lib: Remove extra alloc + memcpy from bind wrappers

Both py_cr_mesh_bind_vertex_buf and py_cr_mesh_bind_faces allocated a
temporary buffer needlessly. These don't actually amount to much of
anything in the final runtime, the time delta before and after this
patch is dwarfed by the time we spend in Python trying to shuffle the
data into a suitable format.

bindings/cray_wrap.c

@@ -359,27 +359,16 @@ static PyObject *py_cr_mesh_bind_vertex_buf(PyObject *self, PyObject *args) {
 		return NULL;
 	}
 
-	// TODO: add checks
-	struct cr_vector *vertices = calloc(vec_count, sizeof(*vertices));
-	struct cr_vector *normals = calloc(nor_count, sizeof(*normals));
-	struct cr_coord *texcoords = calloc(tex_count, sizeof(*texcoords));
-	memcpy(vertices, vec_view.buf, vec_count * sizeof(*vertices));
-	memcpy(normals, nor_view.buf, nor_count * sizeof(*normals));
-	memcpy(texcoords, tex_view.buf, tex_count * sizeof(*texcoords));
-
 	struct cr_scene *s = PyCapsule_GetPointer(s_ext, "cray.cr_scene");
 	cr_mesh_bind_vertex_buf(s, mesh, (struct cr_vertex_buf_param){
-		.vertices = vertices,
+		.vertices = vec_view.buf,
 		.vertex_count = vec_count,
-		.normals = normals,
+		.normals = nor_view.buf,
 		.normal_count = nor_count,
-		.tex_coords = texcoords,
+		.tex_coords = tex_view.buf,
 		.tex_coord_count = tex_count
 	});
 
-	free(vertices);
-	free(normals);
-	free(texcoords);
 	Py_RETURN_NONE;
 }
 
@@ -412,15 +401,9 @@ static PyObject *py_cr_mesh_bind_faces(PyObject *self, PyObject *args) {
 		return NULL;
 	}
 
-	struct cr_face *faces = calloc(face_count, sizeof(*faces));
-	memcpy(faces, face_view.buf, face_count * sizeof(*faces));
-	// for (size_t i = 0; i < face_count; ++i) {
-	// 	dump_face(faces[i]);
-	// }
-
 	struct cr_scene *s = PyCapsule_GetPointer(s_ext, "cray.cr_scene");
-	cr_mesh_bind_faces(s, mesh, faces, face_count);
-	free(faces);
+	cr_mesh_bind_faces(s, mesh, face_view.buf, face_count);
+
 	Py_RETURN_NONE;
 }