org.lwjgl.stb

Class STBDXT

java.lang.Object

org.lwjgl.stb.STBDXT

public class STBDXT
extends java.lang.Object

Native bindings to stb_dxt.h from the stb library.

DXT1/DXT5 compressor.

Field Summary

Fields

Modifier and Type	Field and Description
static int	STB_DXT_DITHER Use dithering.
static int	STB_DXT_HIGHQUAL High quality mode, does two refinement steps instead of 1.
static int	STB_DXT_NORMAL

Method Summary

Modifier and Type	Method and Description
static void	nstb_compress_bc4_block(long dest, long src_r_one_byte_per_pixel) Unsafe version of: compress_bc4_block
static void	nstb_compress_bc5_block(long dest, long src_rg_two_byte_per_pixel) Unsafe version of: compress_bc5_block
static void	nstb_compress_dxt_block(long dest, long src_rgba_four_bytes_per_pixel, int alpha, int mode) Unsafe version of: compress_dxt_block
static void	stb_compress_bc4_block(java.nio.ByteBuffer dest, java.nio.ByteBuffer src_r_one_byte_per_pixel) Call this function for every block (you must pad).
static void	stb_compress_bc5_block(java.nio.ByteBuffer dest, java.nio.ByteBuffer src_rg_two_byte_per_pixel) Call this function for every block (you must pad).
static void	stb_compress_dxt_block(java.nio.ByteBuffer dest, java.nio.ByteBuffer src_rgba_four_bytes_per_pixel, boolean alpha, int mode) Call this function for every block (you must pad).

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

STB_DXT_NORMAL

public static final int STB_DXT_NORMAL

See Also:

Constant Field Values

STB_DXT_DITHER

public static final int STB_DXT_DITHER

Use dithering. Dubious win, never use for normal maps and the like!

See Also:

Constant Field Values

STB_DXT_HIGHQUAL

public static final int STB_DXT_HIGHQUAL

High quality mode, does two refinement steps instead of 1. ~30-40% slower.

See Also:

Constant Field Values

Method Detail

nstb_compress_dxt_block

public static void nstb_compress_dxt_block(long dest,
                                           long src_rgba_four_bytes_per_pixel,
                                           int alpha,
                                           int mode)

Unsafe version of: compress_dxt_block

stb_compress_dxt_block

public static void stb_compress_dxt_block(java.nio.ByteBuffer dest,
                                          java.nio.ByteBuffer src_rgba_four_bytes_per_pixel,
                                          boolean alpha,
                                          int mode)

Call this function for every block (you must pad). The source should be a 4x4 block of RGBA data in row-major order; A is ignored if you specify alpha=0; you can turn on dithering and "high quality" using mode.

Parameters:

dest - a buffer in which to store the compressed block

src_rgba_four_bytes_per_pixel - the block to compress

alpha - 1 to compress the alpha channel, 0 to ignore it

mode - the compression mode. One of:

DXT_NORMAL

DXT_DITHER

DXT_HIGHQUAL

nstb_compress_bc4_block

public static void nstb_compress_bc4_block(long dest,
                                           long src_r_one_byte_per_pixel)

Unsafe version of: compress_bc4_block

stb_compress_bc4_block

public static void stb_compress_bc4_block(java.nio.ByteBuffer dest,
                                          java.nio.ByteBuffer src_r_one_byte_per_pixel)

Call this function for every block (you must pad). The source should be a 4x4 block of A data in row-major order.

Parameters:

dest - a buffer in which to store the compressed block

src_r_one_byte_per_pixel - the block to compress

nstb_compress_bc5_block

public static void nstb_compress_bc5_block(long dest,
                                           long src_rg_two_byte_per_pixel)

Unsafe version of: compress_bc5_block

stb_compress_bc5_block

public static void stb_compress_bc5_block(java.nio.ByteBuffer dest,
                                          java.nio.ByteBuffer src_rg_two_byte_per_pixel)

Call this function for every block (you must pad). The source should be a 4x4 block of RG data in row-major order.

Parameters:

dest - a buffer in which to store the compressed block

src_rg_two_byte_per_pixel - the block to compress