Encoding of the depth buffer (not the GBuffer::Field::CS_Z buffer) More...

Public Types
enum	Value { HYPERBOLIC, LINEAR, COMPLEMENTARY }

Public Member Functions
	G3D_DECLARE_ENUM_CLASS_METHODS (DepthEncoding)

Static Public Member Functions
static const char *	toString (int i, Value &v)

Detailed Description

Encoding of the depth buffer (not the GBuffer::Field::CS_Z buffer)

Member Enumeration Documentation

Enumerator:

HYPERBOLIC

Traditional (n)/(f-n) * (1 - f/z) encoding.

Easy to produce from a projection matrix, few good numerical properties.

LINEAR

(z-n)/(f-n), provides uniform precision for fixed point formats like DEPTH24, and easy to reconstruct csZ directly from the depth buffer.

Poor precision under floating-point formats.

Accomplished using a custom vertex shader; not possible with a projection matrix.

COMPLEMENTARY

(n)/(f-n) * (f/z-1) encoding, good for floating-point formats like DEPTH32F.

    Accomplished using glDepthRange(1.0f, 0.0f) with a traditionl
    projection matrix. 

    \par Referenced Code:

G3D::DepthEncoding::G3D_DECLARE_ENUM_CLASS_METHODS ( DepthEncoding )

static const char* G3D::DepthEncoding::toString	(	int	i,
		Value &	v
	)

static

enum G3D::DepthEncoding::Value G3D::DepthEncoding::value