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2022-08-31Depsgraph: optimize out evaluation of hidden objectsSergey Sharybin
This change makes it so that objects which are temporary hidden from the viewport (the icon toggle in outliner) do not affect on the performance of the viewport. The attached file demonstrates the issue. Before this change hiding the object does not change FPS, after this change FPS goes high when the object is hidden. F13435936 Changing the object temporary visibility is already expected to tag scene for bases updates, which flushes down the stream to the object visibility update. So the only remaining topic was to ensure the graph does a special round of visibility update on such changes. Differential Revision: https://developer.blender.org/D15813
2022-08-31Fix unnecessary modifier visibility re-evaluationSergey Sharybin
While it is hard to measure the performance impact accurately, there is no need to perform per-modifier string lookup on every frame update. Implemented as an exceptional case in the code which flushes updates to the entire component. Sounds a bit suboptimal, but there are already other exception cases handled in the function. Differential Revision: https://developer.blender.org/D15812
2022-08-31Cleanup: break before the default case in switch statementsCampbell Barton
While missing the break before a default that only breaks isn't an error, it means adding new cases needs to remember to add the break for an existing case, changing the default case will also result in an unintended fall-through. Also avoid `default:;` and add an explicit break.
2022-08-15Fix T100394: Regression: Duplicating a modifier causes a crashSergey Sharybin
Need to update relations when modifiers are added or removed since those create nodes in the dependency graph. Added an assert statement to point at possible culprit so that issues can be fixed more quickly.
2022-08-10Depsgraph: Optimize evaluation of dependencies of disabled modifiersSergey Sharybin
Solves long-standing issue when dependencies of disabled modifiers are evaluated. Simple test case: no drivers or animation. Manually enabling modifier is expected to bring FPS up, enabling modifier will bring FPS (sine evaluation can not be avoided) F13336690 More complex test case: modifier visibility is driven by an animated property. In am ideal world FPS during property being zero is fast and when property is 1 the FPS is low. F13336691. Differential Revision: https://developer.blender.org/D15625
2022-07-27Fix T99976: Animated visibility not rendering properly in viewportSergey Sharybin
A mistake in the 0dcee6a3866 which made specific driven visibility to work, but did not properly handle actual time-based visibility. The basic idea of the change is to preserve recalculation flags of nodes which were tagged for update but were not evaluated due to visibility constraints. In the file from the report this makes it so tagging which is done first time ID is in the dependency graph are handled when the ID actually becomes visible. This is what solved the root of the problem from the report: there was missing geometry update since it was "swallowed" by the evaluation during the object being invisible. In other configurations this change allows to handle pending geometry updates due to animated modifiers be handled when object becomes visible without time change. This change also solves visibility issue of the synchronization component which also started to be handled badly since the previous fix attempt. Basically, the needed exception in its visibility handling did not happen and a regular logic was used for it. Tested with files from the T99733, T99976, and from the Heist project. Differential Revision: https://developer.blender.org/D15544
2022-07-26Cleanup: spelling in commentsCampbell Barton
2022-07-21Fix T99733: Objects with driven visibility are evaluated when not neededSergey Sharybin
The issue was caused by the fact that objects with driven or animated visibility were considered visible by the dependency graph evaluation. This change makes it so the dependency graph evaluation is aware of visibility which might be changing. This is achieved by evaluating the path of the graph which affects objects visibility and adjusts to it before evaluating the rest of the graph. There is some time penalty to this, but there does not seem to be a way to fully avoid this penalty. With the production shot from the heist project the FPS drops by a tenth of a frame (~9.4 vs ~9.3 fps) when adding a driver to an object which keeps it visible. Note that this is a bit hard to measure since the FPS fluctuates quite a bit throughout the playback. On the other hand, having a driver on a visibility of a heavy object from character and setting visibility to false gives big speedup. Also worth noting that there is no penalty at all when there are no animated visibilities in the scene. Differential Revision: https://developer.blender.org/D15498
2022-07-21Depsgraph: Clear operation evaluation flags early onSergey Sharybin
The goal is to make it possible to evaluate the graph in multiple passes without evaluating the same node multiple times. Currently should not be any functional changes.
