public int GetMaxSize(VTOutput output)
{
if (_maxSize == null)
{
_maxSize = _channelProperties.Values.Max(t => TextureData.GetData(t.Item1).Width);
}
return(_maxSize.Value);
}
public void Load(Texture2DArray[] targets, Vector2 position, int size, VTOutput output)
{
var channels = VT0Info.Current.Channels;
var outSize = output.Size;
int srcMipBias = outSize - size;
for (int i = 0; i < channels.Count; i++)
{
var props = _channelProperties[channels[i]];
var target = targets[i];
var data = TextureData.GetData(props.Item1);
var stagingKey = ValueTuple.Create(data.Width, data.Height, data.Format);
Texture2D staging;
_staging.TryGetValue(stagingKey, out staging);
if (staging == null)
{
_staging[stagingKey] =
(staging = new Texture2D(data.Width, data.Height, data.Format, true));
}
// TODO: Only stage the mips we need
staging.LoadRawTextureData(data.Data);
var intPos = Vector2Int.FloorToInt(
Vector2.Scale(position, new Vector2(target.width, target.height)));
var mipCount = (int)Mathf.Log(Mathf.Min(target.width, target.height), 2);
for (int m = 0; m < mipCount; m++)
{
Graphics.CopyTexture(
staging, 0, m + srcMipBias, 0, 0, data.Width, data.Height,
target, 0, m, intPos.x, intPos.y
);
}
_material.SetVector(props.Item2, new Vector4(position.x, position.y,
(float)size / outSize,
(float)size / outSize)); // TODO: Rectangular texture support
}
}