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Re: Extremely confused, GWorlds and CopyBits
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Re: Extremely confused, GWorlds and CopyBits


  • Subject: Re: Extremely confused, GWorlds and CopyBits
  • From: Sailor Quasar <email@hidden>
  • Date: Sun, 11 Jan 2004 12:41:50 -0500

On Sunday, January 11, 2004, at 12:07 PM, Scott Ribe wrote:
It's reasonably obvious that I've got a rowBytes issue or something,
but for the life of me I can not figure out what the heck it is. 24-bit
RGB should yield 3 bytes per pixel, times the width of the image, hence
1024 * 3. Someone please point out to me whatever my glaringly obvious
error is.
I don't remember the specifics (sorry) but I remember when I was doing some
low-level direct messing around with Gworlds and CopyBits that I had a
problem where the description of RGB formats led me to believe they needed 3
bytes/pixel, when in fact they used 4 bytes/pixel. I *think* that was
k24RGBPixelFormat.

And sure enough, the moment I switch it to add the extra byte/pixel, it works like a charm. Thanks. Shouldn't this be documented somewhere?

(I apologize again for the cross-post, but this seems the sort of piece of information that belongs in the archives of both lists.)

-- Sailor Quasar, High Codemaster of the Web, scourge of systems
MacOS is to Windows as Terminus is to Trantor.
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