2022-07-19Depsgraph: Cleanup, use nested namespace definitionSergey Sharybin
2022-07-19Depsgraph: Cleanup, don't mic static function and anonymous namespaceSergey Sharybin
2022-07-19Depsgraph: Refactor evaluation into smaller reusable functionsSergey Sharybin
Should be no functional changes.
2022-07-19Depsgraph: Use single task pool during evaluationSergey Sharybin
Not sure why multiple pools were created: the pool should be able to handle two sets of tasks. Perhaps non-measurable improvement in terms of performance but this change simplifies code a bit.
2022-04-13Cover some DNA files with C++ utility macrosSergey Sharybin
Solves compilation warning with Clang, and moves manipulation with DNA structures to the designed way for C++. The tests and few other places are update to the new code by Jacques. Ref T96847 Maniphest Tasks: T96847 Differential Revision: https://developer.blender.org/D14625
2022-04-11Cleanup: malformed C-style comment blocks, spellingCampbell Barton
- Missing star prefix. - Unnecessary indentation. - Blank line after dot-points (otherwise doxygen merges with the previous dot-point). - Use back-slash for doxygen commands. - Correct spelling.
2022-04-05Curves: fix edit mode detectionKévin Dietrich
This adds missing cases to detect edit mode for Curves objects. Unlike other object types, Curves do not have specific edit data, rather we edit the original data directly, and rely on `Object.mode`. For this, `BKE_object_data_is_in_editmode` had to be modified to take a pointer to the object. This affects two places: the outliner and the dependency graph. For the former place, the object pointer is readily available, and we can use it. For the latter, the object pointer is not available, however since it is used to update edit mode pointers, and since Curves do not have such data, we can safely pass null to the function here. This also fixes the assertion failure that happens when closing a file in edit mode. Differential Revision: https://developer.blender.org/D14330
2022-03-31Cleanup: spelling, trailing space for comment-blocksCampbell Barton
2022-03-08Cleanup: Clang tidyHans Goudey
2022-03-07GPencil: Temporary fix to avoid crashes on startupFalk David
This quick fix will populate the runtime orig pointers to avoid crashes when a grease pencil object uses layer transforms, parenting or modifiers. This will have to be revisited and fixed with a better solution.
2022-02-18Cleanup: Rename original curve object type enumHans Goudey
This commit renames enums related the "Curve" object type and ID type to add `_LEGACY` to the end. The idea is to make our aspirations clearer in the code and to avoid ambiguities between `CURVE` and `CURVES`. Ref T95355 To summarize for the record, the plans are: - In the short/medium term, replace the `Curve` object data type with `Curves` - In the longer term (no immediate plans), use a proper data block for 3D text and surfaces. Differential Revision: https://developer.blender.org/D14114
2022-02-13Cleanup: Clang tidyHans Goudey
Use using instead of typedef, remove redundant string init, use "empty", address qualified auto, use nullptr.
