Workbench: SeeThrough draw option

Option to see through all meshes (transparency)

Works for OB_SOLID and OB_TEXTURED. Does not work for
V3D_SHADING_SHADOW.

TODO: Fresnel effect

1 files changed, 96 insertions, 0 deletions

diff --git a/source/blender/draw/engines/workbench/transparent_mode.c b/source/blender/draw/engines/workbench/transparent_mode.c
new file mode 100644
index 00000000000..c5d3db4b390
--- /dev/null
+++ b/source/blender/draw/engines/workbench/transparent_mode.c
@@ -0,0 +1,96 @@
+/*
+ * 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 transparent_mode.c
+ *  \ingroup draw_engine
+ *
+ * Simple engine for drawing color and/or depth.
+ * When we only need simple studio shaders.
+ */
+
+#include "DRW_render.h"
+
+#include "GPU_shader.h"
+
+#include "workbench_private.h"
+
+/* Functions */
+
+static void workbench_transparent_engine_init(void *vedata)
+{
+	WORKBENCH_Data *data = vedata;
+	workbench_forward_engine_init(data);
+}
+
+static void workbench_transparent_cache_init(void *vedata)
+{
+
+	WORKBENCH_Data *data = vedata;
+	workbench_forward_cache_init(data);
+}
+
+static void workbench_transparent_cache_populate(void *vedata, Object *ob)
+{
+	WORKBENCH_Data *data = vedata;
+	workbench_forward_cache_populate(data, ob);
+}
+
+static void workbench_transparent_cache_finish(void *vedata)
+{
+	WORKBENCH_Data *data = vedata;
+	workbench_forward_cache_finish(data);
+}
+
+static void workbench_transparent_draw_background(void *vedata)
+{
+	WORKBENCH_Data *data = vedata;
+	workbench_forward_draw_background(data);
+}
+
+static void workbench_transparent_draw_scene(void *vedata)
+{
+	WORKBENCH_Data *data = vedata;
+	workbench_forward_draw_scene(data);
+}
+
+static void workbench_transparent_engine_free(void)
+{
+	workbench_forward_engine_free();
+}
+
+static const DrawEngineDataSize workbench_data_size = DRW_VIEWPORT_DATA_SIZE(WORKBENCH_Data);
+
+DrawEngineType draw_engine_workbench_transparent = {
+	NULL, NULL,
+	N_("Workbench"),
+	&workbench_data_size,
+	&workbench_transparent_engine_init,
+	&workbench_transparent_engine_free,
+	&workbench_transparent_cache_init,
+	&workbench_transparent_cache_populate,
+	&workbench_transparent_cache_finish,
+	&workbench_transparent_draw_background,
+	&workbench_transparent_draw_scene,
+	NULL,
+	NULL,
+	NULL,
+};
+