#ifndef SW_HELPER_H
#define SW_HELPER_H

#include "pipe/p_compiler.h"
#include "util/u_debug.h"
#include "target-helpers/sw_helper_public.h"
#include "state_tracker/sw_winsys.h"


/* Helper function to choose and instantiate one of the software rasterizers:
 * llvmpipe, softpipe, swr.
 */

#ifdef GALLIUM_SOFTPIPE
#include "softpipe/sp_public.h"
#endif

#ifdef GALLIUM_LLVMPIPE
#include "llvmpipe/lp_public.h"
#endif

#ifdef GALLIUM_SWR
#include "swr/swr_public.h"
#endif

#ifdef GALLIUM_VIRGL
#include "virgl/virgl_public.h"
#include "virgl/vtest/virgl_vtest_public.h"
#endif

static inline struct pipe_screen *
sw_screen_create_named(struct sw_winsys *winsys, const char *driver)
{
   struct pipe_screen *screen = NULL;

#if defined(GALLIUM_LLVMPIPE)
   if (screen == NULL && strcmp(driver, "llvmpipe") == 0)
      screen = llvmpipe_create_screen(winsys);
#endif

#if defined(GALLIUM_VIRGL)
   if (screen == NULL && strcmp(driver, "virpipe") == 0) {
      struct virgl_winsys *vws;
      vws = virgl_vtest_winsys_wrap(winsys);
      screen = virgl_create_screen(vws, NULL);
   }
#endif

#if defined(GALLIUM_SOFTPIPE)
   if (screen == NULL && strcmp(driver, "softpipe") == 0)
      screen = softpipe_create_screen(winsys);
#endif

#if defined(GALLIUM_SWR)
   if (screen == NULL && strcmp(driver, "swr") == 0)
      screen = swr_create_screen(winsys);
#endif

   return screen;
}


struct pipe_screen *
sw_screen_create(struct sw_winsys *winsys)
{
   const char *default_driver;
   const char *driver;

#if defined(GALLIUM_LLVMPIPE)
   default_driver = "llvmpipe";
#elif defined(GALLIUM_SOFTPIPE)
   default_driver = "softpipe";
#elif defined(GALLIUM_SWR)
   default_driver = "swr";
#else
   default_driver = "";
#endif

   driver = debug_get_option("GALLIUM_DRIVER", default_driver);
   return sw_screen_create_named(winsys, driver);
}

#endif