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Selection state is now fully double buffered and has interior mutability #4387

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merged 2 commits into from
Nov 29, 2023

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@Wumpf Wumpf commented Nov 29, 2023

What

Hover state was already double buffered but selection was applied immediately. Not it behaves the same way. This is not only faster but also more consistent and gives us "safer" behavior

(branch name is a misnomer - had bigger plans and then split it)

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Seems straightforward and nice!

@Wumpf Wumpf merged commit 5bda28e into main Nov 29, 2023
40 checks passed
@Wumpf Wumpf deleted the andreas/non-mut-ctx branch November 29, 2023 18:07
teh-cmc pushed a commit that referenced this pull request Nov 30, 2023
…ity (#4387)

### What

* A step towards #1325

Hover state was already double buffered but selection was applied
immediately. Not it behaves the same way. This is not only faster but
also more consistent and gives us "safer" behavior

(branch name is a misnomer - had bigger plans and then split it)

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested [app.rerun.io](https://app.rerun.io/pr/4387) (if
applicable)
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG

- [PR Build Summary](https://build.rerun.io/pr/4387)
- [Docs
preview](https://rerun.io/preview/27d7c248aef3221c98e1a477433d1f53e72887f7/docs)
<!--DOCS-PREVIEW-->
- [Examples
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- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)
Wumpf added a commit that referenced this pull request Nov 30, 2023
…on-mutable everywhere (#4389)

### What

* Another step towards #1325
* Follow-up to #4387

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested [app.rerun.io](https://app.rerun.io/pr/4389) (if
applicable)
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG

- [PR Build Summary](https://build.rerun.io/pr/4389)
- [Docs
preview](https://rerun.io/preview/405ddca2f8389bb62e1d1e65ef59a3d211361968/docs)
<!--DOCS-PREVIEW-->
- [Examples
preview](https://rerun.io/preview/405ddca2f8389bb62e1d1e65ef59a3d211361968/examples)
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- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)
Wumpf added a commit that referenced this pull request Dec 5, 2023
…peline/Shader/Layouts/etc.) (#4421)

### What

* Prerequisite for #1325
* Followed by #4422

The dynamic resource pool (textures, buffers, bindgroups) was already
interior mutable. The static resource pool (mostly append only pool)
however, still required mutable access. This PR addresses this.

The actual tricky part is the implications this has on the draw step:
`wgpu::RenderPass<'a>` expects all passed in references to live for
`'a`. This isn't much of a problem we have with resources from the
dynamic resource pool since there the handles are actually Arcs to the
underlying wgpu resources. However we can't do this with RenderPipelines
(the only relevant static resource for this case) though since we want
to be able to swap out what the handle points to for shader reloading.
This means we need to hold the lock read lock on render pipelines for
the entirety of the pass recording.
This is quite nice and easy for our ViewBuilder draws (== individual
space views), but hard for the "compositing step" where we draw into
egui's render pass. This is solved by taking out all render pipelines of
the lock and putting them back in at the start of the frame.
Once wgpu lifts this restrictions we can simplify things a bit!

(to be continued with follow-up PRs!)


### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
  * Full build: [app.rerun.io](https://app.rerun.io/pr/4421/index.html)
* Partial build:
[app.rerun.io](https://app.rerun.io/pr/4421/index.html?manifest_url=https://app.rerun.io/version)
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG

- [PR Build Summary](https://build.rerun.io/pr/4421)
- [Docs
preview](https://rerun.io/preview/8e4b0d88d9d01df8121a84850b251c1840494695/docs)
<!--DOCS-PREVIEW-->
- [Examples
preview](https://rerun.io/preview/8e4b0d88d9d01df8121a84850b251c1840494695/examples)
<!--EXAMPLES-PREVIEW-->
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)


---
Part of series towards more multithreading in the viewer!
* #4387
* #4404
* #4389
* You are here ➡️ #4421
* #4422
* #4430
Wumpf added a commit that referenced this pull request Dec 5, 2023
…xt (#4422)

### What

* Prerequisite for #1325
* Follow-up of #4421
* Followed by #4430

Make draw data (this is in essence resource submission to GPU! e.g. make
pointcloud ready to render) an operation that doesn't require a mutable
renderer context.

Two pieces to this:
* `FileResolver` resolve needs to be non-mut, this turned out to be
trivial
* `Renderer::get_or_create` had to be streamlined. Renderer creation is
now done directly on the context and holding a renderer implies holding
a read lock. Since Renderers are added **very** rarely, this isn't much
of a limitation!

This causes a large trickle of removing `&mut` and gets us _almost_ to
having a non-mutable render context reference on the Viewer context!

