using Multitexturing

[Mickey_dup1]

Hi, I'm trying to enable multitexturing (my video support it!), but on glActive below, my application crash and appear 'report bug error' (i'm under winXP). Why this? Thanks

glEnable(GL_TEXTURE_2D);
printf("active multiTexturing\n");
glActiveTextureARB(GL_TEXTURE0_ARB);
printf("after active multiTexturing\n");
glDisable(GL_TEXTURE_2D);

[CWiC]

Probably you need to activate your function pointer with something like wglGetProcAddress or use one of extention loading library (for example glew).

[Mickey_dup1]

I don't understand how. I'm a newbie. I have incuding <GL/glew.h>...but occur this error at runtime..

[Poons]

you can get the function pointer the following way:

PFNGLACTIVETEXTUREARBPROC glActiveTextureARB;
glActiveTextureARB = (PFNGLACTIVETEXTUREARBPROC) wglGetProcAddress("glActiveTextureARB");

you should check the pointer afterwards if it is null (in that case wglGetProcAddress wasn't successful)

[sqrt[-1]]

If you are using glew, ensure you have initialized it. (eg. called glewInit()? once you have a render context)

[Mickey_dup1]

Originally posted by sqrt[-1]:
If you are using glew, ensure you have initialized it. (eg. called glewInit()? once you have a render context) Thanks it was this. I also make glewInit() but in a wrong place...bye