GPencil: Refactor of Draw Engine, Vertex Paint and all internal functions

This commit is a full refactor of the grease pencil modules including Draw Engine, Modifiers, VFX, depsgraph update, improvements in operators and conversion of Sculpt and Weight paint tools to real brushes.

Also, a huge code cleanup has been done at all levels.

Thanks to @fclem for his work and yo @pepeland and @mendio for the testing and help in the development.

Differential Revision: https://developer.blender.org/D6293

1 files changed, 8 insertions, 19 deletions

diff --git a/source/blender/blenkernel/intern/context.c b/source/blender/blenkernel/intern/context.c
index 48985932d87..b2c551a1752 100644
--- a/source/blender/blenkernel/intern/context.c
+++ b/source/blender/blenkernel/intern/context.c
@@ -1124,6 +1124,9 @@ enum eContextObjectMode CTX_data_mode_enum_ex(const Object *obedit,
       else if (object_mode & OB_MODE_WEIGHT_GPENCIL) {
         return CTX_MODE_WEIGHT_GPENCIL;
       }
+      else if (object_mode & OB_MODE_VERTEX_GPENCIL) {
+        return CTX_MODE_VERTEX_GPENCIL;
+      }
     }
   }
 
@@ -1140,25 +1143,11 @@ enum eContextObjectMode CTX_data_mode_enum(const bContext *C)
 /* would prefer if we can use the enum version below over this one - Campbell */
 /* must be aligned with above enum  */
 static const char *data_mode_strings[] = {
-    "mesh_edit",
-    "curve_edit",
-    "surface_edit",
-    "text_edit",
-    "armature_edit",
-    "mball_edit",
-    "lattice_edit",
-    "posemode",
-    "sculpt_mode",
-    "weightpaint",
-    "vertexpaint",
-    "imagepaint",
-    "particlemode",
-    "objectmode",
-    "greasepencil_paint",
-    "greasepencil_edit",
-    "greasepencil_sculpt",
-    "greasepencil_weight",
-    NULL,
+    "mesh_edit",           "curve_edit",          "surface_edit",        "text_edit",
+    "armature_edit",       "mball_edit",          "lattice_edit",        "posemode",
+    "sculpt_mode",         "weightpaint",         "vertexpaint",         "imagepaint",
+    "particlemode",        "objectmode",          "greasepencil_paint",  "greasepencil_edit",
+    "greasepencil_sculpt", "greasepencil_weight", "greasepencil_vertex", NULL,
 };
 BLI_STATIC_ASSERT(ARRAY_SIZE(data_mode_strings) == CTX_MODE_NUM + 1,
                   "Must have a string for each context mode")