clEnqueueReleaseGLObjects - Release OpenCL memory objects that have been created from OpenGL objects.

TheKhronosGroup

       Copyright © 2007-2011 The Khronos Group Inc.
       Permission is hereby granted, free of charge, to any person obtaining a copy of this software and/or
       associated documentation files (the "Materials"), to deal in the Materials without restriction, including
       without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
       copies of the Materials, and to permit persons to whom the Materials are furnished to do so, subject to
       the condition that this copyright notice and permission notice shall be included in all copies or
       substantial portions of the Materials.

       Release OpenCL memory objects that have been created from OpenGL objects. These objects need to be
       released before they can be used by OpenGL. The OpenGL objects are released by the OpenCL context
       associated with command_queue.

clEnqueueReleaseGLObjects returns CL_SUCCESS if the function is executed successfully. If num_objects is
       0 and mem_objects is NULL the function does nothing and returns CL_SUCCESS. Otherwise, it returns one of
       the following errors:

       •   CL_INVALID_VALUE if num_objects is zero and mem_objects is not a NULL value or if num_objects > 0 and
           mem_objects is NULL.

       •   CL_INVALID_MEM_OBJECT if memory objects in mem_objects are not valid OpenCL memory objects.

       •   CL_INVALID_COMMAND_QUEUE if command_queue is not a valid command-queue.

       •   CL_INVALID_CONTEXT if context associated with command_queue was not created from an OpenGL context.

       •   CL_INVALID_GL_OBJECT if memory objects in mem_objects have not been created from a GL object(s).

       •   CL_INVALID_EVENT_WAIT_LIST if event_wait_list is NULL and num_events_in_wait_list > 0, or
           event_wait_list is not NULL and num_events_in_wait_list is 0, or if event objects in event_wait_list
           are not valid events.

       •   CL_OUT_OF_RESOURCES if there is a failure to allocate resources required by the OpenCL implementation
           on the device.

       •   CL_OUT_OF_HOST_MEMORY if there is a failure to allocate resources required by the OpenCL
           implementation on the host.

       clEnqueueReleaseGLObjects - Release OpenCL memory objects that have been created from OpenGL objects.

       cl_intclEnqueueReleaseGLObjects(cl_command_queuecommand_queue,cl_uintnum_objects,constcl_mem*mem_objects,cl_uintnum_events_in_wait_list,constcl_event*event_wait_list,cl_event*event);

        1. OpenCL Specification
           page 58, section 9.7.6 - Sharing memory objects that map to GL objects...

The Khronos Group                                  11/18/2024                         CLENQUEUERELEASEGLOB(3clc)

command_queue
           A valid command-queue.

        num_objects
           The number of memory objects to be released in mem_objects.

        mem_objects
           A pointer to a list of CL memory objects that correspond to GL objects.

         event_wait_list ,   num_events_in_wait_list
           These parameters specify events that need to complete before this command can be executed. If
           event_wait_list is NULL, then this particular command does not wait on any event to complete. If
           event_wait_list is NULL, num_events_in_wait_list must be 0. If event_wait_list is not NULL, the list
           of events pointed to by event_wait_list must be valid and num_events_in_wait_list must be greater
           than 0. The events specified in event_wait_list act as synchronization points.

        event
           Returns an event object that identifies this particular read/write command and can be used to query
           or queue a wait for the command to complete.  event can be NULL in which case it will not be possible
           for the application to query the status of this command or queue a wait for this command to complete.

           If the cl_khr_gl_sharing(3clc) extension is supported and if an OpenGL context is bound to the
           current thread, then any OpenGL commands which does:

           •    affect or access the contents of a memory object listed in the mem_objects list, and

           •    are issued on that context after the call to clEnqueueReleaseGLObjects.RE

               will not execute until after execution of any OpenCL commands preceding the
               clEnqueueReleaseGLObjects which affect or access any of those memory objects. If a non-NULL event
               object is returned, it will report completion before execution of such OpenGL commands.

cl_khr_gl_sharing(3clc), clEnqueueAcquireGLObjects(3clc), cl_khr_gl_event(3clc)

OpenCLSpecification[1]