999a1e514b
- shadow volume vertex are now shared, using DrawElements instead of repeated calls to glVertex, this can improve performance on some systems. - added a rendering path that use the alpha channel instead of the stencill buffer. - releasing memory when tiles objects are destroyed - objects sub parts will not cast shadows if their name begins with "noshadow" or if they are in a <noshadow> animation - bbcache.cxx : don't ask for a 32 bits context when the primary context is only 16 bits - RenderTexture.cpp : corrected a crash when asking for a second rendering context on win32 and extensions not being supported - model.cxx, animation.cxx : added a <noshadow> animation, added an animation type needed by the shadow code.
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