Loading the OpenGL package (was: Games with Squeak)

Joshua Gargus schwa at fastmail.us
Tue Nov 14 22:42:57 UTC 2006

On Nov 14, 2006, at 2:40 PM, Mikael Kindborg wrote:

> On 11/14/06, Joshua Gargus <schwa at fastmail.us> wrote:
>> > Are textures faster?
>> > Will have to learn more about this.
>> Texture-mapped quads are the way to go.
> Looked at glTexImage2D and the documentation says that width and
> height must be powers of two, which is not very nice for sprites.
> However, I saw that in OpenGL 2.1 "Non-Power-Of-Two Textures" are
> introduced as a standard:
> http://www.opengl.org/documentation/current_version/

If you are willing to waste some memory, you can always set up your  
texture coordinates to only include the region of the power-of-two  
texture that has sprite data.  Or, as you say, use NPOT textures.   
Although they're only now becoming part of the standard, they are  
usable via extensions of a wide range of hardware.


> Regards, Micke

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