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fix(web): pick the 3D device body from the simulator's hardware type - #26884
A renamed simulator shows the generated slab in 3D view even when we ship an Apple model for its hardware. For example, an iPhone 18 Pro simulator named "Termisio Snapshots" gets the box. The viewer picked the model by exact display name (/^iPhone 18 Pro$/), and the device hub only reports the name the user typed.
Fix. On iOS hosts, DeviceHubOperations.list runs xcrun simctl list -j devicetypes devices once (through the host's run, so SSH hosts work too). It maps each simulator UDID to its hardware name and sends that as a new optional DeviceSummary.model. The web viewer resolves from model ?? name. If simctl fails, devices still list, just without model.
More models.resolveDeviceModelId is now one name table. I converted Apple's AR files from the iPhone compare page with the existing scripts/convert-device-model.py:
New: 17 Pro and Pro Max, 17, Air, 17e, 16 Pro and Pro Max, 16 and 16 Plus, 15 and 15 Plus, 14 and 14 Plus.
Mapped to an existing body: 14 Pro and 15 Pro use 16 Pro (same back and screen aspect), 16e uses 17e, and iPad Pro 13 M4 uses M5.
Each entry in sources.json records the source URL, checksum, chosen body and screen nodes, and Blender version. The converter gained excludeNodes because the Air's source file stacks every colour variant's back glass. Every new GLB passes the same screen-normalization checks createImportedPhoneScene runs.
Tradeoffs for maintainers:
Repo size: the models folder grows to 38 MB. Only the matching GLB downloads, and only when 3D view opens.
License: these are Apple assets with no redistribution license, the same status sources.json already records for the existing five.
Evidence
Same renamed simulator ("Termisio Snapshots", type iPhone 18 Pro), web dev build, 3D view.
Before (main)
After
After this change the network panel shows iphone-18-pro.glb loading. On main, no GLB is requested.
Blender renders of the converted models (front and back):
Checks:
vp test run packages/client-runtime/src/device/model.test.ts apps/server/src/device/DeviceHubOperations.test.ts: 15 passed. This covers a renamed simulator getting its hardware name, a simctl failure still listing devices, and the name table.
vp run check:changed: format, lint, knip, typecheck and graphql pass. Its test step hung locally on the device browser tests, which need a browser runner the worktree didn't have, so CI has to cover those.
Not checked: the new models live in the app, except iPhone 18 Pro. I only had iPhone 18 Pro simulators booted. Android is unchanged, since resolveDeviceModelId stays iOS-only. Mobile has no 3D viewer.
A renamed simulator, such as "iPhone (clean)", fell back to the generated
box in 3D view because the model was chosen by display name. The server now
reads each simulator's device type from simctl and sends its hardware name
as `model`; the viewer resolves from that first.
Also adds Apple AR models for iPhone 17 Pro/Pro Max, 17, Air, 17e,
16 Pro/Pro Max, 16/16 Plus, 15/15 Plus and 14/14 Plus, and maps 14/15 Pro
to the 16 Pro body, 16e to 17e, and iPad Pro 13 M4 to M5.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Macroscope's review found this PR requires human approval — The hardware-based rendering change has a graceful fallback, but it also ships 13 additional Apple-derived models with no established redistribution license. Their distribution rights need confirmation before shipping.
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Walkthrough
Simulator listings now include hardware model names based on simulator device types. Device views use those names to select hardware models, keyboard sources, and device shapes. The model resolver, asset catalog, and model-loading pipeline also support additional device models and geometry processing.
Changes: Simulator hardware model display
Layer / File(s)
Summary
Add simulator models to device summaries packages/contracts/src/device.ts, apps/server/src/device/DeviceHubOperations.ts, apps/server/src/device/DeviceHubOperations.test.ts
DeviceSummary adds an optional hardware model field. Simulator listing maps simctl device types to simulator UDIDs and adds matching model names. Tests cover matched and unknown device types, plus simctl failure.
Resolve hardware names to model assets packages/client-runtime/src/device/model.ts, packages/client-runtime/src/device/model.test.ts, apps/web/src/components/device/deviceModels.ts
The model resolver adds iPhone names and aliases, removes a trailing memory suffix before matching, and returns null for unmatched names. The model catalog adds 13 iPhone entries. Tests cover supported and unmatched names.
