1 files changed, 165 insertions, 0 deletions
diff --git a/source/blender/python/gpu/gpu_py_api.c b/source/blender/python/gpu/gpu_py_api.c
new file mode 100644
index 00000000000..f237561246a
--- /dev/null
+++ b/source/blender/python/gpu/gpu_py_api.c
@@ -0,0 +1,165 @@
+/*
+ * ***** 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/gpu/gpu_py_api.c
+ *  \ingroup bpygpu
+ *
+ * Experimental Python API, not considered public yet (called '_gpu'),
+ * we may re-expose as public later.
+ *
+ * - Use ``bpygpu_`` for local API.
+ * - Use ``BPyGPU`` for public API.
+ */
+
+#include <Python.h>
+
+#include "BLI_utildefines.h"
+
+#include "../generic/python_utildefines.h"
+
+#include "GPU_init_exit.h"
+#include "GPU_primitive.h"
+
+#include "gpu_py_matrix.h"
+#include "gpu_py_select.h"
+#include "gpu_py_types.h"
+
+#include "gpu_py_api.h" /* own include */
+
+
+/* -------------------------------------------------------------------- */
+
+/** \name Utils to invalidate functions
+ * \{ */
+
+bool bpygpu_is_initialized(void)
+{
+	if (!GPU_is_initialized()) {
+		PyErr_SetString(
+		        PyExc_SystemError,
+		        "GPU functions for drawing are not available in background mode");
+
+		return false;
+	}
+
+	return true;
+}
+
+/** \} */
+
+
+/* -------------------------------------------------------------------- */
+
+/** \name Primitive Type Utils
+ * \{ */
+
+int bpygpu_ParsePrimType(PyObject *o, void *p)
+{
+	Py_ssize_t mode_id_len;
+	const char *mode_id = _PyUnicode_AsStringAndSize(o, &mode_id_len);
+	if (mode_id == NULL) {
+		PyErr_Format(PyExc_ValueError,
+		             "expected a string, got %s",
+		             Py_TYPE(o)->tp_name);
+		return 0;
+	}
+#define MATCH_ID(id) \
+	if (mode_id_len == strlen(STRINGIFY(id))) { \
+		if (STREQ(mode_id, STRINGIFY(id))) { \
+			mode = GPU_PRIM_##id; \
+			goto success; \
+		} \
+	} ((void)0)
+
+	GPUPrimType mode;
+	MATCH_ID(POINTS);
+	MATCH_ID(LINES);
+	MATCH_ID(TRIS);
+	MATCH_ID(LINE_STRIP);
+	MATCH_ID(LINE_LOOP);
+	MATCH_ID(TRI_STRIP);
+	MATCH_ID(TRI_FAN);
+	MATCH_ID(LINE_STRIP_ADJ);
+
+#undef MATCH_ID
+	PyErr_Format(PyExc_ValueError,
+	             "unknown type literal: '%s'",
+	             mode_id);
+	return 0;
+
+success:
+	(*(GPUPrimType *)p) = mode;
+	return 1;
+}
+
+/** \} */
+
+
+/* -------------------------------------------------------------------- */
+
+/** \name GPU Module
+ * \{ */
+
+
+PyDoc_STRVAR(GPU_doc,
+"This module provides Python wrappers for the GPU implementation in Blender. "
+"Some higher level functions can be found in the `gpu_extras` module. "
+"\n\n"
+"Submodules:\n"
+"\n"
+".. toctree::\n"
+"   :maxdepth: 1\n"
+"\n"
+"   gpu.types.rst\n"
+"   gpu.shader.rst\n"
+"   gpu.matrix.rst\n"
+"   gpu.select.rst\n"
+"\n"
+);
+static struct PyModuleDef GPU_module_def = {
+	PyModuleDef_HEAD_INIT,
+	.m_name = "gpu",
+	.m_doc = GPU_doc,
+};
+
+PyObject *BPyInit_gpu(void)
+{
+	PyObject *sys_modules = PyImport_GetModuleDict();
+	PyObject *submodule;
+	PyObject *mod;
+
+	mod = PyModule_Create(&GPU_module_def);
+
+	PyModule_AddObject(mod, "types", (submodule = BPyInit_gpu_types()));
+	PyDict_SetItem(sys_modules, PyModule_GetNameObject(submodule), submodule);
+
+	PyModule_AddObject(mod, "matrix", (submodule = BPyInit_gpu_matrix()));
+	PyDict_SetItem(sys_modules, PyModule_GetNameObject(submodule), submodule);
+
+	PyModule_AddObject(mod, "select", (submodule = BPyInit_gpu_select()));
+	PyDict_SetItem(sys_modules, PyModule_GetNameObject(submodule), submodule);
+
+	PyModule_AddObject(mod, "shader", (submodule = BPyInit_gpu_shader()));
+	PyDict_SetItem(sys_modules, PyModule_GetNameObject(submodule), submodule);
+
+	return mod;
+}
+
+/** \} */