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4358 Serge 1
/**************************************************************************
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 *
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 * Copyright 2012 Francisco Jerez
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 * All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sub license, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 **************************************************************************/
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#include "pipe_loader_priv.h"
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#include "util/u_memory.h"
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#include "util/u_dl.h"
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#include "sw/null/null_sw_winsys.h"
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#include "target-helpers/inline_sw_helper.h"
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//#include "state_tracker/xlib_sw_winsys.h"
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struct pipe_loader_sw_device {
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   struct pipe_loader_device base;
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   struct util_dl_library *lib;
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   struct sw_winsys *ws;
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};
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#define pipe_loader_sw_device(dev) ((struct pipe_loader_sw_device *)dev)
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static struct pipe_loader_ops pipe_loader_sw_ops;
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static struct sw_winsys *(*backends[])() = {
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#ifdef HAVE_WINSYS_XLIB
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   x11_sw_create,
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#endif
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   null_sw_create
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};
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int
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pipe_loader_sw_probe(struct pipe_loader_device **devs, int ndev)
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{
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   int i;
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   for (i = 0; i < Elements(backends); i++) {
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      if (i < ndev) {
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         struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
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         sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
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         sdev->base.driver_name = "swrast";
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         sdev->base.ops = &pipe_loader_sw_ops;
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         sdev->ws = backends[i]();
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         devs[i] = &sdev->base;
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      }
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   }
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   return i;
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}
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static void
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pipe_loader_sw_release(struct pipe_loader_device **dev)
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{
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   struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(*dev);
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   if (sdev->lib)
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      util_dl_close(sdev->lib);
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   FREE(sdev);
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   *dev = NULL;
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}
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static struct pipe_screen *
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pipe_loader_sw_create_screen(struct pipe_loader_device *dev,
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                             const char *library_paths)
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{
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   struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(dev);
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   struct pipe_screen *(*init)(struct sw_winsys *);
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   if (!sdev->lib)
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      sdev->lib = pipe_loader_find_module(dev, library_paths);
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   if (!sdev->lib)
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      return NULL;
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   init = (void *)util_dl_get_proc_address(sdev->lib, "swrast_create_screen");
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   if (!init)
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      return NULL;
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   return init(sdev->ws);
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}
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static struct pipe_loader_ops pipe_loader_sw_ops = {
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   .create_screen = pipe_loader_sw_create_screen,
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   .release = pipe_loader_sw_release
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};