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[g-webgl] 支持 WebXR #1664

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xiaoiver opened this issue Apr 9, 2024 · 1 comment

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xiaoiver commented Apr 9, 2024 •

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antvis/g-device-api#38

目前 WebGPU 尚不支持。https://launch.variant3d.com/blog/23-06-state-webxr-on-ios-beyond

Three.js 中 AR 的用法如下：

提供 ARButton：https://github.com/mrdoob/three.js/blob/master/examples/jsm/webxr/ARButton.js
Renderer 创建：https://threejs.org/docs/#api/en/renderers/webxr/WebXRManager

xiaoiver mentioned this issue

feat: support ar in webxr #1665

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xiaoiver commented Apr 26, 2024

WebXR 和 WebGL 使用的坐标系、单位是一致的：原点在屏幕中心，Y 轴正向向上，单位是米
https://developer.mozilla.org/en-US/docs/Web/API/WebXR_Device_API/Geometry#units

而我们的坐标系中原点在左上角，Y 轴正向向下，单位为 CSS Pixel。
因此从 XRView 中获取的 viewMatrix 需要处理

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