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Graphics > OpenGL 3D API > Re: Picture wit...
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Re: Picture within a picture effect

by fungus <openglMYSOCKS@[EMAIL PROTECTED] > Aug 23, 2008 at 01:55 PM

On Aug 23, 1:08=A0pm, Wolfgang Draxinger <wdraxin...@[EMAIL PROTECTED]
>
wrote:
>
> > You could render it to a texture and draw quads for each
> > size but the small image would only have GL_NEAREST
> > filtering and would probably look horrible (though full screen
> > antialiasing would help with this).
>
> You can also do GL_LINEAR minification filtering w/o having
> mipmaps. Although aliasing/moire artifacts may appear.
>

If you're shrinking to 1/4 of the size or less like in this example
then GL_LINEAR is no better than GL_NEAREST.


>> Are there any other web sites with lists of cards/extensions?
>
> Not that I'm aware of, but I could start such a database, if
> there's a wide interest.

I've googled around a bit and found this:

http://www.realtech-vr.com/glview/extensions.html

It's not online, you have to download/run a program.
I'm not sure I like the layout and there's no search,
but...


> >http://www.opengl.org/registry/specs/SGIS/generate_mipmap.txt
>
> The extension has been around for some time and even my good old
> GeForce2 can do it.

Yep, according to that program, sup****t is pretty good.


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 4 Posts in Topic:
Picture within a picture effect
Flark <flarkino@[EMAIL  2008-08-22 11:30:03 
Re: Picture within a picture effect
fungus <openglMYSOCKS@  2008-08-22 21:02:20 
Re: Picture within a picture effect
Wolfgang Draxinger <wd  2008-08-23 13:08:16 
Re: Picture within a picture effect
fungus <openglMYSOCKS@  2008-08-23 13:55:57 

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tan12V112 Tue Dec 2 0:06:22 CST 2008.