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Re: pixel types in Motion and FCP
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Re: pixel types in Motion and FCP

  • Subject: Re: pixel types in Motion and FCP
  • From: "Micah Sharp" <email@hidden>
  • Date: Thu, 24 Jul 2008 13:43:59 -0700
Thanks Darrin, I should have been more specific.  I was talking about bitmaps only (not textures).  So even with floating point pixels, all bitmaps will always be ARGB (input and output)?  Is that true or no?

I ask because floating bitmaps in FCP are RGBA.

Thanks,


Micah


On Thu, Jul 24, 2008 at 1:29 PM, Darrin Cardani <email@hidden> wrote:

On Jul 24, 2008, at 1:25 PM, Micah Sharp wrote:

As I recall, because of a bug, or maybe on purpose, in Motion (3.0 and greater) ARGB buffers are in-correctly marked with a pixel type of RGBA (kFxPixelFormat_RGBA is really kFxPixelFormat_ARGB).  This isn't a problem in Final Cut that I'm aware of.

Question: Is it possible to EVER actually get RGBA pixels in either Motion or Final Cut?  Is support for RGBA ever necessary?


In Motion, all textures are RGBA, and in software all bitmaps are ARGB. I believe the bug you're referring to occurred before Motion 3.0 on input bitmaps. And I think in 3.0 output bitmaps are still marked as being RGBA, but the app assumes they're ARGB anyway. I'd have to run a test to verify that, but that's how I remember it.

Darrin
--
Darrin Cardani
email@hidden


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  • Follow-Ups:
    • Re: pixel types in Motion and FCP
      • From: Darrin Cardani <email@hidden>
References: 
 >pixel types in Motion and FCP (From: "Micah Sharp" <email@hidden>)
 >Re: pixel types in Motion and FCP (From: Darrin Cardani <email@hidden>)

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