Smoke sometimes intersects the flame

[ndetommaso]

When the smoke is on, sometimes the particles will be layered on top of the flame. This would be fine, except that the smoke maintains the dark background, effectively cutting a hole into the flame.

[johanvts]

I have been thinking about how to fix this and most of my ideas would require a rewrite to handle the drawing of smoke globally on a pr. fireplace basis rather than the current pr. flame method. However I think I have found a fix that would be much easier to implement: Sample and reuse the current face background when drawing the smoke. However this might effect performance.