native_shm.c revision 23aa978a9d76a48f4b93e9a8911ec50c0e5d94ab 
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
76
77static struct wl_buffer *
78wayland_create_shm_buffer(struct wayland_display *display,
79                          struct wayland_surface *surface,
80                          enum native_attachment attachment)
81{
82   struct wayland_shm_display *shmdpy = (struct wayland_shm_display *) display;
83   struct pipe_screen *screen = shmdpy->base.base.screen;
84   struct pipe_resource *resource;
85   struct winsys_handle wsh;
86   uint width, height;
87   uint32_t format;
88
89   resource = resource_surface_get_single_resource(surface->rsurf, attachment);
90   resource_surface_get_size(surface->rsurf, &width, &height);
91
92   screen->resource_get_handle(screen, resource, &wsh);
93
94   pipe_resource_reference(&resource, NULL);
95
96   switch (surface->color_format) {
97   case PIPE_FORMAT_B8G8R8A8_UNORM:
98      format = (surface->premultiplied_alpha) ?
99         WL_SHM_FORMAT_PREMULTIPLIED_ARGB32 : WL_SHM_FORMAT_ARGB32;
100      break;
101   case PIPE_FORMAT_B8G8R8X8_UNORM:
102      format = WL_SHM_FORMAT_XRGB32;
103      break;
104   default:
105      return NULL;
106      break;
107   }
108
109   return wl_shm_create_buffer(shmdpy->wl_shm, wsh.fd,
110                               width, height,
111                               wsh.stride, format);
112}
113
114static boolean
115wayland_shm_display_add_configs(struct wayland_shm_display *shmdpy)
116{
117   struct wayland_config *configs;
118   enum pipe_format formats[2];
119   int i, num_formats = 0;
120
121   /* assume all formats are supported */
122   formats[num_formats++] = PIPE_FORMAT_B8G8R8A8_UNORM;
123   formats[num_formats++] = PIPE_FORMAT_B8G8R8X8_UNORM;
124
125   configs = CALLOC(num_formats, sizeof(*configs));
126   if (!configs)
127      return FALSE;
128
129   for (i = 0; i < num_formats; i++) {
130      struct native_config *nconf = &configs[i].base;
131
132      nconf->buffer_mask =
133         (1 << NATIVE_ATTACHMENT_FRONT_LEFT) |
134         (1 << NATIVE_ATTACHMENT_BACK_LEFT);
135
136      nconf->color_format = formats[i];
137
138      nconf->window_bit = TRUE;
139      nconf->pixmap_bit = TRUE;
140   }
141
142   shmdpy->base.configs = configs;
143   shmdpy->base.num_configs = num_formats;
144
145   return TRUE;
146}
147
148static boolean
149wayland_shm_display_init_screen(struct native_display *ndpy)
150{
151   struct wayland_shm_display *shmdpy = wayland_shm_display(ndpy);
152   struct sw_winsys *winsys = NULL;
153   uint32_t id;
154
155   id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
156   if (id == 0)
157      wl_display_iterate(shmdpy->base.dpy, WL_DISPLAY_READABLE);
158   id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
159   if (id == 0)
160      return FALSE;
161
162   shmdpy->wl_shm = wl_display_bind(shmdpy->base.dpy, id, &wl_shm_interface);
163   if (!shmdpy->wl_shm)
164      return FALSE;
165
166   if (!wayland_shm_display_add_configs(shmdpy))
167      return FALSE;
168
169   /* assume all formats are supported */
170   shmdpy->base.param_premultiplied_alpha = TRUE;
171
172   winsys = wayland_create_sw_winsys(shmdpy->base.dpy);
173   if (!winsys)
174      return FALSE;
175
176   shmdpy->base.base.screen =
177      shmdpy->event_handler->new_sw_screen(&shmdpy->base.base, winsys);
178
179   if (!shmdpy->base.base.screen) {
180      _eglLog(_EGL_WARNING, "failed to create shm screen");
181      return FALSE;
182   }
183
184   return TRUE;
185}
186
187struct wayland_display *
188wayland_create_shm_display(struct wl_display *dpy,
189                           const struct native_event_handler *event_handler)
190{
191   struct wayland_shm_display *shmdpy;
192
193   shmdpy = CALLOC_STRUCT(wayland_shm_display);
194   if (!shmdpy)
195      return NULL;
196
197   shmdpy->event_handler = event_handler;
198
199   shmdpy->base.dpy = dpy;
200   if (!shmdpy->base.dpy) {
201      wayland_shm_display_destroy(&shmdpy->base.base);
202      return NULL;
203   }
204
205   shmdpy->base.base.init_screen = wayland_shm_display_init_screen;
206   shmdpy->base.base.destroy = wayland_shm_display_destroy;
207   shmdpy->base.create_buffer = wayland_create_shm_buffer;
208
209   return &shmdpy->base;
210}
211
212/* vim: set sw=3 ts=8 sts=3 expandtab: */
213