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[Impeller Scene] Add offline mesh importer #37981

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merged 5 commits into from
Dec 1, 2022

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bdero
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@bdero bdero commented Nov 30, 2022

  • scene_importer lib and executable. Everything is in place aside from actually converting the GLTF data. Structured with the assumption that we may add importers for more formats in the future.
  • GN jazz to run the importer.
  • Simple flatbuffer with only a single mesh, no bone transforms/weights or animations right now -- it will be appropriate to extend this into a more comprehensive scene description down the road.
  • Example GLTF binary mesh fixture containing a 3D Flutter logo with bezeled edges. This is a simplified version of the PBR textured mesh I showed off a couple of times in the past. Exported with normals, tangents, colors, and a good quality UV unwrap. I'm not bothering to import vertex colors straight away, but it'll come in handy for testing stuff later on.

@bdero bdero self-assigned this Nov 30, 2022
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It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption to this rule, contact Hixie on the #hackers channel in Chat (don't just cc him here, he won't see it! He's on Discord!).

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Gold has detected about 1 new digest(s) on patchset 4.
View them at https://flutter-engine-gold.skia.org/cl/github/37981

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Golden file changes have been found for this pull request. Click here to view and triage (e.g. because this is an intentional change).

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Changes reported for pull request #37981 at sha a203c1d

impeller/scene/importer/BUILD.gn Outdated Show resolved Hide resolved
impeller/scene/importer/BUILD.gn Outdated Show resolved Hide resolved
impeller/scene/importer/BUILD.gn Outdated Show resolved Hide resolved
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]
}

group("importer") {
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Nit: On naming, perhaps just scenec like impellerc. importer is rather generic.

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Ah yeah, scenec seems good. My mind kept getting stuck on geometryc which I didn't like very much.

texture_coords: Vec2;
}

table Mesh {
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We'll probably have to sketch this out some more but this is a start!

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Indeed, one triangle mesh to fake it till we make it. Materials, fuller scene description, bones, weights, and animation will all be necessary soon in my estimation. :)

Co-authored-by: Zachary Anderson <[email protected]>
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May I land this?

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bdero commented Dec 1, 2022

Yeah, I'm in the middle of renaming everything to be SceneC instead of "Scene Importer" at the moment, but I can just land that as a separate patch later today.

@bdero bdero merged commit 972e8d8 into flutter:main Dec 1, 2022
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Dec 1, 2022
auto-submit bot pushed a commit to flutter/flutter that referenced this pull request Dec 1, 2022
…116384)

* 4199b108b Roll Skia from 6f6793b298ff to b273c4c744be (1 revision) (flutter/engine#38009)

* 972e8d844 [Impeller Scene] Add offline mesh importer (flutter/engine#37981)

* abb68f40b Fix: The Background and Overlay ImageView leak (flutter/engine#37424)
mit-mit pushed a commit to mit-mit/flutter that referenced this pull request Dec 6, 2022
…lutter#116384)

* 4199b108b Roll Skia from 6f6793b298ff to b273c4c744be (1 revision) (flutter/engine#38009)

* 972e8d844 [Impeller Scene] Add offline mesh importer (flutter/engine#37981)

* abb68f40b Fix: The Background and Overlay ImageView leak (flutter/engine#37424)
shogohida pushed a commit to shogohida/flutter that referenced this pull request Dec 7, 2022
…lutter#116384)

* 4199b108b Roll Skia from 6f6793b298ff to b273c4c744be (1 revision) (flutter/engine#38009)

* 972e8d844 [Impeller Scene] Add offline mesh importer (flutter/engine#37981)

* abb68f40b Fix: The Background and Overlay ImageView leak (flutter/engine#37424)
gspencergoog pushed a commit to gspencergoog/flutter that referenced this pull request Jan 19, 2023
…lutter#116384)

* 4199b108b Roll Skia from 6f6793b298ff to b273c4c744be (1 revision) (flutter/engine#38009)

* 972e8d844 [Impeller Scene] Add offline mesh importer (flutter/engine#37981)

* abb68f40b Fix: The Background and Overlay ImageView leak (flutter/engine#37424)
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4 participants