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Multitexturing Extention Problem

Started by Merlino Oct 6, 2006 at 5:38 PM 4 replies 850+ views

Original Post

Oct 6, 2006 at 5:38 PM

Hi,I am quite new to OpenGL and i am making my first steps through multitexturing. However, it seems like i don't "have" the multitexturing extention... ... my compiler doesn't recongnise the following functions: glActiveTexture(GL_TEXTURE0); //GL_TEXTURE0,1 and so on are not reconised neither... GL_MAX_TEXTURE_UNITS So, how do i make my compiler recognise these functions?? Is there anything i must download?? Thanks in advance, Merlino

Merlino

Author

Merlino

Oct 6, 2006 at 5:42 PM

Also, I have a Sapphire X800GTO2

Lord Faron

Oct 6, 2006 at 6:30 PM

You have multitexturing but you don't have the necessary functions and constants defined. First download glext.h (I don't remember the address; google it). Second use wglGetProcAddress() to get the necessary function addresses. Then you can use the extension you want.

Merlino

Author

Merlino

Oct 6, 2006 at 6:48 PM

Ok, i got the file, but I don't understand how to use the wglGetProcAdress() function...

So, say I want to use the function glActiveTexture(): I write in the winmain.cpp:

PROC adress = wglGetProcAdress("glActiveTextureARB");

And then? What do I do??

I tried to use the function normally but I got an error saying that it was undeclared.

Thanks again

Lord Faron

Oct 7, 2006 at 3:33 AM

If you have glext.h then do something like this:

PFNGLACTIVETEXTUREPROC glActiveTexture = (PFNGLACTIVETEXTUREPROC)wglGetProcAddress("glActiveTexture");

Then you can use glActiveTexture normally. The same goeas for other functions that aren't in standard OGL libs.

Merlino

Author

Merlino

Oct 7, 2006 at 3:37 AM

Thanks, now everything works just fine :D

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