Converts an RGBA5551 image to an RGB565 image, with loss of alpha.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
A pointer to a vImage buffer structure that contains the source image whose data you want to convert.
A pointer to a vImage buffer data structure. You're responsible for filling out the
rowfields of this structure, and for allocating a data buffer of the appropriate size. On return, the data buffer this structure points to contains the destination image data. When you no longer need the data buffer, you must deallocate the memory.
The options to use when performing the operation. If you plan to perform your own tiling or use multithreading, pass
Image Do Not Tile
If you need to process the alpha information first—for example, unpremultiplying or flattening—convert to 8-bit per channel first. vImage defines both RGB565 and ARGB1555 to be host-endian formats. On Intel, ARM, and other little-endian systems, they're little-endian
uint16 in memory. On a big-endian system, they're big-endian