Process and load device model assets apps/web/src/components/device/models/sources.json, scripts/convert-device-model.py, packages/client-runtime/src/device/modelScene.ts, packages/client-runtime/src/device/modelScene.test.ts, docs/internals/devices.md
Model metadata and the converter support hidden-node filtering, surface offsets, vertex welding, and meshopt compression. The runtime configures Meshopt decoding and bakes display-mesh transforms into float geometry. Tests and internal documentation cover these changes.
Use hardware names in device views apps/web/src/components/device/DeviceStreamView.tsx, apps/web/src/components/device/DeviceWorkspace.tsx, apps/web/src/components/preview/ThreadPreviewMiniPlayer.tsx, docs/user/devices.md
DeviceWorkspace and the preview mini player pass the device model to DeviceStreamView. The view uses it for model selection, keyboard source, device shape, and phone viewport selection. Documentation describes model selection for renamed simulators.
sequenceDiagram
participant DeviceHubOperations
participant simctl
participant DeviceWorkspace
participant DeviceStreamView
DeviceHubOperations->>simctl: Retrieve simulator device types and UDIDs
simctl-->>DeviceHubOperations: Return device-type names and simulator UDIDs
DeviceHubOperations->>DeviceWorkspace: Provide simulator summary with model name
DeviceWorkspace->>DeviceStreamView: Pass deviceModel
DeviceStreamView->>DeviceStreamView: Select model and rendering options
Loading
Possibly related issues
pingdotgg/t3code#25707 — The change provides fallback behavior when simctl fails, but does not add the timeout or retain the last list described by the issue.
Suggested reviewers:juliusmarminge, t3dotgg
Merge Risk: Minimal · up to 1d97c
No merge-blocking issue was established.
Pre-merge checks: 3 · 1
Failed checks: 1 warning
Check name
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Explanation
Resolution
Description check
The description covers the problem (renamed simulators show the generic slab), the fix (simctl hardware-name lookup, the new optional model field, and the web fallback), the new model mappings, and ve…
Add a Scope and approval section. Link the triaged bug issue or the discussion with explicit maintainer approval, including the approval comment. If the change qualifies as a very small, focused fix of an obvious bug, explain why it qualifi…
Passed checks: 3 passed
Check name
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Title check
The title "fix(web): pick the 3D device body from the simulator's hardware type" matches the main change. The PR makes the 3D viewer choose the device body from the simulator's hardware type instead o…
Linked Issues check
Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check
Check skipped because no linked issues were found for this pull request.
Full details: Title check
Explanation
The title "fix(web): pick the 3D device body from the simulator's hardware type" matches the main change. The PR makes the 3D viewer choose the device body from the simulator's hardware type instead of its user-assigned display name. It uses a conventional commit prefix and stays within the 3D device model selection behavior, so it is accurate and specific.
Full details: Description check
Explanation
The description covers the problem (renamed simulators show the generic slab), the fix (simctl hardware-name lookup, the new optional model field, and the web fallback), the new model mappings, and verification steps with the exact commands and results. It also lists the tradeoffs (repo size and license) and what was not checked. It does not link a triaged issue or maintainer approval in the Scope and approval section, and the template asks for that. The Problem and Change sections are labeled in prose rather than as the template headings, but the content is present. Because the Scope and approval requirement is unmet, the description is not fully compliant. Still, the rest of the description is mostly complete.
Resolution
Add a Scope and approval section. Link the triaged bug issue or the discussion with explicit maintainer approval, including the approval comment. If the change qualifies as a very small, focused fix of an obvious bug, explain why it qualifies without a prior issue. Also label the Problem, Change, and Verification sections with the template headings so the structure matches the repository template.
Finishing Touches: 💡 1
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Resolve merge conflict in branch feat/device-models-by-type
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Actionable comments posted: 1
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Inline comments:
Review comments at @apps/server/src/device/DeviceHubOperations.ts:
- Line 108: Update the `simctl` invocation in `decodeSimctlList` to request the
default JSON listing with `list -j`, rather than passing both `devicetypes` and
`devices` as section arguments. Ensure the test runner returns its fixture only
for the expected argument list so an invalid invocation fails the test.
