Blender Git Loki

Render Branch: remove some unused code from irradiance cache.

Render Branch: remove "inline" accidentally left in for testing,
and also remove and outdated comment.

* Added/clarified some comments in customdata, make it clearer what some of the layer accessor functions do.

* Changed a couple mesh functions to make them public within the editors module

* Change default mask layer name to "Mask".

* added some header files to get it to compile on Ubuntu 10.04

Must be some subtle differences due to conditional compilation.

* no functional changes
* commented code in wm_draw.c that handles saving/restoring depth buffer

* Bug Fix: Some strangeness with how alpha is handled in textures.

* Optimization: Now uses GL_ARB_depth_texture and GLSL to speed up the saving and restoring of the depth buffer needed for On-Surface brush.

Hopefully this restores the performance that was lost.

* Bug Fix: OpenGL state is now preserved after drawing the on-surface brush cursor. This should fix problems with the rest of the UI drawing properly with it enabled.

* Bug Fix: Fixed rotate and thumb brushes to work with symmetry.

* Bug Fix: sculpt cursor not compatible with other paint modes, so it uses old code for non-sculpt modes.

* Bug Fix: corrected behavior or grab when symmetry is enabled

Render Branch: another 10% performance tweak, store child pointers and
child bb just as fixed arrays of size 4 in nodes, nearly all nodes have
this many children, so overall it actually reduces memory usage a bit
and avoids a pointer indirection.

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r29540:29545, skipped particle_system.c

Render Branch: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r29468:29540

Render Branch: fix crash with strands & override materials.

* Changed gridkey to be a struct rather than an int. Has fields for the total number of each type it contains (types currently being coords, masks, normals.)
* This is a step towards having multiple layers of coords or masks.
* Should be no visible change in behavior from this commit.

Render Branch: some optimization tweaks that need more testing on more
scenes, but seems to give a 15% performance improvement in tests here.

* leave out logf() factor in SAH, makes tree build quicker with no
noticeable influence on raytracing on performance?
* set max childs to 4, simplifies traversal code a bit, but also seems
to help slightly in general.

Render Branch: removed a bit too much code along with vertex normal flip,
should work correct again now.