Make ground fire shader entityMergable #33
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Fixes #1495 (I assume; I don't use that graphics card any more) by allowing all flame sprites to be combined in one draw call. I had imagined that maybe they were drawn separately so that different frames could have different animation frames. But in reality animMap ignores the entity shaderTime (although perhaps it shouldn't), so making the entities mergible doesn't change anything. The frames are already synchronized and it isn't really noticeable.
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Fixes Unvanquished/Unvanquished#1495 (I assume; I don't use that graphics card any more) by allowing all flame sprites to be combined in one draw call.
I had imagined that maybe they were drawn separately so that different frames could have different animation frames. But in reality
animMapignores the entityshaderTime(although perhaps it shouldn't), so making the entities mergible doesn't change anything. The frames are already synchronized and it isn't really noticeable.