2022-02-11File headers: SPDX License migrationCampbell Barton
Use a shorter/simpler license convention, stops the header taking so much space. Follow the SPDX license specification: https://spdx.org/licenses - C/C++/objc/objc++ - Python - Shell Scripts - CMake, GNUmakefile While most of the source tree has been included - `./extern/` was left out. - `./intern/cycles` & `./intern/atomic` are also excluded because they use different header conventions. doc/license/SPDX-license-identifiers.txt has been added to list SPDX all used identifiers. See P2788 for the script that automated these edits. Reviewed By: brecht, mont29, sergey Ref D14069
2022-02-11Cleanup: clang-formatCampbell Barton
2022-02-10GPencil: Update-on-write using update cacheFalk David
This implements the update cache described in T95401. The cache is currently only used for drawing strokes and sculpting (using the push brush). **Note: Making use of the cache throughout grease pencil will have to be done incrementally in other patches. ** The update cache stores what elements have changed in the original data-block since the last time the eval object was updated. Additionally, the update cache can store multiple updates to the data and minimizes the number of elements that need to be copied. Elements can be tagged using `BKE_gpencil_tag_full_update` and `BKE_gpencil_tag_light_update`. A full update means that the element itself will be copied but also all of the content inside. E.g. when a layer is tagged for a full update, the layer, all the frames inside the layer and all the strokes inside the frames will be copied. A light update means that only the properties of the element are copied without any of the content. E.g. if a layer is tagged with a light update, it will copy the layer name, opacity, transform, etc. When the update cache is in use (e.g. elements have been tagged) then the depsgraph will not trigger a copy-on-write, but an update-on-write. This means that the update cache will be used to determine what elements have changed and then only those elements will be copied over to the eval object. If the update cache is empty or the data block was tagged with a full update, we always fall back to a copy-on-write. Currently, the update cache is only used by the active depsgraph. This is because we need to free the update cache after an update-on-write so it's reset and we need to make sure it is not freed or read by other depsgraphs. Co-authored-by: @yann-lty This patch was contributed by The SPA Studios. Reviewed By: sergey, antoniov, #dependency_graph, pepeland, mendio Maniphest Tasks: T95401 Differential Revision: https://developer.blender.org/D13984
2022-02-09Cleanup: make file headers more consistentCampbell Barton
Also some descriptive text into doc-strings.
2022-02-07Curves: Rename "Hair" types, variables, and functions to "Curves"Hans Goudey
Based on discussions from T95355 and T94193, the plan is to use the name "Curves" to describe the data-block container for multiple curves. Eventually this will replace the existing "Curve" data-block. However, it will be a while before the curve data-block can be replaced so in order to distinguish the two curve types in the UI, "Hair Curves" will be used, but eventually changed back to "Curves". This patch renames "hair-related" files, functions, types, and variable names to this convention. A deep rename is preferred to keep code consistent and to avoid any "hair" terminology from leaking, since the new data-block is meant for all curve types, not just hair use cases. The downside of this naming is that the difference between "Curve" and "Curves" has become important. That was considered during design discussons and deemed acceptable, especially given the non-permanent nature of the somewhat common conflict. Some points of interest: - All DNA compatibility is lost, just like rBf59767ff9729. - I renamed `ID_HA` to `ID_CV` so there is no complete mismatch. - `hair_curves` is used where necessary to distinguish from the existing "curves" plural. - I didn't rename any of the cycles/rendering code function names, since that is also used by the old hair particle system. Differential Revision: https://developer.blender.org/D14007
2022-02-04Cleanup: Grammar in comments and tooltipsHans Goudey
- "own" -> "its own" - "it's" -> "its" - Use proper plural
2022-02-04Remove internal proxy code, and deprecate related DNA data.Bastien Montagne
Part of T91671. Not much else to say, this is mainly a massive deletion of code. Note that a few cleanups possible after this proxy removal were kept out of this commit to try to reduce a bit its size. Reviewed By: sergey, brecht Maniphest Tasks: T91671 Differential Revision: https://developer.blender.org/D13995
2022-02-03Fix assert in original modifiers pointer update functionSergey Sharybin
The issue was happening with a specific file where the ID management code was not fully copying all modifiers because of the extra check in the `BKE_object_support_modifier_type_check()`. While it is arguable that copy-on-write should be a 1:1 copy there is no real need to maintain the per-modifier pointer to its original. Use its SessionUUID to perform lookup in the original datablock. Downside of this approach is that it is a linear lookup instead of direct pointer access, but the upside is that there is less pointers to manage and that the file with unsupported modifiers does behave correct without any asserts. Differential Revision: https://developer.blender.org/D13993
2022-02-03Despgraph: Remove asserts from object modifier backupSergey Sharybin
The modifiers are mapped between original and evaluated objects based on their session IDs. The pointer to original modifier is no longer needed for the backup: it remained from the initial implementation which was rewritten at some point. This is a preparation for removal of the pointer to original modifier.
