SoGLDevice

java.lang.Object
- com.openinventor.inventor.Inventor
- - com.openinventor.inventor.devices.SoDevice
  - - com.openinventor.inventor.devices.SoGLDevice

```
public class SoGLDevice
extends SoDevice
```
OpenGL device management class. This class provides functions to discover, and query information about, GPU devices available in the system through the OpenGL API. You can query, for example, the total memory available on the device.
Please see SoDevice for general information about the device classes.
See SoGLScreenDevice for information about displays attached to a GPU.

See Also:

SoCpuDevice, SoGLBufferObject, SoGLContext, SoGLScreenDevice

Nested Class Summary
- Nested classes/interfaces inherited from class com.openinventor.inventor.Inventor
  Inventor.ConstructorCommand

Field Summary
- Fields inherited from class com.openinventor.inventor.Inventor
  VERBOSE_LEVEL, ZeroHandle

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static SoGLDevice`	`findFirstAvailableDevice()`	Returns the first available device found in the system.
`static SoGLDevice`	`getDevice(int index)`	Returns the `SoGLDevice` indicated by index (starting from 0).
`static int`	`getDevicesCount()`	Returns the number of GPUs on the sytem.
`SoGLDeviceSettings`	`getDeviceSettings()`	Returns an handle of the driver API allowing to modify profile of this device.
`SoGLScreenDevice`	`getMainScreenDevice()`	Returns the main screen device connected to the GL device.
`SoGLScreenDevice`	`getScreenDevice(int index)`	Returns the `SoGLScreenDevice` indicated by index (starting from 0).
`int`	`getScreenDevicesCount()`	Returns the number of screen devices connected to the GL device.

Methods inherited from class com.openinventor.inventor.devices.SoDevice
getDeviceName, getDriverVersion, getLogicalUnits

Methods inherited from class com.openinventor.inventor.Inventor
dispose, getNativeResourceHandle

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getScreenDevicesCount
```
public int getScreenDevicesCount()
```
    Returns the number of screen devices connected to the GL device.
  - getDevicesCount
```
public static int getDevicesCount()
```
    Returns the number of GPUs on the sytem.
  - getMainScreenDevice
```
public SoGLScreenDevice getMainScreenDevice()
```
    Returns the main screen device connected to the GL device.
  - getDeviceSettings
```
public SoGLDeviceSettings getDeviceSettings()
```
    Returns an handle of the driver API allowing to modify profile of this device. The return is depending of the driver manufacturer (NVidia, AMD, Intel...). Returns NULL if the API is not available. E.g.: For Intel driver, NULL is always returned.
  - getDevice
```
public static SoGLDevice getDevice(int index)
```
    Returns the SoGLDevice indicated by index (starting from 0).
    
    Parameters:
    
    index - The index of the SoGLDevice.
  - findFirstAvailableDevice
```
public static SoGLDevice findFirstAvailableDevice()
```
    Returns the first available device found in the system. Since Open Inventor version 9.7.2, this is guaranteed to be the device that Open Inventor will actually use for rendering.
  - getScreenDevice
```
public SoGLScreenDevice getScreenDevice(int index)
```
    Returns the SoGLScreenDevice indicated by index (starting from 0).
    
    Parameters:
    
    index - The index of the SoGLScreenDevice.