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Re: Annoying CGDisplayCapture Fades?

If I was in your shoes, I would create a 1024x512 OpenGL texture. You can
even make an 8 bit texture with a CLUT if you want, but I recommend a 32 bit
texture. Draw your game in the lower left 640x480 of the texture. Use
OpenGL to update the texture. This works fine for full screen 640x480 and
will work happily in a window with a 640x480 content rect. Use texture
coordinates to map the lower left 640x480 to a 640x480 quad drawn with an
identity ortho matrix.

The OpenGL drivers will make sure bus is used efficiently. Drawing into the
32 bit texture is just a matter of translating colors through your existing
CLUT or you can use an 8 bit texture but it will actually be slower I
suspect.

We ported a 16 bit 2D game using this technique and it was the fastest
technique in both performance and development time that we have found. This
should work fine even on early iMacs. We do not see flickering or other
problems when switching to full screen OpenGL and back.
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References: 
 >Re: Annoying CGDisplayCapture Fades? (From: Zack Morris <email@hidden>)



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