/// <summary>
/// Output a column of data into the columnbuilder; after doing this with all columns the builder will be resolved to a new, merged column
/// </summary>
unsafe void DownSamplePartial(int x, int z, int extraLods, ref WorldBuilder.RLEColumnBuilder columnBuilder)
{
RLEColumn column = *Storage.GetColumnPointer(GetIndexKnownInBounds(int2(x, z)));
if (column.RunCount <= 0)
{
return;
}
int2 elementBounds = dimensions.y >> lod;
int nextLod = lod + extraLods;
ColorARGB32 *colorPointer = column.ColorPointer(ref Storage);
for (int run = 0; run < column.RunCount; run++)
{
RLEElement element = column.GetIndex(ref Storage, run);
elementBounds = int2(elementBounds.x - element.Length, elementBounds.x);
if (element.IsAir)
{
continue;
}
for (int i = 0; i < element.Length; i++)
{
int Y = elementBounds.x + i;
int colorIdx = element.ColorsIndex + element.Length - i - 1;
columnBuilder.SetVoxel(Y >> nextLod, colorPointer[colorIdx]);
}
}
}
