Client|Renderer: Added ModelRenderer to oversee GL2 model rendering

Work in progress: ModelRenderer owns the ModelDrawable instances
needed for drawing objects using 3D models. All available models are
loaded into memory when the assets become available. GL resources will
be allocated later, when the models need to be drawn.

"net.dengine.client.testmodel" contains a couple of test models for
development purposes.

doomsday/client/client.pro

@@ -284,6 +284,7 @@ DENG_HEADERS += \
     include/render/lightgrid.h \
     include/render/lumobj.h \
     include/render/materialcontext.h \
+    include/render/modelrenderer.h \
     include/render/projector.h \
     include/render/r_draw.h \
     include/render/r_main.h \
@@ -598,6 +599,7 @@ SOURCES += \
     src/render/lightdecoration.cpp \
     src/render/lightgrid.cpp \
     src/render/lumobj.cpp \
+    src/render/modelrenderer.cpp \
     src/render/projector.cpp \
     src/render/r_draw.cpp \
     src/render/r_fakeradio.cpp \

doomsday/client/include/render/modelrenderer.h

@@ -0,0 +1,39 @@
+/** @file modelrenderer.h  Model renderer.
+ *
+ * @authors Copyright (c) 2014 Jaakko Keränen <jaakko.keranen@iki.fi>
+ *
+ * @par License
+ * GPL: http://www.gnu.org/licenses/gpl.html
+ *
+ * <small>This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details. You should have received a copy of the GNU
+ * General Public License along with this program; if not, see:
+ * http://www.gnu.org/licenses</small>
+ */
+
+#ifndef DENG_CLIENT_MODELRENDERER_H
+#define DENG_CLIENT_MODELRENDERER_H
+
+#include <de/ModelDrawable>
+
+/**
+ * The model renderer prepares available model assets for drawing (using ModelDrawable),
+ * and keeps the set of needed ModelDrawable instances in memory.
+ *
+ * @ingroup render
+ */
+class ModelRenderer
+{
+public:
+    ModelRenderer();
+
+private:
+    DENG2_PRIVATE(d)
+};
+
+#endif // DENG_CLIENT_MODELRENDERER_H

doomsday/client/net.dengine.client.pack/testmodel.pack/Info

@@ -0,0 +1,8 @@
+title: Test Model
+version: 1.0
+license: GPL 3+
+tags: dev
+
+asset model.thing.possessed {
+    path = "boblampclean.md5mesh"
+}