public bool Decode(TexFormat format, byte[] input, int width, int height, out byte[] output)
{
output = null;
if (format.ToString().StartsWith("ASTC"))
{
var x = (int)TextureFormatHelper.GetBlockWidth(format);
var y = (int)TextureFormatHelper.GetBlockHeight(format);
var z = (int)TextureFormatHelper.GetBlockDepth(format);
output = ASTCDecoder.DecodeToRGBA8888(input, x, y, z, width, height, 1);
}
return(output != null);
}
public static List <uint[]> GenerateMipSizes(TexFormat Format, uint Width, uint Height, uint Depth, uint SurfaceCount, uint MipCount, uint ImageSize)
{
List <uint[]> MipMapSizes = new List <uint[]>();
uint bpp = TextureFormatHelper.GetBytesPerPixel(Format);
uint blkWidth = TextureFormatHelper.GetBlockWidth(Format);
uint blkHeight = TextureFormatHelper.GetBlockHeight(Format);
uint blkDepth = TextureFormatHelper.GetBlockDepth(Format);
uint blockHeight = TegraX1Swizzle.GetBlockHeight(TegraX1Swizzle.DIV_ROUND_UP(Height, blkHeight));
uint BlockHeightLog2 = (uint)Convert.ToString(blockHeight, 2).Length - 1;
uint Pitch = 0;
uint DataAlignment = 512;
int linesPerBlockHeight = (1 << (int)BlockHeightLog2) * 8;
uint ArrayCount = SurfaceCount;
uint ArrayOffset = 0;
for (int arrayLevel = 0; arrayLevel < ArrayCount; arrayLevel++)
{
uint SurfaceSize = 0;
int blockHeightShift = 0;
uint[] MipOffsets = new uint[MipCount];
for (int mipLevel = 0; mipLevel < MipCount; mipLevel++)
{
uint width = (uint)Math.Max(1, Width >> mipLevel);
uint height = (uint)Math.Max(1, Height >> mipLevel);
uint depth = (uint)Math.Max(1, Depth >> mipLevel);
uint size = TegraX1Swizzle.DIV_ROUND_UP(width, blkWidth) * TegraX1Swizzle.DIV_ROUND_UP(height, blkHeight) * bpp;
if (TegraX1Swizzle.pow2_round_up(TegraX1Swizzle.DIV_ROUND_UP(height, blkWidth)) < linesPerBlockHeight)
{
blockHeightShift += 1;
}
uint width__ = TegraX1Swizzle.DIV_ROUND_UP(width, blkWidth);
uint height__ = TegraX1Swizzle.DIV_ROUND_UP(height, blkHeight);
//Calculate the mip size instead
byte[] AlignedData = new byte[(TegraX1Swizzle.round_up(SurfaceSize, DataAlignment) - SurfaceSize)];
SurfaceSize += (uint)AlignedData.Length;
MipOffsets[mipLevel] = (SurfaceSize);
//Get the first mip offset and current one and the total image size
int msize = (int)((MipOffsets[0] + ImageSize - MipOffsets[mipLevel]) / ArrayCount);
Pitch = TegraX1Swizzle.round_up(width__ * bpp, 64);
SurfaceSize += Pitch * TegraX1Swizzle.round_up(height__, Math.Max(1, blockHeight >> blockHeightShift) * 8);
}
ArrayOffset += (uint)(ImageSize / ArrayCount);
MipMapSizes.Add(MipOffsets);
}
return(MipMapSizes);
}