[Hgengine-devs] Recent changes

[Josh <axl...@gm...>]

I made a rather major change to mercury 2.  As before, assets are 
instanced.  One copy of an asset is loaded and uses wherever that asset 
is used.  The assets were stored using auto pointers in the mercury nodes.

Now for the change...

Assets are still instanced. But now instead of being stored in auto 
pointers in nodes they are stored in MercuryAssetInstance classes.  
These classes are stored in nodes.  This allows us to store some 
per-instance data for assets.  Right now I use this for frustum culling, 
and occlusion tests.

We could also put other things there, like a global matrix, or even make 
the innstance data specific to the type.  You could do something with 
models where you load an animated model once but keep its animation data 
specific to each instance.


Also, because of this change, I removed the prerender, render, and post 
render lists. All assets have prerender, render, and postrender executed 
all the time.  We can approach this differently later to make it more 
efficient, it probably needs to be tied in with your experimental 
multi-pass render.