CombinationShould look

HTMLImage, UNPACK_FLIP_Y_WEBGL falseupside down

HTMLImage, UNPACK_FLIP_Y_WEBGL trueupright

ImageBitmap, UNPACK_FLIP_Y_WEBGL false, imageOrientation defaultupside down

ImageBitmap, UNPACK_FLIP_Y_WEBGL false, imageOrientation flipYupright

ImageBitmap, UNPACK_FLIP_Y_WEBGL true, imageOrientation defaultupside down

ImageBitmap, UNPACK_FLIP_Y_WEBGL true, imageOrientation flipYupright

ImageBitmap, UNPACK_FLIP_Y_WEBGL false, imageOrientation flipY and no dimensionsupright