summaryrefslogtreecommitdiffstats
path: root/video/out/opengl/context_wayland.c
blob: 7975d96a2ac632727bccd73404650c07c5a0d22d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
/*
 * This file is part of mpv video player.
 * Copyright © 2013 Alexander Preisinger <alexander.preisinger@gmail.com>
 *
 * mpv is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * mpv is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "video/out/wayland_common.h"
#include "context.h"
#include "egl_helpers.h"

static void egl_resize(struct vo_wayland_state *wl)
{
    int32_t scale = 1;

    if (!wl->egl_context.egl_window)
        return;

    if (wl->display.current_output)
        scale = wl->display.current_output->scale;

    const int32_t width = wl->window.sh_width;
    const int32_t height = wl->window.sh_height;

    wl->vo->dwidth = scale*width;
    wl->vo->dheight = scale*height;

    MP_VERBOSE(wl, "resizing %dx%d -> %dx%d\n", wl->window.width,
                                                wl->window.height,
                                                width,
                                                height);

    wl_surface_set_buffer_scale(wl->window.video_surface, scale);
    wl_egl_window_resize(wl->egl_context.egl_window, scale*width, scale*height, 0, 0);

    wl->window.width = width;
    wl->window.height = height;

    wl->vo->want_redraw = true;
}

static int egl_create_context(struct vo_wayland_state *wl, MPGLContext *ctx,
                              int flags)
{
    GL *gl = ctx->gl;
    const char *eglstr = "";

    if (!(wl->egl_context.egl.dpy = eglGetDisplay(wl->display.display)))
        return -1;

    if (eglInitialize(wl->egl_context.egl.dpy, NULL, NULL) != EGL_TRUE)
        return -1;

    if (!mpegl_create_context(wl->egl_context.egl.dpy, wl->log, flags,
                              &wl->egl_context.egl.ctx,
                              &wl->egl_context.egl.conf))
        return -1;

    eglMakeCurrent(wl->egl_context.egl.dpy, NULL, NULL, wl->egl_context.egl.ctx);

    eglstr = eglQueryString(wl->egl_context.egl.dpy, EGL_EXTENSIONS);

    mpgl_load_functions(gl, (void*(*)(const GLubyte*))eglGetProcAddress, eglstr,
                        wl->log);

    ctx->native_display_type = "wl";
    ctx->native_display = wl->display.display;

    return 0;
}

static void egl_create_window(struct vo_wayland_state *wl)
{
    wl->egl_context.egl_window = wl_egl_window_create(wl->window.video_surface,
                                                      wl->window.width,
                                                      wl->window.height);

    wl->egl_context.egl_surface = eglCreateWindowSurface(wl->egl_context.egl.dpy,
                                                         wl->egl_context.egl.conf,
                                                         wl->egl_context.egl_window,
                                                         NULL);

    eglMakeCurrent(wl->egl_context.egl.dpy,
                   wl->egl_context.egl_surface,
                   wl->egl_context.egl_surface,
                   wl->egl_context.egl.ctx);

    wl_display_dispatch_pending(wl->display.display);

    /**
     * <http://lists.freedesktop.org/archives/wayland-devel/2013-November/012019.html>
     *
     * The main change is that if the swap interval is 0 then Mesa won't install a
     * frame callback so that eglSwapBuffers can be executed as often as necessary.
     * Instead it will do a sync request after the swap buffers. It will block for
     * sync complete event in get_back_bo instead of the frame callback. The
     * compositor is likely to send a release event while processing the new buffer
     * attach and this makes sure we will receive that before deciding whether to
     * allocate a new buffer.
     */

    eglSwapInterval(wl->egl_context.egl.dpy, 0);
}

static int waylandgl_reconfig(struct MPGLContext *ctx)
{
    struct vo_wayland_state * wl = ctx->vo->wayland;

    if (!vo_wayland_config(ctx->vo))
        return -1;

    if (!wl->egl_context.egl_window)
        egl_create_window(wl);

    return 0;
}

static void waylandgl_uninit(MPGLContext *ctx)
{
    struct vo_wayland_state *wl = ctx->vo->wayland;

    if (wl->egl_context.egl.ctx) {
        eglReleaseThread();
        if (wl->egl_context.egl_window)
            wl_egl_window_destroy(wl->egl_context.egl_window);
        eglDestroySurface(wl->egl_context.egl.dpy, wl->egl_context.egl_surface);
        eglMakeCurrent(wl->egl_context.egl.dpy, NULL, NULL, EGL_NO_CONTEXT);
        eglDestroyContext(wl->egl_context.egl.dpy, wl->egl_context.egl.ctx);
    }
    eglTerminate(wl->egl_context.egl.dpy);
    wl->egl_context.egl.ctx = NULL;

    vo_wayland_uninit(ctx->vo);
}

static void waylandgl_swap_buffers(MPGLContext *ctx)
{
    struct vo_wayland_state *wl = ctx->vo->wayland;

    if (!wl->frame.callback)
        vo_wayland_request_frame(ctx->vo, NULL, NULL);

    vo_wayland_wait_events(ctx->vo, 0);

    eglSwapBuffers(wl->egl_context.egl.dpy, wl->egl_context.egl_surface);
}

static int waylandgl_control(MPGLContext *ctx, int *events, int request,
                             void *data)
{
    struct vo_wayland_state *wl = ctx->vo->wayland;
    int r = vo_wayland_control(ctx->vo, events, request, data);

    if (*events & VO_EVENT_RESIZE)
        egl_resize(wl);

    return r;
}

static void wayland_wakeup(struct MPGLContext *ctx)
{
    vo_wayland_wakeup(ctx->vo);
}

static void wayland_wait_events(struct MPGLContext *ctx, int64_t until_time_us)
{
    vo_wayland_wait_events(ctx->vo, until_time_us);
}

static int waylandgl_init(struct MPGLContext *ctx, int flags)
{
    if (!vo_wayland_init(ctx->vo))
        return -1;

    return egl_create_context(ctx->vo->wayland, ctx, flags);
}

const struct mpgl_driver mpgl_driver_wayland = {
    .name           = "wayland",
    .init           = waylandgl_init,
    .reconfig       = waylandgl_reconfig,
    .swap_buffers   = waylandgl_swap_buffers,
    .control        = waylandgl_control,
    .wakeup         = wayland_wakeup,
    .wait_events    = wayland_wait_events,
    .uninit         = waylandgl_uninit,
};