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# CVMetalBufferCache

A cache used to create and manage Metal buffer objects.

```
class CVMetalBufferCache
```

## Overview

A Core Video Metal buffer cache creates and manages [`CVMetalBuffer`](/documentation/CoreVideo/CVMetalBuffer) buffers. You use a Metal buffer cache to directly read from or write to GPU-based Core Video image buffers in rendering, or for sharing data with Metal kernels.

## Topics

### Functions

[`CVMetalBufferCacheCreate(_:_:_:_:)`](/documentation/CoreVideo/CVMetalBufferCacheCreate(_:_:_:_:))

[`CVMetalBufferCacheCreateBufferFromImage(_:_:_:_:)`](/documentation/CoreVideo/CVMetalBufferCacheCreateBufferFromImage(_:_:_:_:))

[`CVMetalBufferCacheFlush(_:_:)`](/documentation/CoreVideo/CVMetalBufferCacheFlush(_:_:))

[`CVMetalBufferCacheGetTypeID()`](/documentation/CoreVideo/CVMetalBufferCacheGetTypeID())

[`CVMetalBufferGetBuffer(_:)`](/documentation/CoreVideo/CVMetalBufferGetBuffer(_:))

[`CVMetalBufferGetTypeID()`](/documentation/CoreVideo/CVMetalBufferGetTypeID())

### Data Types

[`CVMetalBuffer`](/documentation/CoreVideo/CVMetalBuffer)

### Constants

[`kCVMetalBufferCacheMaximumBufferAgeKey`](/documentation/CoreVideo/kCVMetalBufferCacheMaximumBufferAgeKey)


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