[Paracomp-spec] [Fwd: Re: RFC : Extension EXT_datatype_float - floating point datatypes for composi
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From: Balázs T. <tb...@gm...> - 2008-07-09 09:18:41
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----- Forwarded message from =?ISO-8859-1?Q?Cs=E9bfalvi_Bal=E1zs_ <cs...@ii...>, ?= ----- From: Csébfalvi Balázs <cs...@ii...> Date: Mon, 7 Jul 2008 16:54:46 +0200 Subject: RE: [Fwd: Re: [Paracomp-spec] RFC : Extension EXT_datatype_float - floating point datatypes for compositing] Hi Shree, I think using 16 bits for just the W component would be appropriate especially for applications requiring front-to-back compositing, but the lack of precision in the color channels would still lead to some accumulated error. The integer format might also be advantageous if the compositing operator is not necessarily the classical alpha-blending. For example, there are applications, where only the geometrical primitives projected onto a given pixel have to be counted, or the unique integer ID of the closest primitive has to be obtained in the given pixel in order to reference it in a subsequent pass. Regards, Balazs ----- End forwarded message ----- |