native_shm.c revision 7645c49e07b638de94f03d5f71fde397066a46ee 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.11
4 *
5 * Copyright (C) 2011 Benjamin Franzke <benjaminfranzke@googlemail.com>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 */
25
26#include "util/u_memory.h"
27#include "util/u_inlines.h"
28
29#include "pipe/p_compiler.h"
30#include "pipe/p_screen.h"
31#include "pipe/p_context.h"
32#include "pipe/p_state.h"
33
34#include "sw/wayland/wayland_sw_winsys.h"
35
36#include "egllog.h"
37
38#include "native_wayland.h"
39
40#include <wayland-client.h>
41#include "wayland-egl-priv.h"
42
43#include <sys/types.h>
44#include <sys/stat.h>
45#include <fcntl.h>
46
47struct wayland_shm_display {
48   struct wayland_display base;
49
50   const struct native_event_handler *event_handler;
51   struct wl_shm *wl_shm;
52};
53
54static INLINE struct wayland_shm_display *
55wayland_shm_display(const struct native_display *ndpy)
56{
57   return (struct wayland_shm_display *) ndpy;
58}
59
60
61static void
62wayland_shm_display_destroy(struct native_display *ndpy)
63{
64   struct wayland_shm_display *shmdpy = wayland_shm_display(ndpy);
65
66   if (shmdpy->base.configs)
67      FREE(shmdpy->base.configs);
68   if (shmdpy->base.own_dpy)
69      wl_display_destroy(shmdpy->base.dpy);
70
71   ndpy_uninit(ndpy);
72
73   FREE(shmdpy);
74}
75
76static struct wl_buffer *
77wayland_create_shm_buffer(struct wayland_display *display,
78                          struct wayland_surface *surface,
79                          enum native_attachment attachment)
80{
81   struct wayland_shm_display *shmdpy = (struct wayland_shm_display *) display;
82   struct pipe_screen *screen = shmdpy->base.base.screen;
83   struct pipe_resource *resource;
84   struct winsys_handle wsh;
85   uint width, height;
86   enum wl_shm_format format;
87
88   resource = resource_surface_get_single_resource(surface->rsurf, attachment);
89   resource_surface_get_size(surface->rsurf, &width, &height);
90
91   screen->resource_get_handle(screen, resource, &wsh);
92
93   pipe_resource_reference(&resource, NULL);
94
95   switch (surface->color_format) {
96   case PIPE_FORMAT_B8G8R8A8_UNORM:
97      format = (surface->premultiplied_alpha) ?
98         WL_SHM_FORMAT_PREMULTIPLIED_ARGB32 : WL_SHM_FORMAT_ARGB32;
99      break;
100   case PIPE_FORMAT_B8G8R8X8_UNORM:
101      format = WL_SHM_FORMAT_XRGB32;
102      break;
103   default:
104      return NULL;
105      break;
106   }
107
108   return wl_shm_create_buffer(shmdpy->wl_shm, wsh.fd,
109                               width, height,
110                               wsh.stride, format);
111}
112
113static void
114shm_handle_format(void *data, struct wl_shm *shm, uint32_t format)
115{
116   struct wayland_shm_display *shmdpy = data;
117
118   switch (format) {
119   case WL_SHM_FORMAT_ARGB32:
120      shmdpy->base.formats |= HAS_ARGB32;
121      break;
122   case WL_SHM_FORMAT_PREMULTIPLIED_ARGB32:
123      shmdpy->base.formats |= HAS_PREMUL_ARGB32;
124      break;
125   case WL_SHM_FORMAT_XRGB32:
126      shmdpy->base.formats |= HAS_XRGB32;
127      break;
128   }
129}
130
131static const struct wl_shm_listener shm_listener = {
132   shm_handle_format
133};
134
135static boolean
136wayland_shm_display_init_screen(struct native_display *ndpy)
137{
138   struct wayland_shm_display *shmdpy = wayland_shm_display(ndpy);
139   struct sw_winsys *winsys = NULL;
140   uint32_t id;
141
142   id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
143   if (id == 0)
144      wl_display_iterate(shmdpy->base.dpy, WL_DISPLAY_READABLE);
145   id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
146   if (id == 0)
147      return FALSE;
148
149   shmdpy->wl_shm = wl_display_bind(shmdpy->base.dpy, id, &wl_shm_interface);
150   if (!shmdpy->wl_shm)
151      return FALSE;
152
153   wl_shm_add_listener(shmdpy->wl_shm, &shm_listener, shmdpy);
154
155   if (shmdpy->base.formats == 0)
156      wl_display_roundtrip(shmdpy->base.dpy);
157   if (shmdpy->base.formats == 0)
158      return FALSE;
159
160   winsys = wayland_create_sw_winsys(shmdpy->base.dpy);
161   if (!winsys)
162      return FALSE;
163
164   shmdpy->base.base.screen =
165      shmdpy->event_handler->new_sw_screen(&shmdpy->base.base, winsys);
166
167   if (!shmdpy->base.base.screen) {
168      _eglLog(_EGL_WARNING, "failed to create shm screen");
169      return FALSE;
170   }
171
172   return TRUE;
173}
174
175struct wayland_display *
176wayland_create_shm_display(struct wl_display *dpy,
177                           const struct native_event_handler *event_handler)
178{
179   struct wayland_shm_display *shmdpy;
180
181   shmdpy = CALLOC_STRUCT(wayland_shm_display);
182   if (!shmdpy)
183      return NULL;
184
185   shmdpy->event_handler = event_handler;
186
187   shmdpy->base.dpy = dpy;
188   if (!shmdpy->base.dpy) {
189      wayland_shm_display_destroy(&shmdpy->base.base);
190      return NULL;
191   }
192
193   shmdpy->base.base.init_screen = wayland_shm_display_init_screen;
194   shmdpy->base.base.destroy = wayland_shm_display_destroy;
195   shmdpy->base.create_buffer = wayland_create_shm_buffer;
196
197   return &shmdpy->base;
198}
199
200/* vim: set sw=3 ts=8 sts=3 expandtab: */
201