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8.. _amdgpu_synid_gfx90a_vdata_5:
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10vdata
11=====
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13Input data for an atomic instruction.
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15Optionally may serve as an output data:
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17* If :ref:`glc<amdgpu_synid_glc>` is specified, gets the memory value before the operation.
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19*Size:* depends on :ref:`dmask<amdgpu_synid_dmask>` and :ref:`tfe<amdgpu_synid_tfe>`:
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21* :ref:`dmask<amdgpu_synid_dmask>` may specify 2 data elements for 32-bit-per-pixel surfaces or 4 data elements for 64-bit-per-pixel surfaces. Each data element occupies 1 dword.
22* :ref:`tfe<amdgpu_synid_tfe>` adds 1 dword if specified.
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24  Note: the surface data format is indicated in the image resource constant but not in the instruction.
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26*Operands:* :ref:`v<amdgpu_synid_v>`, :ref:`a<amdgpu_synid_a>`
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