com.sun.opengl.util.texture
Class TextureData

java.lang.Object
  com.sun.opengl.util.texture.TextureData

Direct Known Subclasses:

AWTTextureData

public class TextureData
extends Object

Represents the data for an OpenGL texture. This is separated from the notion of a Texture to support things like streaming in of textures in a background thread without requiring an OpenGL context to be current on that thread.

Author:

Chris Campbell, Kenneth Russell

Nested Class Summary

static interface

TextureData.Flusher Defines a callback mechanism to allow the user to explicitly deallocate native resources (memory-mapped files, etc.) associated with a particular TextureData.

Field Summary

protected int	alignment
protected Buffer	buffer
protected int	estimatedMemorySize
protected boolean	haveEXTABGR
protected boolean	haveGL12
protected int	height
protected int	internalFormat
protected boolean	mipmap
protected boolean	mustFlipVertically
protected int	pixelFormat
protected int	pixelType
protected int	rowLength
protected int	width

Constructor Summary

protected	TextureData() Used only by subclasses
	TextureData(int internalFormat, int width, int height, int border, int pixelFormat, int pixelType, boolean mipmap, boolean dataIsCompressed, boolean mustFlipVertically, Buffer buffer, TextureData.Flusher flusher) Constructs a new TextureData object with the specified parameters and data contained in the given Buffer.
	TextureData(int internalFormat, int width, int height, int border, int pixelFormat, int pixelType, boolean dataIsCompressed, boolean mustFlipVertically, Buffer[] mipmapData, TextureData.Flusher flusher) Constructs a new TextureData object with the specified parameters and data for multiple mipmap levels contained in the given array of Buffers.

Method Summary

void	destroy() Calls flush()
protected static int	estimatedMemorySize(Buffer buffer)
void	flush() Flushes resources associated with this TextureData by calling Flusher.flush().
int	getAlignment() Returns the required byte alignment for the texture data.
int	getBorder() Returns the border in pixels of the texture data.
Buffer	getBuffer() Returns the texture data, or null if it is specified as a set of mipmaps.
int	getEstimatedMemorySize() Returns an estimate of the amount of memory in bytes this TextureData will consume once uploaded to the graphics card.
int	getHeight() Returns the height in pixels of the texture data.
int	getInternalFormat() Returns the intended OpenGL internal format of the texture data.
boolean	getMipmap() Returns whether mipmaps should be generated for the texture data.
Buffer[]	getMipmapData() Returns all mipmap levels for the texture data, or null if it is specified as a single image.
boolean	getMustFlipVertically() Indicates whether the texture coordinates must be flipped vertically for proper display.
int	getPixelFormat() Returns the intended OpenGL pixel format of the texture data.
int	getPixelType() Returns the intended OpenGL pixel type of the texture data.
int	getRowLength() Returns the row length needed for correct GL_UNPACK_ROW_LENGTH specification.
int	getWidth() Returns the width in pixels of the texture data.
boolean	isDataCompressed() Indicates whether the texture data is in compressed form.
void	setAlignment(int alignment) Sets the required byte alignment for the texture data.
void	setBorder(int border) Sets the border in pixels of the texture data.
void	setBuffer(Buffer buffer) Sets the texture data.
void	setHaveEXTABGR(boolean haveEXTABGR) Indicates to this TextureData whether the GL_EXT_abgr extension is available.
void	setHaveGL12(boolean haveGL12) Indicates to this TextureData whether OpenGL version 1.2 is available.
void	setHeight(int height) Sets the height in pixels of the texture data.
void	setInternalFormat(int internalFormat) Sets the intended OpenGL internal format of the texture data.
void	setIsDataCompressed(boolean compressed) Sets whether the texture data is in compressed form.
void	setMipmap(boolean mipmap) Sets whether mipmaps should be generated for the texture data.
void	setMustFlipVertically(boolean mustFlipVertically) Sets whether the texture coordinates must be flipped vertically for proper display.
void	setPixelFormat(int pixelFormat) Sets the intended OpenGL pixel format of the texture data.
void	setPixelType(int pixelType) Sets the intended OpenGL pixel type of the texture data.
void	setRowLength(int rowLength) Sets the row length needed for correct GL_UNPACK_ROW_LENGTH specification.
void	setWidth(int width) Sets the width in pixels of the texture data.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

