From 3110f889a6181f5645f00269c343633daa5e5115 Mon Sep 17 00:00:00 2001
From: Martin Schultz <Martin.Schultz@rwth-aachen.de>
Date: Wed, 25 Apr 2018 14:05:17 +0200
Subject: [PATCH] fixed a problem with the lastDrawMode not being initialized
 when picking renderer is used at startup. fixes #1

---
 ObjectTypes/VolumeMeshObject/VolumeMeshNodeT.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/ObjectTypes/VolumeMeshObject/VolumeMeshNodeT.cc b/ObjectTypes/VolumeMeshObject/VolumeMeshNodeT.cc
index 7bfdb92..34534f8 100644
--- a/ObjectTypes/VolumeMeshObject/VolumeMeshNodeT.cc
+++ b/ObjectTypes/VolumeMeshObject/VolumeMeshNodeT.cc
@@ -1109,6 +1109,12 @@ void VolumeMeshNodeT<VolumeMeshT>::getRenderObjects(IRenderer* _renderer, GLStat
 
 template<class VolumeMeshT>
 void VolumeMeshNodeT<VolumeMeshT>::pick(GLState& _state, PickTarget _target) {
+    bool drawModeOverride = false;
+    if(lastDrawMode_ == DrawModes::NONE)  // no last drawmode so the picking renderer
+    {                                     // is probably calling this function for rendering
+      lastDrawMode_ = drawMode();
+      drawModeOverride = true;
+    }
 
     // save state
     bool clientStateEnabledVertexArray   = GLState::isClientStateEnabled(GL_VERTEX_ARRAY);
@@ -1215,6 +1221,9 @@ void VolumeMeshNodeT<VolumeMeshT>::pick(GLState& _state, PickTarget _target) {
 
     lastPickTarget_ = _target;
 
+    if(drawModeOverride)
+      lastDrawMode_ = DrawModes::NONE;
+
     // restore state
     if (clientStateEnabledVertexArray)
         GLState::enableClientState(GL_VERTEX_ARRAY);
-- 
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