Sculpt: PBVH Draw Support for EEVEE

This patch adds support for PBVH drawing in EEVEE.

Notes:
  # PBVH_FACES only.  For Multires we'll need an API to get/cache attributes.  DynTopo support will be merged in later with sculpt-dev's DynTopo implementation.
  # Supports vertex color and UV attributes only; other types can be added fairly easily though.
  # Workbench only sends the active vertex color and UV layers to the GPU.
  # Added a new draw engine API method, DRW_cdlayer_attr_aliases_add.  Please review.
  # The vertex format object is now stored in the pbvh.

Reviewed By: Clément Foucault & Brecht Van Lommel & Jeroen Bakker
Differential Revision: https://developer.blender.org/D13897
Ref D13897

1 files changed, 5 insertions, 3 deletions

diff --git a/source/blender/blenkernel/intern/pbvh_intern.h b/source/blender/blenkernel/intern/pbvh_intern.h
index 98b490b28dd..a4ac2744a73 100644
--- a/source/blender/blenkernel/intern/pbvh_intern.h
+++ b/source/blender/blenkernel/intern/pbvh_intern.h
@@ -2,6 +2,8 @@
 
 #pragma once
 
+struct PBVHGPUFormat;
+
 /** \file
  * \ingroup bke
  */
@@ -123,9 +125,7 @@ struct PBVHNode {
   PBVHPixelsNode pixels;
 };
 
-typedef enum {
-  PBVH_DYNTOPO_SMOOTH_SHADING = 1,
-} PBVHFlags;
+typedef enum { PBVH_DYNTOPO_SMOOTH_SHADING = 1 } PBVHFlags;
 
 typedef struct PBVHBMeshLog PBVHBMeshLog;
 
@@ -204,6 +204,8 @@ struct PBVH {
 
   /* Used by DynTopo to invalidate the draw cache. */
   bool draw_cache_invalid;
+
+  struct PBVHGPUFormat *vbo_id;
 };
 
 /* pbvh.c */