Didn't know where to put this but anyways... I want to load a texture, say a ball and the area around the ball should be transparent. I make an image in Photoshop with transparent background and save it as a 32 bit TGA. Now i load it in my OpenGL program and it has always worked wonders. Yesterday i was going to do this again in some project but i can't for the world get it to work. I have tried using the Simple OpenGL Image Library (SOIL) but can't get it to work. I also tried GLFWs (the window lib thingie im using) own Tex loading function but can't get it to work either. The only thing different from last time when i got it to work is that i was using SDL. I figure GLFWs the problem, but how? I open the window with alpha blending and stuff enabled but it just doesn't want to work. Any help on this would be very much appreciated. Thanks.

Do you mean like enabling Blending in OpenGL and then using something like
glColor4f(r, g, b, a); ?

EDIT: Oh nevermind, thanks for your help ^^

Hmm.. I can't get this to work.

I make a picture and set the background color to (254, 254, 254) and then draw something and save it as a jpeg (does filetype matter in this case?).

I load it in my program and:

glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, tex);
glColor3ub(254, 254, 254);

//I tried 4ub with 255 and 0 as the alpha channel with no luck.

glBegin(GL_QUADS);
...
glEnd();

glDisable(GL_TEXTURE_2D);

Now... what am i doing wrong? I have tried changing the blendfunc but i still can't get it to work.