lvcabral/brs-engine v2.4.0 on GitHub

This release brings 86+ improvements and fixes, focused on hardening the multi-threaded SceneGraph runtime and adding real network I/O. The engine gains fully functional roStreamSocket (TCP) and roDataGramSocket (UDP) support on the Node.js/CLI package, ECP sgrendezvous rendezvous tracking, and a --log-level CLI flag for quieter or more verbose console output. The SceneGraph extension's renderNode is now split into separate layout and paint passes that prune settled subtrees for a major performance gain, cross-thread Task handling is hardened (script-scope m, m.global/m.top references, findNode(), field sync and pre-launch port delivery all now survive a Task launch correctly), and dozens of focus, layout and rendering fixes land across LayoutGroup, PosterGrid, RowList, ArrayGrid, TextEditBox, ScrollingLabel, TimeGrid, Animation and the Dynamic Keyboards. A preliminary roAnimatedImage/AnimatedImage implementation adds animated WebP and Lottie playback ahead of Roku OS 15.3's official documentation. The browser API adds frame-change notifications with direct display-buffer access and a loading startup event. Read the full release notes below for more details.

Release Changes

Core Engine

(brs) Memoize text measurement per roFont instance by @lvcabral in #1112
(brs) Build roString's methods on first access instead of per instance by @lvcabral in #1113
(draw2d) Fixed three 9-patch sizing bugs — Poster display modes, marker parsing, and mid-render re-measure by @lvcabral in #1128
(brs) Added a logLevel parameter to filter output messages in OutputProxy by @lvcabral in #1146
(brs) Boxed callFunc() arguments the way Node.get() already does, with regression tests by @lvcabral in #1150
(brs) Support the roRegex "x" (extended/free-spacing) flag by @lvcabral in #1159
(brs) Real UDP send/receive/broadcast for roDataGramSocket on the Node.js/CLI package by @lvcabral in #1164
(brs) Implemented real TCP support for roStreamSocket on the Node.js/CLI package by @lvcabral in #1170
(draw2d) Made blendColor's multiply a true multiply instead of fabricating one by @lvcabral in #1173
(brs) Implemented roAnimatedImage for animated WebP/Lottie playback, a preliminary build ahead of Roku OS 15.3's published spec by @lvcabral in #1182

Browser API

(api) Added frame notification (setFrameNotify) and direct display-buffer access (getDisplayBuffer) by @lvcabral in #1149
(api) Preserve rendezvous tracking state across resets in the shared array by @lvcabral in #1163
(api) Added the loading event, triggered on app startup by @lvcabral in #1176

Node.js Library and CLI

(cli) Resolve locale-relative manifest icon and splash paths by @lvcabral in #1089
(cli) Notify the user when a new brs-node version is published by @lvcabral in #1103
(cli) Expose SceneGraph rendezvous tracing to the CLI and browser API by @lvcabral in #1104
(cli) Let the ECP server bind a port other than 8060 by @lvcabral in #1106
(cli) Add sfx to the valid message types ignored in handleStringMessage by @lvcabral in #1107
(cli) Terminate the app when a Task thread hits an uncaught error by @lvcabral in #1111
(cli) Added a --log-level flag and a loglevel REPL command by @lvcabral in #1141
(cli) Implemented the ECP sgrendezvous rendezvous-tracking endpoints by @lvcabral in #1148
(cli) Upgraded node-canvas to v4-rc2 and removed the whitespace-only text workaround by @lvcabral in #1166

SceneGraph Extension (`brs-scenegraph` release v0.4.0)

