A lot of progress with canvas rendering, still far from working.

servers/visual/rendering_device.cpp

@@ -1,6 +1,13 @@
 #include "rendering_device.h"
 
-RenderingDevice::RenderingDevice()
-{
 
+RenderingDevice *RenderingDevice::singleton=NULL;
+
+RenderingDevice *RenderingDevice::get_singleton() {
+	return singleton;
+}
+
+RenderingDevice::RenderingDevice() {
+
+	singleton=this;
 }