Blender Git Loki

Cleanup: Use always even numbers for samples

Cleanup: Simplify shader parameters

Restructure VFX Blur, add Samples and cleanup

Now, the number of defined passes is low and there is a new parameter to define number of samples.

Merge branch 'blender2.8' into greasepencil-object

Cleanup unused variable

Replace constant bokeh value by parameter

Fix compilation error after merge

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/gpu/GPU_shader.h

Fix DOF render segment fault and use Eevee UI options

To activate the DOF for grease pencil, the Eevee option is used as main flag.

Merge branch 'greasepencil-object' into GP-DepthOfField

Merge branch 'blender2.8' into greasepencil-object

WIP: Fix alpha channel and replace by weights

Still there is a problem with the external border.

Thanks Cl�ment for the help.

WIP: More work on shaders and framebuffers for DOF

Still there are problems with the alpha factor and all the scene is empty because alpha is always 0.

Remove texture Free for DOF

These textures are freed by draw manager and don't need explicit free.

Fix wrong function to assign texture to shader

WIP: Start to add DOF support

Still is not working. Save this commit as reference.

Merge branch 'blender2.8' into greasepencil-object

Cleanup comments

Cleanup shader code

Fix alpha double blend

The color when used alpha factor always got darker. The problem was a double blend that produced a reduction in the color saturation.

Now, there is a premult of the alpha factor before doing last blend pass.

As a result of this change, now the drawing process can be simplified and a pass can be removed. Some cleanup done too.

Still need more work in render mode. Maybe the problem in render is related to Tonemapping.

Thanks Cl�ment Foucault for his help solving this issue.