@pixi/core/lib/batch/BatchSystem.mjs

import { ExtensionType, extensions } from '@pixi/extensions';
import { ObjectRenderer } from './ObjectRenderer.mjs';

class BatchSystem {
  constructor(renderer) {
    this.renderer = renderer;
    this.emptyRenderer = new ObjectRenderer(renderer);
    this.currentRenderer = this.emptyRenderer;
  }
  setObjectRenderer(objectRenderer) {
    if (this.currentRenderer === objectRenderer) {
      return;
    }
    this.currentRenderer.stop();
    this.currentRenderer = objectRenderer;
    this.currentRenderer.start();
  }
  flush() {
    this.setObjectRenderer(this.emptyRenderer);
  }
  reset() {
    this.setObjectRenderer(this.emptyRenderer);
  }
  copyBoundTextures(arr, maxTextures) {
    const { boundTextures } = this.renderer.texture;
    for (let i = maxTextures - 1; i >= 0; --i) {
      arr[i] = boundTextures[i] || null;
      if (arr[i]) {
        arr[i]._batchLocation = i;
      }
    }
  }
  boundArray(texArray, boundTextures, batchId, maxTextures) {
    const { elements, ids, count } = texArray;
    let j = 0;
    for (let i = 0; i < count; i++) {
      const tex = elements[i];
      const loc = tex._batchLocation;
      if (loc >= 0 && loc < maxTextures && boundTextures[loc] === tex) {
        ids[i] = loc;
        continue;
      }
      while (j < maxTextures) {
        const bound = boundTextures[j];
        if (bound && bound._batchEnabled === batchId && bound._batchLocation === j) {
          j++;
          continue;
        }
        ids[i] = j;
        tex._batchLocation = j;
        boundTextures[j] = tex;
        break;
      }
    }
  }
  destroy() {
    this.renderer = null;
  }
}
BatchSystem.extension = {
  type: ExtensionType.RendererSystem,
  name: "batch"
};
extensions.add(BatchSystem);

export { BatchSystem };
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