What is the fastest way to draw single pixels directly to the screen in an iPhone application?

Question

I am looking the fastest way to draw thousands of individually calculated pixels directly to the screen in an iPhone application that preforms extremely well.

Answer 1

Most probably using OpenGL, something like:

glBegin(GL_POINTS);
glColor3f(...);
glVertex3f(...);
...
glEnd();

Even faster would probably be to use vertex arrays for specifying the points.