Package icyllis.arc3d.engine

Class DataUtils

java.lang.Object

icyllis.arc3d.engine.DataUtils

public final class DataUtils
extends Object

Method Summary

Modifier and Type	Method	Description
static boolean	compressionTypeIsOpaque(int compression)
static long	computeCombinedBufferSize(int mipLevelCount, int bytesPerBlock, int width, int height, int compressionType, long[] mipOffsetsAndRowBytes)	Compute the size of the buffer required to hold all the mipLevels of the specified type of data when all rowBytes are tight.
static int	computeMipLevelCount(int width, int height, int depth)
static long	computeSize(ImageDesc desc)
static int	num4x4Blocks(int size)
static int	numBlocks(int compression, int size)
static long	numBlocks(int compression, int width, int height)

Methods inherited from class java.lang.Object

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

Method Details

compressionTypeIsOpaque

public static boolean compressionTypeIsOpaque(int compression)

num4x4Blocks

public static int num4x4Blocks(int size)

numBlocks

public static long numBlocks(int compression,
 int width,
 int height)

numBlocks

public static int numBlocks(int compression,
 int size)

computeSize

public static long computeSize(ImageDesc desc)

computeMipLevelCount

public static int computeMipLevelCount(int width,
 int height,
 int depth)

computeCombinedBufferSize

public static long computeCombinedBufferSize(int mipLevelCount,
 int bytesPerBlock,
 int width,
 int height,
 int compressionType,
 long[] mipOffsetsAndRowBytes)

Compute the size of the buffer required to hold all the mipLevels of the specified type of data when all rowBytes are tight.

Note there may still be padding between the mipLevels to meet alignment requirements.

Returns total buffer size to allocate, and required offset alignment of that allocation. Updates 'mipOffsetsAndRowBytes' with offsets relative to start of the allocation, as well as the aligned destination rowBytes for each level.

The last pair of 'mipOffsetsAndRowBytes' holds combined buffer size and required alignment.