Blender Git Commits

First ping pong between low resolution buffers working. Nice landmark
for working code.

Also cleanup unused variables and do not bind the same texture to two slots
(blurred texture is going to be different anyway)

Framebuffer compositing:

* Cleanup compositing buffers better when not needed.

* Support passes for the dof effect through defines in main - easy
solution to allow not having too many files for one shader effect.

SSAO and DOF work well together now.

Code that enables simultaneous DOF-SSAO effect. There's some sort of
texture coordinate offset still.

Use optimized view space reconstruction for ortho case as well.

Add a library file for projection shader code, should enable us to use
optimized position calculation again - relevant for both SSAO and DOF

More attempts to synchronize viewport and camera dof - probably will
need fixes in the rendering systems. Reserve textures for the dof
effect.

Moved render simplification function for particle distribution into the
distribution code.

Removed unused variable.

A little bit of code sanity by splitting particle distribution function
by type.

Instead of squashing totally unrelated code into the same monster
function.

Moved particle code for distributions into own file to make hacking
easier.

This code is badly broken and needs to be replaced, but at least having
a workable code structure might help with quick hacks to fix the worst
cases.

DOF calculation shader.

Merge branch 'master' into viewport_experiments

Add separate file for DOF effect and cleanup the parameter passing a little.

Separate SSAO pass - it's unlikely we'll be able to reuse this with
depth of field in one pass, so better separate the shaders as well

Fix irritating issue with self shadowing.

Issue here was position reconstruction could use depths from pixels off
the initial position. Using linear filtering here eliminates the issue.

Usually this is not correct however given that for depth discontinuities
we will get different depths anyway, the cases where we get smooth
interpolation of depths helps a lot in image quality.

Add some pedantic GLSL casts to make shader compile in OSX

SSAO introduce quality settings

Basically change the way SSAO samples the screen by using a circular
filter instead. This is inspired by HBAO though we still don't use this.

The quality settings change the number and density of samples. We can
definitely improve things here though.

We also jitter the sampling locations per pixel. Generally this adds a
kind of noise. Some banding is, unfortunately still apparent and small
distances will introduce noise. This can be fixed but I will have to see
if it can be done without much of a cost.

Merge branch 'master' into hair_immediate_fixes

Conflicts:
source/blender/blenkernel/intern/key.c

Removed unused line.