I have a "lighting" texture (black background with white or colours for lights) that I want to draw as a multiplcation operation.
SpriteBatch.Begin can specify
BlendState.Additive, but there's no
I also tried the solution in this answer, but it didn't work -- even when I (incorrectly?) changed the code to work with XNA 4 style
ColorDestinationBlend, I ended up with the final solution being inverted (black area where the light is, everything else is visible).
I initially thought of a shader, but I couldn't get shaders to work with MonoGame, so I'm falling back to