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
  * Full build: [app.rerun.io](https://app.rerun.io/pr/4422/index.html)
* Partial build:
[app.rerun.io](https://app.rerun.io/pr/4422/index.html?manifest_url=https://app.rerun.io/version
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG

- [PR Build Summary](https://build.rerun.io/pr/4422)
- [Docs
preview](https://rerun.io/preview/5a1ad48f35f4cd28bb4dc4cd56f56ac289a50ab3/docs)
<!--DOCS-PREVIEW-->
- [Examples
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<!--EXAMPLES-PREVIEW-->
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)

---
Part of series towards more multithreading in the viewer!
* #4387
* #4404
* #4389
* #4421
* You are here ➡️ #4422
* #4430
Wumpf added a commit that referenced this pull request Dec 5, 2023
### What

* Prerequisite for #1325
* Follow-up of #4422

Makes `ViewBuilder`'s draw method no longer require a mutable render
context, thus no longer requiring a mutable frame state on the render
context (which previously held the mutable viewbuilder!), thus finally
lifting the need to store mutable references to the render context from
the viewer context!

Having a non-mut draw method on ViewBuilder is _mostly_ straight forward
at this point. The main hurdle are render phases that so far consumed
themselves on drawing because of readback textures (which are still
self-consuming for good reasons).

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
  * Full build: [app.rerun.io](https://app.rerun.io/pr/4430/index.html)
* Partial build:
[app.rerun.io](https://app.rerun.io/pr/4430/index.html?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
- Useful for quick testing when changes do not affect examples in any
way
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG

- [PR Build Summary](https://build.rerun.io/pr/4430)
- [Docs
preview](https://rerun.io/preview/965d71c3723e74947e2d063372d51d9ae89cc9dd/docs)
<!--DOCS-PREVIEW-->
- [Examples
preview](https://rerun.io/preview/965d71c3723e74947e2d063372d51d9ae89cc9dd/examples)
<!--EXAMPLES-PREVIEW-->
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)


---
Part of series towards more multithreading in the viewer!
* #4387
* #4404
* #4389
* #4421
* #4422 
* You are here ➡️ #4430
@Wumpf Wumpf mentioned this pull request Dec 5, 2023
4 tasks
Wumpf added a commit that referenced this pull request Dec 5, 2023
### What

* Prerequisite for #1325
* Follow-up of #4430 

What it says on the tin!
No additional review required, just waiting for rust ci to be sure :)

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
  * Full build: [app.rerun.io](https://app.rerun.io/pr/4430/index.html)
* Partial build:
[app.rerun.io](https://app.rerun.io/pr/4430/index.html?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
- Useful for quick testing when changes do not affect examples in any
way
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG

- [PR Build Summary](https://build.rerun.io/pr/4430)
- [Docs
preview](https://rerun.io/preview/cc13e9becf363d9f611cfc59c61b41d1135ef411/docs)
<!--DOCS-PREVIEW-->
- [Examples
preview](https://rerun.io/preview/cc13e9becf363d9f611cfc59c61b41d1135ef411/examples)
<!--EXAMPLES-PREVIEW-->
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)


---
Part of series towards more multithreading in the viewer!
* #4387
* #4404
* #4389
* #4421
* #4422 
* #4430
* You are here ➡️  #4438
@Wumpf Wumpf mentioned this pull request Dec 7, 2023
4 tasks
Wumpf added a commit that referenced this pull request Dec 11, 2023
### What

* Fixes #1325 

Two levels of parallism actually:
* All context & part systems for a single space view each run in
parallel
* All space views now in parallel first setup their query and then kick
of their (parallized!) system execution

This gives us major speedups whenever:
* There is several heavy systems in a scene (e.g. a lot of points and a
lot of arrows)
* There is several space views

As such this is a very fundamental & widely applicable parallelization!


![image](https://github.com/rerun-io/rerun/assets/1220815/14bc6ca8-abb0-480b-91dc-2da51253dd92)
(a rather silly "points with arrows" scene duplicated a bunch of times.
Note that we still don't have any caching, so all these space views
might as well be animated individually!)

<img width="1421" alt="image"
src="https://github.com/rerun-io/rerun/assets/1220815/57e13e15-9d8f-4a30-bf74-d8174676986d">
(busy rayon worker threads!)


Related things that are not parallel yet:
* ui methods per space view (run one by one)
* draw call recording (done as part of the ui method, but we could
likely do this in parallel, only joining on these tasks when egui wants
to queue up the command buffers)
* processing _within_ a system depends on the system at hand. Today,
only point cloud has some parallization


### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
  * Full build: [app.rerun.io](https://app.rerun.io/pr/4460/index.html)
* Partial build:
[app.rerun.io](https://app.rerun.io/pr/4460/index.html?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
- Useful for quick testing when changes do not affect examples in any
way
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG

- [PR Build Summary](https://build.rerun.io/pr/4460)
- [Docs
preview](https://rerun.io/preview/cb7e9a9902bb9923ade41271ccc43ed01a2a4d33/docs)
<!--DOCS-PREVIEW-->
- [Examples
preview](https://rerun.io/preview/cb7e9a9902bb9923ade41271ccc43ed01a2a4d33/examples)
<!--EXAMPLES-PREVIEW-->
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)

---
End of a series on refactors leading to this parallization:
* #4387
* #4404
* #4389
* #4421
* #4422 
* #4430
* #4438
* #4460

---------

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
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