Dynamic near and far clipping?

[blue_tomato]

I need to dynamically adjust the near and far z clipping values while my game is running, but how?

I am calling gluPerspective  and glFrustum, but only the first initial call seems to have any effect?

[djork]

You are probably in the modelview (i.e. rendering) matrix when you call those functions.  You need to go back into the projection matrix to re-adjust the viewport.

GL11.glMatrixMode(GL11.GL_PROJECTION);
GL11.glLoadIdentity();

// reset your view here

GL11.glMatrixMode(GL11.GL_MODELVIEW);
GL11.glLoadIdentity();

// back to rendering!

[blue_tomato]

You are probably in the modelview (i.e. rendering) matrix when you call those functions.  You need to go back into the projection matrix to re-adjust the viewport.

GL11.glMatrixMode(GL11.GL_PROJECTION);
GL11.glLoadIdentity();

// reset your view here

GL11.glMatrixMode(GL11.GL_MODELVIEW);
GL11.glLoadIdentity();

// back to rendering!

Thanks a lot