JeremyAnsel.BcnSharp

JeremyAnsel.BcnSharp

JeremyAnsel.BcnSharp is a .Net library to encode and decode BCn BC3 BC5 BC7 texture compression formats.

The JeremyAnsel.BcnSharp library is based on the bc7enc_rdo library. See https://github.com/richgel999/bc7enc_rdo

Usage

The methods to encode and decode textures are in these static classes: Bc7Sharp, Bc5Sharp, Bc3Sharp.

The methods are:

int GetEncodedArrayLength(int width, int height)
byte[] CreateEncodedArray(int width, int height)
void Encode(IntPtr pBlock, IntPtr pPixelsRGBA, int width, int height)
void Encode(byte[] pBlock, byte[] pPixelsRGBA, int width, int height)
byte[] Encode(byte[] pPixelsRGBA, int width, int height)
int GetDecodedArrayLength(int width, int height)
byte[] CreateDecodedArray(int width, int height)
void Decode(IntPtr pBlock, IntPtr pPixelsRGBA, int width, int height)
void Decode(byte[] pBlock, byte[] pPixelsRGBA, int width, int height)
byte[] Decode(byte[] pBlock, int width, int height)

The length of encoded array is

((width + 3) / 4) * ((height + 3) / 4) * 16

The length of decoded array is

width * height * 4

The encode and decode methods can create a new output array or can be called with an existing output array.