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Bevy plugin for loading VRM avatars.

Home Page: https://unavi-xyz.github.io/bevy_vrm/

License: Apache License 2.0

Nix 4.52% Rust 87.90% WGSL 6.55% HTML 0.87% CSS 0.16%

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vitri-ent thebutlah malekire schmarni-dev anthonybtedesco

bevy_vrm's Issues

[mtoon] UV Animation

https://github.com/vrm-c/vrm-specification/blob/master/specification/VRMC_materials_mtoon-1.0/README.md#uv-animation

error[B0002] when attempting to run load_vrm example

I have a brand new binary project called bevy_example
Dependencies
bevy = "0.13.0"
bevy_vrm = "0.0.8"

I have replaced main.rs with the code written in the load_vrm example.
I have changed the asset directory path to point to asset directory

It compiles fine, but exits imminently with an error in draw_springbones

│[m@jahl bevy_example]$ cargo run                                                                                                                                                                                                                                               │
│    Finished dev [unoptimized + debuginfo] target(s) in 0.14s                                                                                                                                                                                                                  │
│     Running `target/debug/bevy_example`                                                                                                                                                                                                                                       │
│2024-03-09T21:37:05.727246Z  INFO bevy_winit::system: Creating new window "App" (0v1)                                                                                                                                                                                          │
│2024-03-09T21:37:05.727802Z  INFO log: Guessed window scale factor: 1                                                                                                                                                                                                          │
│2024-03-09T21:37:05.875800Z  INFO bevy_render::renderer: AdapterInfo { name: "AMD Radeon RX 5600M (RADV NAVI10)", vendor: 4098, device: 29471, device_type: DiscreteGpu, driver: "radv", driver_info: "Mesa 24.0.2-manjaro1.1", backend: Vulkan }                              │
│2024-03-09T21:37:06.364992Z  INFO bevy_diagnostic::system_information_diagnostics_plugin::internal: SystemInfo { os: "Linux 23.1.3 Manjaro Linux", kernel: "6.6.19-1-MANJARO", cpu: "AMD Ryzen 7 4800H with Radeon Graphics", core_count: "8", memory: "7.1 GiB" }             │
│thread 'main' panicked at /home/m/.cargo/registry/src/index.crates.io-6f17d22bba15001f/bevy_ecs-0.13.0/src/system/system_param.rs:542:13:                                                                                                                                      │
│error[B0002]: ResMut<bevy_gizmos::config::GizmoConfigStore> in system bevy_example::draw_spring_bones conflicts with a previous Res<bevy_gizmos::config::GizmoConfigStore> access. Consider removing the duplicate access.                                                     │
│note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace                                                                                                                                                                                                  │
│Encountered a panic in system `bevy_app::main_schedule::Main::run_main`!

However if I comment the 3 lines dealing with the config it launches okay, just without the change in the config

[mtoon] Global illumination

https://github.com/vrm-c/vrm-specification/blob/master/specification/VRMC_materials_mtoon-1.0/README.md#global-illumination

Current global illumination is not at all to spec, need to figure out how to get world lighting for a given point

[mtoon] Half the model is white

[mtoon] shading_shift_texture

Webgl error?

When running https://github.com/kayhhh/vrm-viewer using the latest version, I get a wgpu error in the web build. Not sure what it means but I assume its something with the mtoon shader.

Read custom extensions

Alright so turns out this won't be quite as easy as I was hoping.

Bevy doesn't provide a good way to access custom glTF extensions, because the underlying gltf crate doesn't either (see gltf-rs/gltf#231).

Soooo I think we either have to:

Use a different glTF loader (such as https://github.com/expenses/goth-gltf/) and not make use of the built in bevy loader

Use the built in loader, then add a step after where we load the model a second time (with a different loader) and extract the VRM data

I think option 2 is best. It is less efficient as we have to load the model twice, but I don't think it make sense to maintain a second glTF loading pipeline when we already have one in bevy.

Eventually we can work on getting custom extensions supported in gltf, then in bevy, but for the short term I'll try option 2.

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