Cycling 74 » Topic: @blend_enable and windows 7 http://cycling74.com/forums/topic/blend_enable-and-windows-7/feed Thu, 20 Jun 2013 05:23:35 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/blend_enable-and-windows-7/#post-48261 <![CDATA[@blend_enable and windows 7]]> http://cycling74.com/forums/topic/blend_enable-and-windows-7/#post-48261 Fri, 05 Feb 2010 18:37:48 +0000 joshua goldberg hi all.

i’m porting an older patch to windows 7 for the first time and i’m having some trouble.

toggling blend_enable on the two videoplanes in the patch below makes them vanish. is there a known workaround to this?

max 5.1.2, windows 7, newest quicktime, running on a macbook pro in bootcamp with an nvidia card.

many thanks in advance.

– Pasted Max Patch, click to expand. –
]]> http://cycling74.com/forums/topic/blend_enable-and-windows-7/#post-173569 <![CDATA[Re: @blend_enable and windows 7]]> http://cycling74.com/forums/topic/blend_enable-and-windows-7/#post-173569 Fri, 05 Feb 2010 19:29:17 +0000 Joshua Kit Clayton First suggestion: disable depth testing in your jit.gl.videoplane objects.

As mentioned before, depth buffers are not necessarily up to our control on windows, as under many circustances, they are always created by the driver regardless of our request. Whenever you want to do transparent, composited videoplanes, I’d recommend @depth_enable 0

]]> http://cycling74.com/forums/topic/blend_enable-and-windows-7/#post-173570 <![CDATA[Re: @blend_enable and windows 7]]> http://cycling74.com/forums/topic/blend_enable-and-windows-7/#post-173570 Fri, 05 Feb 2010 19:48:43 +0000 joshua goldberg both of the videoplanes in that example have @depth_enable 0 set. it’s still not working. setting it explicitly on the render object still doesn’t make it work. as soon as i set @blend_enable 1 on a videoplane, it vanishes.

]]> http://cycling74.com/forums/topic/blend_enable-and-windows-7/#post-173571 <![CDATA[Re: @blend_enable and windows 7]]> http://cycling74.com/forums/topic/blend_enable-and-windows-7/#post-173571 Fri, 05 Feb 2010 20:11:31 +0000 joshua goldberg aha. thank you luke. it would appear that jit.dx.grab on windows 7 outputs a blank alpha channel instead of a white one. using a jit.op @op ~ pass pass pass after the jit.dx.grab solves the problem in this patch.

]]> http://cycling74.com/forums/topic/blend_enable-and-windows-7/#post-173572 <![CDATA[Re: @blend_enable and windows 7]]> http://cycling74.com/forums/topic/blend_enable-and-windows-7/#post-173572 Fri, 05 Feb 2010 20:21:20 +0000 Joshua Kit Clayton Thanks for tracking down. We’ll look at enforcing a white alpha in a future update.

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