com.sun.opengl.util.texture

Class TextureData


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.
Authors:
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.

Constructor Summary

TextureData(int internalFormat, int pixelFormat, boolean mipmap, BufferedImage image)
Constructs a new TextureData object with the specified parameters and data contained in the given BufferedImage.
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.
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.

Method Summary

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.

Constructor Details

TextureData

public TextureData(int internalFormat,
                   int pixelFormat,
                   boolean mipmap,
                   BufferedImage image)
Constructs a new TextureData object with the specified parameters and data contained in the given BufferedImage. The resulting TextureData "wraps" the contents of the BufferedImage, so if a modification is made to the BufferedImage between the time the TextureData is constructed and when a Texture is made from the TextureData, that modification will be visible in the resulting Texture.
Parameters:
internalFormat - the OpenGL internal format for the resulting texture; may be 0, in which case it is inferred from the image's type
pixelFormat - the OpenGL internal format for the resulting texture; may be 0, in which case it is inferred from the image's type (note: this argument is currently always ignored)
mipmap - indicates whether mipmaps should be autogenerated (using GLU) for the resulting texture
image - the image containing the texture data

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()

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()

Method Details

flush

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

getAlignment

public int getAlignment()
Returns the required byte alignment for the texture data.

getBorder

public int getBorder()
Returns the border in pixels of the texture data.

getBuffer

public Buffer getBuffer()
Returns the texture data, or null if it is specified as a set of mipmaps.

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.

getHeight

public int getHeight()
Returns the height in pixels 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.

getMipmapData

public Buffer[] getMipmapData()
Returns all mipmap levels for the texture data, or null if it is specified as a single image.

getMustFlipVertically

public boolean getMustFlipVertically()
Indicates whether the texture coordinates must be flipped vertically for proper display.

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.

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.

getWidth

public int getWidth()
Returns the width in pixels of the texture data.

isDataCompressed

public boolean isDataCompressed()
Indicates whether the texture data is in compressed form.

setAlignment

public void setAlignment(int alignment)
Sets the required byte alignment for the texture data.

setBorder

public void setBorder(int border)
Sets the border in pixels of the texture data.

setBuffer

public void setBuffer(Buffer buffer)
Sets the texture data.

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).

setHeight

public void setHeight(int height)
Sets the height in pixels of the texture data.

setInternalFormat

public void setInternalFormat(int internalFormat)
Sets the intended OpenGL internal format of the texture data.

setIsDataCompressed

public void setIsDataCompressed(boolean compressed)
Sets whether the texture data is in compressed form.

setMipmap

public void setMipmap(boolean mipmap)
Sets whether mipmaps should be generated for the texture data.

setMustFlipVertically

public void setMustFlipVertically(boolean mustFlipVertically)
Sets whether the texture coordinates must be flipped vertically for proper display.

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.

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.

setWidth

public void setWidth(int width)
Sets the width in pixels of the texture data.

Copyright 2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.