src/gallium/state_trackers/python/st_softpipe_winsys.c

   1 /**************************************************************************
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   3  * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
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  27  **************************************************************************/
  28
  29 #include "util/u_debug.h"
  30 #include "softpipe/sp_public.h"
  31 #include "llvmpipe/lp_public.h"
  32 #include "state_tracker/sw_winsys.h"
  33 #include "null/null_sw_winsys.h"
  34 #include "st_winsys.h"
  35
  36
  37 struct pipe_screen *
  38 st_software_screen_create(void)
  39 {
  40    struct sw_winsys *ws;
  41    const char *default_driver;
  42    const char *driver;
  43    struct pipe_screen *screen = NULL;
  44
  45 #if defined(HAVE_LLVMPIPE)
  46    default_driver = "llvmpipe";
  47 #elif defined(HAVE_SOFTPIPE)
  48    default_driver = "softpipe";
  49 #else
  50    default_driver = "";
  51 #endif
  52
  53    ws = null_sw_create();
  54    if(!ws)
  55       return NULL;
  56
  57    driver = debug_get_option("GALLIUM_DRIVER", default_driver);
  58
  59 #ifdef HAVE_LLVMPIPE
  60    if (strcmp(driver, "llvmpipe") == 0) {
  61       screen = llvmpipe_create_screen(ws);
  62    }
  63 #endif
  64
  65 #ifdef HAVE_SOFTPIPE
  66    if (strcmp(driver, "softpipe") == 0) {
  67       screen = softpipe_create_screen(ws);
  68    }
  69 #endif
  70
  71    return screen;
  72 }