[Bf-blender-cvs] [4769a733e7f] asset-greasepencil: GPencil: Duplicate material array to temp object

[Antonio Vazquez]

Commit: 4769a733e7f68cbae33816636901de8e79b308ef
Author: Antonio Vazquez
Date:   Fri Jul 9 19:26:10 2021 +0200
Branches: asset-greasepencil
https://developer.blender.org/rB4769a733e7f68cbae33816636901de8e79b308ef

GPencil: Duplicate material array to temp object

This is used to get a full color preview

===================================================================

M	source/blender/editors/render/render_preview.c

===================================================================

diff --git a/source/blender/editors/render/render_preview.c b/source/blender/editors/render/render_preview.c
index 02f8a40a0b7..a4eae479de2 100644
--- a/source/blender/editors/render/render_preview.c
+++ b/source/blender/editors/render/render_preview.c
@@ -886,8 +886,12 @@ static Scene *gpencil_preview_scene_create(const struct ObjectPreviewData *previ
                                             "preview_object",
                                             preview_data->datablock,
                                             false);
-
   BLI_assert(ob_temp != NULL);
+  /* Copy the materials to get full color previews. */
+  const short *materials_len_p = BKE_id_material_len_p(preview_data->datablock);
+  if (materials_len_p && *materials_len_p > 0) {
+    BKE_object_materials_test(preview_data->pr_main, ob_temp, preview_data->datablock);
+  }
 
   Object *camera_object = object_preview_camera_create(preview_data->pr_main, view_layer, ob_temp);