# CVOpenGLBufferPool A utility object for managing a set of recyclable OpenGL buffer objects. ## Topics ### Functions [`func CVOpenGLBufferPoolCreate(CFAllocator?, CFDictionary?, CFDictionary?, UnsafeMutablePointer) -> CVReturn`](/documentation/CoreVideo/CVOpenGLBufferPoolCreate(_:_:_:_:)) Creates a new OpenGL buffer pool. [`func CVOpenGLBufferPoolCreateOpenGLBuffer(CFAllocator?, CVOpenGLBufferPool, UnsafeMutablePointer) -> CVReturn`](/documentation/CoreVideo/CVOpenGLBufferPoolCreateOpenGLBuffer(_:_:_:)) Creates a new OpenGL buffer from an OpenGL buffer pool. [`func CVOpenGLBufferPoolGetAttributes(CVOpenGLBufferPool) -> Unmanaged?`](/documentation/CoreVideo/CVOpenGLBufferPoolGetAttributes(_:)) Returns the pool attributes dictionary for an Open GL buffer pool. [`func CVOpenGLBufferPoolGetOpenGLBufferAttributes(CVOpenGLBufferPool) -> Unmanaged?`](/documentation/CoreVideo/CVOpenGLBufferPoolGetOpenGLBufferAttributes(_:)) Returns the attributes of OpenGL buffers that will be created from a buffer pool. [`func CVOpenGLBufferPoolGetTypeID() -> CFTypeID`](/documentation/CoreVideo/CVOpenGLBufferPoolGetTypeID()) Obtains the Core Foundation ID for the OpenGL buffer pool type. [`extern CVOpenGLBufferPoolRefCVOpenGLBufferPoolRetain(CVOpenGLBufferPoolRef openGLBufferPool);`](/documentation/CoreVideo/CVOpenGLBufferPoolRetain) Retains an OpenGL buffer pool. [`extern void CVOpenGLBufferPoolRelease(CVOpenGLBufferPoolRef openGLBufferPool);`](/documentation/CoreVideo/CVOpenGLBufferPoolRelease) Releases an OpenGL buffer pool. ### Data Types [`class CVOpenGLBufferPool`](/documentation/CoreVideo/CVOpenGLBufferPool) A reference to an OpenGL buffer pool object. ### Constants [`let kCVOpenGLBufferPoolMaximumBufferAgeKey: CFString`](/documentation/CoreVideo/kCVOpenGLBufferPoolMaximumBufferAgeKey) The maximum time that unused buffers should be kept before they are deallocated (type `CFAbsoluteTime`). [`let kCVOpenGLBufferPoolMinimumBufferCountKey: CFString`](/documentation/CoreVideo/kCVOpenGLBufferPoolMinimumBufferCountKey) The minimum number of buffers to be kept in the pool (type `CFNumber`). ## See Also [Core Video Programming Guide](https://developer.apple.com/library/archive/documentation/GraphicsImaging/Conceptual/CoreVideo/CVProg_Intro/CVProg_Intro.html#//apple_ref/doc/uid/TP40001536) --- 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)