Blender Git Commits

Render branch: use lamp_sample in ray_shadow_qmc.

Render branch: fix halo rendering bug in hairball.blend.

Render Branch

Some refactoring of blender rendering code, various code changes to clean
up the code and make it easier to extend and fit in the new shading system.
This also deprecates a number of features, so breaks backwards compatibility
already. No new shading system or new features in this commit.

Also, don't report bugs or problems for this branch yet.

Deprecated features:
* World exposure/range.
* Backbuf image.
* Specular transparency.
* Energy Ramps.
* Jittered sampling for AO and Area lamps.
* Warping and stencils in the texture stack.
* Sticky texture coordinates.

Code changes:
* Many file and function renames, splitting, keeping the working of the
code intact but making the existing structure more clear.
* Render global R replaced by local variables.
* Shading and pass combining for solid and z-transp is now unified.
* Render and ShadeInput structs have been split up into nested structs.
* Threaded render no longer uses sleep().
* Lamp shading loop has been reorganized. This will make some renders
look different, some due to bugs being fixed, and some due to new bugs.
* Texture nodes are now a texture type rather using the "use nodes"
button.

More details on second part of this page:
http://wiki.blender.org/index.php/BlenderDev/ShadingSystem/Notes

svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r26172:26191

Create branch for experimental 2.5 rendering work.