This seems to be a correct implementation of the same diffusion profile as Cycles uses by default.
There are a few bias though:
- We consider _A_ the albedo to be 1 when evaluating _s_.
- We use a factor of 0.6 when computing _d_ to match more or less cycles results.
Note that doing per pixel jittering does bias the result even further (loss of energy).
The loc one (shift-alt-G) was same as 'remove selected from active group'
action... Clear delta transform is not a common operation, so we can
live without a default shortcut for it.
Note that using same key (G) in same space for two completely different
kind of operations is probably a rather bad thing, nice topic for future
keymap work. ;)
Probably nice to have in 2.79a.
This was caused by 93936b8643
From GL spec :
GL_INVALID_OPERATION is generated if mask contains GL_DEPTH_BUFFER_BIT or GL_STENCIL_BUFFER_BIT and the source and destination depth and stencil formats do not match.
So blitting framebuffer with depth or stencil require the SAME FORMAT.
The issue was caused by SpinLock implementation in old pthreads we ar eusing on
Windows. Using newer one (2.10-rc) demonstrates same exact behavior. But likely
using own atomics and memory barrier based implementation solves the issue.
A bit annoying that we need to change such a core part of Blender just to make
specific CPU happy, but it's better to have artists happy on all computers.
There is no expected downsides of this change, but it is so called "works for
me" category. Let's see how it all goes.
Samples : pretty self explanatory.
Jitter Threshold : Reduce cache misses and improve performance (greatly) by lowering this value. This settings let user decide how many samples should be jittered (rotated) to reduce banding artifacts.
How to use:
- Enable subsurface scattering in the render options.
- Add Subsurface BSDF to your shader.
- Check "Screen Space Subsurface Scattering" in the material panel options.
This initial implementation has a few limitations:
- only supports gaussian SSS.
- Does not support principled shader.
- The radius parameters is baked down to a number of samples and then put into an UBO. This means the radius input socket cannot be used. You need to tweak the default vector directly.
- The "texture blur" is considered as always set to 1
Add the 3D view ruler as a tool,
the modal operator remains for now
however it may be removed if we use the tool-system for 2.8.
Note that this does copy code from the operator,
its different enough not to attempt to de-duplicate.
Faces that have the last two indices equal are considered triangles, and not those that the last index is 0
Improvement of 7% in performance of the `polygonize` function
We now created nested collections for the original Collection 1, 2 ...
collections for the "hide" and "hide_render" objects.
Also, remove logic for rename single-collection files, it's now kept as
it was originally (Collection 1, Collection 5, ...).
Thanks Sergey Sharybin and Pablo Vazquez for patch review and suggestions.
