GPencil: Fix unreported missing material onion filter

This feature was removed by error during the refactor done in draw engine.

Differential Revision: https://developer.blender.org/D8082

4 files changed, 6 insertions, 4 deletions

diff --git a/source/blender/draw/engines/gpencil/gpencil_engine.c b/source/blender/draw/engines/gpencil/gpencil_engine.c
index 16416596784..f658356c1b4 100644
--- a/source/blender/draw/engines/gpencil/gpencil_engine.c
+++ b/source/blender/draw/engines/gpencil/gpencil_engine.c
@@ -493,8 +493,10 @@ static void gpencil_stroke_cache_populate(bGPDlayer *gpl,
                    (!iter->pd->simplify_fill) && ((gps->flag & GP_STROKE_NOFILL) == 0);
 
   bool only_lines = gpl && gpf && gpl->actframe != gpf && iter->pd->use_multiedit_lines_only;
+  bool hide_onion = gpl && gpf && gpf->runtime.onion_id != 0 &&
+                    ((gp_style->flag & GP_MATERIAL_HIDE_ONIONSKIN) != 0);
 
-  if (hide_material || (!show_stroke && !show_fill) || only_lines) {
+  if (hide_material || (!show_stroke && !show_fill) || only_lines || hide_onion) {
     return;
   }
 
diff --git a/source/blender/editors/gpencil/drawgpencil.c b/source/blender/editors/gpencil/drawgpencil.c
index 6d41e9bddbe..3aff943a093 100644
--- a/source/blender/editors/gpencil/drawgpencil.c
+++ b/source/blender/editors/gpencil/drawgpencil.c
@@ -316,7 +316,7 @@ static void gp_draw_strokes(tGPDdraw *tgpw)
 
     if ((gp_style == NULL) || (gp_style->flag & GP_MATERIAL_HIDE) ||
         /* if onion and ghost flag do not draw*/
-        (tgpw->onion && (gp_style->flag & GP_MATERIAL_ONIONSKIN))) {
+        (tgpw->onion && (gp_style->flag & GP_MATERIAL_HIDE_ONIONSKIN))) {
       continue;
     }
 
diff --git a/source/blender/makesdna/DNA_material_types.h b/source/blender/makesdna/DNA_material_types.h
index 357c3260121..6a4ec65318b 100644
--- a/source/blender/makesdna/DNA_material_types.h
+++ b/source/blender/makesdna/DNA_material_types.h
@@ -112,7 +112,7 @@ typedef enum eMaterialGPencilStyle_Flag {
   /* protected from further editing */
   GP_MATERIAL_LOCKED = (1 << 2),
   /* do onion skinning */
-  GP_MATERIAL_ONIONSKIN = (1 << 3),
+  GP_MATERIAL_HIDE_ONIONSKIN = (1 << 3),
   /* clamp texture */
   GP_MATERIAL_TEX_CLAMP = (1 << 4),
   /* mix fill texture */
diff --git a/source/blender/makesrna/intern/rna_material.c b/source/blender/makesrna/intern/rna_material.c
index 5191869be3a..5d57a7b58f6 100644
--- a/source/blender/makesrna/intern/rna_material.c
+++ b/source/blender/makesrna/intern/rna_material.c
@@ -542,7 +542,7 @@ static void rna_def_material_greasepencil(BlenderRNA *brna)
   RNA_def_property_update(prop, NC_GPENCIL | ND_SHADING, "rna_MaterialGpencil_update");
 
   prop = RNA_def_property(srna, "ghost", PROP_BOOLEAN, PROP_NONE);
-  RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_MATERIAL_ONIONSKIN);
+  RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_MATERIAL_HIDE_ONIONSKIN);
   RNA_def_property_ui_icon(prop, ICON_GHOST_ENABLED, 0);
   RNA_def_property_ui_text(
       prop, "Show in Ghosts", "Display strokes using this color when showing onion skins");