G3D::DepthEncoding Class Reference

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

Public Types
enum	Value {   HYPERBOLIC,   LINEAR,   COMPLEMENTARY }

Public Member Functions
	DepthEncoding (const G3D::String &x)
	DepthEncoding (char v)
	DepthEncoding (int v)
	DepthEncoding (const G3D::Any &a)
	DepthEncoding ()
	DepthEncoding (const Value v)
void	deserialize (G3D::BinaryInput &b)
unsigned int	hashCode () const
	operator int () const
bool	operator!= (const DepthEncoding ::Value other) const
bool	operator!= (const DepthEncoding other) const
DepthEncoding	operator+ (const int x) const
DepthEncoding &	operator++ ()
DepthEncoding &	operator+= (const int x)
DepthEncoding	operator- (const int x) const
DepthEncoding &	operator-- ()
DepthEncoding &	operator-= (const int x)
bool	operator< (const DepthEncoding other) const
bool	operator< (const Value other) const
bool	operator<= (const Value other) const
bool	operator<= (const DepthEncoding other) const
DepthEncoding &	operator= (const G3D::Any &a)
bool	operator== (const DepthEncoding ::Value other) const
bool	operator== (const DepthEncoding other) const
bool	operator> (const DepthEncoding other) const
bool	operator> (const Value other) const
bool	operator>= (const DepthEncoding other) const
bool	operator>= (const Value other) const
void	serialize (G3D::BinaryOutput &b) const
G3D::Any	toAny () const
const char *	toString () const

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

Public Attributes
enum G3D::DepthEncoding::Value	value

Detailed Description

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

Member Enumeration Documentation

Value

enum G3D::DepthEncoding::Value

Enumerator
HYPERBOLIC	"Z-buffer" Traditional (n)/(f-n) * (1 - f/z) encoding. Easy to produce from a projection matrix, few good numerical properties.
LINEAR	"W-buffer" (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 at the expense of complicated interpolation in the fragment shader and losing hierarchical and early-z culling; not possible with a projection matrix. This is provided for future compatibility with potential OpenGL extensions and for software renderers. There is no way to make G3D render a LINEAR depth buffer currently.
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. Referenced Code: http://portal.acm.org/citation.cfm?id=311579&dl=ACM&coll=DL&CFID=28183902&CFTOKEN=63987370

Constructor & Destructor Documentation

DepthEncoding() [1/6]

G3D::DepthEncoding::DepthEncoding ( const G3D::String &  x )

inlineexplicit

DepthEncoding() [2/6]

G3D::DepthEncoding::DepthEncoding ( const G3D::Any &  a )

inlineexplicit

DepthEncoding() [3/6]

G3D::DepthEncoding::DepthEncoding ( char  v )

inlineexplicit

DepthEncoding() [4/6]

G3D::DepthEncoding::DepthEncoding ( )

inline

DepthEncoding() [5/6]

G3D::DepthEncoding::DepthEncoding ( const Value  v )

inline

DepthEncoding() [6/6]

G3D::DepthEncoding::DepthEncoding ( int  v )

inlineexplicit

Member Function Documentation

classname()

static const char* G3D::DepthEncoding::classname ( )

inlinestatic

count()

static int G3D::DepthEncoding::count ( )

inlinestatic

deserialize()

void G3D::DepthEncoding::deserialize ( G3D::BinaryInput &  b )

inline

hashCode()

unsigned int G3D::DepthEncoding::hashCode ( ) const

inline

Referenced by G3D::GBuffer::Specification::hashCode().

nthValue()

static Value G3D::DepthEncoding::nthValue ( int  n )

inlinestatic

operator int()

G3D::DepthEncoding::operator int ( ) const

inline

operator!=() [1/2]

bool G3D::DepthEncoding::operator!= ( const DepthEncoding  other ) const

inline

operator!=() [2/2]

bool G3D::DepthEncoding::operator!= ( const DepthEncoding ::Value  other ) const

inline

operator+()

DepthEncoding G3D::DepthEncoding::operator+ ( const int  x ) const

inline

operator++()

DepthEncoding& G3D::DepthEncoding::operator++ ( )

inline

operator+=()

DepthEncoding& G3D::DepthEncoding::operator+= ( const int  x )

inline

operator-()

DepthEncoding G3D::DepthEncoding::operator- ( const int  x ) const

inline

operator--()

DepthEncoding& G3D::DepthEncoding::operator-- ( )

inline

operator-=()

DepthEncoding& G3D::DepthEncoding::operator-= ( const int  x )

inline

operator<() [1/2]

bool G3D::DepthEncoding::operator< ( const Value  other ) const

inline

operator<() [2/2]

bool G3D::DepthEncoding::operator< ( const DepthEncoding  other ) const

inline

operator<=() [1/2]

bool G3D::DepthEncoding::operator<= ( const DepthEncoding  other ) const

inline

operator<=() [2/2]

bool G3D::DepthEncoding::operator<= ( const Value  other ) const

inline

operator=()

DepthEncoding& G3D::DepthEncoding::operator= ( const G3D::Any &  a )

inline

operator==() [1/2]

bool G3D::DepthEncoding::operator== ( const DepthEncoding ::Value  other ) const

inline

operator==() [2/2]

bool G3D::DepthEncoding::operator== ( const DepthEncoding  other ) const

inline

operator>() [1/2]

bool G3D::DepthEncoding::operator> ( const DepthEncoding  other ) const

inline

operator>() [2/2]

bool G3D::DepthEncoding::operator> ( const Value  other ) const

inline

operator>=() [1/2]

bool G3D::DepthEncoding::operator>= ( const DepthEncoding  other ) const

inline

operator>=() [2/2]

bool G3D::DepthEncoding::operator>= ( const Value  other ) const

inline

serialize()

void G3D::DepthEncoding::serialize ( G3D::BinaryOutput &  b ) const

inline

toAny()

G3D::Any G3D::DepthEncoding::toAny ( ) const

inline

toString() [1/2]

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

static

toString() [2/2]

const char* G3D::DepthEncoding::toString ( ) const

inline

Member Data Documentation

value

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