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The 18 device GLBs were 39.9 MB (22.3 MB gzipped), almost all
uncompressed geometry, and the iPhone 16 and 16 Plus camera glass
z-fought with the layer beneath it.
- Compress geometry with EXT_meshopt_compression on one scene-wide
16-bit grid. Per-mesh grids round Apple's coincident layers apart and
z-fight. The loader registers three's MeshoptDecoder and bakes display
meshes back into float model-space geometry, which the screen checks,
UVs and touch projection need.
- Drop 478 parts that never change a pixel (sources.json hiddenNodes).
- Push the iPhone 16 and 16 Plus glass shells 0.0003 units outward
(sources.json surfaceOffsets) so they stop crossing the base layer.
The converter applies both new fields; docs/internals/devices.md records
the pipeline constraints. Models now total 12.0 MB (8.3 MB gzipped).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
🤖 Claude Opus 5.5 responding on behalf of DominikScholz
@Kaloyanes I opened Kaloyanes#12 against this branch. It addresses the repo-size tradeoff here before the models land on main:
The 18 models drop from 39.9 MB to 12.0 MB (22.3 to 8.3 MB gzipped): meshopt compression on one scene-wide 16-bit grid, plus removal of 478 parts that never change a pixel. Close-up renders average 0.06/255 per pixel against the originals.
It fixes the iPhone 16 and 16 Plus camera glass, which z-fights even uncompressed. Their blue glass shell crosses the white layer beneath it, and surfaceOffsets pushes it 0.0003 units outward.
convert-device-model.py applies both new sources.json fields (checked with Blender 5.2.2 on the iPhone 16 source). Details and before/after renders are in that PR. Merging it into this branch keeps #26884 one PR.
This PR does not meet the one-problem requirement. The hardware-identity lookup repairs renamed simulators using existing shipped bodies, while the new iPhone 14–17/Air model assets and model-name table expansion separately add bodies for previously unsupported hardware. Neither is required for the other.
Split the hardware-identity repair from the additional model catalog, keeping the renamed-simulator report and its before/after evidence with the repair. Please link the resulting evidence and request reconsideration under the closure and reconsideration guide.
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A renamed simulator shows the generated slab in 3D view even when we ship an Apple model for its hardware. For example, an iPhone 18 Pro simulator named "Termisio Snapshots" gets the box. The viewer picked the model by exact display name (
/^iPhone 18 Pro$/), and the device hub only reports the name the user typed.Fix. On iOS hosts,
DeviceHubOperations.listrunsxcrun simctl list -j devicetypes devicesonce (through the host'srun, so SSH hosts work too). It maps each simulator UDID to its hardware name and sends that as a new optionalDeviceSummary.model. The web viewer resolves frommodel ?? name. If simctl fails, devices still list, just withoutmodel.More models.
resolveDeviceModelIdis now one name table. I converted Apple's AR files from the iPhone compare page with the existingscripts/convert-device-model.py:Each entry in
sources.jsonrecords the source URL, checksum, chosen body and screen nodes, and Blender version. The converter gainedexcludeNodesbecause the Air's source file stacks every colour variant's back glass. Every new GLB passes the same screen-normalization checkscreateImportedPhoneSceneruns.Tradeoffs for maintainers:
sources.jsonalready records for the existing five.Evidence
Same renamed simulator ("Termisio Snapshots", type iPhone 18 Pro), web dev build, 3D view.
After this change the network panel shows
iphone-18-pro.glbloading. On main, no GLB is requested.Blender renders of the converted models (front and back):
Checks:
vp test run packages/client-runtime/src/device/model.test.ts apps/server/src/device/DeviceHubOperations.test.ts: 15 passed. This covers a renamed simulator getting its hardware name, a simctl failure still listing devices, and the name table.vp run check:changed: format, lint, knip, typecheck and graphql pass. Its test step hung locally on the device browser tests, which need a browser runner the worktree didn't have, so CI has to cover those.Not checked: the new models live in the app, except iPhone 18 Pro. I only had iPhone 18 Pro simulators booted. Android is unchanged, since
resolveDeviceModelIdstays iOS-only. Mobile has no 3D viewer.Model: Claude Opus 5.5 in Claude Code (T3 Code).