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Re: About Painter vs OpenGL [message #31473 is a reply to message #31469]

Fri, 04 March 2011 22:15

mirek is currently offline

mirek
Messages: 13976
Registered: November 2005

Ultimate Member

Novo wrote on Fri, 04 March 2011 13:52

mirek wrote on Fri, 04 March 2011 11:56

Novo wrote on Fri, 04 March 2011 11:31

Quote:

The 2D line and font drawing features of Quartz are not accelerated by Quartz Extreme.

People actually do that. For example: OpenGL accelerated Flash Player.

These guys draw 2D lines and fonts using OpenGL. Actually, they do all 2D UI using OpenGL.

Well good for them. However, it is impossible to achieve "svg/pdf" quality of rendering using OpenGL. That is all.

Also, I doubt they are really doing text rendering using OpenGL polygons.

What is so special about "svg/pdf" quality of rendering?

E.g. you often want to achieve subpixel accuracy...

Quote:

And I know for sure they are using OpenGL to render text. Small size text is rendered from bitmaps.

Which is exactly the point...

In Painter (and I believe Quartz and other similiar systems too), even regular text is rendered as curves. That has one nice advantage that you can use the text to define path.

You can only afford that with subpixel accuracy.

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[Message index]

		About Painter vs OpenGL By: mirek on Fri, 04 March 2011 10:29
		Re: About Painter vs OpenGL By: Novo on Fri, 04 March 2011 17:31
		Re: About Painter vs OpenGL By: mirek on Fri, 04 March 2011 17:56
		Re: About Painter vs OpenGL By: Novo on Fri, 04 March 2011 19:52
		Re: About Painter vs OpenGL By: mirek on Fri, 04 March 2011 22:15
		Re: About Painter vs OpenGL By: raxvan on Sat, 05 March 2011 13:38
		Re: About Painter vs OpenGL By: mirek on Sat, 05 March 2011 14:52
		Re: About Painter vs OpenGL By: raxvan on Sat, 05 March 2011 15:01
		Re: About Painter vs OpenGL By: Mindtraveller on Sat, 05 March 2011 15:30
		Re: About Painter vs OpenGL By: mirek on Sat, 05 March 2011 18:26
		Re: About Painter vs OpenGL By: raxvan on Sat, 05 March 2011 17:45
		Re: About Painter vs OpenGL By: mirek on Sat, 05 March 2011 18:29
		Re: About Painter vs OpenGL By: raxvan on Sun, 06 March 2011 08:44
		Re: About Painter vs OpenGL By: Tom1 on Sun, 06 March 2011 22:10
		Re: About Painter vs OpenGL By: mirek on Sun, 06 March 2011 22:57
		Re: About Painter vs OpenGL By: Tom1 on Mon, 07 March 2011 11:16
		Re: About Painter vs OpenGL By: raxvan on Mon, 07 March 2011 13:10

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