DNA: initial DNA defaults support

This provides an API to access structs
with their members set to default values:

- DNA_struct_default_get(name)
- DNA_struct_default_alloc(name)

Currently this is only used for scene & view shading initialization,
eventually it can be used for RNA defaults and initializing
DNA struct members on file reading.

1 files changed, 62 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_view3d_defaults.h b/source/blender/makesdna/DNA_view3d_defaults.h
new file mode 100644
index 00000000000..2964e77a421
--- /dev/null
+++ b/source/blender/makesdna/DNA_view3d_defaults.h
@@ -0,0 +1,62 @@
+/*
+ * 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.
+ */
+
+/** \file
+ * \ingroup DNA
+ */
+
+#ifndef __DNA_VIEW3D_DEFAULTS_H__
+#define __DNA_VIEW3D_DEFAULTS_H__
+
+/* Struct members on own line. */
+/* clang-format off */
+
+/* -------------------------------------------------------------------- */
+/** \name Viewport Struct
+ * \{ */
+
+#define _DNA_DEFAULT_View3DShading \
+  { \
+    .type = OB_SOLID, \
+    .prev_type = OB_SOLID, \
+    .flag = V3D_SHADING_SPECULAR_HIGHLIGHT | V3D_SHADING_XRAY_WIREFRAME | \
+            V3D_SHADING_SCENE_LIGHTS_RENDER | V3D_SHADING_SCENE_WORLD_RENDER, \
+    .light = V3D_LIGHTING_STUDIO, \
+    .shadow_intensity = 0.5f, \
+    .xray_alpha = 0.5f, \
+    .xray_alpha_wire = 0.5f, \
+    .cavity_valley_factor = 1.0f, \
+    .cavity_ridge_factor = 1.0f, \
+    .cavity_type = V3D_SHADING_CAVITY_CURVATURE, \
+    .curvature_ridge_factor = 1.0f, \
+    .curvature_valley_factor = 1.0f, \
+    .single_color = {0.8f, 0.8f, 0.8f}, \
+    .background_color = {0.05f, 0.05f, 0.05f}, \
+    .studiolight_intensity = 1.0f, \
+  }
+
+#define _DNA_DEFAULT_View3DCursor \
+  { \
+    .rotation_mode = ROT_MODE_XYZ, \
+    .rotation_quaternion = {1, 0, 0, 0}, \
+    .rotation_axis = {0, 1, 0}, \
+  }
+
+/** \} */
+
+/* clang-format on */
+
+#endif /* __DNA_VIEW3D_DEFAULTS_H__ */