2022-02-01Fix T95356: Crash in armature edit mode and certain conditionSergey Sharybin
Blender would have crashed when renaming bone in Edit Mode, Saving, and than selecting/deselecting. Caused by a mistake in the 0f89bcdbebf5: can not "short-circuit" the CoW update if it was explicitly requested. Safest for now solution seems to be to store whether the CoW component has been explicitly tagged, so that the following configuration can be supported: DEG_id_tag_update(id, ID_RECALC_GEOMETRY); DEG_id_tag_update(id, ID_RECALC_COPY_ON_WRITE); Differential Revision: https://developer.blender.org/D13966
2022-01-25Fix depsgraphs sharing IDs via evaluated edit meshSergey Sharybin
The evaluated mesh is a result of evaluated modifiers, and referencing other evaluated IDs such as materials. It can not be stored in the EditMesh structure which is intended to be re-used by many areas. Such sharing was causing ownership errors causing bugs like T93855: Cycles crash with edit mode and simultaneous viewport and final render The proposed solution is to store the evaluated edit mesh and its cage in the object's runtime field. The motivation goes as following: - It allows to avoid ownership problems like the ones in the linked report. - Object level is chosen over mesh level is because the evaluated mesh is affected by modifiers, which are on the object level. This patch allows to have modifier stack of an object which shares mesh with an object which is in edit mode to be properly taken into account (before the change the modifier stack from the active object will be used for all objects which share the mesh). There is a change in the way how copy-on-write is handled in the edit mode to allow proper state update when changing active scene (or having two windows with different scenes). Previously, the copt-on-write would have been ignored by skipping tagging CoW component. Now it is ignored from within the CoW operation callback. This allows to update edit pointers for objects which are not from the current depsgraph and where the edit_mesh was never assigned in the case when the depsgraph was evaluated prior the active depsgraph. There is no user level changes changes expected with the CoW handling changes: should not affect on neither performance, nor memory consumption. Tested scenarios: - Various modifiers configurations of objects sharing mesh and be part of the same scene. - Steps from the reports: T93855, T82952, T77359 This also fixes T76609, T72733 and perhaps other reports. Differential Revision: https://developer.blender.org/D13824
2022-01-06Cleanup: spelling in commentsCampbell Barton
2021-12-10Cleanup: move public doc-strings into headers for 'depsgraph'Campbell Barton
- Added space below non doc-string comments to make it clear these aren't comments for the symbols directly below them. - Use doxy sections for some headers. Ref T92709
2021-11-02Fix T89487: Crash adding Rigid Body to object with shared mesh dataSergey Sharybin
Not sure why this bug was only discovered by such an elaborate steps and why it took so long to be discovered. The root of the issue is that in the 956c539e597a the typical flow of tag+flush+evaluate was violated and tagging for visibility change happened after flush.
2021-10-13Fix T92136: Leak accessing evaluated depsgraph data from PythonCampbell Barton
Copy-on-write data blocks could be referenced from python but were not properly managing python reference counting. This would leak memory for any evaluated data-blocks accessed by Python. Reviewed By: sergey Ref D12850
2021-10-13Cleanup: Remove unused code paths in the depsgraph copy-on-writeSergey Sharybin
Seems to be residue from an early 2.80 days: the placeholder code path is no longer used. Remove all the tricky code for this, and make it clear that the `deg_expand_copy_on_write_datablock` is used on an non-expanded datablock. Should be no functional changes. And should help simplify D12850. Differential Revision: https://developer.blender.org/D12852
2021-10-13Revert "Fix T92136: Leak accessing evaluated depsgraph data from Python"Campbell Barton
This reverts commit 0558907ae674ebe81dc8910a6615fc32ce675d70. Based on discussion with Sergey, having Python references to un-expanded data should not happen - this change needs to be reconsidered.
