From 1c83354c63a334a57118579d653e642524f23fce Mon Sep 17 00:00:00 2001
From: Brecht Van Lommel <brecht@blender.org>
Date: Thu, 23 Jun 2022 16:00:43 +0200
Subject: Fix T99028: crash deleting file output node with color management
 override

One case of copying image formats was not properly using BKE_image_format_copy.
To fix this for existing .blend file we need to do versioning, ensuring the curve
mapping is properly copied.
---
 source/blender/blenloader/intern/versioning_300.c | 53 +++++++++++++++++++++++
 1 file changed, 53 insertions(+)

(limited to 'source/blender/blenloader')

diff --git a/source/blender/blenloader/intern/versioning_300.c b/source/blender/blenloader/intern/versioning_300.c
index eac27bc57ed..844354c8bc3 100644
--- a/source/blender/blenloader/intern/versioning_300.c
+++ b/source/blender/blenloader/intern/versioning_300.c
@@ -46,6 +46,7 @@
 #include "BKE_asset.h"
 #include "BKE_attribute.h"
 #include "BKE_collection.h"
+#include "BKE_colortools.h"
 #include "BKE_curve.h"
 #include "BKE_data_transfer.h"
 #include "BKE_deform.h"
@@ -1620,6 +1621,31 @@ static void versioning_replace_legacy_combined_and_separate_color_nodes(bNodeTre
   }
 }
 
+static void version_fix_image_format_copy(Main *bmain, ImageFormatData *format)
+{
+  /* Fix bug where curves in image format were not properly copied to file output
+   * node, incorrectly sharing a pointer with the scene settings. Copy the data
+   * structure now as it should have been done in the first place. */
+  if (format->view_settings.curve_mapping) {
+    LISTBASE_FOREACH (Scene *, scene, &bmain->scenes) {
+      if (format != &scene->r.im_format && ELEM(format->view_settings.curve_mapping,
+                                                scene->view_settings.curve_mapping,
+                                                scene->r.im_format.view_settings.curve_mapping)) {
+        format->view_settings.curve_mapping = BKE_curvemapping_copy(
+            format->view_settings.curve_mapping);
+        break;
+      }
+    }
+
+    /* Remove any invalid curves with missing data. */
+    if (format->view_settings.curve_mapping->cm[0].curve == NULL) {
+      BKE_curvemapping_free(format->view_settings.curve_mapping);
+      format->view_settings.curve_mapping = NULL;
+      format->view_settings.flag &= ~COLORMANAGE_VIEW_USE_CURVES;
+    }
+  }
+}
+
 /* NOLINTNEXTLINE: readability-function-size */
 void blo_do_versions_300(FileData *fd, Library *UNUSED(lib), Main *bmain)
 {
@@ -3112,6 +3138,33 @@ void blo_do_versions_300(FileData *fd, Library *UNUSED(lib), Main *bmain)
     }
   }
 
+  if (!MAIN_VERSION_ATLEAST(bmain, 303, 4)) {
+    FOREACH_NODETREE_BEGIN (bmain, ntree, id) {
+      if (ntree->type == NTREE_COMPOSIT) {
+        LISTBASE_FOREACH (bNode *, node, &ntree->nodes) {
+          if (node->type == CMP_NODE_OUTPUT_FILE) {
+            LISTBASE_FOREACH (bNodeSocket *, sock, &node->inputs) {
+              if (sock->storage) {
+                NodeImageMultiFileSocket *sockdata = (NodeImageMultiFileSocket *)sock->storage;
+                version_fix_image_format_copy(bmain, &sockdata->format);
+              }
+            }
+
+            if (node->storage) {
+              NodeImageMultiFile *nimf = (NodeImageMultiFile *)node->storage;
+              version_fix_image_format_copy(bmain, &nimf->format);
+            }
+          }
+        }
+      }
+    }
+    FOREACH_NODETREE_END;
+
+    LISTBASE_FOREACH (Scene *, scene, &bmain->scenes) {
+      version_fix_image_format_copy(bmain, &scene->r.im_format);
+    }
+  }
+
   /**
    * Versioning code until next subversion bump goes here.
    *
-- 
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