width

protected int width

height

protected int height

pixelFormat

protected int pixelFormat

pixelType

protected int pixelType

internalFormat

protected int internalFormat

mipmap

protected boolean mipmap

mustFlipVertically

protected boolean mustFlipVertically

buffer

protected Buffer buffer

rowLength

protected int rowLength

alignment

protected int alignment

estimatedMemorySize

protected int estimatedMemorySize

haveEXTABGR

protected boolean haveEXTABGR

haveGL12

protected boolean haveGL12

Constructor Detail

TextureData

public TextureData(int internalFormat,
                   int width,
                   int height,
                   int border,
                   int pixelFormat,
                   int pixelType,
                   boolean mipmap,
                   boolean dataIsCompressed,
                   boolean mustFlipVertically,
                   Buffer buffer,
                   TextureData.Flusher flusher)
            throws IllegalArgumentException

Constructs a new TextureData object with the specified parameters and data contained in the given Buffer. The optional Flusher can be used to clean up native resources associated with this TextureData when processing is complete; for example, closing of memory-mapped files that might otherwise require a garbage collection to reclaim and close.

Parameters:

internalFormat - the OpenGL internal format for the resulting texture; must be specified, may not be 0

width - the width in pixels of the texture

height - the height in pixels of the texture

border - the number of pixels of border this texture data has (0 or 1)

pixelFormat - the OpenGL pixel format for the resulting texture; must be specified, may not be 0

pixelType - the OpenGL type of the pixels of the texture

mipmap - indicates whether mipmaps should be autogenerated (using GLU) for the resulting texture. Currently if mipmap is true then dataIsCompressed may not be true.

dataIsCompressed - indicates whether the texture data is in compressed form (e.g. GL_COMPRESSED_RGB_S3TC_DXT1_EXT)

mustFlipVertically - indicates whether the texture coordinates must be flipped vertically in order to properly display the texture

buffer - the buffer containing the texture data

flusher - optional flusher to perform cleanup tasks upon call to flush()

Throws:

IllegalArgumentException - if any parameters of the texture data were invalid, such as requesting mipmap generation for a compressed texture

TextureData

public TextureData(int internalFormat,
                   int width,
                   int height,
                   int border,
                   int pixelFormat,
                   int pixelType,
                   boolean dataIsCompressed,
                   boolean mustFlipVertically,
                   Buffer[] mipmapData,
                   TextureData.Flusher flusher)
            throws IllegalArgumentException

Constructs a new TextureData object with the specified parameters and data for multiple mipmap levels contained in the given array of Buffers. The optional Flusher can be used to clean up native resources associated with this TextureData when processing is complete; for example, closing of memory-mapped files that might otherwise require a garbage collection to reclaim and close.

Parameters:

internalFormat - the OpenGL internal format for the resulting texture; must be specified, may not be 0

width - the width in pixels of the topmost mipmap level of the texture

height - the height in pixels of the topmost mipmap level of the texture

border - the number of pixels of border this texture data has (0 or 1)

pixelFormat - the OpenGL pixel format for the resulting texture; must be specified, may not be 0

pixelType - the OpenGL type of the pixels of the texture

dataIsCompressed - indicates whether the texture data is in compressed form (e.g. GL_COMPRESSED_RGB_S3TC_DXT1_EXT)

mustFlipVertically - indicates whether the texture coordinates must be flipped vertically in order to properly display the texture

mipmapData - the buffers containing all mipmap levels of the texture's data

flusher - optional flusher to perform cleanup tasks upon call to flush()

