@pixi/core/lib/shader/utils/getTestContext.mjs

Core PixiJS

import { ENV } from '@pixi/constants';
import { settings } from '@pixi/settings';

const unknownContext = {};
let context = unknownContext;
function getTestContext() {
  if (context === unknownContext || context?.isContextLost()) {
    const canvas = settings.ADAPTER.createCanvas();
    let gl;
    if (settings.PREFER_ENV >= ENV.WEBGL2) {
      gl = canvas.getContext("webgl2", {});
    }
    if (!gl) {
      gl = canvas.getContext("webgl", {}) || canvas.getContext("experimental-webgl", {});
      if (!gl) {
        gl = null;
      } else {
        gl.getExtension("WEBGL_draw_buffers");
      }
    }
    context = gl;
  }
  return context;
}

export { getTestContext };
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