Re: AU with OpenGL GUI
Re: AU with OpenGL GUI
- Subject: Re: AU with OpenGL GUI
- From: Shaun Wexler <email@hidden>
- Date: Wed, 24 Nov 2004 10:04:59 -0800
On Nov 24, 2004, at 3:03 AM, David Duncan wrote:
If you want arbitrary sized textures, you should use the
GL_TEXTURE_RECTANGLE_EXT extension. Off the top of my head it is
available on almost all modern GPUs (if it supports Quartz Extreme you
should be good) and it changes your texture coordinates to be n x m
instead of 1x1.
Right; but power-of-2-only textures aren't limited to x==y dimension,
only 2^n: 16x64, 2x512, etc. If it supports Quartz Extreme it most
likely does support rectangle textures, but they are also supported on
non-QE cards, like the PCI Radeon 7000 card. QE just requires AGP (for
the usable bandwidth, otherwise it's clunky if you hack around it to
work with PCI cards too) and at least 32 MB VRAM.
--
Shaun Wexler
MacFOH
http://www.macfoh.com
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