glDepthRangef

Name

glDepthRangef — specify mapping of depth values from normalized device coordinates to window coordinates

C Specification

 void glDepthRangef( GLfloat n, GLfloat f);

Parameters

n

Specifies the mapping of the near clipping plane to window coordinates. The initial value is 0.

f

Specifies the mapping of the far clipping plane to window coordinates. The initial value is 1.

Description

After clipping and division by w, depth coordinates range from $-1$ to 1, corresponding to the near and far clipping planes. glDepthRangef specifies a linear mapping of the normalized depth coordinates in this range to window depth coordinates. If a fixed-point depth representation is used, the parameters n and f are clamped to the range [0 to 1] when computing window z.

The setting of (0,1) maps the near plane to 0 and the far plane to 1. With this mapping, the depth buffer range is fully utilized.

Notes

It is not necessary that n be less than f. Reverse mappings such as $n = 1$, and $f = 0$ are acceptable.

Associated Gets

glGet with argument GL_DEPTH_RANGE

API Version Support

OpenGL ES API Version
Function Name 2.0 3.0 3.1
glDepthRangef