Clay Engine: Started Armature drawing

This should give the overall direction to whom wants to finish it.

- Renamed EDIT mode engine to EDIT_MESH mode engine
- Introduce EDIT_ARMATURE mode engine
- Started to port legacy drawarmature.c to draw_armature.c

1 files changed, 119 insertions, 0 deletions

diff --git a/source/blender/draw/modes/edit_mesh_mode.c b/source/blender/draw/modes/edit_mesh_mode.c
new file mode 100644
index 00000000000..ec19a466a13
--- /dev/null
+++ b/source/blender/draw/modes/edit_mesh_mode.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2016, Blender Foundation.
+ *
+ * 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.
+ *
+ * Contributor(s): Blender Institute
+ *
+ */
+
+/** \file blender/draw/modes/edit_mesh_mode.c
+ *  \ingroup draw
+ */
+
+#include "DRW_engine.h"
+#include "DRW_render.h"
+
+#include "draw_mode_pass.h"
+
+#include "edit_mesh_mode.h"
+
+/* keep it under MAX_PASSES */
+typedef struct EDIT_MESH_PassList{
+	struct DRWPass *non_meshes_pass;
+	struct DRWPass *ob_center_pass;
+	struct DRWPass *wire_outline_pass;
+	struct DRWPass *depth_pass_hidden_wire;
+} EDIT_MESH_PassList;
+
+static DRWShadingGroup *depth_shgrp_hidden_wire;
+
+void EDIT_MESH_cache_init(void)
+{
+	EDIT_MESH_PassList *psl = DRW_mode_pass_list_get();
+	static struct GPUShader *depth_sh;
+
+	if (!depth_sh) {
+		depth_sh = DRW_shader_create_3D_depth_only();
+	}
+
+	psl->depth_pass_hidden_wire = DRW_pass_create("Depth Pass Hidden Wire", DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS | DRW_STATE_CULL_BACK);
+	depth_shgrp_hidden_wire = DRW_shgroup_create(depth_sh, psl->depth_pass_hidden_wire);
+
+	DRW_mode_passes_setup(NULL,
+	                      NULL,
+	                      &psl->wire_outline_pass,
+	                      &psl->non_meshes_pass,
+	                      &psl->ob_center_pass,
+	                      NULL,
+	                      NULL);
+}
+
+void EDIT_MESH_cache_populate(Object *ob)
+{
+	struct Batch *geom;
+
+	CollectionEngineSettings *ces_mode_ed = BKE_object_collection_engine_get(ob, COLLECTION_MODE_EDIT, "");
+	bool do_occlude_wire = BKE_collection_engine_property_value_get_bool(ces_mode_ed, "show_occlude_wire");
+
+	switch (ob->type) {
+		case OB_MESH:
+			geom = DRW_cache_surface_get(ob);
+			if (do_occlude_wire) {
+				DRW_shgroup_call_add(depth_shgrp_hidden_wire, geom, ob->obmat);
+				DRW_shgroup_wire_outline(ob, true, false, true);
+			}
+			break;
+		case OB_LAMP:
+			DRW_shgroup_lamp(ob);
+			break;
+		case OB_CAMERA:
+		case OB_EMPTY:
+			DRW_shgroup_empty(ob);
+			break;
+		case OB_SPEAKER:
+			DRW_shgroup_speaker(ob);
+			break;
+		case OB_ARMATURE:
+			DRW_shgroup_armature_object(ob);
+			break;
+		default:
+			break;
+	}
+
+	DRW_shgroup_object_center(ob);
+	DRW_shgroup_relationship_lines(ob);
+}
+
+void EDIT_MESH_cache_finish(void)
+{
+	/* Do nothing */
+}
+
+void EDIT_MESH_draw(void)
+{
+	EDIT_MESH_PassList *psl = DRW_mode_pass_list_get();
+
+	DRW_draw_pass(psl->depth_pass_hidden_wire);
+	DRW_draw_pass(psl->wire_outline_pass);
+	DRW_draw_pass(psl->non_meshes_pass);
+	DRW_draw_pass(psl->ob_center_pass);
+}
+
+void EDIT_MESH_collection_settings_create(CollectionEngineSettings *ces)
+{
+	BLI_assert(ces);
+	BKE_collection_engine_property_add_int(ces, "show_occlude_wire", false);
+}