(rsg) Defer init-time focusedChild notifications to the message loop by @lvcabral in #1090
(rsg) Correct mid-render boundingRect() measurement of composite nodes by @lvcabral in #1091
(rsg) Carry a custom node's script-scope m across threads by @lvcabral in #1092
(rsg) Deliver a Task's pre-launch port events to its thread by @lvcabral in #1093
(rsg) Let m.global.findNode() reach the scene tree by @lvcabral in #1094
(rsg) Parent the global node to the Scene by @lvcabral in #1095
(rsg) Keep m.global's own descendants out of its findNode() search by @lvcabral in #1096
(rsg) Resolve findNode() against the executing component's scope by @lvcabral in #1097
(rsg) Cross script-scope m as live references, only on owner transfer by @lvcabral in #1098
(rsg) Repair the release build broken by the findNode() global check by @lvcabral in #1099
(rsg) Reference m.global's node fields in the Task launch payload by @lvcabral in #1100
(rsg) Stop findNode() searching a node that has no component ancestor by @lvcabral in #1101
(rsg) Don't crash when a Task sets a node-valued field to invalid by @lvcabral in #1102
(rsg) Made cross-thread Task field sync and port observers work between threads by @lvcabral in #1105
(rsg) Notify observing Task threads when content held by a field changes by @lvcabral in #1108
(rsg) Deliver a Task field set made just before launch exactly once by @lvcabral in #1110
(rsg) Time out a rendezvous only when the render thread stops running by @lvcabral in #1115
(rsg) Split renderNode into layout/paint passes and prune settled subtrees (major performance gain) by @lvcabral in #1120
(rsg) Match device behavior for LayoutGroup's enum fields, spacing and size by @lvcabral in #1122
(rsg) Keep script-scope references to global/top alive across a Task launch by @lvcabral in #1123
(rsg) Resolve script-scope references into the top/global subtrees on Task launch by @lvcabral in #1124
(rsg) Stop a directional key on an empty RowList from crashing the app by @lvcabral in #1125
(rsg) Commit a focus change before notifying, and ignore a re-grab from a focus-loss observer by @lvcabral in #1127
(rsg) Bind observer callback parameters the way a device does by @lvcabral in #1129
(rsg) Normalize hex-string elements in colorarray fields by @lvcabral in #1130
(rsg) RowList honors vertFocusAnimationStyle when scrolling rows by @lvcabral in #1131
(rsg) Honor clippingRect on every renderable node by @lvcabral in #1133
(rsg) Report per-row extents in a grid's boundingRect by @lvcabral in #1134
(rsg) Made Animation control conform to a device by @lvcabral in #1136
(rsg) Honor per-row layout in LabelList and rotate every node's translation by @lvcabral in #1137
(rsg) Match a device's PosterGrid extent by @lvcabral in #1138
(rsg) Match Roku's console format for rendezvous tracing by @lvcabral in #1140
(rsg) Report a grid item's sub-rect as the bare item component by @lvcabral in #1142
(rsg) Report a PosterGrid's asymmetric vertical outset by @lvcabral in #1144
(rsg) Report an alias field's own name in observer events by @lvcabral in #1151
(rsg) Add missing documented ContentNode fields by @lvcabral in #1152
(rsg) ScrollingLabel reports the full maxWidth as its measured width by @lvcabral in #1154
(rsg) Fixed a PosterGrid caption placement regression from #1144 by @lvcabral in #1156
(rsg) Fixed the Overhang default logo overlapping the title/divider on a resolution-mismatched device by @lvcabral in #1157
(rsg) LayoutGroup counts a hidden child's height in a vertical stack by @lvcabral in #1158
(rsg) Fixed cross-thread AppendChildren duplicating a node instead of moving it by @lvcabral in #1160
(rsg) Fixed stale item visuals after an in-place ArrayGrid/RowList content reorder by @lvcabral in #1161
(rsg) Fixed TimeGrid content-mutation staleness, navigation, and loading feedback by @lvcabral in #1162
(rsg) Fixed TextEditBox text/cursor mispositioning with a custom backgroundUri by @lvcabral in #1165
(rsg) Fixed TextEditBox discarding the app-provided height with a custom background by @lvcabral in #1167
(rsg) Update currFocusRow/currFocusColumn before itemFocused fires by @lvcabral in #1168
(rsg) Normalize key actions/icons and add a keySelected() handler for the Dynamic Keyboards by @lvcabral in #1169
(rsg) Stop painting fully transparent subtrees, and honor a 0-alpha blend color by @lvcabral in #1172
(rsg) Gave ArrayGrid a focusRect hook so subclasses specialize geometry only by @lvcabral in #1174
(rsg) Distinguish a layout pass from a paint frame whose drawing was suppressed by @lvcabral in #1175
(rsg) Drop a backwards focus steal raised via a container redirect by @lvcabral in #1177
(rsg) Apply the scale field to drawn content, bounding rect, and remaining text nodes by @lvcabral in #1179
(rsg) Implemented Poster loadDisplayMode="limitSize" by @lvcabral in #1180
(rsg) Implemented the SceneGraph AnimatedImage node, a preliminary build ahead of Roku OS 15.3's published spec by @lvcabral in #1182)

Chores, Build and Dependencies

(chore) Migrate the test runner from Jest to Vitest by @lvcabral in #1087
(docs) Finish the Jest-to-Vitest cleanup and fix stale http links by @lvcabral in #1088
(docs) Proposed splitting renderNode into layout and paint passes by @lvcabral in #1114
(docs) Split CLAUDE.md into a core map plus on-demand deep dives by @lvcabral in #1116
(chore) Removed the BRS_PRUNE_VERIFY harness and updated docs by @lvcabral in #1121
(chore) Saved several probe apps into test/simulator/probes by @lvcabral in #1143
(test) Added LayoutGroup layoutDirection and itemSpacings probes by @lvcabral in #1145
(chore) Split cli.test.js into focused suites and de-flaked the Task-pool CLI test by @lvcabral in #1153
Bump fast-uri from 3.1.4 to 3.1.5 by @dependabot[bot] in #1155
(docs) Updated limitations for Roku SceneGraph and network components by @lvcabral in #1171

Full Changelog: v2.3.0...v2.4.0

lvcabral/brs-engine v2.4.0 v2.4.0 - Real Sockets, Task Hardening and Rendering Fixes on GitHub