org.lwjgl.egl

Class NVDepthNonlinear

java.lang.Object

org.lwjgl.egl.NVDepthNonlinear

public final class NVDepthNonlinear
extends java.lang.Object

Native bindings to the NV_depth_nonlinear extension.

Due to the perspective divide, conventional integer Z-buffers have a hyperbolic distribution of encodings between the near plane and the far plane. This can result in inaccurate depth testing, particularly when the number of depth buffer bits is small and objects are rendered near the far plane.

Particularly when the number of depth buffer bits is limited (desirable and/or required in low-memory environments), artifacts due to this loss of precision may occur even with relatively modest far plane-to-near plane ratios (e.g., greater than 100:1).

Many attempts have been made to provide alternate encodings for Z-buffer (or alternate formulations for the stored depth) to reduce the artifacts caused by perspective division, such as W-buffers, Z-complement buffers and floating-point 1-Z buffers.

This extension adds a non-linear encoded Z buffer to OpenGL, which can improve the practically useful range of, e.g. 16-bit depth buffers by up to a factor of 16, greatly improving depth test quality in applications where the ratio between the near and far planes can not be as tightly controlled.

Requires EGL 1.1.

Field Summary

Fields

Modifier and Type	Field and Description
static int	EGL_DEPTH_ENCODING_NONE_NV
static int	EGL_DEPTH_ENCODING_NONLINEAR_NV
static int	EGL_DEPTH_ENCODING_NV

Method Summary

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EGL_DEPTH_ENCODING_NV

public static final int EGL_DEPTH_ENCODING_NV

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Constant Field Values

EGL_DEPTH_ENCODING_NONE_NV

public static final int EGL_DEPTH_ENCODING_NONE_NV

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Constant Field Values

EGL_DEPTH_ENCODING_NONLINEAR_NV

public static final int EGL_DEPTH_ENCODING_NONLINEAR_NV

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Constant Field Values