1 files changed, 131 insertions, 0 deletions
diff --git a/source/blender/editors/manipulator_library/manipulator_draw_utils.c b/source/blender/editors/manipulator_library/manipulator_draw_utils.c
new file mode 100644
index 00000000000..430841311aa
--- /dev/null
+++ b/source/blender/editors/manipulator_library/manipulator_draw_utils.c
@@ -0,0 +1,131 @@
+/*
+ * ***** 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.
+ *
+ * The Original Code is Copyright (C) 2014 Blender Foundation.
+ * All rights reserved.
+ *
+ * Contributor(s): Blender Foundation
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file manipulator_draw_utils.c
+ *  \ingroup wm
+ */
+
+#include "BLI_listbase.h"
+#include "BLI_ghash.h"
+#include "BLI_math.h"
+#include "BLI_string.h"
+#include "BLI_string_utils.h"
+
+#include "BKE_context.h"
+
+#include "ED_screen.h"
+#include "ED_view3d.h"
+
+#include "GPU_batch.h"
+#include "GPU_glew.h"
+#include "GPU_immediate.h"
+
+#include "MEM_guardedalloc.h"
+
+#include "RNA_access.h"
+
+#include "WM_api.h"
+#include "WM_types.h"
+
+/* only for own init/exit calls (wm_manipulatortype_init/wm_manipulatortype_free) */
+#include "wm.h"
+
+/* own includes */
+#include "manipulator_library_intern.h"
+
+/**
+ * Main draw call for ManipulatorGeomInfo data
+ */
+void wm_manipulator_geometryinfo_draw(const ManipulatorGeomInfo *info, const bool select, const float color[4])
+{
+	/* TODO store the Batches inside the ManipulatorGeomInfo and updated it when geom changes
+	 * So we don't need to re-created and discard it every time */
+
+	const bool use_lighting = true || (!select && ((U.manipulator_flag & USER_MANIPULATOR_SHADED) != 0));
+	Gwn_VertBuf *vbo;
+	Gwn_IndexBuf *el;
+	Gwn_Batch *batch;
+	Gwn_IndexBufBuilder elb = {0};
+
+	Gwn_VertFormat format = {0};
+	uint pos_id = GWN_vertformat_attr_add(&format, "pos", GWN_COMP_F32, 3, GWN_FETCH_FLOAT);
+	uint nor_id;
+
+	if (use_lighting) {
+		nor_id = GWN_vertformat_attr_add(&format, "nor", GWN_COMP_I16, 3, GWN_FETCH_INT_TO_FLOAT_UNIT);
+	}
+
+	/* Elements */
+	GWN_indexbuf_init(&elb, GWN_PRIM_TRIS, info->ntris, info->nverts);
+	for (int i = 0; i < info->ntris; ++i) {
+		const unsigned short *idx = &info->indices[i * 3];
+		GWN_indexbuf_add_tri_verts(&elb, idx[0], idx[1], idx[2]);
+	}
+	el = GWN_indexbuf_build(&elb);
+
+	vbo = GWN_vertbuf_create_with_format(&format);
+	GWN_vertbuf_data_alloc(vbo, info->nverts);
+
+	GWN_vertbuf_attr_fill(vbo, pos_id, info->verts);
+
+	if (use_lighting) {
+		/* Normals are expected to be smooth. */
+		GWN_vertbuf_attr_fill(vbo, nor_id, info->normals);
+	}
+
+	batch = GWN_batch_create_ex(GWN_PRIM_TRIS, vbo, el, GWN_BATCH_OWNS_VBO | GWN_BATCH_OWNS_INDEX);
+	GWN_batch_program_set_builtin(batch, GPU_SHADER_3D_UNIFORM_COLOR);
+
+	GWN_batch_uniform_4fv(batch, "color", color);
+
+	/* We may want to re-visit this, for now disable
+	 * since it causes issues leaving the GL state modified. */
+#if 0
+	glEnable(GL_CULL_FACE);
+	glEnable(GL_DEPTH_TEST);
+#endif
+
+	GWN_batch_draw(batch);
+
+#if 0
+	glDisable(GL_DEPTH_TEST);
+	glDisable(GL_CULL_FACE);
+#endif
+
+
+	GWN_batch_discard(batch);
+}
+
+void wm_manipulator_vec_draw(
+        const float color[4], const float (*verts)[3], uint vert_count,
+        uint pos, uint primitive_type)
+{
+	immUniformColor4fv(color);
+	immBegin(primitive_type, vert_count);
+	for (int i = 0; i < vert_count; i++) {
+		immVertex3fv(pos, verts[i]);
+	}
+	immEnd();
+}