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Fix #114582: Replace unknown node types with an 'undefined' node #114783

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Lukas Tönne merged 5 commits from LukasTonne/blender:replace-unknown-node-types into blender-v3.3-release 2023-11-13 16:20:51 +01:00
Conversation 3 Commits 5 Files Changed 1 +35
Lukas Tönne commented 2023-11-13 12:00:51 +01:00
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When loading an unknown node type from a newer Blender version, the node
storage data cannot be properly loaded. Re-saving the file will then
crash if saving with the same node type idname, since new Blender
versions cannot find the expected storage data.

Loading in older versions should replace unknown node types with a dummy
"Undefined" node that will get loaded as NodeTypeUndefined in newer
versions as well. Custom node types are exempted from this since they
store all data as generic ID properties and can always be fully
serialized.

When loading an unknown node type from a newer Blender version, the node storage data cannot be properly loaded. Re-saving the file will then crash if saving with the same node type idname, since new Blender versions cannot find the expected storage data. Loading in older versions should replace unknown node types with a dummy "Undefined" node that will get loaded as `NodeTypeUndefined` in newer versions as well. Custom node types are exempted from this since they store all data as generic ID properties and can always be fully serialized.
❤️ 1
Lukas Tönne added 1 commit 2023-11-13 12:01:04 +01:00
3f668072ee Fix #114582: Replace unknown node types with an 'undefined' node. 
When loading an unknown node type from a newer Blender version, the node
storage data cannot be properly loaded. Re-saving the file will then
crash if saving with the same node type idname, since new Blender
versions cannot find the expected storage data.

Loading in older versions should replace unknown node types with a dummy
"Undefined" node that will get loaded as `NodeTypeUndefined` in newer
versions as well. Custom node types are exempted from this since they
store all data as generic ID properties and can always be fully
serialized.
Lukas Tönne commented 2023-11-13 12:02:11 +01:00
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This should be ported to 3.6 LTS and 4.0.

This should be ported to 3.6 LTS and 4.0.
Lukas Tönne requested review from Brecht Van Lommel 2023-11-13 12:02:24 +01:00
Lukas Tönne added this to the Nodes & Physics project 2023-11-13 12:02:29 +01:00
Brecht Van Lommel requested changes 2023-11-13 13:08:25 +01:00
source/blender/blenkernel/intern/node.cc Outdated
@ -675,0 +680,4 @@
}
/* Check known built-in types. */
NODE_TYPES_BEGIN (ntype) {
Brecht Van Lommel commented 2023-11-13 13:05:33 +01:00
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This has bad time complexity, can't we use something like nodeTypeFind?

This has bad time complexity, can't we use something like `nodeTypeFind`?
Lukas Tönne commented 2023-11-13 13:47:40 +01:00
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We don't have a global registry map by static node type, since static ids are sometimes shared between different node types. But i've added a static set to check for known types, which is only built once.

We don't have a global registry map by static node type, since static ids are sometimes shared between different node types. But i've added a static set to check for known types, which is only built once.
LukasTonne marked this conversation as resolved
Lukas Tönne added 1 commit 2023-11-13 13:44:54 +01:00
Lukas Tönne added 1 commit 2023-11-13 13:49:02 +01:00
Iliya Katushenock reviewed 2023-11-13 13:50:46 +01:00
source/blender/blenkernel/intern/node.cc
@ -675,0 +675,4 @@
/* Build a static set of built-in node types to check for known types. */
static blender::Set<int> get_known_node_types_set()
{
blender::Set<int> result;
Iliya Katushenock commented 2023-11-13 13:50:46 +01:00
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Right now that is not static.

Right now that is not static.
Iliya Katushenock commented 2023-11-13 13:53:27 +01:00
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static const Set<int> types = []() {
  Set<int> types;
  for () { add(); }
  return types;
}();
```Cpp static const Set<int> types = []() { Set<int> types; for () { add(); } return types; }(); ```
Brecht Van Lommel commented 2023-11-13 13:55:06 +01:00
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It doesn't need to be because it's static in can_read_node_type, but the comment is a bit confusing.

It doesn't need to be because it's static in `can_read_node_type`, but the comment is a bit confusing.
Lukas Tönne commented 2023-11-13 13:59:01 +01:00
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Removed "static" from the comment.

Removed "static" from the comment.
Iliya Katushenock commented 2023-11-13 14:00:39 +01:00
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Oh, hm, now that is just linead building of set + ((O(1) + 0(N)) / 2) for lookup.

Oh, hm, now that is just linead building of set + ((O(1) + 0(N)) / 2) for lookup.
mod_moder marked this conversation as resolved
Lukas Tönne added 1 commit 2023-11-13 13:58:42 +01:00
Brecht Van Lommel approved these changes 2023-11-13 14:15:40 +01:00
source/blender/blenkernel/intern/node.cc Outdated
@ -675,0 +692,4 @@
/* Check known built-in types. */
static blender::Set<int> known_types = get_known_node_types_set();
if (known_types.contains(type)) {
Brecht Van Lommel commented 2023-11-13 13:53:44 +01:00
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Can be simpler: return known_types.contains(types);

Can be simpler: `return known_types.contains(types);`
LukasTonne marked this conversation as resolved
Brecht Van Lommel commented 2023-11-13 14:16:27 +01:00
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I would not put this in 4.0.0 by the way, since there is some risk to this. Could be put on in main and on the list for 4.0.1 if we find no problems.

I would not put this in 4.0.0 by the way, since there is some risk to this. Could be put on in main and on the list for 4.0.1 if we find no problems.
👍 1
Lukas Tönne added 1 commit 2023-11-13 15:45:30 +01:00
buildbot/vexp-code-patch-coordinator Build done. Details
a985d75f8e Cleanup: simpler return expression.
Lukas Tönne commented 2023-11-13 15:46:57 +01:00
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@blender-bot build

@blender-bot build
Lukas Tönne merged commit 5715c9a323 into blender-v3.3-release 2023-11-13 16:20:51 +01:00
Lukas Tönne deleted branch replace-unknown-node-types 2023-11-13 16:20:56 +01:00
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