// Calculates the blended image given a list of layers
public static Texture2D CalculateBlendedTex(List <UPALayer> _layers, UPALayer.BlendMode mode = UPALayer.BlendMode.NULL)
{
if (_layers.Count > 0)
{
// Calculate blended image
Texture2D _result = null;
for (int i = 0; i < _layers.Count; i++)
{
UPALayer.BlendMode tempMode;
if (mode == UPALayer.BlendMode.NULL)
{
tempMode = _layers[i].mode;
}
else
{
tempMode = mode;
}
if (!_layers[i].enabled)
{
continue;
}
if (_result == null)
{
_result = UPABlendModes.Blend(_layers[i].tex, _layers[i].opacity, _layers[i].tex, _layers[i].opacity, tempMode);
}
else
{
_result = UPABlendModes.Blend(_result, 1, _layers[i].tex, _layers[i].opacity, tempMode);
}
}
if (_result == null)
{
Texture2D _empty = new Texture2D(1, 1);
_empty.SetPixel(0, 0, Color.clear);
_empty.Apply();
return(_empty);
}
return(_result);
}
else
{
Texture2D _empty = new Texture2D(1, 1);
_empty.SetPixel(0, 0, Color.clear);
_empty.Apply();
return(_empty);
}
}
public static Texture2D Blend(Texture2D lowerLayer, float lowerOpacity, Texture2D upperLayer, float upperOpacity, UPALayer.BlendMode mode)
{
switch (mode)
{
case UPALayer.BlendMode.NORMAL:
return(Normal(lowerLayer, lowerOpacity, upperLayer, upperOpacity));
case UPALayer.BlendMode.MULTIPLY:
return(Multiply(lowerLayer, lowerOpacity, upperLayer, upperOpacity));
case UPALayer.BlendMode.SCREEN:
return(Screen(lowerLayer, lowerOpacity, upperLayer, upperOpacity));
case UPALayer.BlendMode.NOALPHA:
return(NoAlpha(lowerLayer, lowerOpacity, upperLayer, upperOpacity));
default:
return(Normal(lowerLayer, lowerOpacity, upperLayer, upperOpacity));
}
}