1 /*
2 * Copyright © 2013 Keith Packard
3 *
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that copyright
7 * notice and this permission notice appear in supporting documentation, and
8 * that the name of the copyright holders not be used in advertising or
9 * publicity pertaining to distribution of the software without specific,
10 * written prior permission. The copyright holders make no representations
11 * about the suitability of this software for any purpose. It is provided "as
12 * is" without express or implied warranty.
13 *
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
20 * OF THIS SOFTWARE.
21 */
22
23 #include "dri3_priv.h"
24
25 #include <drm_fourcc.h>
26
27 static int dri3_request;
28 DevPrivateKeyRec dri3_screen_private_key;
29
30 static int dri3_screen_generation;
31
32 static Bool
dri3_close_screen(ScreenPtr screen)33 dri3_close_screen(ScreenPtr screen)
34 {
35 dri3_screen_priv_ptr screen_priv = dri3_screen_priv(screen);
36
37 unwrap(screen_priv, screen, CloseScreen);
38
39 free(screen_priv);
40 return (*screen->CloseScreen) (screen);
41 }
42
43 Bool
dri3_screen_init(ScreenPtr screen,const dri3_screen_info_rec * info)44 dri3_screen_init(ScreenPtr screen, const dri3_screen_info_rec *info)
45 {
46 dri3_screen_generation = serverGeneration;
47
48 if (!dixRegisterPrivateKey(&dri3_screen_private_key, PRIVATE_SCREEN, 0))
49 return FALSE;
50
51 if (!dri3_screen_priv(screen)) {
52 dri3_screen_priv_ptr screen_priv = calloc(1, sizeof (dri3_screen_priv_rec));
53 if (!screen_priv)
54 return FALSE;
55
56 wrap(screen_priv, screen, CloseScreen, dri3_close_screen);
57
58 screen_priv->info = info;
59
60 dixSetPrivate(&screen->devPrivates, &dri3_screen_private_key, screen_priv);
61 }
62
63 return TRUE;
64 }
65
66 void
dri3_extension_init(void)67 dri3_extension_init(void)
68 {
69 ExtensionEntry *extension;
70 int i;
71
72 /* If no screens support DRI3, there's no point offering the
73 * extension at all
74 */
75 if (dri3_screen_generation != serverGeneration)
76 return;
77
78 #ifdef PANORAMIX
79 if (!noPanoramiXExtension)
80 return;
81 #endif
82
83 extension = AddExtension(DRI3_NAME, DRI3NumberEvents, DRI3NumberErrors,
84 proc_dri3_dispatch, sproc_dri3_dispatch,
85 NULL, StandardMinorOpcode);
86 if (!extension)
87 goto bail;
88
89 dri3_request = extension->base;
90
91 for (i = 0; i < screenInfo.numScreens; i++) {
92 if (!dri3_screen_init(screenInfo.screens[i], NULL))
93 goto bail;
94 }
95 return;
96
97 bail:
98 FatalError("Cannot initialize DRI3 extension");
99 }
100
101 uint32_t
drm_format_for_depth(uint32_t depth,uint32_t bpp)102 drm_format_for_depth(uint32_t depth, uint32_t bpp)
103 {
104 switch (bpp) {
105 case 16:
106 return DRM_FORMAT_RGB565;
107 case 24:
108 return DRM_FORMAT_XRGB8888;
109 case 30:
110 return DRM_FORMAT_XRGB2101010;
111 case 32:
112 return DRM_FORMAT_ARGB8888;
113 default:
114 return 0;
115 }
116 }
117