How to solve this problem?

OpenGL OpenGL: Basic Coding
1

Hi friends, when I was programming, I encountered a problem in rendering, just like this picture:
Water surface mixes with the terrain bringing sawtooth. How can I solve this problem?

2

Push the near clip plane as far out as you can possibly accept. Clicky for more information.

3

Thanks, but after I pushed the near clip plane further, I still found the problem like this :

I set the projection even as:
gluPerspective(45.0f,(GLfloat)m_recOld.right/(GLfloat)m_recOld.bottom,100.0f,5000.0f);
And because of magnification, now the height of the terrain is about 400. The Z of View point is around 430.So where the problem lies?

4

The problem is still the same: limited z-buffer precision.

The best solution is to make sure that the terrain intersects with the water at an angle no less then 20 degrees.

At least it worked for me.

5

What precision depth buffer are you asking for? Are you actually getting it?

If possible, ask for a larger depth buffer on your rendering surface.