native_shm.c revision 93a96abe16068fa3ca8a1eb8d1c34195bffdc470 
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 = WL_SHM_FORMAT_PREMULTIPLIED_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 boolean
114wayland_shm_display_add_configs(struct wayland_shm_display *shmdpy)
115{
116   struct wayland_config *configs;
117   enum pipe_format formats[2];
118   int i, num_formats = 0;
119
120   /* assume all formats are supported */
121   formats[num_formats++] = PIPE_FORMAT_B8G8R8A8_UNORM;
122   formats[num_formats++] = PIPE_FORMAT_B8G8R8X8_UNORM;
123
124   configs = CALLOC(num_formats, sizeof(*configs));
125   if (!configs)
126      return FALSE;
127
128   for (i = 0; i < num_formats; i++) {
129      struct native_config *nconf = &configs[i].base;
130
131      nconf->buffer_mask =
132         (1 << NATIVE_ATTACHMENT_FRONT_LEFT) |
133         (1 << NATIVE_ATTACHMENT_BACK_LEFT);
134
135      nconf->color_format = formats[i];
136
137      nconf->window_bit = TRUE;
138      nconf->pixmap_bit = TRUE;
139   }
140
141   shmdpy->base.configs = configs;
142   shmdpy->base.num_configs = num_formats;
143
144   return TRUE;
145}
146
147static boolean
148wayland_shm_display_init_screen(struct native_display *ndpy)
149{
150   struct wayland_shm_display *shmdpy = wayland_shm_display(ndpy);
151   struct sw_winsys *winsys = NULL;
152   uint32_t id;
153
154   id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
155   if (id == 0)
156      wl_display_iterate(shmdpy->base.dpy, WL_DISPLAY_READABLE);
157   id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
158   if (id == 0)
159      return FALSE;
160
161   shmdpy->wl_shm = wl_display_bind(shmdpy->base.dpy, id, &wl_shm_interface);
162   if (!shmdpy->wl_shm)
163      return FALSE;
164
165   if (!wayland_shm_display_add_configs(shmdpy))
166      return FALSE;
167
168   winsys = wayland_create_sw_winsys(shmdpy->base.dpy);
169   if (!winsys)
170      return FALSE;
171
172   shmdpy->base.base.screen =
173      shmdpy->event_handler->new_sw_screen(&shmdpy->base.base, winsys);
174
175   if (!shmdpy->base.base.screen) {
176      _eglLog(_EGL_WARNING, "failed to create shm screen");
177      return FALSE;
178   }
179
180   return TRUE;
181}
182
183struct wayland_display *
184wayland_create_shm_display(struct wl_display *dpy,
185                           const struct native_event_handler *event_handler)
186{
187   struct wayland_shm_display *shmdpy;
188
189   shmdpy = CALLOC_STRUCT(wayland_shm_display);
190   if (!shmdpy)
191      return NULL;
192
193   shmdpy->event_handler = event_handler;
194
195   shmdpy->base.dpy = dpy;
196   if (!shmdpy->base.dpy) {
197      wayland_shm_display_destroy(&shmdpy->base.base);
198      return NULL;
199   }
200
201   shmdpy->base.base.init_screen = wayland_shm_display_init_screen;
202   shmdpy->base.base.destroy = wayland_shm_display_destroy;
203   shmdpy->base.create_buffer = wayland_create_shm_buffer;
204
205   return &shmdpy->base;
206}
207
208/* vim: set sw=3 ts=8 sts=3 expandtab: */
209