Fix some RTT-related leaks

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@8503 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/graphics/irr_driver.cpp

@@ -1354,10 +1354,13 @@ bool IrrDriver::OnEvent(const irr::SEvent &event)
 /** Begins a rendering to a texture.
  *  \param dimension The size of the texture. 
  *  \param name Name of the texture.
+ *  \param persistent_texture Whether the created RTT texture should persist in
+ *                            memory after the RTTProvider is deleted
  */
 IrrDriver::RTTProvider::RTTProvider(const core::dimension2du &dimension, 
-                                    const std::string &name)
-{    
+                                    const std::string &name, bool persistent_texture)
+{
+    m_persistent_texture = persistent_texture;
     m_video_driver = irr_driver->getVideoDriver();
     m_render_target_texture = 
         m_video_driver->addRenderTargetTexture(dimension, 
@@ -1377,6 +1380,9 @@ IrrDriver::RTTProvider::RTTProvider(const core::dimension2du &dimension,
 IrrDriver::RTTProvider::~RTTProvider()
 {
     tearDownRTTScene();
+    
+    if (!m_persistent_texture)
+        irr_driver->removeTexture(m_render_target_texture);
 }   // ~RTTProvider
 
 // ----------------------------------------------------------------------------

src/graphics/irr_driver.hpp

@@ -194,6 +194,8 @@ public:
          *  in between beginRenderToTexture() and endRenderToTexture calls. */
         video::ITexture            *m_render_target_texture;
         
+        bool                        m_persistent_texture;
+        
         /** Main node of the RTT scene */
         scene::ISceneNode          *m_rtt_main_node;
         
@@ -206,7 +208,7 @@ public:
         
     public:
         RTTProvider(const core::dimension2du &dimension, 
-                    const std::string &name);
+                    const std::string &name, bool persistent_texture);
         
         ~RTTProvider();
         

src/guiengine/widgets/model_view_widget.cpp

@@ -150,7 +150,7 @@ void ModelViewWidget::update(float delta)
     {
         std::string name = "model view ";
         name += m_properties[PROP_ID].c_str();
-        m_rtt_provider = new IrrDriver::RTTProvider(core::dimension2d< u32 >(512, 512), name );
+        m_rtt_provider = new IrrDriver::RTTProvider(core::dimension2d< u32 >(512, 512), name, false);
         m_rtt_provider->setupRTTScene(m_models, m_model_location, m_model_scale, m_model_frames);
     }
     
@@ -184,3 +184,9 @@ void ModelViewWidget::setRotateTo(float targetAngle, float speed)
     m_rotation_target = targetAngle;
 }
 
+void ModelViewWidget::elementRemoved()
+{
+    delete m_rtt_provider;
+    m_rtt_provider = NULL;
+    IconButtonWidget::elementRemoved();
+}

src/guiengine/widgets/model_view_widget.hpp

@@ -71,6 +71,8 @@ namespace GUIEngine
         
         void update(float delta);
         
+        virtual void elementRemoved();
+        
         /** Disables any model rotation */
         void setRotateOff();
         

src/states_screens/race_gui_base.cpp

@@ -83,7 +83,7 @@ void RaceGUIBase::createMarkerTexture()
     IrrDriver::RTTProvider rttProvider(core::dimension2du(m_marker_rendered_size
                                                           *npower2,
                                                           m_marker_rendered_size),
-                                     "RaceGUI::markers");
+                                     "RaceGUI::markers", true);
     scene::ICameraSceneNode *camera = irr_driver->addCameraSceneNode();
     core::matrix4 projection;
     projection.buildProjectionMatrixOrthoLH((float)(m_marker_rendered_size*npower2), 

src/tracks/quad_graph.cpp

@@ -624,7 +624,7 @@ video::ITexture *QuadGraph::makeMiniMap(const core::dimension2du &dimension,
                                         const std::string &name,
                                         const video::SColor &fill_color)
 {
-    IrrDriver::RTTProvider rttProvider(dimension, name);
+    IrrDriver::RTTProvider rttProvider(dimension, name, true);
     video::SColor red(128, 255, 0, 0);
     createMesh(/*show_invisible part of the track*/ false,
                /*track_color*/    &fill_color,