[Bf-blender-cvs] [c6f8567f84f] temp-lineart-contained: LineArt: Fix LRT_ITER_ALL_LINES_BEGIN.

[YimingWu]

Commit: c6f8567f84fc5eb61bd0ab91e84c823b49b4d318
Author: YimingWu
Date:   Mon May 10 10:59:38 2021 +0800
Branches: temp-lineart-contained
https://developer.blender.org/rBc6f8567f84fc5eb61bd0ab91e84c823b49b4d318

LineArt: Fix LRT_ITER_ALL_LINES_BEGIN.

This handles when the first line list being empty.

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

M	source/blender/gpencil_modifiers/intern/lineart/lineart_intern.h

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

diff --git a/source/blender/gpencil_modifiers/intern/lineart/lineart_intern.h b/source/blender/gpencil_modifiers/intern/lineart/lineart_intern.h
index ce4b3bd6726..bec9b12403d 100644
--- a/source/blender/gpencil_modifiers/intern/lineart/lineart_intern.h
+++ b/source/blender/gpencil_modifiers/intern/lineart/lineart_intern.h
@@ -85,6 +85,21 @@ void lineart_count_and_print_render_buffer_memory(struct LineartRenderBuffer *rb
 #define LRT_ITER_ALL_LINES_BEGIN \
   LineartEdge *e, *next_e, **current_list; \
   e = rb->contours; \
+  if (!e) { \
+    e = rb->crease_lines; \
+  } \
+  if (!e) { \
+    e = rb->material_lines; \
+  } \
+  if (!e) { \
+    e = rb->edge_marks; \
+  } \
+  if (!e) { \
+    e = rb->intersection_lines; \
+  } \
+  if (!e) { \
+    e = rb->floating_lines; \
+  } \
   for (current_list = &rb->contours; e; e = next_e) { \
     next_e = e->next;