Consistent null checks, fixes for copy/pasted conditions, copy pasted LOCTEXT identifiers, comparisons against literals of the wrong type, missing return statements, dead code, and some system calls that were ignoring their return value
[CL 2494390 by Dan Oconnor in Main branch]
These can be generally described as removing redundant condition checks, using logical operators instead of bitwise operators, removal of redundant parenthesis, and consistent use of pragma push and pragma pop. There is very little observable behavior change in this CL.
Changes that required further review are pending in 2489753
[CL 2489804 by Dan Oconnor in Main branch]
Landscape export LOD uses MaxLOD from landscape actor by default
Sub-levels LOD generation will be still accessible when sub-level has landscape actor but user has no Simplygon available, in this case all geometry except landscape will be stripped
[CL 2476499 by Dmitriy Dyomin in Main branch]
Disabled index buffer optimization when mesh has more than 50000 triangles. These won't be game meshes and the optimization time takes too long.
Also disabled adjacency buffer generation for high poly meshes. This would be better done as an import option.
[CL 2411296 by Brian Karis in Main branch]
* Requires a Movable Skylight + 'r.DistanceFieldGI 1' + 'r.GenerateMeshDistanceFields' project setting enabled
* Provides a single bounce of Diffuse GI with bounce distance limited by OcclusionMaxDistance (default 6m)
* Virtual Point Lights are placed from the directional light by ray tracing the scene's distance fields, normal comes from SDF gradient
* Currently only placing 128*128 VPLs up to 40m from camera
* VPLs light irradiance cache samples using hemispherical disk light model, indirect shadowing is provided by the same cone traces used for Distance Field AO
* Irradiance is computed only at irradiance cache points (max every 8 pixels) and interpolated to the rest of the pixels
* Hardcoded half grey material color for now, and poor performance due to brute force VPL lighting
[CL 2390645 by Daniel Wright in Main branch]
