src/gallium/state_trackers/egl/wayland/native_shm.c

   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
  47 struct 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
  54 static INLINE struct wayland_shm_display *
  55 wayland_shm_display(const struct native_display *ndpy)
  56 {
  57    return (struct wayland_shm_display *) ndpy;
  58 }
  59
  60
  61 static void
  62 wayland_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
  77 static struct wl_buffer *
  78 wayland_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
 114 static boolean
 115 wayland_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
 148 static boolean
 149 wayland_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
 187 struct wayland_display *
 188 wayland_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: */