Blending on none geforce cards ?

OpenGL OpenGL: Basic Coding
1

Hi

I have made a little prog that has a water texture which I have made transparent using GLBLEND. On my geforce it works like a charm but in school the water texture isnt transparent. I dont know what gfx card they have in school but I guess it doenst have a 3d accelarator.

Has anyone else encounterd the same problem ? any solutions ?

Greets
/Jonas

2

As blending works fine in openGL software mode I think there is a miserable GL-driver/GL-card in your school, e.g. ATI. They support only some openGL features (those to get Quake running). The others are badly or not implemented.

Kilam.

3

okey. Thank you.

4

Kilam, you should have said Ati Rage Pro. The newer card Rage 128, Rage 128 pro, MAXX and the Radeon have all the blending mode.

5

Cards with a Riva128 chip (like a Viper330) don’t blend correct too.
try this:

glBlendFunc(GL_ONE, GL_ONE);

this sometimes works better for these cards. It’s not the best blend mode, I know … but hey, what ya gonna do about it?

John

6

glBlendFunc(GL_ONE, GL_ONE);

Hmm okey I am gonna try that.