From 07c67148e36d95ac185c553ceacbdb6896ae46ca Mon Sep 17 00:00:00 2001
From: Brecht Van Lommel <brechtvanlommel@gmail.com>
Date: Sat, 18 May 2019 11:32:52 +0200
Subject: 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.
---
 source/blender/collada/EffectExporter.cpp   | 11 -----------
 source/blender/collada/GeometryExporter.cpp | 10 ----------
 2 files changed, 21 deletions(-)

(limited to 'source/blender/collada')

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();
 }
 
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