dri3.c revision 1b5d61b8 
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#ifdef HAVE_XORG_CONFIG_H
24#include <xorg-config.h>
25#endif
26
27#include "dri3_priv.h"
28
29#include <drm_fourcc.h>
30
31static int dri3_request;
32DevPrivateKeyRec dri3_screen_private_key;
33
34static int dri3_screen_generation;
35
36static Bool
37dri3_close_screen(ScreenPtr screen)
38{
39    dri3_screen_priv_ptr screen_priv = dri3_screen_priv(screen);
40
41    unwrap(screen_priv, screen, CloseScreen);
42
43    free(screen_priv);
44    return (*screen->CloseScreen) (screen);
45}
46
47Bool
48dri3_screen_init(ScreenPtr screen, const dri3_screen_info_rec *info)
49{
50    dri3_screen_generation = serverGeneration;
51
52    if (!dixRegisterPrivateKey(&dri3_screen_private_key, PRIVATE_SCREEN, 0))
53        return FALSE;
54
55    if (!dri3_screen_priv(screen)) {
56        dri3_screen_priv_ptr screen_priv = calloc(1, sizeof (dri3_screen_priv_rec));
57        if (!screen_priv)
58            return FALSE;
59
60        wrap(screen_priv, screen, CloseScreen, dri3_close_screen);
61
62        screen_priv->info = info;
63
64        dixSetPrivate(&screen->devPrivates, &dri3_screen_private_key, screen_priv);
65    }
66
67    return TRUE;
68}
69
70void
71dri3_extension_init(void)
72{
73    ExtensionEntry *extension;
74    int i;
75
76    /* If no screens support DRI3, there's no point offering the
77     * extension at all
78     */
79    if (dri3_screen_generation != serverGeneration)
80        return;
81
82#ifdef PANORAMIX
83    if (!noPanoramiXExtension)
84        return;
85#endif
86
87    extension = AddExtension(DRI3_NAME, DRI3NumberEvents, DRI3NumberErrors,
88                             proc_dri3_dispatch, sproc_dri3_dispatch,
89                             NULL, StandardMinorOpcode);
90    if (!extension)
91        goto bail;
92
93    dri3_request = extension->base;
94
95    for (i = 0; i < screenInfo.numScreens; i++) {
96        if (!dri3_screen_init(screenInfo.screens[i], NULL))
97            goto bail;
98    }
99    return;
100
101bail:
102    FatalError("Cannot initialize DRI3 extension");
103}
104
105uint32_t
106drm_format_for_depth(uint32_t depth, uint32_t bpp)
107{
108    switch (bpp) {
109        case 16:
110            return DRM_FORMAT_RGB565;
111        case 24:
112            return DRM_FORMAT_XRGB8888;
113        case 30:
114            return DRM_FORMAT_XRGB2101010;
115        case 32:
116            return DRM_FORMAT_ARGB8888;
117        default:
118            return 0;
119    }
120}
121