# A3DGlobalGetGraphMaterialData

A3DStatus `A3DGlobalGetGraphMaterialData`(const A3DUns32 uiIndexMaterial, A3DGraphMaterialData *pData)
  `A3DStatus` A3DGlobalGetGraphMaterialData(const `A3DUns32` uiIndexMaterial, `A3DGraphMaterialData`* pData)

  Retrieves an indexed RGB color.

  > 2.0

  HOOPS stores materials in a global state using indexes. When given an index, call `A3DGlobalGetGraphMaterialData`to fill in an `A3DGraphMaterialData`instance.

      //Retrievesthematerialdataatindex3:
      A3DGraphMaterialDatamaterial_data=A3D_MAKE_DATA(A3DGraphMaterialData);
      A3DStatusresult=A3DGlobalGetGraphMaterialData(3,&material_data);
      assert(result==A3D_SUCCESS);

  Parameters

  > uiIndexMaterial: The index of the material

  > pData: The `A3DGraphMaterialData`to fill in.

  Returns

  > `A3D_SUCCESS`or an error code in case of failure.

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