# wantsBestResolutionOpenGLSurface A Boolean value indicating whether the view wants an OpenGL backing surface with a resolution greater than 1 pixel per point. ``` var wantsBestResolutionOpenGLSurface: Bool { get set } ``` ## Return Value if the view wants a high resolution backing surface or if it does not. ## Discussion This property is relevant only for views bound to an [`NSOpenGLContext`](/documentation/AppKit/NSOpenGLContext) object (including, but not limited to, [`NSOpenGLView`](/documentation/AppKit/NSOpenGLView) objects). Layer-backed views ignore the value in this property and configure their own backing surface at an appropriate resolution. > Important: > For applications linked on macOS 10.15 or later, the default value of this property is . For applications linked on macOS 10.14 or earlier, the default value of this property is to keep binary compatibility. When this property is , the view uses a 1 pixel per point framebuffer regardless of the backing scale factor for the targeted display. When the backing scale factor is greater than `1.0`, the rendered surface contents are also magnified to the appropriate user size. When this property is , AppKit has permission to allocate a higher resolution frame buffer for the view. AppKit uses the backing scale factor and the targeted display to determine whether a higher resolution buffer is appropriate, and it may change the surface resolution when the display mode changes or the view moves to a different display. The view must be able to convert between view units and pixel units when needed. For example, passing the view’s bounds unmodified to the `glViewport` function yields incorrect results at backing scale factors other than `1.0`. You can use the [`convertToBacking(_:)`](/documentation/AppKit/NSView/convertToBacking(_:)-2xx45), [`convertToBacking(_:)`](/documentation/AppKit/NSView/convertToBacking(_:)-3zors), and [`convertToBacking(_:)`](/documentation/AppKit/NSView/convertToBacking(_:)-4ra9y) methods to convert coordinate values to the resolution of the backing store. To learn more about using OpenGL in your Mac app, see [OpenGL Programming Guide for Mac](https://developer.apple.com/library/archive/documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/opengl_intro/opengl_intro.html#//apple_ref/doc/uid/TP40001987). --- 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)