glcreateshader not supported !

**sandyrepope** · 30-10-2007, 21:02

In the thgl pack there are examples under shaders. I keep getting messages like "glcreateshader not supported" and a few others similar to this one.

What does this message mean?

Thanks
Sandy

**matthew** · 30-10-2007, 22:21

It just means that your Graphics card hasn't got the capacity to use Shaders.

When Petr first made the examples I experienced the same problems with my crappy graphics card, lol.

**Petr Schreiber** · 31-10-2007, 11:36

Sandy,

I am sorry it does not work for you, but shaders are really more advanced things. This is reason they are not native in TBGL ( pure TBGL code should run in any PC ).
That sample uses TBGL + OpenGL headers. That means total power, but also this compatibility issues

.

To enjoy shaders, you would have to own card with OpenGL 1.5 at least, if I am correct.
Do you know which card do you have ? If not, you can use script from here.

What are shaders ? They are mini programs, executed/interpreted in driver, which allow you to go around fixed function limitations of API ( OpenGL ). They have very general use - alternative shading ( per pixel lights, toon shading, ... ) and much more.

Feature worth upgrading if you are graphics enthusiatist / lunatic

Bye,
Petr