I have one problem. Opengl Light or Color Doesnt work. fx 5200 run normal: Normal But fx 5500 doesnt work: Not Normal what is the problem. edit: Project: Download code //light float d1light[]={ 0.7f, 0.7f, 0.7f, 1.0f }; float a1light[]= { 0.2f, 0.2f, 0.2f, 1.0f }; float s1light[] = {0.5f, 0.5f, 0.5f, 1.0f}; float p1light[] = { 100.0f, 100.0f, 100.0f,0.0 }; float dir1light[]= { 0.0f, -1.0f,0.0f, 1.0f }; float d2light[]={ 0.5f, 0.0f, 0.0f, 1.0f }; float p2light[] = { 0.0f, 15.0f, 15.0f, 0.0 }; float d3light[]={ 0.5f, 0.5f, 0.0f, 1.0f }; float p3light[] = { 15.0f, 15.0f, 0.0f, 0.0 }; void XXX:setLight() { glLightfv(GL_LIGHT0, GL_AMBIENT, a1light); glLightfv(GL_LIGHT0, GL_DIFFUSE, d1light); glLightfv(GL_LIGHT0, GL_POSITION,p1light); glLightfv(GL_LIGHT0, GL_SPECULAR,s1light); glLightfv(GL_LIGHT0,GL_SPOT_DIRECTION,dir1light); glLightf(GL_LIGHT0,GL_SPOT_EXPONENT,70.0); glLightf(GL_LIGHT0,GL_SPOT_CUTOFF,180.0); glLightf(GL_LIGHT0,GL_CONSTANT_ATTENUATION,1.0); glLightf(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, 0.0); glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0.0); glEnable(GL_LIGHT0); glLightfv(GL_LIGHT1, GL_DIFFUSE, d2light); glLightfv(GL_LIGHT1, GL_POSITION,p2light); glEnable(GL_LIGHT1); glLightfv(GL_LIGHT2, GL_DIFFUSE, d3light); glLightfv(GL_LIGHT2 ,GL_POSITION,p3light); glEnable(GL_LIGHT2); glEnable(GL_LIGHTING); } //material float d1mat[]={ 1.0f, 1.0f, 1.0f, 1.0f }; float a1mat[]={ 0.9f, 0.9f, 0.9f, 1.0f }; float s1mat[]={ 0.0f, 0.0f, 0.0f, 1.0f }; float e1mat[]={ 0.0f, 0.0f, 0.0f, 1.0f }; float shi1[] = { 0 }; void XXX:setHaritaMaterial() { glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE ); glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, a1mat); glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, d1mat); glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, s1mat); glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, shi1); glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, e1mat); glEnable(GL_COLOR_MATERIAL); } [Edited by - chenmy1 on May 22, 2006 7:59:42 AM]

OK, it looks as though its your lighting (rather than colour) it could be something to do with your attenuation settings, its a bit difficult to tell from the pictures it could be one of several things. Could you post you lighting code?

Luke.

P.S.

Linkified for the lazy:

Normal
Not Normal

ok. fixed :D

glDisable(GL_COLOR_MATERIAL);

only material , no color material:

No Color Material

[Edited by - chenmy1 on May 22, 2006 3:44:13 PM]