Mesh: remove Double Sided lighting option, it does nothing in the new viewport

This is legacy option from fixed-function graphics hardware, where per-vertex
lighting meant this had a significant performance impact.

4 files changed, 5 insertions, 32 deletions

diff --git a/source/blender/collada/EffectExporter.cpp b/source/blender/collada/EffectExporter.cpp
index 279113f46d9..a6e75ba41a9 100644
--- a/source/blender/collada/EffectExporter.cpp
+++ b/source/blender/collada/EffectExporter.cpp
@@ -243,20 +243,9 @@ void EffectsExporter::operator()(Material *ma, Object *ob)
 
   // performs the actual writing
   ep.addProfileElements();
-  bool twoSided = false;
-  if (ob->type == OB_MESH && ob->data) {
-    Mesh *me = (Mesh *)ob->data;
-    if (me->flag & ME_TWOSIDED)
-      twoSided = true;
-  }
-  if (twoSided)
-    ep.addExtraTechniqueParameter("GOOGLEEARTH", "double_sided", 1);
   ep.addExtraTechniques(mSW);
 
   ep.closeProfile();
-  if (twoSided)
-    mSW->appendTextBlock(
-        "<extra><technique profile=\"MAX3D\"><double_sided>1</double_sided></technique></extra>");
   closeEffect();
 }
 
diff --git a/source/blender/collada/GeometryExporter.cpp b/source/blender/collada/GeometryExporter.cpp
index f9279538742..bda6fec70a8 100644
--- a/source/blender/collada/GeometryExporter.cpp
+++ b/source/blender/collada/GeometryExporter.cpp
@@ -126,11 +126,6 @@ void GeometryExporter::operator()(Object *ob)
 
   closeMesh();
 
-  if (me->flag & ME_TWOSIDED) {
-    mSW->appendTextBlock(
-        "<extra><technique profile=\"MAYA\"><double_sided>1</double_sided></technique></extra>");
-  }
-
   closeGeometry();
 
   if (this->export_settings->include_shapekeys) {
@@ -211,11 +206,6 @@ void GeometryExporter::export_key_mesh(Object *ob, Mesh *me, KeyBlock *kb)
 
   closeMesh();
 
-  if (me->flag & ME_TWOSIDED) {
-    mSW->appendTextBlock(
-        "<extra><technique profile=\"MAYA\"><double_sided>1</double_sided></technique></extra>");
-  }
-
   closeGeometry();
 }
 
diff --git a/source/blender/makesdna/DNA_mesh_types.h b/source/blender/makesdna/DNA_mesh_types.h
index 8f08b212d6d..f54c178f1d0 100644
--- a/source/blender/makesdna/DNA_mesh_types.h
+++ b/source/blender/makesdna/DNA_mesh_types.h
@@ -233,11 +233,11 @@ enum {
 
 /* me->flag */
 enum {
-  ME_FLAG_UNUSED_0 = 1 << 0, /* cleared */
-  ME_FLAG_UNUSED_1 = 1 << 1, /* cleared */
-  ME_TWOSIDED = 1 << 2,
-  ME_FLAG_UNUSED_3 = 1 << 3, /* cleared */
-  ME_FLAG_UNUSED_4 = 1 << 4, /* cleared */
+  ME_FLAG_UNUSED_0 = 1 << 0,     /* cleared */
+  ME_FLAG_UNUSED_1 = 1 << 1,     /* cleared */
+  ME_FLAG_DEPRECATED_2 = 1 << 2, /* deprecated */
+  ME_FLAG_UNUSED_3 = 1 << 3,     /* cleared */
+  ME_FLAG_UNUSED_4 = 1 << 4,     /* cleared */
   ME_AUTOSMOOTH = 1 << 5,
   ME_FLAG_UNUSED_6 = 1 << 6, /* cleared */
   ME_FLAG_UNUSED_7 = 1 << 7, /* cleared */
diff --git a/source/blender/makesrna/intern/rna_mesh.c b/source/blender/makesrna/intern/rna_mesh.c
index 0b4056121b3..4082222340a 100644
--- a/source/blender/makesrna/intern/rna_mesh.c
+++ b/source/blender/makesrna/intern/rna_mesh.c
@@ -3015,12 +3015,6 @@ static void rna_def_mesh(BlenderRNA *brna)
   RNA_def_property_boolean_funcs(prop, "rna_Mesh_has_custom_normals_get", NULL);
   RNA_define_verify_sdna(true);
 
-  prop = RNA_def_property(srna, "show_double_sided", PROP_BOOLEAN, PROP_NONE);
-  RNA_def_property_boolean_sdna(prop, NULL, "flag", ME_TWOSIDED);
-  RNA_def_property_ui_text(
-      prop, "Double Sided", "Display the mesh with double or single sided lighting (OpenGL only)");
-  RNA_def_property_update(prop, 0, "rna_Mesh_update_data");
-
   prop = RNA_def_property(srna, "texco_mesh", PROP_POINTER, PROP_NONE);
   RNA_def_property_pointer_sdna(prop, NULL, "texcomesh");
   RNA_def_property_flag(prop, PROP_EDITABLE);