Throws:

IllegalArgumentException - if any parameters of the texture data were invalid, such as requesting mipmap generation for a compressed texture

TextureData

protected TextureData()

Used only by subclasses

Method Detail

getWidth

public int getWidth()

Returns the width in pixels of the texture data.

getHeight

public int getHeight()

Returns the height in pixels of the texture data.

getBorder

public int getBorder()

Returns the border in pixels of the texture data.

getPixelFormat

public int getPixelFormat()

Returns the intended OpenGL pixel format of the texture data.

getPixelType

public int getPixelType()

Returns the intended OpenGL pixel type of the texture data.

getInternalFormat

public int getInternalFormat()

Returns the intended OpenGL internal format of the texture data.

getMipmap

public boolean getMipmap()

Returns whether mipmaps should be generated for the texture data.

isDataCompressed

public boolean isDataCompressed()

Indicates whether the texture data is in compressed form.

getMustFlipVertically

public boolean getMustFlipVertically()

Indicates whether the texture coordinates must be flipped vertically for proper display.

getBuffer

public Buffer getBuffer()

Returns the texture data, or null if it is specified as a set of mipmaps.

getMipmapData

public Buffer[] getMipmapData()

Returns all mipmap levels for the texture data, or null if it is specified as a single image.

getAlignment

public int getAlignment()

Returns the required byte alignment for the texture data.

getRowLength

public int getRowLength()

Returns the row length needed for correct GL_UNPACK_ROW_LENGTH specification. This is currently only supported for non-mipmapped, non-compressed textures.

setWidth

public void setWidth(int width)

Sets the width in pixels of the texture data.

setHeight

public void setHeight(int height)

Sets the height in pixels of the texture data.

setBorder

public void setBorder(int border)

Sets the border in pixels of the texture data.

setPixelFormat

public void setPixelFormat(int pixelFormat)

Sets the intended OpenGL pixel format of the texture data.

setPixelType

public void setPixelType(int pixelType)

Sets the intended OpenGL pixel type of the texture data.

setInternalFormat

public void setInternalFormat(int internalFormat)

Sets the intended OpenGL internal format of the texture data.

setMipmap

public void setMipmap(boolean mipmap)

Sets whether mipmaps should be generated for the texture data.

setIsDataCompressed

public void setIsDataCompressed(boolean compressed)

Sets whether the texture data is in compressed form.

setMustFlipVertically

public void setMustFlipVertically(boolean mustFlipVertically)

Sets whether the texture coordinates must be flipped vertically for proper display.

setBuffer

public void setBuffer(Buffer buffer)

Sets the texture data.

setAlignment

public void setAlignment(int alignment)

Sets the required byte alignment for the texture data.

setRowLength

public void setRowLength(int rowLength)

Sets the row length needed for correct GL_UNPACK_ROW_LENGTH specification. This is currently only supported for non-mipmapped, non-compressed textures.

setHaveEXTABGR

public void setHaveEXTABGR(boolean haveEXTABGR)

Indicates to this TextureData whether the GL_EXT_abgr extension is available. Used for optimization along some code paths to avoid data copies.

setHaveGL12

public void setHaveGL12(boolean haveGL12)

Indicates to this TextureData whether OpenGL version 1.2 is available. If not, falls back to relatively inefficient code paths for several input data types (several kinds of packed pixel formats, in particular).

getEstimatedMemorySize

public int getEstimatedMemorySize()

Returns an estimate of the amount of memory in bytes this TextureData will consume once uploaded to the graphics card. It should only be treated as an estimate; most applications should not need to query this but instead let the OpenGL implementation page textures in and out as necessary.

flush

public void flush()

Flushes resources associated with this TextureData by calling Flusher.flush().

destroy

public void destroy()

Calls flush()

See Also:

flush()

toString

public String toString()

Overrides:

toString in class Object

estimatedMemorySize

protected static int estimatedMemorySize(Buffer buffer)