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Re: Speed problems using NSImage. Solution?

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Re: Speed problems using NSImage. Solution?

Subject: Re: Speed problems using NSImage. Solution?
From: John Stiles <email@hidden>
Date: Sun, 07 Jan 2007 17:47:25 -0800

Erik Buck wrote:

NSImage is ultimately implemented on top of OpenGL too.

This is highly misleading. NSImage doesn't use the GPU. It renders into a RAM back-buffer, using exclusively CPU-based algorithms. This RAM back-buffer is later DMAed and blit to the screen by the WindowServer using OpenGL. All of the benefits that one traditionally associates with OpenGL and GPU-based rendering are lost when using NSImage. _______________________________________________

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