1 files changed, 71 insertions, 0 deletions
diff --git a/source/blender/blenkernel/BKE_subdiv_modifier.h b/source/blender/blenkernel/BKE_subdiv_modifier.h
new file mode 100644
index 00000000000..94068613101
--- /dev/null
+++ b/source/blender/blenkernel/BKE_subdiv_modifier.h
@@ -0,0 +1,71 @@
+/*
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2021 by Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup bke
+ */
+
+#pragma once
+
+#include "BLI_sys_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct Mesh;
+struct Object;
+struct Scene;
+struct Subdiv;
+struct SubdivSettings;
+struct SubsurfModifierData;
+
+void BKE_subsurf_modifier_subdiv_settings_init(struct SubdivSettings *settings,
+                                               const struct SubsurfModifierData *smd,
+                                               const bool use_render_params);
+
+/* If skip_check_is_last is true, we assume that the modifier passed is the last enabled modifier
+ * in the stack. */
+bool BKE_subsurf_modifier_can_do_gpu_subdiv_ex(const struct Scene *scene,
+                                               const struct Object *ob,
+                                               const struct SubsurfModifierData *smd,
+                                               int required_mode,
+                                               bool skip_check_is_last);
+
+bool BKE_subsurf_modifier_can_do_gpu_subdiv(const struct Scene *scene,
+                                            const struct Object *ob,
+                                            const int required_mode);
+
+extern void (*BKE_subsurf_modifier_free_gpu_cache_cb)(struct Subdiv *subdiv);
+
+struct Subdiv *BKE_subsurf_modifier_subdiv_descriptor_ensure(
+    const struct SubsurfModifierData *smd,
+    const struct SubdivSettings *subdiv_settings,
+    const struct Mesh *mesh,
+    const bool for_draw_code);
+
+struct SubsurfRuntimeData *BKE_subsurf_modifier_ensure_runtime(struct SubsurfModifierData *smd);
+
+/* Return the #ModifierMode required for the evaluation of the subsurf modifier, which should be
+ * used to check if the modifier is enabled. */
+int BKE_subsurf_modifier_eval_required_mode(bool is_final_render, bool is_edit_mode);
+
+#ifdef __cplusplus
+}
+#endif