2021-10-13Fix T92136: Leak accessing evaluated depsgraph data from PythonCampbell Barton
2021-09-11Geometry Nodes: Support modifier on curve objectsHans Goudey
With this commit, curve objects support the geometry nodes modifier. Curves objects now evaluate to `CurveEval` unless there was a previous implicit conversion (tessellating modifiers, mesh modifiers, or the settings in the curve "Geometry" panel). In the new code, curves are only considered to be the wire edges-- any generated surface is a mesh instead, stored in the evaluated geometry set. The consolidation of concepts mentioned above allows remove a lot of code that had to do with maintaining the `DispList` type temporarily for modifiers and rendering. Instead, render engines see a separate object for the mesh from the mesh geometry component, and when the curve object evaluates to a curve, the `CurveEval` is always used for drawing wire edges. However, currently the `DispList` type is still maintained and used as an intermediate step in implicit mesh conversion. In the future, more uses of it could be changed to use `CurveEval` and `Mesh` instead. This is mostly not changed behavior, it is just a formalization of existing logic after recent fixes for 2.8 versions last year and two years ago. Also, in the future more functionality can be converted to nodes, removing cases of implicit conversions. For more discussion on that topic, see T89676. The `use_fill_deform` option is removed. It has not worked properly since 2.62, and the choice for filling a curve before or after deformation will work much better and be clearer with a node system. Applying the geometry nodes modifier to generate a curve is not implemented with this commit, so applying the modifier won't work at all. This is a separate technical challenge, and should be solved in a separate step. Differential Revision: https://developer.blender.org/D11597
2021-09-10Depsgraph: release GIL when evaluating the depsgraphSybren A. Stüvel
Evaluating the dependency graph potentially executes Python code when evaluating drivers. In specific situations (see T91046) this could deadlock Blender entirely. Temporarily releasing the GIL when evaluating the depsgraph resolves this. This is an improved version of rBfc460351170478e712740ae1917a2e24803eba3b, thanks @brecht for the diff! Manifest task: T91046
2021-09-09Revert "Depsgraph: release GIL when evaluating the depsgraph"Brecht Van Lommel
It is causing crashes in rendering, when releasing the GIL in render threads while the main thread is holding it. Ref T91046 This reverts commit fc460351170478e712740ae1917a2e24803eba3b.
2021-09-09Depsgraph: release GIL when evaluating the depsgraphSybren A. Stüvel
Evaluating the dependency graph potentially executes Python code when evaluating drivers. In specific situations (see T91046) this could deadlock Blender entirely. Temporarily releasing the GIL when evaluating the depsgraph resolves this. Calling the `BPy_BEGIN_ALLOW_THREADS` macro is relatively safe, as it's a no-op when the current thread does not have the GIL. Developed in collaboration with @sergey Manifest task: T91046
2021-08-25Cleanup and remove SEQ_ALL_BEGIN macroSebastian Parborg
We now use a for_each function with callback to iterate through all sequences in the scene. This has the benefit that we now only loop over the sequences in the scene once. Before we would loop over them twice and allocate memory to store temporary data. The allocation of temporary data lead to unintentional memory leaks if the code used returns to exit out of the iteration loop. The new for_each callback method doesn't allocate any temporary data and only iterates though all sequences once. Reviewed By: Richard Antalik, Bastien Montagne Differential Revision: http://developer.blender.org/D12278
2021-08-09Cleanup: Spelling and typos in commentSergey Sharybin
2021-07-23Cleanup: code comments punctuation / spacingCampbell Barton
2021-07-21Cleanup: replace BLI_assert(0 && "text") with BLI_assert_msgCampbell Barton
2021-07-20Cleanup: reserve C++ comments for disabled codeCampbell Barton
Use C comments for plain text.
2021-07-19Revert "Depsgraph: Implement 'ID_RECALC_GEOMETRY_DEFORM'"Germano Cavalcante
This reverts commits bfa3dc91b75407b063f2ac991b176d98c050f92d, 52b94049f2a71a74f52247f83657cf3a5c8712b4, ae379714e4f1eca74f5f77532a6e959f29445236, a770faa811ee62837eb540b0bd83ca0770f16663, 4ed029fc02b022cb5ff28ed3ce70992c450d2be5, 101a493ab556c6597ac91fba204059be67b35990 and 62a2faa7ef39130446716d7a06215cd1df1eb2ac. And fixes T89955. Changing the dependency graph is a can of worms and the result is a kind of unpredictable. A different solution will be planned.
2021-07-15Cleanup: replace BLI_assert(!"text") with BLI_assert_msg(0, "text")Campbell Barton
This shows the text as part of the assertion message.