MeshSelectionTool: enable new decomposition support to improve painting performance on large meshes. Fix code that was doing repeated linear searches to remove elements from a potentially-very-large array. Make brush-ROI tri centroid point rendering optional.
#rb jimmy.andrews
#rnx
#jira none
[CL 15175542 by Ryan Schmidt in ue5-main branch]
#rb none
#rnx
#ROBOMERGE-SOURCE: CL 12908995 via CL 12908996 via CL 12909001
#ROBOMERGE-BOT: RELEASE (Release-Engine-Staging -> Main) (v682-12900288)
[CL 12909003 by ryan schmidt in Main branch]
Problem is that during remesh passes the affected triangle set can expand (due to splits/collapses on ROI boundary) and our tracking of it is not perfect. Remesher now tells ChangeTracker before it modifies an edge, rather than Sculpt tool trying to predict set of modified triangles up front.
In theory this allows for smaller changes, because often only a subset of triangles are modified. However ChangeTracker currently only emits modified vertices as part of modified triangles. So we still need to save the full triangle ROI. Made several MeshChangeTracker functions protected for now, because they cannot be used externally due to this limitation. Updated call sites to those functions (which were likely also buggy).
#rb jimmy.andrews
#rnx
#jira none
#ROBOMERGE-SOURCE: CL 12459928 in //UE4/Release-4.25/... via CL 12459930 via CL 12459991
#ROBOMERGE-BOT: RELEASE (Release-Engine-Staging -> Main) (v672-12450963)
[CL 12460009 by ryan schmidt in Main branch]
#jira UE-90972
#rb none
#rnx
#ROBOMERGE-SOURCE: CL 12358201 in //UE4/Release-4.25/... via CL 12358202
#ROBOMERGE-BOT: RELEASE (Release-4.25Plus -> Main) (v671-12333473)
[CL 12358207 by jimmy andrews in Main branch]
- fix broken sculpt material that went to white in many cases, replace with diffuse shading and rim light in Emissive channel / unlit texture
- add image-based sculpt materials provided by techart, expose custom variant that allows user-defined shader image
- make flat shading optional in view settings, for relevant shaders
- reorganize properties and update tooltips to be more informative
- fix broken Falloff support and expose in property set, display in brush highlight. Make this separately exposable in BaseBrush property set since we don't need Strength.
- add viewpoint-based Sculpt and Plane brush modes
- fix brush preview location when in hover, was not respecting target surface setting
#rb none
#rnx
#jira none
[FYI] JeanSebastien.Guay
#ROBOMERGE-SOURCE: CL 12164804 in //UE4/Release-4.25/... via CL 12164806
#ROBOMERGE-BOT: RELEASE (Release-4.25Plus -> Main) (v661-12148976)
[CL 12164813 by ryan schmidt in Main branch]
#rb none
#rnx
#jira none
#ROBOMERGE-SOURCE: CL 12113495 in //UE4/Release-4.25/... via CL 12113506
#ROBOMERGE-BOT: RELEASE (Release-4.25Plus -> Main) (v657-12064184)
[CL 12113515 by ryan schmidt in Main branch]
#rb none
#rnx
#jira UE-84211
#ROBOMERGE-SOURCE: CL 12026998 in //UE4/Release-4.25/... via CL 12027009
#ROBOMERGE-BOT: RELEASE (Release-4.25Plus -> Main) (v656-11643781)
[CL 12049347 by ryan schmidt in Main branch]
to support that: adds some support for packing multiple meshes into one dynamic mesh via a triangle attribute, a meshreplacementchange, and some improvements to the plane cut algo
#rb none
#rnx
[CL 10494329 by Jimmy Andrews in Dev-Editor branch]
