AtlasTexChunk Class Reference [Atlas Resource System]

#include <atlasTexChunk.h>

Inheritance diagram for AtlasTexChunk:

Detailed Description

Atlas chunk subclass for textures.

This is where the real meat for textures lives; texture chunks may be in a variety of formats, and include several textures worth of opacity map data if they are used in that role.

Public Types

typedef AtlasChunk Parent

FormatJPEG

Use (lossy) JPEG compression.

FormatPNG

Use (lossless) PNG compression.

FormatDDS

Use (fast-to-load, big, lossy) DDS with DXT compression.

enum TexFormat {
  FormatJPEG,
  FormatPNG,
  FormatDDS
}

Public Member Functions

AtlasTexChunk ()

~AtlasTexChunk ()

virtual void read (Stream *s)

Deserialize from a stream.

virtual void write (Stream *s)

Serialize this chunk to a stream.

virtual U32 getHeadSentinel ()

virtual U32 getTailSentinel ()

virtual void process ()

Once the chunk has been loaded (in another thread), this is called in the main thread to prepare any complex resources.

void generate (AtlasChunk *children[4])

Given four children, (re)generate the data for this one.

const bool isBitmapTexFormat (const TexFormat f) const

AtlasTexChunk * generateCopy (S32 reformat=-1)

Static Public Member Functions

static GBitmap * loadDDSIntoGBitmap (const U8 *ddsBuffer, U32 ddsBufferSize)

Public Attributes

TexFormat mFormat

U8 layerCount

If we're storing opacity map data there may be more than one layer worth of image data.

GBitmap * bitmap

DDSFile * dds

Private Member Functions

void writeDDS (Stream *s)

Member Typedef Documentation

typedef AtlasChunk AtlasTexChunk::Parent

Member Enumeration Documentation

enum AtlasTexChunk::TexFormat

Enumerator:

FormatJPEG	Use (lossy) JPEG compression.
FormatPNG	Use (lossless) PNG compression.
FormatDDS	Use (fast-to-load, big, lossy) DDS with DXT compression.

Constructor & Destructor Documentation

AtlasTexChunk::AtlasTexChunk ( )

AtlasTexChunk::~AtlasTexChunk ( )

Member Function Documentation

void AtlasTexChunk::writeDDS ( Stream * s ) [private]

virtual void AtlasTexChunk::read ( Stream * s ) [virtual]

Deserialize from a stream.

See also:: You probably want to use readFromStream()

Reimplemented from AtlasChunk.

virtual void AtlasTexChunk::write ( Stream * s ) [virtual]

Serialize this chunk to a stream.

See also:: You probably want to use prepareDeferredWrite()

Reimplemented from AtlasChunk.

virtual U32 AtlasTexChunk::getHeadSentinel ( ) [virtual]

Reimplemented from AtlasChunk.

virtual U32 AtlasTexChunk::getTailSentinel ( ) [virtual]

Reimplemented from AtlasChunk.

virtual void AtlasTexChunk::process ( ) [virtual]

Once the chunk has been loaded (in another thread), this is called in the main thread to prepare any complex resources.

(For instance, a texture or VB, that depend on access to GFX to initialize.)

Reimplemented from AtlasChunk.

void AtlasTexChunk::generate ( AtlasChunk * children[4] ) [virtual]

Given four children, (re)generate the data for this one.

Their order starts at topleft, clockwise, 0123.

Reimplemented from AtlasChunk.

const bool AtlasTexChunk::isBitmapTexFormat ( const TexFormat f ) const [inline]

AtlasTexChunk* AtlasTexChunk::generateCopy ( S32 reformat = -1 )

static GBitmap* AtlasTexChunk::loadDDSIntoGBitmap	(	const U8 *	ddsBuffer,
		U32	ddsBufferSize
	)			`[static]`

Member Data Documentation

TexFormat AtlasTexChunk::mFormat

U8 AtlasTexChunk::layerCount

If we're storing opacity map data there may be more than one layer worth of image data.

(e.g. we have 10 channels of opacity data and PNG only supports 4 channels/image, so we'd have to have 3 layers).

TOC versions prior than 150 only support a layerCount of 1.

GBitmap* AtlasTexChunk::bitmap

DDSFile* AtlasTexChunk::dds