PyAPI: Iniital gawain API for Python

Wraps vertex-format, vertex-buffer and batch's (enough for drawing).

Doesn't yet expose index-buffers or shaders.

source/blender/python/gawain/gwn_py_api.c

@@ -0,0 +1,63 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/python/gawain/gwn_py_api.c
+ *  \ingroup pygawain
+ *
+ * Experimental Python API, not considered public yet (called '_gawain'),
+ * we may re-expose as public later.
+ */
+
+#include <Python.h>
+
+#include "gawain/gwn_batch.h"
+#include "gawain/gwn_vertex_format.h"
+
+#include "gwn_py_api.h"
+#include "gwn_py_types.h"
+
+#include "BLI_utildefines.h"
+
+#include "../generic/python_utildefines.h"
+
+PyDoc_STRVAR(GWN_doc,
+"This module provides access to gawain drawing functions."
+);
+static struct PyModuleDef GWN_module_def = {
+	PyModuleDef_HEAD_INIT,
+	.m_name = "_gawain",  /* m_name */
+	.m_doc = GWN_doc,  /* m_doc */
+};
+
+PyObject *BPyInit_gawain(void)
+{
+	PyObject *sys_modules = PyThreadState_GET()->interp->modules;
+	PyObject *submodule;
+	PyObject *mod;
+
+	mod = PyModule_Create(&GWN_module_def);
+
+	/* _gawain.types */
+	PyModule_AddObject(mod, "types", (submodule = BPyInit_gawain_types()));
+	PyDict_SetItem(sys_modules, PyModule_GetNameObject(submodule), submodule);
+	Py_INCREF(submodule);
+
+	return mod;
+}