Testing flipbook in UE4 to see what channels I should use, so far I fit in one texture using Emmisive, RenderKey,RenderAmbient and alpha. I’m adding RenderAmbient with RenderKey for smoke color (Base Color) and multiplying it by a value. For flames I’m using Emmisive channel going through the smooth step (controlled by alpha particle color), then multiplying it by a blackbody and multiply again by a value. Setting high smoothness in smooth step and setting the curve to go from -.1 to 0 gives a nice highlighted smoke from the flames.
