Method updateTextures

src/ExtSplats.ts:581–622

()

  // Check if source texture needs to be created/updated
  private updateTextures() {
    if (this.textures[0] !== ExtSplats.emptyTexture) {
      const { width, height, depth } = this.textures[0].image;
      if (this.maxSplats !== width * height * depth) {
        // The existing source texture isn't the right size, so dispose it
        this.textures[0].dispose();
        this.textures[0] = ExtSplats.emptyTexture;
        this.textures[1].dispose();
        this.textures[1] = ExtSplats.emptyTexture;
      }
    }
    if (this.textures[0] === ExtSplats.emptyTexture) {
      // Allocate a new source texture of the right size
      const { width, height, depth } = getTextureSize(this.maxSplats);
      this.textures[0] = newUint32ArrayTexture(
        this.extArrays[0],
        width,
        height,
        depth,
        THREE.RGBAIntegerFormat,
        THREE.UnsignedIntType,
        "RGBA32UI",
      );
      this.textures[1] = newUint32ArrayTexture(
        this.extArrays[1],
        width,
        height,
        depth,
        THREE.RGBAIntegerFormat,
        THREE.UnsignedIntType,
        "RGBA32UI",
      );
    } else if (
      this.extArrays[0].buffer !== this.textures[0].image.data.buffer
    ) {
      this.textures[0].image.data = new Uint8Array(this.extArrays[0].buffer);
      this.textures[1].image.data = new Uint8Array(this.extArrays[1].buffer);
      // Indicate to Three.js that the source textures needs to be uploaded to the GPU
      this.textures[0].needsUpdate = true;
      this.textures[1].needsUpdate = true;
    }
  }

  extractSplats(indices: Uint32Array, pageColoring: boolean) {
    const maxSplats = getTextureSize(indices.length).maxSplats;