public void generateBlocks()
{
blocks.Clear();
int blockCount = (uncompressedSize + blocksize - 1) / blocksize;
compressedSize = 0;
for (int i = 0; i < blockCount; i++)
{
//if data was not found, skip
if (uncompressedData == null)
{
continue;
}
int blockOffset = i * blocksize;
int blockEnd = blockOffset + blocksize;
if (blockEnd > uncompressedSize)
{
blockEnd = uncompressedSize;
}
var block = new ChunkBlock();
block.uncompressedDataSize = blockEnd - blockOffset;
block.uncompressedData = new byte[block.uncompressedDataSize];
Array.ConstrainedCopy(uncompressedData, blockOffset, block.uncompressedData, 0, block.uncompressedData.Length);
block.compressTextureFlags(flags);
compressedSize += block.compressedSize;
blocks.Add(block);
}
}
private void ReadMipMapFromReader(BinaryReader reader, MipMap map, GpkPackage package)
{
map.signature = reader.ReadInt32(); //0x9e2a83c1
Debug.Assert(map.signature == Constants.DEFAULT_SIGNATURE);
map.blocksize = reader.ReadInt32();
map.compressedSize = reader.ReadInt32();
map.uncompressedSize_chunkheader = reader.ReadInt32();
map.uncompressedData = new byte[map.uncompressedSize];
map.blockCount = (map.uncompressedSize + map.blocksize - 1) / map.blocksize;
int blockOffset = 0;
for (int j = 0; j < map.blockCount; ++j)
{
var block = new ChunkBlock();
block.compressedSize = reader.ReadInt32();
block.uncompressedDataSize = reader.ReadInt32();
map.blocks.Add(block);
}
foreach (ChunkBlock block in map.blocks)
{
block.compressedData = reader.ReadBytes(block.compressedSize);
block.decompressTextureFlags(map.flags);
Array.ConstrainedCopy(block.uncompressedData, 0, map.uncompressedData, blockOffset, block.uncompressedDataSize);
blockOffset += block.uncompressedDataSize;
//save memory
block.uncompressedData = null;
}
//we clear the compressed chunkblocks, so only uncompressed data is present
//blocks need to be rebuild when saving
if (package.LowMemMode)
{
map.blocks.Clear();
}
}
