How can I save OpenGL draw with OpenGL?

Question

I draw a screen with OpenGL commands. And I must save this screen to .bmp or .png format. But I can\'t do it. I am using glReadpixels but I can\'t do continue. How can I sav

Answer 1

One thing need to be fixed at:

bmih.biXPelsPerMeter = bmih.biYPelsPerMeter = 0;

Otherwise, some picture edit can not open correctly.