[Bf-blender-cvs] [6b761c59d25] master: Fix: Empty id attribute on curve control points

[Hans Goudey]

Commit: 6b761c59d25855080de683d15837f31172745f43
Author: Hans Goudey
Date:   Wed Oct 20 17:45:14 2021 -0500
Branches: master
https://developer.blender.org/rB6b761c59d25855080de683d15837f31172745f43

Fix: Empty id attribute on curve control points

No virtual array should be returned instead of returning an empty span.

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

M	source/blender/blenkernel/intern/geometry_component_curve.cc

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

diff --git a/source/blender/blenkernel/intern/geometry_component_curve.cc b/source/blender/blenkernel/intern/geometry_component_curve.cc
index 2f2851b4fd4..f30ff2a70a7 100644
--- a/source/blender/blenkernel/intern/geometry_component_curve.cc
+++ b/source/blender/blenkernel/intern/geometry_component_curve.cc
@@ -1104,6 +1104,10 @@ template<typename T> class BuiltinPointAttributeProvider : public BuiltinAttribu
       return {};
     }
 
+    if (!this->exists(component)) {
+      return {};
+    }
+
     Span<SplinePtr> splines = curve->splines();
     if (splines.size() == 1) {
       return std::make_unique<fn::GVArray_For_GSpan>(get_span_(*splines.first()));
@@ -1125,6 +1129,10 @@ template<typename T> class BuiltinPointAttributeProvider : public BuiltinAttribu
       return {};
     }
 
+    if (!this->exists(component)) {
+      return {};
+    }
+
     MutableSpan<SplinePtr> splines = curve->splines();
     if (splines.size() == 1) {
       return std::make_unique<fn::GVMutableArray_For_GMutableSpan>(