Game Engine: Level of detail support and tools

Levels of detail can be added and modified in the object panel. The object
panel also contains new tools for generating levels of detail, setting up
levels of detail based on object names (useful for importing), and
clearing an object's level of detail settings. This is meant as a game
engine feature, though the level of details settings can be previewed in
the viewport.

Reviewed By: moguri, nexyon, brecht

Differential Revision: http://developer.blender.org/D109

1 files changed, 16 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_object_types.h b/source/blender/makesdna/DNA_object_types.h
index 9d07e046096..bff3ef75a5a 100644
--- a/source/blender/makesdna/DNA_object_types.h
+++ b/source/blender/makesdna/DNA_object_types.h
@@ -105,6 +105,13 @@ enum {
 	BOUNDBOX_DIRTY  = (1 << 1),
 };
 
+typedef struct LodLevel {
+	struct LodLevel *next, *prev;
+	struct Object *source;
+	int flags;
+	float distance;
+} LodLevel;
+
 typedef struct Object {
 	ID id;
 	struct AnimData *adt;		/* animation data (must be immediately after id for utilities to use it) */ 
@@ -279,6 +286,9 @@ typedef struct Object {
 
 	float ima_ofs[2];		/* offset for image empties */
 
+	ListBase lodlevels;		/* contains data for levels of detail */
+	LodLevel *currentlod;
+
 	/* Runtime valuated curve-specific data, not stored in the file */
 	struct CurveCache *curve_cache;
 } Object;
@@ -470,6 +480,12 @@ enum {
 	OB_BOUND_CAPSULE       = 7,
 };
 
+/* lod flags */
+enum {
+	OB_LOD_USE_MESH		= 1 << 0,
+	OB_LOD_USE_MAT		= 1 << 1,
+};
+
 
 /* **************** BASE ********************* */