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OpenGL ES 3 Reference Pages

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

 

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.

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, 1] when specified.

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.

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

glGet with argument GL_DEPTH_RANGE

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