Blender Git Loki

fix, errant search/replace had changed GPU_immediate.h to GPU_IMMEDIATE.h, which works on Windows but will fail elsewhere.

Renamed some unclear functions. gpuImmediateBufferSizes -> gpuImmediateElementSizes, gpuImmediateSize -> gpuImmediateMaxVertexCount

gpuImmediate: A simplified replacement for OpenGL immediate mode.

This is an initial commit of the API. I have not converted any code to use this yet. There may be problems with use of the "restrict" keyword because I was not able to test it.

Bring branch into sync with turnk again, some files were missed in past merges

Merge from trunk r46815-r46913

Enabled FFTW3 like it is already with scons

- Delete one of many "bak" files
- Commit wip code, to help with merging changes from trunk

Update Eigen3 to latest 3.1 alpha2 to have support of sparse matrices

Adding the start to an async option for bge.logic.LibLoad(). The basic threading works, but there are still some issues that need to be addressed:
* Memory leaks when canceling a thread. I'll try to fix these with more cleanup callbacks like the one used in async_convert().
* The user has no way of knowing when an asset has been loaded. I'm thinking some sort of Future object would work here.
* Only works for scenes. It will be simple to support Mesh and Action as well, but I want to do it in a such a way as to minimize code duplication.

Maintain image transform tool
==================================
Add intermediate function to detect boundary edges that will be
artificially pinned and faces to reunwrap. Still not 100% certain the
reunwrap method will work, still I hope it will do the trick. Still, a
similar function will likely be needed for the second method that I will
use, should the first one fail.

Maintain image transform tool
===============================
GUI and RNA options for retain image transform tool. This is known as
"preserve UVs" in other programs, but I find this terminology deceptive
because UVs are, in fact, modified. It is actually the image that is
maintained on the mesh.

svn merge ^/trunk/blender -r46037:46828

svn merge ^/trunk/blender -r46037:46827

svn merge ^/trunk/blender -r46037:46826

Merge w/ Trunk r46806-r46823

Hoping this fixes a build error.

Forgot to commit rest of smoke

leftover from merge

Merge from trunk r46614-r46814

- Use Smoke code from trunk again:
Unforeseen problems: The new code uses hidden arrays, file based functions. Nils himself describes the code as following in one of his new papers "Unuseable for rising smoke". What a bummer.
- New approach: Backport features as moving obstacles, preconditioned conjugate gradient solver, etc.

- This commit also contains the following code:
Better pressure and divergence calculation, idea taken from NVIDIA (graphic gems #3)

minor optimization of font rendering

Made some large local arrays static and used array instead of pointers to help compiler with aliasing issues.
Made glBegin/glEnd only called once.
I plan to replace the glBegin/glEnd paradigm with a set of inline functions for filling in VBO, so this isn't just shuffling around deprecated functionality.