Heya ppls, I''ve recently been building a new game, and it''s all looking quite impressive at the moment, HOWEVER, it runs quite slowly, and I am looking for ways to speed it up. Can someone tell me how to remove backfaces ( unseen ones ), that aren''t needed to be drawn to the screen. It''d be much appreciated. Hope some of you guys can help me out here. Thanx in advance ~Cobra~

  // While initializing OpenGL states..glEnable(GL_CULL_FACE);  

and

Frustum culling

What you could do, is use the plane equation to determine which side the camera is on, in relation to the polygon/face. For instance, find the plane equation of the polygon, & then substitute the camera''s position in for x,y & z. If the result is negative, then do this:

glEnable(GL_CULL_FACE) //Enable face culling
glCullFace(GL_FRONT) //Since you are behind the plane, clip the front

if the result is positive, then do this:

glEnable(GL_CULL_FACE) //Enable face culling
glCullFace(GL_BACK) //Since you are infront of the plane, clip the back

if the result is equal to zero, then do this:

glEnable(GL_CULL_FACE) //Enable face culling
glCullFace(GL_FRONT_AND_BACK) //Since you are sitting on the plane, clip the whole polygon.

-- wav

Thanx so much guys..... I never knew it was that simple! hehehe

15 seconds coding, and BAM! it runs smoother already! hehehe


Thanx again guys, I really appreciate it.

~Cobra~