Hey, Sorry if this is a really common question but I have searched high and low and not found a solution. I am trying to make an object (ASE loaded and rendered as GL_TRIANGLES) fade out slowly. The object has a texture mapped to it and this is handled properly in a drawModel() function that I use. Here is the code I'm using. Note that frame is always -1 < frame < 51 For all frames up to 49 (or around 49 (I haven't verified this)) the object appears solid, then, suddenly, it disappears. How can I fix this and make it a gradual fade. Note - using SDL Thanks Connell

This doesn't work unfortunately - the object doesn't appear at all (at any time). I have worked out that for some values in glBlendFunc, the alpha value makes no difference, for others, I start with a partially transparent object which fades out, and finally in some the object is completely transparent.

Aarrg!!

I might be missing something here (eminently possible ;) ) but could you not just use 'glColor3f(alpha, alpha, alpha)' ?

That wouldn't work because, you are taking the color and fading it from white to black as alpha goes from 1 to 0. If the texture(I think it is MODULATE) is under a certain type(unclear on which one) the texture is affected by the color that is used. If you had only a black background, this would work, but you probably don't so use GL_BLEND instead as above shown.

for (float i = 1.0; i >= 0.0; i-=0.1){    glColor4f(i, i, i, alpha);    drawStuffHere;}glColor4f(1.0f, 1.0f, 1.0f, alpha); //So everything else's color is normal still.

I have eventually managed to get it working - I realised that I had disabled GL_SMOOTH elsewhere. (At least I think that's what solved it).

Thanks for the help anyway,
Connell