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node_modules/pixi.js/lib/utils/browser/detectVideoAlphaMode.d.ts

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+import type { ALPHA_MODES } from '../../rendering/renderers/shared/texture/const';
+/**
+ * Helper for detecting the correct alpha mode for video textures.
+ * For some reason, some browsers/devices/WebGL implementations premultiply the alpha
+ * of a video before and then a second time if `UNPACK_PREMULTIPLY_ALPHA_WEBGL`
+ * is true. So the video is premultiplied twice if the alpha mode is `UNPACK`.
+ * In this case we need the alpha mode to be `PMA`. This function detects
+ * the upload behavior by uploading a white 2x2 webm with 50% alpha
+ * without `UNPACK_PREMULTIPLY_ALPHA_WEBGL` and then checking whether
+ * the uploaded pixels are premultiplied.
+ * @memberof utils
+ * @function detectVideoAlphaMode
+ * @returns {Promise<ALPHA_MODES>} The correct alpha mode for video textures.
+ */
+export declare function detectVideoAlphaMode(): Promise<ALPHA_MODES>;