Add BRP to render app by Zeophlite · Pull Request #23446 · bevyengine/bevy

Zeophlite · 2026-03-21T09:37:45Z

Objective

BRP on the RenderApp

Solution

Add type registry to RenderApp
Add BRP systems to render app
Add HTTP listener to extra port

I suggest hiding whitespace for reviewing:

Testing

CI
in terminal 1 run cargo run --example client --features="bevy_remote"
in terminal 2 run curl -d'{"jsonrpc":"2.0","method":"world.list_resources","id":1,"params":{}}' -X POST -H "Accept: applcation/json" -H "Content-Type: application/json" http://127.0.0.1:15702
in terminal 2 run curl -d'{"jsonrpc":"2.0","method":"world.list_resources","id":1,"params":{}}' -X POST -H "Accept: applcation/json" -H "Content-Type: application/json" http://127.0.0.1:15703

github-actions · 2026-03-21T10:06:54Z

The generated examples/README.md is out of sync with the example metadata in Cargo.toml or the example readme template. Please run cargo run -p build-templated-pages -- update examples to update it, and commit the file change.

crates/bevy_remote/src/http.rs

crates/bevy_remote/src/lib.rs

crates/bevy_remote/src/http.rs

examples/remote/render_client.rs

crates/bevy_remote/src/lib.rs

crates/bevy_remote/src/http.rs

Co-authored-by: Kevin Chen <chen.kevin.f@gmail.com>

crates/bevy_remote/src/lib.rs

# Objective - List schedules in BRP ## Solution - Add the endpoint - Add to `Schedules` some tracking of `temporarily_removed` (schedule removed to execute) and `empty_labels` (no `Schedule` for that label) ## Related: - #23452 - #23446 ## Testing - in terminal 1 run `cargo run --example server --features="bevy_remote"` - in terminal 2 run `curl -d'{"jsonrpc":"2.0","method":"schedule.list","id":1,"params":{}}' -X POST -H "Accept: applcation/json" -H "Content-Type: application/json" http://127.0.0.1:15702` <details><summary>Response</summary> ```json { "jsonrpc": "2.0", "id": 1, "result": { "empty_schedule_labels": [ "FixedPreUpdate", "FixedUpdate" ], "schedule_labels": [ "Startup", "First", "RunFixedMainLoop", "PostStartup", "FixedFirst", "StateTransition", "PreUpdate", "PostUpdate", "Update", "PreStartup", "SpawnScene", "Last", "FixedLast", "FixedPostUpdate", "FixedMain" ], "unavailable_schedule_labels": [ "Main", "RemoteLast" ] } } ``` </details> --------- Co-authored-by: Kevin Chen <chen.kevin.f@gmail.com>

atlv24 · 2026-03-25T18:12:45Z

Concretely, I think you should add a run condition "hasnt_started" and then do start_http_server.run_if(hasnt_started)

Zeophlite · 2026-03-25T22:39:15Z

There's a nice builtin, start_http_server.run_if(run_once)

kfc35

I’ll review the other PR #23513 since it looks like this has code dependent on it

