Just a novice here.
I have a scene of a furnace with two separate smoke simulations. I have isolated one smoke simulation in it's own second layer (camera, sun lamp, mesh with smoke and smoke domain). I have managed to composite both together to create the image I want (2 x render layers going through an add node, into the composite node). However, they are part of a 150 frame animation. How do I do this so that I obtain all 150 frames without manually going through each.
I have tried running the animation normally with the composition option ticked in the post processing panel, but it just renders one of the 2 layers (does not seem to change anything).
I cannot simply render both layers simultaneously because the fire in layer one intersects with the smoke domain in layer 2 (which is much too big) and so I get a huge fire on top of the of the small fire I want.
I tried changing the reaction speed to 4, but the fire is still too much too big (4 is the maximum range I am allowed, from 0.01 to 4).
I tried rendering both animations, and then compositing the image sequences, but the smoke from layer 2 appears in the very front of the image, even when a another object is in front (in 3d-space).
Of note: I have the same camera and sun lamp in both layers
I hope that was clear enough. Thank you so much to anyone that takes the time to answer, great community!