Function parseImage

lib/texture.js:695–830

(image, options)

  }

  function parseImage (image, options) {
    var data = null
    if (isPixelData(options)) {
      data = options
    } else if (options) {
      check.type(options, 'object', 'invalid pixel data type')
      parseFlags(image, options)
      if ('x' in options) {
        image.xOffset = options.x | 0
      }
      if ('y' in options) {
        image.yOffset = options.y | 0
      }
      if (isPixelData(options.data)) {
        data = options.data
      }
    }

    check(
      !image.compressed ||
      data instanceof Uint8Array,
      'compressed texture data must be stored in a uint8array')

    if (options.copy) {
      check(!data, 'can not specify copy and data field for the same texture')
      var viewW = contextState.viewportWidth
      var viewH = contextState.viewportHeight
      image.width = image.width || (viewW - image.xOffset)
      image.height = image.height || (viewH - image.yOffset)
      image.needsCopy = true
      check(image.xOffset >= 0 && image.xOffset < viewW &&
            image.yOffset >= 0 && image.yOffset < viewH &&
            image.width > 0 && image.width <= viewW &&
            image.height > 0 && image.height <= viewH,
      'copy texture read out of bounds')
    } else if (!data) {
      image.width = image.width || 1
      image.height = image.height || 1
      image.channels = image.channels || 4
    } else if (isTypedArray(data)) {
      image.channels = image.channels || 4
      image.data = data
      if (!('type' in options) && image.type === GL_UNSIGNED_BYTE) {
        image.type = typedArrayCode(data)
      }
    } else if (isNumericArray(data)) {
      image.channels = image.channels || 4
      convertData(image, data)
      image.alignment = 1
      image.needsFree = true
    } else if (isNDArrayLike(data)) {
      var array = data.data
      if (!Array.isArray(array) && image.type === GL_UNSIGNED_BYTE) {
        image.type = typedArrayCode(array)
      }
      var shape = data.shape
      var stride = data.stride
      var shapeX, shapeY, shapeC, strideX, strideY, strideC