This is for being able to render shadowmap just once per frame - all dynamic cubemap faces and full scene can share the same shadowmap (at least until we don't have camera-specific fine-tuned shadowmaps).

Added morph to rendering testbed.
Simplified shadowmap shader snippet gamma handling.

Do not merge, this is very experimental, not sure about correctness, also tons of unsolved things.

Finally, the trouble was at the application level: renderer.clear clears the current framebuffer, which, if you juggle multiple render targets, doesn't have to be necessarily the screen. Here it was the last face of cube render target.

Turns out before all cube texture faces shared a single depth buffer.

Last cube face still missing.

Before lighting was messed up in dynamically generated cube maps.

Dynamic cube maps need to have flip uniforms (flipEnvMap / tFlip) set to 1, static cube maps to -1 (default).

For standard materials this is handled automatically, it's just something to be aware of when using cube maps in custom ShaderMaterials (dynamic and static cube maps have different cube face orientations, dynamic ones are correct, static ones need flipped x-axis in lookup vector).

There is still mystery of disappearing last cube face (negative-Z) and weirdly clipped objects in cars demo (works ok in simpler test).

Remembered that @alteredq managed to get this working on a viewer for ro.me. So I just copied the code :)

Pretty useless, no way I can try it and it's probably done in hardware anyway. But looks cool :P
http://en.wikipedia.org/wiki/Parallax_barrier

This feels more intuitive, otherwise ambiently lit textured surfaces look weird.

Turns out I had it right before after all: to get rid of artefacts it should be multiplied by diffuse term (instead of being patched by conditional).

Unfortunately "File" doesn't have path information, so textures won't load :/
Tried to also drop .js files, but the Workers part ruined the party too :/ :/

Not much luck yet, for some reason the camera zooming doesn't work  on the orthographic views :/

* Fixed `ColladaLoader` and `Loader` url base extraction code.
* `ColladaLoader` now ignores non-joint nodes when constructing the skeleton. (Hopefuly, in a  year time, I'll find this fix stupid)