10-2009, 06:00 AM
well, i ended up giving it a go with the hardware renderer instead of the HRB and got the results in expected with a nice alpha and geo mask worked as it should. Guess just stick with that one from now on...

Tornado7
09-10-2009, 08:39 AM
Very nice effect! Congratulation!:thumbsup:

Francesco

highpoly
09-10-2009, 04:00 PM
thanks..i did a short clip the end result here (http://www.geocities.com/highpoly/coke_sm.mov)...pretty happy with the result since switched to hardware render :D

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