Re: [PyOpenGL-Users] glTexImage2d size

[JoN <jo...@we...>]

Hi guys,

AFAIK the ability to support non-power-of-2 (NPO2 or NPOT) textures is a
card-specific thing, and hence their OpenGL driver thing.

I _think_ NPO2 texture support is supposed to be a standard feature of Op=
enGL
2.X, but I don't think all cards support it.

Jon


Quoting Matt Bailey <ma...@rt...>:

> Oh, cool, I didn't know about that function, might have to check that o=
ut. In
>=20
> my current game I'm just making them all a power of 2, which works well=
=20
> enough for most things (I like having the extra space to work with in t=
he=20
> image just in case I or someone else chooses to edit the look of things=
 a bit
>=20
> later on), but to save disk space/memory I re-sized my player's weapon =
images
>=20
> some to make them a power of 2, and then expand the OpenGL surface out =
to the
>=20
> aspect ratio of the "correct" original gun image....since I'm downsizin=
g the
>=20
> image in one dimension, I lose some detail.
>=20
> 	-Matt Bailey
>=20
> On Monday 13 November 2006 14:26, Andrew Wilson set 1,000 monkies in fr=
ont of
>=20
> keyboards and the following appeared:
> > Hello,
> >   You are correct, I would like to use textures that are not of power=
 2 in
> > dimension.  I have an Nvidia Quadro FX 3450 that mysteriously support=
s it.
> > I seem to have found a work around using the gluBuild2DMipmaps call, =
the
> > appear to automatically pad the image correctly.  I guess I should re=
ad
> the
> > documentation a little closer!
> >   Thanks
> >   Andrew
> >
> > On 11/13/06, Matt Bailey <ma...@rt...> wrote:
> > > Hrrrmmm, OpenGL textures should always have dimensions that are a p=
ower
> > > of 2.
> > > Are you saying you want to use images that do not conform to this? =
This
> > > normally is not possible, I don't know of a way around it. If that'=
s
> what
> > > you're trying to do, I'm surprised it works on any video card at al=
l.
> > >
> > >         -Matt Bailey
>=20
>=20
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>=20




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