KHRExternalSemaphore (LWJGL 3.3.0 - OpenCL)

java.lang.Object
- org.lwjgl.opencl.KHRExternalSemaphore

```
public final class KHRExternalSemaphore
extends java.lang.Object
```
Native bindings to the khr_external_semaphore extension.
cl_khr_semaphore introduced semaphores as a new type along with a set of APIs for create, release, retain, wait and signal operations on it. This extension defines APIs and mechanisms to share semaphores created in an external API by importing into and exporting from OpenCL.

This extension defines:
- New attributes that can be passed as part of cl_semaphore_properties_khr for specifying properties of external semaphores to be imported or exported.
- New attributes that can be passed as part of cl_semaphore_info_khr for specifying properties of external semaphores to be exported.
- An extension to CreateSemaphoreWithPropertiesKHR to accept external semaphore properties allowing to import or export an external semaphore into or from OpenCL.
- Semaphore handle types required for importing and exporting semaphores.
- Modifications to Wait and Signal API behavior when dealing with external semaphores created from different handle types.
- API query exportable semaphores handles using specified handle type.
Other related extensions define specific external semaphores that may be imported into or exported from OpenCL.

Requires CL12 and the khr_semaphore extension.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`CL_COMMAND_ACQUIRE_EXTERNAL_MEM_OBJECTS_KHR CL_COMMAND_RELEASE_EXTERNAL_MEM_OBJECTS_KHR`	New return values from `GetEventInfo` when `param_name` is `EVENT_COMMAND_TYPE`.
`static int`	`CL_DEVICE_EXTERNAL_MEMORY_IMPORT_HANDLE_TYPES_KHR`	Accepted value for the `param_name` parameter to `GetDeviceInfo` to query external memory handle types that may be imported by an OpenCL device.
`static int`	`CL_DEVICE_HANDLE_LIST_END_KHR CL_DEVICE_HANDLE_LIST_KHR`	New properties accepted as `properties` to `CreateBufferWithProperties` and `CreateImageWithProperties`.
`static int`	`CL_EXTERNAL_MEMORY_HANDLE_DMA_BUF_KHR`	External memory handle type added by `cl_khr_external_memory_dma_buf`.
`static int`	`CL_EXTERNAL_MEMORY_HANDLE_OPAQUE_FD_KHR`	External memory handle type added by `cl_khr_external_memory_opaque_fd`.
`static int`	`CL_EXTERNAL_MEMORY_HANDLE_OPAQUE_WIN32_KHR CL_EXTERNAL_MEMORY_HANDLE_OPAQUE_WIN32_KMT_KHR`	External memory handle types added by `cl_khr_external_memory_win32`.
`static int`	`CL_PLATFORM_EXTERNAL_MEMORY_IMPORT_HANDLE_TYPES_KHR`	Accepted value for the `param_name` parameter to `GetPlatformInfo` to query external memory handle types that may be imported by all devices in an OpenCL platform.

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

- Field Detail
  - CL_PLATFORM_EXTERNAL_MEMORY_IMPORT_HANDLE_TYPES_KHR
    
    Accepted value for the param_name parameter to GetPlatformInfo to query external memory handle types that may be imported by all devices in an OpenCL platform.
  - CL_DEVICE_EXTERNAL_MEMORY_IMPORT_HANDLE_TYPES_KHR
    
    Accepted value for the param_name parameter to GetDeviceInfo to query external memory handle types that may be imported by an OpenCL device.
  - CL_DEVICE_HANDLE_LIST_KHR, CL_DEVICE_HANDLE_LIST_END_KHR
    
    New properties accepted as properties to CreateBufferWithProperties and CreateImageWithProperties.
  - CL_COMMAND_ACQUIRE_EXTERNAL_MEM_OBJECTS_KHR, CL_COMMAND_RELEASE_EXTERNAL_MEM_OBJECTS_KHR
    
    New return values from GetEventInfo when param_name is EVENT_COMMAND_TYPE.
  - CL_EXTERNAL_MEMORY_HANDLE_DMA_BUF_KHR
    
    External memory handle type added by cl_khr_external_memory_dma_buf.
  - CL_EXTERNAL_MEMORY_HANDLE_OPAQUE_FD_KHR
    
    External memory handle type added by cl_khr_external_memory_opaque_fd.
  - CL_EXTERNAL_MEMORY_HANDLE_OPAQUE_WIN32_KHR, CL_EXTERNAL_MEMORY_HANDLE_OPAQUE_WIN32_KMT_KHR
    
    External memory handle types added by cl_khr_external_memory_win32.