From 87c39f11231b165ce913673676f57d6a013c23c4 Mon Sep 17 00:00:00 2001
From: Sergey Sharybin <sergey.vfx@gmail.com>
Date: Tue, 2 Jul 2019 16:48:28 +0200
Subject: Fix T65798: Incorrect auto-tex space for Curves

There are several aspects to the fix:

- Always calculate bounding box for meshes and curves from dependency
  graph evaluation function.

  There is a reason why mesh was tagged for geometry update, so can not
  be spare here in attempts to avoid calculation.

- Copy bounding box and texture space to original object for active
  dependency graph.

  This matches object-level bounding box and allows to remove bounding
  box evaluation from RNA.
---
 source/blender/blenkernel/intern/curve.c | 16 ++++++++++++++--
 source/blender/blenkernel/intern/mesh.c  | 18 +++++++++++++++---
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/source/blender/blenkernel/intern/curve.c b/source/blender/blenkernel/intern/curve.c
index 5945fa4bf33..8a2450efa55 100644
--- a/source/blender/blenkernel/intern/curve.c
+++ b/source/blender/blenkernel/intern/curve.c
@@ -54,6 +54,7 @@
 #include "BKE_material.h"
 
 #include "DEG_depsgraph.h"
+#include "DEG_depsgraph_query.h"
 
 #include "CLG_log.h"
 
@@ -5431,8 +5432,19 @@ void BKE_curve_rect_from_textbox(const struct Curve *cu,
 void BKE_curve_eval_geometry(Depsgraph *depsgraph, Curve *curve)
 {
   DEG_debug_print_eval(depsgraph, __func__, curve->id.name, curve);
-  if (curve->bb == NULL || (curve->bb->flag & BOUNDBOX_DIRTY)) {
-    BKE_curve_texspace_calc(curve);
+  BKE_curve_texspace_calc(curve);
+  if (DEG_is_active(depsgraph)) {
+    Curve *curve_orig = (Curve *)DEG_get_original_id(&curve->id);
+    BoundBox *bb = curve->bb;
+    if (bb != NULL) {
+      if (curve_orig->bb == NULL) {
+        curve_orig->bb = MEM_mallocN(sizeof(*curve_orig->bb), __func__);
+      }
+      *curve_orig->bb = *bb;
+      copy_v3_v3(curve_orig->loc, curve->loc);
+      copy_v3_v3(curve_orig->size, curve->size);
+      copy_v3_v3(curve_orig->rot, curve->rot);
+    }
   }
 }
 
diff --git a/source/blender/blenkernel/intern/mesh.c b/source/blender/blenkernel/intern/mesh.c
index 755a8036e8e..e6fbc386b77 100644
--- a/source/blender/blenkernel/intern/mesh.c
+++ b/source/blender/blenkernel/intern/mesh.c
@@ -50,6 +50,7 @@
 #include "BKE_editmesh.h"
 
 #include "DEG_depsgraph.h"
+#include "DEG_depsgraph_query.h"
 
 enum {
   MESHCMP_DVERT_WEIGHTMISMATCH = 1,
@@ -1995,9 +1996,7 @@ void BKE_mesh_split_faces(Mesh *mesh, bool free_loop_normals)
 void BKE_mesh_eval_geometry(Depsgraph *depsgraph, Mesh *mesh)
 {
   DEG_debug_print_eval(depsgraph, __func__, mesh->id.name, mesh);
-  if (mesh->bb == NULL || (mesh->bb->flag & BOUNDBOX_DIRTY)) {
-    BKE_mesh_texspace_calc(mesh);
-  }
+  BKE_mesh_texspace_calc(mesh);
   /* Clear autospace flag in evaluated mesh, so that texspace does not get recomputed when bbox is
    * (e.g. after modifiers, etc.) */
   mesh->texflag &= ~ME_AUTOSPACE;
@@ -2009,4 +2008,17 @@ void BKE_mesh_eval_geometry(Depsgraph *depsgraph, Mesh *mesh)
     BKE_id_free(NULL, mesh->runtime.mesh_eval);
     mesh->runtime.mesh_eval = NULL;
   }
+  if (DEG_is_active(depsgraph)) {
+    Mesh *mesh_orig = (Mesh *)DEG_get_original_id(&mesh->id);
+    BoundBox *bb = mesh->bb;
+    if (bb != NULL) {
+      if (mesh_orig->bb == NULL) {
+        mesh_orig->bb = MEM_mallocN(sizeof(*mesh_orig->bb), __func__);
+      }
+      *mesh_orig->bb = *bb;
+      copy_v3_v3(mesh_orig->loc, mesh->loc);
+      copy_v3_v3(mesh_orig->size, mesh->size);
+      copy_v3_v3(mesh_orig->rot, mesh->rot);
+    }
+  }
 }
-- 
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