NAME

       clEnqueueFillBuffer - Enqueues a command to fill a buffer object with a pattern of a given pattern size.

       cl_int clEnqueueFillBuffer(cl_command_queue command_queue, cl_mem buffer, const void *pattern,
                                  size_t pattern_size, size_t offset, size_t size,
                                  cl_uint num_events_in_wait_list, const cl_event *event_wait_list,
                                  cl_event *event);

PARAMETERS

        command_queue
           Refers to the command-queue in which the fill command will be queued. The OpenCL context associated
           with command_queue and buffer must be the same.

        buffer
           A valid buffer object.

        pattern
           A pointer to the data pattern of size pattern_size in bytes.  pattern will be used to fill a region
           in buffer starting at offset and is size bytes in size. The data pattern must be a scalar or vector
           integer or floating-point data type. For example, if buffer is to be filled with a pattern of float4
           values, then pattern will be a pointer to a cl_float4 value and pattern_size will be
           sizeof(cl_float4). The maximum value of pattern_size is the size of the largest integer or
           floating-point vector data type supported by the OpenCL device. The memory associated with pattern
           can be reused or freed after the function returns.

        offset
           The location in bytes of the region being filled in buffer and must be a multiple of pattern_size.

        size
           The size in bytes of region being filled in buffer and must be a multiple of pattern_size.

        event_wait_list ,  num_events_in_wait_list
           Specify events that need to complete before this particular 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. The context associated
           with events in event_wait_list and command_queue must be the same. The memory associated with
           event_wait_list can be reused or freed after the function returns.

        event
           Returns an event object that identifies this particular write command and can be used to query or
           queue a wait for this particular 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.  clEnqueueBarrierWithWaitList(3clc) can be used instead. If the event_wait_list and the
           event arguments are not NULL, the event argument should not refer to an element of the
           event_wait_list array.

NOTES

       Enqueues a command to fill a buffer object with a pattern of a given pattern size. The usage information
       which indicates whether the memory object can be read or written by a kernel and/or the host and is given
       by the cl_mem_flags argument value specified when buffer is created is ignored by clEnqueueFillBuffer.

ERRORS

       clEnqueueFillBuffer returns CL_SUCCESS if the function is executed successfully. Otherwise, it returns
       one of the following errors.

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

       •   CL_INVALID_CONTEXT if the context associated with command_queue and buffer are not the same or if the
           context associated with command_queue and events in event_wait_list are not the same.

       •   CL_INVALID_MEM_OBJECT if buffer is not a valid buffer object.

       •   CL_INVALID_VALUE if offset or offset + size require accessing elements outside the buffer buffer
           object respectively.

       •   CL_INVALID_VALUE if pattern is NULL or if pattern_size is 0 or if pattern_size is not one of {1, 2,
           4, 8, 16, 32, 64, 128}.

       •   CL_INVALID_VALUE if offset and size are not a multiple of pattern_size.

       •   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_MISALIGNED_SUB_BUFFER_OFFSET if buffer is a sub-buffer object and offset specified when the
           sub-buffer object is created is not aligned to CL_DEVICE_MEM_BASE_ADDR_ALIGN value for device
           associated with queue.

       •   CL_MEM_OBJECT_ALLOCATION_FAILURE if there is a failure to allocate memory for data store associated
           with buffer.

       •   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.

SPECIFICATION

       OpenCL Specification[1]

SEE ALSO

       clEnqueueBarrierWithWaitList(3clc)

AUTHORS

       The Khronos Group

COPYRIGHT

       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.

NOTES

        1. OpenCL Specification
           page 84, section 5.2.2 - Reading, Writing and Copying Buffer Objects