Cleanup/Docs: Add comments to Mesh header, rearrange fields

Most of the fields in Mesh had no comments, or outdated misleading
comments. For example, "BMESH ONLY" referred to the BMesh project,
not the data structure. Given how much these structs are used, it should
save a lot of time to have proper comments.

I also rearranged the fields in mesh to have a more logical order. Now
the most important fields come first. In the process I was able to
remove 19 bytes of unnecessary padding (31->12). I just had to
change a `short` flag to `char`.

Differential Revision: https://developer.blender.org/D13454

1 files changed, 2 insertions, 3 deletions

diff --git a/source/blender/makesdna/DNA_curve_types.h b/source/blender/makesdna/DNA_curve_types.h
index 7230ac38f2f..dab43d16cbb 100644
--- a/source/blender/makesdna/DNA_curve_types.h
+++ b/source/blender/makesdna/DNA_curve_types.h
@@ -228,9 +228,8 @@ typedef struct Curve {
   /** Creation-time type of curve datablock. */
   short type;
 
-  /** Keep a short because of BKE_object_obdata_texspace_get(). */
-  short texflag;
-  char _pad0[6];
+  char texflag;
+  char _pad0[7];
   short twist_mode;
   float twist_smooth, smallcaps_scale;