src/gallium/include/state_tracker/swrast_screen_create.h

   1 #include "pipe/p_compiler.h"
   2 #include "util/u_debug.h"
   3 #include "target-helpers/wrap_screen.h"
   4
   5 struct sw_winsys;
   6
   7 #ifdef GALLIUM_SOFTPIPE
   8 #include "softpipe/sp_public.h"
   9 #endif
  10
  11 #ifdef GALLIUM_LLVMPIPE
  12 #include "llvmpipe/lp_public.h"
  13 #endif
  14
  15 #ifdef GALLIUM_CELL
  16 #include "cell/ppu/cell_public.h"
  17 #endif
  18
  19 /*
  20  * Helper function to choose and instantiate one of the software rasterizers:
  21  * cell, llvmpipe, softpipe.
  22  *
  23  * This function could be shared, but currently causes headaches for
  24  * the build systems, particularly scons if we try.  Long term, want
  25  * to avoid having global #defines for things like GALLIUM_LLVMPIPE,
  26  * GALLIUM_CELL, etc.  Scons already eliminates those #defines, so
  27  * things that are painful for it now are likely to be painful for
  28  * other build systems in the future.
  29  */
  30
  31 static INLINE struct pipe_screen *
  32 swrast_screen_create(struct sw_winsys *winsys)
  33 {
  34    const char *default_driver;
  35    const char *driver;
  36    struct pipe_screen *screen = NULL;
  37
  38 #if defined(GALLIUM_CELL)
  39    default_driver = "cell";
  40 #elif defined(GALLIUM_LLVMPIPE)
  41    default_driver = "llvmpipe";
  42 #elif defined(GALLIUM_SOFTPIPE)
  43    default_driver = "softpipe";
  44 #else
  45    default_driver = "";
  46 #endif
  47
  48    driver = debug_get_option("GALLIUM_DRIVER", default_driver);
  49
  50 #if defined(GALLIUM_CELL)
  51    if (screen == NULL && strcmp(driver, "cell") == 0)
  52       screen = cell_create_screen( winsys );
  53 #endif
  54
  55 #if defined(GALLIUM_LLVMPIPE)
  56    if (screen == NULL && strcmp(driver, "llvmpipe") == 0)
  57       screen = llvmpipe_create_screen( winsys );
  58 #endif
  59
  60 #if defined(GALLIUM_SOFTPIPE)
  61    if (screen == NULL)
  62       screen = softpipe_create_screen( winsys );
  63 #endif
  64
  65    return gallium_wrap_screen( screen );
  66 }
  67