# vImageConvert_Planar8toRGB565(_:_:_:_:_:) Interleaves three 8-bit planar buffers into an RGB565 3-channel interleaved buffer. ``` func vImageConvert_Planar8toRGB565(_ srcR: UnsafePointer, _ srcG: UnsafePointer, _ srcB: UnsafePointer, _ dest: UnsafePointer, _ flags: vImage_Flags) -> vImage_Error ``` ## Parameters `srcR` The source vImage buffer that contains the red channel. `srcG` The source vImage buffer that contains the green channel. `srcB` The source vImage buffer that contains the blue channel. `dest` A pointer to the destination vImage buffer structure. You’re responsible for filling out the [`height`](/documentation/Accelerate/vImage_Buffer/height), [`width`](/documentation/Accelerate/vImage_Buffer/width), and [`rowBytes`](/documentation/Accelerate/vImage_Buffer/rowBytes) fields 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, deallocate the memory to prevent memory leaks. `flags` The options to use when performing the operation. If your code implements its own tiling or its own multithreading, pass [`kvImageDoNotTile`](/documentation/Accelerate/kvImageDoNotTile); otherwise, pass [`kvImageNoFlags`](/documentation/Accelerate/kvImageNoFlags). ## Return Value [`kvImageNoError`](/documentation/Accelerate/kvImageNoError); otherwise, one of the error codes in . ## Discussion The function uses the following calculation to perform the conversion: ```objc uint32_t red = (8bitRedChannel * (31*2) + 255) / (255*2) uint32_t green = (8bitGreenChannel * 63 + 127) / 255 uint32_t blue = (8bitBlueChannel * 31 + 127) / 255 uint16_t RGB565pixel = (red << 11) | (green << 5) | blue ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)