---
title: NSOpenGLCPStateValidation
framework: appkit
role: symbol
role_heading: Global Variable
path: appkit/nsopenglcpstatevalidation
---

# NSOpenGLCPStateValidation

If enabled, OpenGL inspects the context state each time the update() method is called to ensure that it is in an appropriate state for switching between renderers.

## Declaration

```occ
static const NSOpenGLContextParameter NSOpenGLCPStateValidation;
```

## Discussion

Discussion Normally, the state is inspected only when it is actually necessary to switch renderers. This is useful when using a single monitor system to test that an application performs correctly on a multiple-monitor system.

## See Also

### Deprecated

- [NSOpenGLCPSwapInterval](appkit/nsopenglcpswapinterval.md)
- [NSOpenGLCPSurfaceOrder](appkit/nsopenglcpsurfaceorder.md)
- [NSOpenGLCPSurfaceOpacity](appkit/nsopenglcpsurfaceopacity.md)
- [NSOpenGLCPSurfaceBackingSize](appkit/nsopenglcpsurfacebackingsize.md)
- [NSOpenGLCPReclaimResources](appkit/nsopenglcpreclaimresources.md)
- [NSOpenGLCPCurrentRendererID](appkit/nsopenglcpcurrentrendererid.md)
- [NSOpenGLCPGPUVertexProcessing](appkit/nsopenglcpgpuvertexprocessing.md)
- [NSOpenGLCPGPUFragmentProcessing](appkit/nsopenglcpgpufragmentprocessing.md)
- [NSOpenGLCPHasDrawable](appkit/nsopenglcphasdrawable.md)
- [NSOpenGLCPMPSwapsInFlight](appkit/nsopenglcpmpswapsinflight.md)
- [NSOpenGLCPSwapRectangle](appkit/nsopenglcpswaprectangle.md)
- [NSOpenGLCPSwapRectangleEnable](appkit/nsopenglcpswaprectangleenable.md)
- [NSOpenGLCPRasterizationEnable](appkit/nsopenglcprasterizationenable.md)
- [NSOpenGLCPSurfaceSurfaceVolatile](appkit/nsopenglcpsurfacesurfacevolatile.md)