Hi friends.
This simple shader does not work on my ATI HD 3870 but it works on my frined's geforce 6200 (older)
My driver is 9-11_xp32_dd_ccc_wdm_enu.exe and driver date is 04/11/2009
void main() {
if (gl_FragCoord.y>250.0) {
gl_FragColor=vec4(1.0,0.0,1.0,1.0);
} else {
gl_FragColor=gl_Color;
}
}
See pictures here:
http://www.gamedev.net/community/forums/topic.asp?topic_id=554898
Thanks a lot