1 /**************************************************************************
2 *
3 * Copyright 2012 Francisco Jerez
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #include "pipe_loader_priv.h"
29
30 #include "util/u_memory.h"
31 #include "util/u_dl.h"
32 #include "sw/null/null_sw_winsys.h"
33 #include "target-helpers/inline_sw_helper.h"
34 #include "state_tracker/xlib_sw_winsys.h"
35
36 struct pipe_loader_sw_device {
37 struct pipe_loader_device base;
38 struct util_dl_library *lib;
39 struct sw_winsys *ws;
40 };
41
42 #define pipe_loader_sw_device(dev) ((struct pipe_loader_sw_device *)dev)
43
44 static struct pipe_loader_ops pipe_loader_sw_ops;
45
46 static struct sw_winsys *(*backends[])() = {
47 #ifdef HAVE_WINSYS_XLIB
48 x11_sw_create,
49 #endif
50 null_sw_create
51 };
52
53 int
pipe_loader_sw_probe(struct pipe_loader_device ** devs,int ndev)54 pipe_loader_sw_probe(struct pipe_loader_device **devs, int ndev)
55 {
56 int i;
57
58 for (i = 0; i < Elements(backends); i++) {
59 if (i < ndev) {
60 struct pipe_loader_sw_device *sdev = CALLOC_STRUCT(pipe_loader_sw_device);
61
62 sdev->base.type = PIPE_LOADER_DEVICE_SOFTWARE;
63 sdev->base.driver_name = "swrast";
64 sdev->base.ops = &pipe_loader_sw_ops;
65 sdev->ws = backends[i]();
66 devs[i] = &sdev->base;
67 }
68 }
69
70 return i;
71 }
72
73 static void
pipe_loader_sw_release(struct pipe_loader_device ** dev)74 pipe_loader_sw_release(struct pipe_loader_device **dev)
75 {
76 struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(*dev);
77
78 if (sdev->lib)
79 util_dl_close(sdev->lib);
80
81 FREE(sdev);
82 *dev = NULL;
83 }
84
85 static struct pipe_screen *
pipe_loader_sw_create_screen(struct pipe_loader_device * dev,const char * library_paths)86 pipe_loader_sw_create_screen(struct pipe_loader_device *dev,
87 const char *library_paths)
88 {
89 struct pipe_loader_sw_device *sdev = pipe_loader_sw_device(dev);
90 struct pipe_screen *(*init)(struct sw_winsys *);
91
92 if (!sdev->lib)
93 sdev->lib = pipe_loader_find_module(dev, library_paths);
94 if (!sdev->lib)
95 return NULL;
96
97 init = (void *)util_dl_get_proc_address(sdev->lib, "swrast_create_screen");
98 if (!init)
99 return NULL;
100
101 return init(sdev->ws);
102 }
103
104 static struct pipe_loader_ops pipe_loader_sw_ops = {
105 .create_screen = pipe_loader_sw_create_screen,
106 .release = pipe_loader_sw_release
107 };
108