I have a texture mapped onto a quad. It has an alpha component, it has a texture generated with an alpha component, but it's not blending. I've put these while initializing OpenGL:

 

glEnable(GL_BLEND);

 

and

 

glBlendFunc(GL_SRC_ALPHA,GL_ONE);

 

 

Anyone have any idea why it's not working?

Because you can't copy and paste code out of Nehe's tuts, lawl

 

J/k

 

Did you remember to add this part?

 

if(blend) // Is blend TRUE?

{

glEnable(GL_BLEND); // Turn Blending On

glDisable(GL_DEPTH_TEST); // Turn Depth Testing Off

}

else // Otherwise

{

glDisable(GL_BLEND); // Turn Blending Off

glEnable(GL_DEPTH_TEST); // Turn Depth Testing On

}

I didn't use NeHe's tuts for this one.... :)

 

But that doesn't help. Nothing changes if I disable depth testing...

Well, that's all they do in the tut, http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=08

 

glBlendFunc() then disable/enable depth-testing and blending...

 

Compiles fine for me on linux, not sure what your problem is then :[

Oh, it compiles fine, it just doesn't blend. The alpha section is just plain not blending.

Well, if you're trying to work with Nehe's tut, keep in mind you gotta hit B after launching the app:

 

http://xs73.xs.to/pics/06120/cube.jpg

 

Blending is actually rather simple, gonna mess with it in orthographic project later (probably make some kind of animated fog background, like in a sidescroller)

Nvm... I did something stupid. The image was 65x65, so I used paint to cut it down to 64x64 in a hurry, but paint removed the alpha channel. Oh well :)