icetCompositeMode -- set the type of operation used for compositing

icetCompositeMode will let you set a mode even if it is incompatible with other  current  settings.  Some
       settings will be checked during a call to icetDrawFrame or icetCompositeImage.  For example, if the image
       format  (specified  with  icetSetColorFormatand  icetSetDepthFormat)does  not  support the composite mode
       picked, you will get an error during the call to icetDrawFrame.

       Other  incompatibilities  are  also  not  checked.  For  example,  if  the  composite  mode  is  set   to
       ICET_COMPOSITE_MODE_BLEND,  IceT  will  happily  use  this operator even if ICET_ORDERED_COMPOSITE is not
       enabled. However, because order matters in the blend mode, you will probably get incorrect images if  the
       compositing happens in arbitrary order.

       Copyright (C)2010 Sandia Corporation

       Under  the  terms  of  Contract  DE-AC04-94AL85000  with  Sandia Corporation, the U.S. Government retains
       certain rights in this software.

       This source code is released under the New BSD License.

       Sets  the  composite  mode  used  when combining images. IceT enables parallel rendering by allowing each
       process in your code to independently render images of partial geometry.  These  partial-geometry  images
       are  then  ``composited''  to  form  a  single image equivalent to if all the geometry were rendered by a
       single process.

       IceT supports multiple operations that can be used to combine images.  The operator  you  use  should  be
       equivalent  to  that  used  by  your  rendering system to resolve .ighidden surfacehidden surfaces or mix
       occluding geometry with that behind it.

       The argument mode is one of the following enumerations:

       ICET_COMPOSITE_MODE_Z_BUFFER
               Use the hidden-surface removal operation. The compositing  operation  compares  the  distance  of
              pixel  fragments from the viewpoint and passes the fragment closest to the user. In order for this
              operation to work, images must have a depth buffer (set with icetSetDepthFormat).

       ICET_COMPOSITE_MODE_BLEND
               Blend two fragments together using the standard operator. in order for this  operation  to  work,
              images  must  have a color buffer (set with icetSetColorFormat)that has an alpha channel and there
              must be no depth buffer (as the operation makes no sense with depth).  Also, this mode  will  only
              work if ICET_ORDERED_COMPOSITE is enabled and the order is set with icetCompositeOrder.

       The  default  compositing  mode is ICET_COMPOSITE_MODE_Z_BUFFER.  The current composite mode is stored in
       the ICET_COMPOSITE_MODE state variable.

ICET_INVALID_ENUMmode is not a valid composite mode.

icetCompositeMode--setthetypeofoperationusedforcompositing

icetCompositeOrder(3), icetSetColorFormat(3), icetSetDepthFormat(3)

IceT Reference                                 September 26, 2014                           icetCompositeMode(3)

       #include <IceT.h>

       void icetCompositeMode(   IceTEnum   mode  );

       None.