From 008b070aab3687d022a1b68ac4deb5cc82c8dd65 Mon Sep 17 00:00:00 2001
From: vlj <vljn@ovi.com>
Date: Fri, 28 Mar 2014 01:43:59 +0100
Subject: [PATCH] Properly clean GL buffers in instancing node.

---
 src/graphics/stkinstancedscenenode.cpp | 30 ++++++++++++++++++++++++++
 src/graphics/stkinstancedscenenode.hpp |  2 ++
 2 files changed, 32 insertions(+)

diff --git a/src/graphics/stkinstancedscenenode.cpp b/src/graphics/stkinstancedscenenode.cpp
index 47968679a..3004ea092 100644
--- a/src/graphics/stkinstancedscenenode.cpp
+++ b/src/graphics/stkinstancedscenenode.cpp
@@ -11,6 +11,36 @@ STKInstancedSceneNode::STKInstancedSceneNode(irr::scene::IMesh* mesh, ISceneNode
     setAutomaticCulling(0);
 }
 
+void STKInstancedSceneNode::cleanGL()
+{
+    for (u32 i = 0; i < GLmeshes.size(); ++i)
+    {
+        GLMesh mesh = GLmeshes[i];
+        if (!mesh.vertex_buffer)
+            continue;
+        if (mesh.vao_first_pass)
+            glDeleteVertexArrays(1, &(mesh.vao_first_pass));
+        if (mesh.vao_second_pass)
+            glDeleteVertexArrays(1, &(mesh.vao_second_pass));
+        if (mesh.vao_glow_pass)
+            glDeleteVertexArrays(1, &(mesh.vao_glow_pass));
+        if (mesh.vao_displace_pass)
+            glDeleteVertexArrays(1, &(mesh.vao_displace_pass));
+        if (mesh.vao_displace_mask_pass)
+            glDeleteVertexArrays(1, &(mesh.vao_displace_mask_pass));
+        if (mesh.vao_shadow_pass)
+            glDeleteVertexArrays(1, &(mesh.vao_shadow_pass));
+        glDeleteBuffers(1, &(mesh.vertex_buffer));
+        glDeleteBuffers(1, &(mesh.index_buffer));
+    }
+    glDeleteBuffers(1, &instances_vbo);
+}
+
+STKInstancedSceneNode::~STKInstancedSceneNode()
+{
+    cleanGL();
+}
+
 void STKInstancedSceneNode::createGLMeshes()
 {
     for (u32 i = 0; i<Mesh->getMeshBufferCount(); ++i)
diff --git a/src/graphics/stkinstancedscenenode.hpp b/src/graphics/stkinstancedscenenode.hpp
index 9293d860a..a2ca06fed 100644
--- a/src/graphics/stkinstancedscenenode.hpp
+++ b/src/graphics/stkinstancedscenenode.hpp
@@ -16,12 +16,14 @@ protected:
     bool isMaterialInitialized;
     void setFirstTimeMaterial();
     void initinstancedvaostate(GLMesh &mesh, GeometricMaterial GeoMat, ShadedMaterial ShadedMat);
+    void cleanGL();
     core::vector3df windDir;
 public:
     STKInstancedSceneNode(irr::scene::IMesh* mesh, ISceneNode* parent, irr::scene::ISceneManager* mgr, irr::s32 id,
         const irr::core::vector3df& position = irr::core::vector3df(0, 0, 0),
         const irr::core::vector3df& rotation = irr::core::vector3df(0, 0, 0),
         const irr::core::vector3df& scale = irr::core::vector3df(1.0f, 1.0f, 1.0f));
+    ~STKInstancedSceneNode();
     virtual void render();
     void addInstance(const core::vector3df &origin, const core::vector3df &orientation);
 };