How to clear portion of screen

[rohit]

Hi ,

I want to clear some specified portion of the screen without affecting rest of the objects on the screen.

Thanks in advance

[kehziah]

By screen I assume you mean the GL drawing surface.

glScissor(x,y,width,height);
glEnable(GL_SCISSOR_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // (or whatever buffer you want to clear)
glDisable(GL_SCISSOR_TEST);