crates/bevy_remote/src/http.rs

examples/remote/client.rs

# Objective - Describe the graph for a given schedule ## Solution - Add endpoint `schedule.graph` ## Related: - #23447 - #23446 ## Testing - in terminal 1 run `cargo run --example server --features="bevy_remote"` - in terminal 2 run `curl -d'{"jsonrpc":"2.0","method":"schedule.graph","id":1,"params":{"schedule_name":"First"}}' -X POST -H "Accept: applcation/json" -H "Content-Type: application/json" http://127.0.0.1:15702 ` <details><summary>Response</summary> ```json { "jsonrpc": "2.0", "id": 1, "result": { "systemsets": [ { "key": "SystemSetKey(1v1)", "method": "SystemTypeSet:bevy_ecs::message::update::message_update_system" }, { "key": "SystemSetKey(2v1)", "method": "MessageUpdateSystems" }, { "key": "SystemSetKey(3v1)", "method": "SystemTypeSet:bevy_time::time_system" }, { "key": "SystemSetKey(4v1)", "method": "TimeSystems" }, { "key": "SystemSetKey(5v1)", "method": "SystemTypeSet:bevy_render::view::window::screenshot::clear_screenshots" }, { "key": "SystemSetKey(6v1)", "method": "SystemTypeSet:bevy_ecs::schedule::executor::ApplyDeferred" }, { "key": "SystemSetKey(7v1)", "method": "SystemTypeSet:bevy_ui::widget::viewport::viewport_picking" }, { "key": "SystemSetKey(8v1)", "method": "PostInput" }, { "key": "SystemSetKey(9v1)", "method": "SystemTypeSet:bevy_picking::input::mouse_pick_events" }, { "key": "SystemSetKey(10v1)", "method": "Input" }, { "key": "SystemSetKey(11v1)", "method": "SystemTypeSet:bevy_picking::input::touch_pick_events" } ], "hierarchy_nodes": [ "Set(SystemSetKey(11v1))", "Set(SystemSetKey(10v1))", "System(SystemKey(6v1))", "Set(SystemSetKey(9v1))", "System(SystemKey(5v1))", "Set(SystemSetKey(8v1))", "Set(SystemSetKey(7v1))", "System(SystemKey(4v1))", "Set(SystemSetKey(6v1))", "Set(SystemSetKey(5v1))", "System(SystemKey(3v1))", "Set(SystemSetKey(4v1))", "Set(SystemSetKey(3v1))", "System(SystemKey(2v1))", "Set(SystemSetKey(2v1))", "Set(SystemSetKey(1v1))", "System(SystemKey(1v1))" ], "hierarchy_edges": [ [ "Set(SystemSetKey(1v1))", "System(SystemKey(1v1))" ], [ "Set(SystemSetKey(3v1))", "System(SystemKey(2v1))" ], [ "Set(SystemSetKey(8v1))", "System(SystemKey(4v1))" ], [ "Set(SystemSetKey(2v1))", "System(SystemKey(1v1))" ], [ "Set(SystemSetKey(7v1))", "System(SystemKey(4v1))" ], [ "Set(SystemSetKey(4v1))", "System(SystemKey(2v1))" ], [ "Set(SystemSetKey(9v1))", "System(SystemKey(5v1))" ], [ "Set(SystemSetKey(10v1))", "System(SystemKey(6v1))" ], [ "Set(SystemSetKey(5v1))", "System(SystemKey(3v1))" ], [ "Set(SystemSetKey(10v1))", "System(SystemKey(5v1))" ], [ "Set(SystemSetKey(11v1))", "System(SystemKey(6v1))" ] ], "dependency_nodes": [ "System(SystemKey(1v1))", "Set(SystemSetKey(1v1))", "Set(SystemSetKey(2v1))", "System(SystemKey(2v1))", "Set(SystemSetKey(3v1))", "Set(SystemSetKey(4v1))", "System(SystemKey(3v1))", "Set(SystemSetKey(5v1))", "Set(SystemSetKey(6v1))", "System(SystemKey(4v1))", "Set(SystemSetKey(7v1))", "Set(SystemSetKey(8v1))", "System(SystemKey(5v1))", "Set(SystemSetKey(9v1))", "Set(SystemSetKey(10v1))", "System(SystemKey(6v1))", "Set(SystemSetKey(11v1))" ], "dependency_edges": [ [ "Set(SystemSetKey(2v1))", "Set(SystemSetKey(10v1))" ], [ "Set(SystemSetKey(10v1))", "Set(SystemSetKey(8v1))" ], [ "System(SystemKey(3v1))", "Set(SystemSetKey(6v1))" ], [ "System(SystemKey(5v1))", "System(SystemKey(6v1))" ], [ "Set(SystemSetKey(4v1))", "Set(SystemSetKey(8v1))" ], [ "Set(SystemSetKey(4v1))", "Set(SystemSetKey(10v1))" ], [ "Set(SystemSetKey(2v1))", "Set(SystemSetKey(8v1))" ], [ "Set(SystemSetKey(1v1))", "System(SystemKey(3v1))" ] ] } } ``` </details> From the above response, the below graph can be generated. Hierarchy edges are blue, dependency edges are red. System nodes are implied by hierarchy from Set to System. <img width="1543" height="347" alt="first" src="https://github.com/user-attachments/assets/80ac7e80-2a28-4246-80cc-29337bad4383" /> <details><summary>GraphViz Source</summary> ``` digraph { "Set(SystemSetKey(1v1))" [label="message_update_system"] "Set(SystemSetKey(2v1))" [label="MessageUpdateSystems"] "Set(SystemSetKey(3v1))" [label="time_system"] "Set(SystemSetKey(4v1))" [label="TimeSystems"] "Set(SystemSetKey(5v1))" [label="clear_screenshots"] "Set(SystemSetKey(6v1))" [label="ApplyDeferred"] "Set(SystemSetKey(7v1))" [label="viewport_picking"] "Set(SystemSetKey(8v1))" [label="PostInput"] "Set(SystemSetKey(9v1))" [label="mouse_pick_events"] "Set(SystemSetKey(10v1))" [label="Input"] "Set(SystemSetKey(11v1))" [label="touch_pick_events"] // implied nodes "System(SystemKey(1v1))" [label="implied message_update_system", shape=rectangle] "System(SystemKey(2v1))" [label="implied time_system", shape=rectangle] "System(SystemKey(3v1))" [label="implied clear_screenshots", shape=rectangle] "System(SystemKey(4v1))" [label="implied viewport_picking", shape=rectangle] "System(SystemKey(5v1))" [label="implied mouse_pick_events", shape=rectangle] "System(SystemKey(6v1))" [label="implied touch_pick_events", shape=rectangle] // hierarchy "Set(SystemSetKey(1v1))" -> "System(SystemKey(1v1))" [color=blue] "Set(SystemSetKey(3v1))" -> "System(SystemKey(2v1))" [color=blue] "Set(SystemSetKey(8v1))" -> "System(SystemKey(4v1))" [color=blue] "Set(SystemSetKey(2v1))" -> "System(SystemKey(1v1))" [color=blue] "Set(SystemSetKey(7v1))" -> "System(SystemKey(4v1))" [color=blue] "Set(SystemSetKey(4v1))" -> "System(SystemKey(2v1))" [color=blue] "Set(SystemSetKey(9v1))" -> "System(SystemKey(5v1))" [color=blue] "Set(SystemSetKey(10v1))" -> "System(SystemKey(6v1))" [color=blue] "Set(SystemSetKey(5v1))" -> "System(SystemKey(3v1))" [color=blue] "Set(SystemSetKey(10v1))" -> "System(SystemKey(5v1))" [color=blue] "Set(SystemSetKey(11v1))" -> "System(SystemKey(6v1))" [color=blue] // dependencies "Set(SystemSetKey(2v1))" -> "Set(SystemSetKey(10v1))" [color=red] "Set(SystemSetKey(10v1))" -> "Set(SystemSetKey(8v1))" [color=red] "System(SystemKey(3v1))" -> "Set(SystemSetKey(6v1))" [color=red] "System(SystemKey(5v1))" -> "System(SystemKey(6v1))" [color=red] "Set(SystemSetKey(4v1))" -> "Set(SystemSetKey(8v1))" [color=red] "Set(SystemSetKey(4v1))" -> "Set(SystemSetKey(10v1))" [color=red] "Set(SystemSetKey(2v1))" -> "Set(SystemSetKey(8v1))" [color=red] "Set(SystemSetKey(1v1))" -> "System(SystemKey(3v1))" [color=red] } ``` </details> --------- Co-authored-by: Kevin Chen <chen.kevin.f@gmail.com> Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>

