Method _getFramebufferDepthFormat

src/webgl/p5.RendererGL.js:1609–1654

* To create a WebGL texture, one needs to supply three pieces of information: * the type (the data type each channel will be stored as, e.g. int or float), * the format (the color channels that will each be stored in the previously * specified type, e.g. rgb or rgba), and the internal forma

(framebuffer)

   * @private
   */
  _getFramebufferDepthFormat(framebuffer) {
    let type, format, internalFormat;
    const gl = this.GL;

    if (framebuffer.useStencil) {
      if (framebuffer.depthFormat === constants.FLOAT) {
        type = gl.FLOAT_32_UNSIGNED_INT_24_8_REV;
      } else if (this.webglVersion === constants.WEBGL2) {
        type = gl.UNSIGNED_INT_24_8;
      } else {
        type = gl.getExtension('WEBGL_depth_texture').UNSIGNED_INT_24_8_WEBGL;
      }
    } else {
      if (framebuffer.depthFormat === constants.FLOAT) {
        type = gl.FLOAT;
      } else {
        type = gl.UNSIGNED_INT;
      }
    }

    if (framebuffer.useStencil) {
      format = gl.DEPTH_STENCIL;
    } else {
      format = gl.DEPTH_COMPONENT;
    }

    if (framebuffer.useStencil) {
      if (framebuffer.depthFormat === constants.FLOAT) {
        internalFormat = gl.DEPTH32F_STENCIL8;
      } else if (this.webglVersion === constants.WEBGL2) {
        internalFormat = gl.DEPTH24_STENCIL8;
      } else {
        internalFormat = gl.DEPTH_STENCIL;
      }
    } else if (this.webglVersion === constants.WEBGL2) {
      if (framebuffer.depthFormat === constants.FLOAT) {
        internalFormat = gl.DEPTH_COMPONENT32F;
      } else {
        internalFormat = gl.DEPTH_COMPONENT24;
      }
    } else {
      internalFormat = gl.DEPTH_COMPONENT;
    }

    return { internalFormat, format, type };
  }

  _deleteFramebufferTexture(texture) {
    const gl = this.GL;