First tests of the next major feature for Cobra3D, Bullet physics integration.
This demo has 1000 textured cubes dropping to the ground, with shadows.
It's a simple enough demo, and probably not the fastest it can go as I'm manually aligning the cubes to the physics objects in the cobra code. The final version will do this automagically, in the same way as 2d sprites are controlled directly by the 2d Physics engine.

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Second one....