crates/bevy_render/src/lib.rs

…` changes (#23513) # Objective - Render schedules are static, compared to the main schedules in the main world that can be dynamically added with the `MainScheduleOrder` resource - This is necessary to allow BRP introspection of schedules in the Render world (see #23452 ) ## Solution - Add `RenderScheduleOrder` resource that allows for ordering of `Render` schedules ## Testing - CI - #23446

alice-i-cecile

I don't think that this warrants release notes: it's not going to be meaningful to users who have never used Bevy (or most Bevy users).

Add BRP to render app

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Zeophlite added the D-Modest A "normal" level of difficulty; suitable for simple features or challenging fixes label Mar 21, 2026

Cleanup

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Zeophlite force-pushed the brp-render branch from 1e02aac to 2c6903f Compare March 21, 2026 15:25

Zeophlite marked this pull request as ready for review March 21, 2026 15:39

Zeophlite added S-Needs-Help The author needs help finishing this PR. A-Dev-Tools Tools used to debug Bevy applications. C-Feature A new feature, making something new possible labels Mar 21, 2026

kfc35 self-requested a review March 21, 2026 16:15

Zeophlite added this to the 0.19 milestone Mar 21, 2026

kfc35 reviewed Mar 21, 2026

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Zeophlite mentioned this pull request Mar 21, 2026

BRP Add schedule.list endpoint #23447

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Zeophlite and others added 2 commits March 22, 2026 23:24

Apply suggestions from code review

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Co-authored-by: Kevin Chen <chen.kevin.f@gmail.com>

Review

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Zeophlite mentioned this pull request Mar 24, 2026

BRP Add schedule.graph endpoint #23452

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Zeophlite added 3 commits March 24, 2026 21:56

Merge render_client example back into client example

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Merge remote-tracking branch 'origin/main' into brp-render

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Fix url

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kfc35 reviewed Mar 25, 2026

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Zeophlite added 5 commits March 25, 2026 21:35

Add PreRenderStartup, PreRender and PostRender schedules

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Merge remote-tracking branch 'origin/main' into brp-render

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Use PreRenderStartup and PostRender schedules

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fmt

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with_method_main/with_method_render

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Zeophlite mentioned this pull request Mar 25, 2026

Add RenderScheduleOrder resource to allow for RenderApp Schedule changes #23513

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Zeophlite added 2 commits March 25, 2026 23:27

Add RenderMainScheduleOrder resource to manage render schedules

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Use RenderMainScheduleOrder

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Zeophlite force-pushed the brp-render branch from 49344d1 to 9e6fbf9 Compare March 25, 2026 15:28

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Rm PreRenderStartup

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run_if run_once on RenderStartup

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Zeophlite force-pushed the brp-render branch from c229b79 to 2205cb8 Compare March 26, 2026 23:41

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Merge remote-tracking branch 'origin/main' into brp-render

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Rever example to main

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Re-add example changes

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Zeophlite commented Mar 26, 2026

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Merge remote-tracking branch 'origin/main' into brp-render

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Fix

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alice-i-cecile requested a review from atlv24 March 28, 2026 03:41

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Zeophlite commented Mar 21, 2026 •

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