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, 4 insertions, 2 deletions

diff --git a/source/blender/makesrna/intern/rna_ui_api.c b/source/blender/makesrna/intern/rna_ui_api.c
index 527df695f5b..8b112031ada 100644
--- a/source/blender/makesrna/intern/rna_ui_api.c
+++ b/source/blender/makesrna/intern/rna_ui_api.c
@@ -152,8 +152,10 @@ static void rna_uiItemR_with_popover(uiLayout *layout,
     RNA_warning("property not found: %s.%s", RNA_struct_identifier(ptr->type), propname);
     return;
   }
-  if (RNA_property_type(prop) != PROP_ENUM) {
-    RNA_warning("property is not an enum: %s.%s", RNA_struct_identifier(ptr->type), propname);
+  if ((RNA_property_type(prop) != PROP_ENUM) &&
+      !ELEM(RNA_property_subtype(prop), PROP_COLOR, PROP_COLOR_GAMMA)) {
+    RNA_warning(
+        "property is not an enum or color: %s.%s", RNA_struct_identifier(ptr->type), propname);
     return;
   }
   int flag = 0;