In my game I use automatic texture coordinate generation to draw a wall. Because the wall is on not even ground I just want to create the s coordinate automatically. I did it exactly like the red book told me: glTexGeni(GL_S,GL_TEXTURE_GEN_MODE,GL_OBJECT_LINEAR); const float texGenS1[4]={SOME_CONSTANT,0.0,0.0,0.0}; glTexGenfv(GL_S,GL_OBJECT_PLANE,texGenS1); It works fine on my system (Riva TNT graphics card) but I tried it today on a system with some ATI graphics card and there both coordinates were created automatically or (on the upper part of the wall) my assignments for the t coordinate were completely ignored. Because it''s hard to imagine here are some screenshots My system: http://balour.sourceforge.net/screenshots/shot5.jpg The ATI system: http://balour.sourceforge.net/screenshots/tex_bug.jpg I don''t know what''s wrong with it. Thanx Konstantin Schauwecker

Most likely a driver bug or simply not supported.

Try updating the ATI drivers, or maybe contact ATI (or the cards manufacturer) as to whether it is supported.