GL_POINTS resize/rotate etc.

drawing GL_POINTS is ok but when i rotate I get some black points. How should I avoid that? I cannot get such logic.
Many thanks

We need more information to help you. Currently, we dont know what you are doing. There can be so many reasons for this some of these which are coming to my mind are

  1. maybe you have texturing enabled (try disabling it glDisable(GL_TEXTURE_2D)) or
  2. maybe you have lighting enabled (try disabling it glDisable(GL_LIGHTING)) or
  3. maybe you are giving wrong params to some function who knows.

Post the relevant code snippet and then we might be able to help.

Basically I do as below. as soon as i move i get black points but not if i comment the 3 lines below.(douuh)

glTranslatef(1123, 813, 0.0f);
glRotatef(Heading, 0.0f , 0.0f, -1.0f);
glTranslatef(-1123, -813, 0.0f);
for( int ly=0; ly< Map_Size; ly++ ){
same for x nested loop
colorize the points
glVertex2f(lx+1059, ly+749);

Many thanks

Why are u assigning blend function each render? Is blending enabled? I think you should first turn blending off and then see if u still get the black points.

No, still no luck commenting blending.
I found this but it doesn’t really help(yes my background is black):