From 095be9811eaccd92cee156b4c486fb92b77cdcd2 Mon Sep 17 00:00:00 2001
From: Jon Bergli Heier <snakebite@jvnv.net>
Date: Mon, 4 Apr 2011 00:01:39 +0200
Subject: Threaded VBO creation.

A secondary memory-mapped VBO is filled in a separate thread, which
replaces the main VBO when work is done.
---
 quadtree.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'quadtree.h')

diff --git a/quadtree.h b/quadtree.h
index 951a98e..b927dee 100644
--- a/quadtree.h
+++ b/quadtree.h
@@ -3,8 +3,18 @@
 
 #include "vector.h"
 
+#include <boost/thread.hpp>
+
 class Quadtree {
 	public:
+
+		struct UpdateThread {
+			Quadtree *tree;
+			float *buffer;
+			UpdateThread(Quadtree *t, float *b);
+			void operator()();
+		};
+
 		struct QuadNode {
 			Quadtree *tree;
 			QuadNode *parent;
@@ -29,9 +39,15 @@ class Quadtree {
 		};
 
 		float *heights;
+		float *thread_buffer;
+		size_t buf_size;
+		bool thread_done, thread_running;
+		boost::mutex vbo_lock;
+		boost::mutex node_lock;
 		int width, height, levels;
 		float init_time;
 		QuadNode *root;
+		unsigned int temp_vbo;
 		unsigned int vbo_object;
 		unsigned int nodes;
 		unsigned int vertices;
@@ -43,6 +59,7 @@ class Quadtree {
 		void create_nodes(int levels);
 		unsigned int count_nodes();
 		void make_vbo();
+		void update_vbo();
 		QuadNode *find(float x, float y, int level = -1);
 		QuadNode *get_left(QuadNode *node);
 		QuadNode *get_right(QuadNode *node);
-- 
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