This is important at several level, mainly for overrides currently.
Note that this also includes shape keys, since from RNA point of view
those are also 'embedded' (they are not editable, not linkable, ...).
This fixes the issue where sun shadowmaps needs a very big bias value to
make any difference.
The bias is now in world space and not dependant on shadow bounds.
Unfortunatelly this breaks compatibility with previous version and old
scene are likely to need user intervention to fix.
Also fixes the property range.
Fix T71661 EEVEE shadow from sun on incorrect face
The old layout of `PointerRNA` was confusing for historic reasons:
```
typedef struct PointerRNA {
struct {
void *data;
} id;
struct StructRNA *type;
void *data;
} PointerRNA;
```
This patch updates it to:
```
typedef struct PointerRNA {
struct ID *owner_id;
struct StructRNA *type;
void *data;
} PointerRNA;
```
Throughout the code base `id.data` was replaced with `owner_id`.
Furthermore, many explicit pointer type casts were added which
were implicit before. Some type casts to `ID *` were removed.
Reviewers: brecht, campbellbarton
Differential Revision: https://developer.blender.org/D5558
This is the angular diameter as seen from earth, which is between 0.526° and
0.545° in reality. Sharing the size with other light types did not make much
sense and meant the unit was unclear.
Differential Revision: https://developer.blender.org/D4819
