src/gallium/auxiliary/target-helpers/wrap_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
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   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
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  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
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  27  **************************************************************************/
  28
  29 /*
  30  * Authors:
  31  *   Keith Whitwell
  32  */
  33
  34 #include "target-helpers/wrap_screen.h"
  35 #include "trace/tr_public.h"
  36 #include "identity/id_public.h"
  37 #include "util/u_debug.h"
  38
  39
  40 /* Centralized code to inject common wrapping layers:
  41  */
  42 struct pipe_screen *
  43 gallium_wrap_screen( struct pipe_screen *screen )
  44 {
  45    /* Screen wrapping functions are required not to fail.  If it is
  46     * impossible to wrap a screen, the unwrapped screen should be
  47     * returned instead.  Any failure condition should be returned in
  48     * an OUT argument.
  49     *
  50     * Otherwise it is really messy trying to clean up in this code.
  51     */
  52    if (debug_get_bool_option("GALLIUM_WRAP", FALSE)) {
  53       screen = identity_screen_create(screen);
  54    }
  55
  56    if (debug_get_bool_option("GALLIUM_TRACE", FALSE)) {
  57       screen = trace_screen_create( screen );
  58    }
  59
  60    return screen;
  61 }
  62
  63
  64
  65