Blood floor

I am trying to make a ground that is covered in blood as enemies are killed(the number of enemies is infinite). And may that blood continue until the end of the game.

I saw the use of decals ,vertex paint or blueprint drawing to render targets, but i dont know wich is more optimized.

Here an example of what i want:



Hey there, out of your 3 options I’d go with Vertex Paint, it won’t be as precise as dropping a decal where the enemy dies but it will be more efficient since you only change the color of the vert once VS. dropping too many decals after a while. You can also try mixing both by dropping a decal for a medium amount of time while enough vert paint calls collect underneath.

Thank you i will try!