private uint PackTileInAtlas(uint layerIdx, uint tx, uint ty)
{
var tileIndex = tx + (ty * _mlmask.Layers[layerIdx].WidthInTiles0);
if (_mlmask.Layers[layerIdx].Tiles[Convert.ToInt32(tileIndex)].AtlasInPosition == uint.MaxValue)
{
BlockCompressLocalTile(ref _mlmask.Layers[layerIdx], tileIndex);
var recursiveHash = FNV1A.FnvHashInitial;
for (uint y = 0; y < _mlmask.AtlasTileSize / 4; y++)
{
for (uint x = 0; x < _mlmask.AtlasTileSize / 4; x++)
{
var compressedBlock = _mlmask.Layers[layerIdx].Tiles[Convert.ToInt32(tileIndex)].AtlasBlockCompressed[x + (y * _mlmask.AtlasTileSize / 4)];
var color32 = new float[16];
D3DX.D3DXDecodeBC4U(ref color32, compressedBlock);
var color8 = new byte[16];
for (uint i = 0; i < 16; ++i)
{
color8[i] = Convert.ToByte(color32[i] * 255.0f);
}
recursiveHash = FNV1A.HashReadOnlySpan(color8, recursiveHash);
}
}
var atlasView = new TileView();
if (!_mlmask.AtlasTiles.TryGetValue(recursiveHash, out atlasView))
{
var atlasTile = new TileView
{
AtlasInPosition = _mlmask.AtlasTilesCount++,
LayerIndex = layerIdx,
LayerTileIndex = tileIndex
};
atlasView = atlasTile;
_mlmask.AtlasTiles.Add(recursiveHash, atlasTile);
}
var z = _mlmask.Layers[layerIdx].Tiles[Convert.ToInt32(tileIndex)];
z.AtlasInPosition = atlasView.AtlasInPosition;
_mlmask.Layers[layerIdx].Tiles[Convert.ToInt32(tileIndex)] = z;
}
return(_mlmask.Layers[layerIdx].Tiles[Convert.ToInt32(tileIndex)].AtlasInPosition);
}
uint PackTileInAtlas(uint layerIdx, uint tx, uint ty)
{
uint tileIndex = (tx + ty * mlmask.layers[layerIdx]._widthInTiles0);
if (mlmask.layers[layerIdx].tiles[Convert.ToInt32(tileIndex)]._atlasInPosition == uint.MaxValue)
{
BlockCompressLocalTile(ref mlmask.layers[layerIdx], tileIndex);
UInt64 recursiveHash = FNV1A.FnvHashInitial;
for (uint y = 0; y < mlmask._atlasTileSize / 4; y++)
{
for (uint x = 0; x < mlmask._atlasTileSize / 4; x++)
{
UInt64 compressedBlock = mlmask.layers[layerIdx].tiles[Convert.ToInt32(tileIndex)]._atlasBlockCompressed[x + y * mlmask._atlasTileSize / 4];
float[] color32 = new float[16];
D3DX.D3DXDecodeBC4U(ref color32, compressedBlock);
Byte[] color8 = new Byte[16];
for (uint i = 0; i < 16; ++i)
{
color8[i] = Convert.ToByte(color32[i] * 255.0f);
}
recursiveHash = FNV1A.HashReadOnlySpan(color8, recursiveHash);
}
}
TileView atlasView = new TileView();
if (!mlmask._atlasTiles.TryGetValue(recursiveHash, out atlasView))
{
TileView atlasTile = new TileView();
atlasTile._atlasInPosition = mlmask._atlasTilesCount++;
atlasTile._layerIndex = layerIdx;
atlasTile._layerTileIndex = tileIndex;
atlasView = atlasTile;
mlmask._atlasTiles.Add(recursiveHash, atlasTile);
}
var z = mlmask.layers[layerIdx].tiles[Convert.ToInt32(tileIndex)];
z._atlasInPosition = atlasView._atlasInPosition;
mlmask.layers[layerIdx].tiles[Convert.ToInt32(tileIndex)] = z;
}
return(mlmask.layers[layerIdx].tiles[Convert.ToInt32(tileIndex)]._atlasInPosition);
}