Re: [isugamedev-devel] changing colors of textures

[Justin H. <ja...@vr...>]

Actually, if you set the polygon's color using glColor3f(...) you can
significantly change the texture's color at runtime.

What you could do is make one set of textures in grayscale, then use the
glColor3f(...) calls to set the color it appears when rendered.

For instance, if you had a white light, you can make the textured polygon
appear blue with the grayscale texture by doing
glColor3f( 0.0, 0.0, 1.0, 1.0 );

Is that what you're trying to do?

I'm thinking that if you have a green-ish texture to start off and do the
same thing, you'll end up with a turquoise texture if you glColor it to
blue. But if you use the grayscale textures, you'll have full control of
the color shade they have when rendered.


justin

-----------------------------------------
Justin Hare  <ja...@vr...>
Virtual Reality Applications Center
Iowa State University, Howe Hall
http://www.vrac.iastate.edu
-----------------------------------------

On Wed, 10 Apr 2002, Josh Brown wrote:

> Date: Wed, 10 Apr 2002 15:23:35 -0500
> From: Josh Brown <br...@vr...>
> To: game dev club developers <isu...@li...>
> Subject: [isugamedev-devel] changing colors of textures
>
>
> I am working on a simple game that is texturing polygons using mipmapping.
> I have 4 textures drawn they all use 1 color, I need a copy of those
> textures in a different color.  Is there a way to make openGL draw the
> texture using a different color?  Is there a flag that when I call
> glColor3f(...) sets the color of a texture map.  Or am I going to have to
> settle for making a new set of the textures in the different color and
> applying those instead of originals?
>
> Thanks
> Josh
>
>
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