Search code examples
colorsxnaalphablendingpremultiplied-alpha

Color.FromNonPremultiplied different tinting with BlendState.NonPremultiplied

In my XNA project I use non-processed images and draw them with BlendState.NonPremultiplied so they look normal around the edges. But when I use non-white color (Color.FromNonPremultiplied(12, 34, 56, 78)) in SpriteBatch.Draw method, it doesn't tint the sprite as it would if the BlendState was set to default.

How do I achieve the same tinting as default blendstate allows without switching to it?

Solution

  • The documentation says about Color.FromNonPremultiplied Method: Converts a non-premultipled alpha color to a color that contains premultiplied alpha.

    Based on this you should use either BlendState.NonPremultipliedand Color(12, 34, 56, 78)

    OR

    BlendState.AlphaBlend and Color.FromNonPremultiplied(12, 34, 56, 78)

    together.