Blender Git Loki

LineArt: Added back bounding_area->linked_lines access to fix chaining problem.

Add line primitive node

Add functional line node

Merge branch 'geometry-nodes-mesh-primitives' into temp-geometry-nodes-mesh-primitive-line

Cleanup: Remove unused includes, change switch to if

Add boilerplate code for a line primitive

Cleanup: Spelling

Cleanup: remove static

Cleanup, revert some changes

Revert changes split to a separate patch

D10712

Rename and reorder variables for consistency

Move cylinder / cone code to cone file

Merge branch 'master' into geometry-nodes-mesh-primitives

Compositor anti-aliasing: map values between 0 and 1

expose values in ranges between 0 and 1 to user

Merge branch 'master' into geometry-nodes-mesh-primitives

Merge branch 'master' into geometry-nodes-mesh-primitives

Fix "has properties" check

Merge branch 'master' into refactor-idprop-ui-data

Compositor: Add Anti-Aliasing node

This is an implementation of Enhanced Subpixel Morphological Antialiasing (SMAA)

The algorithm was proposed by:

Jorge Jimenez, Jose I. Echevarria, Tiago Sousa, Diego Gutierrez
Homepage URL:

http://www.iryoku.com/smaa/
This node provides only SMAA 1x mode, so the operation will be done with no spatial multisampling nor temporal supersampling.

Here is a comparison between existing antialiasing (Scale3x, imported from GIMP) and the Anti-Aliasing Node (SMAA 1x):

SMAA 1x produces much higher quality results than Scale3x.
The existing AA operation seems to be used only for binary images by some other nodes. Using SMAA for binary images needs no important parameter such as "threshold", so we perhaps can switch the operation to SMAA, though that changes existing behavior.

Currently, the node has 3 options:

threshold
local contrast adaptation factor
corner rounding
Please refer to devtalk thread for discussion about interface: https://devtalk.blender.org/t/compositor-anti-aliasing-node-d2411/17570

Example: Using Anti-Aliasing Node as an alternative of OLM smoother that is widely used in Japanese animation studios:

Notes:

The program code assumes the screen coordinates are DirectX style that the vertical direction is upside-down, so "top" and "bottom" actually represent bottom and top, respectively
smaa_areatex.cpp is a stand-alone software I [Shinsuke Irie] wrote for another project, so its copyright is still owned by me and under MIT-style license, see https://github.com/iRi-E/smaa-cpp
Unfortunately, this patch doesn't include OpenCL support (I'm not familiar with it...), though SMAA is not so slow
Tested on macOS 11.2.1

LineArt: Comment grammar and clarity fixes in lineart_chain.c