@pixi/core/lib/framebuffer/Framebuffer.js

Core PixiJS

"use strict";
var constants = require("@pixi/constants"), runner = require("@pixi/runner"), BaseTexture = require("../textures/BaseTexture.js");
class Framebuffer {
  /**
   * @param width - Width of the frame buffer
   * @param height - Height of the frame buffer
   */
  constructor(width, height) {
    if (this.width = Math.round(width), this.height = Math.round(height), !this.width || !this.height)
      throw new Error("Framebuffer width or height is zero");
    this.stencil = !1, this.depth = !1, this.dirtyId = 0, this.dirtyFormat = 0, this.dirtySize = 0, this.depthTexture = null, this.colorTextures = [], this.glFramebuffers = {}, this.disposeRunner = new runner.Runner("disposeFramebuffer"), this.multisample = constants.MSAA_QUALITY.NONE;
  }
  /**
   * Reference to the colorTexture.
   * @readonly
   */
  get colorTexture() {
    return this.colorTextures[0];
  }
  /**
   * Add texture to the colorTexture array.
   * @param index - Index of the array to add the texture to
   * @param texture - Texture to add to the array
   */
  addColorTexture(index = 0, texture) {
    return this.colorTextures[index] = texture || new BaseTexture.BaseTexture(null, {
      scaleMode: constants.SCALE_MODES.NEAREST,
      resolution: 1,
      mipmap: constants.MIPMAP_MODES.OFF,
      width: this.width,
      height: this.height
    }), this.dirtyId++, this.dirtyFormat++, this;
  }
  /**
   * Add a depth texture to the frame buffer.
   * @param texture - Texture to add.
   */
  addDepthTexture(texture) {
    return this.depthTexture = texture || new BaseTexture.BaseTexture(null, {
      scaleMode: constants.SCALE_MODES.NEAREST,
      resolution: 1,
      width: this.width,
      height: this.height,
      mipmap: constants.MIPMAP_MODES.OFF,
      format: constants.FORMATS.DEPTH_COMPONENT,
      type: constants.TYPES.UNSIGNED_SHORT
    }), this.dirtyId++, this.dirtyFormat++, this;
  }
  /** Enable depth on the frame buffer. */
  enableDepth() {
    return this.depth = !0, this.dirtyId++, this.dirtyFormat++, this;
  }
  /** Enable stencil on the frame buffer. */
  enableStencil() {
    return this.stencil = !0, this.dirtyId++, this.dirtyFormat++, this;
  }
  /**
   * Resize the frame buffer
   * @param width - Width of the frame buffer to resize to
   * @param height - Height of the frame buffer to resize to
   */
  resize(width, height) {
    if (width = Math.round(width), height = Math.round(height), !width || !height)
      throw new Error("Framebuffer width and height must not be zero");
    if (!(width === this.width && height === this.height)) {
      this.width = width, this.height = height, this.dirtyId++, this.dirtySize++;
      for (let i = 0; i < this.colorTextures.length; i++) {
        const texture = this.colorTextures[i], resolution = texture.resolution;
        texture.setSize(width / resolution, height / resolution);
      }
      if (this.depthTexture) {
        const resolution = this.depthTexture.resolution;
        this.depthTexture.setSize(width / resolution, height / resolution);
      }
    }
  }
  /** Disposes WebGL resources that are connected to this geometry. */
  dispose() {
    this.disposeRunner.emit(this, !1);
  }
  /** Destroys and removes the depth texture added to this framebuffer. */
  destroyDepthTexture() {
    this.depthTexture && (this.depthTexture.destroy(), this.depthTexture = null, ++this.dirtyId, ++this.dirtyFormat);
  }
}
exports.Framebuffer = Framebuffer;
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