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mpv/video/out/opengl/context_wayland.c

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/*
* 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"
static void egl_resize(struct vo_wayland_state *wl)
{
int32_t x = wl->window.sh_x;
int32_t y = wl->window.sh_y;
int32_t width = wl->window.sh_width;
int32_t height = wl->window.sh_height;
if (!wl->egl_context.egl_window)
return;
// get the real size of the window
// this improves moving the window while resizing it
wl_egl_window_get_attached_size(wl->egl_context.egl_window,
&wl->window.width,
&wl->window.height);
MP_VERBOSE(wl, "resizing %dx%d -> %dx%d\n", wl->window.width,
wl->window.height,
width,
height);
if (x != 0)
x = wl->window.width - width;
if (y != 0)
y = wl->window.height - height;
wl_egl_window_resize(wl->egl_context.egl_window, width, height, x, y);
wl->window.width = width;
wl->window.height = height;
/* set size for mplayer */
wl->vo->dwidth = wl->window.width;
wl->vo->dheight = wl->window.height;
wl->vo->want_redraw = true;
wl->window.events = 0;
}
static int egl_create_context(struct vo_wayland_state *wl,
MPGLContext *ctx,
bool enable_alpha)
{
EGLint major, minor, n;
GL *gl = ctx->gl;
const char *eglstr = "";
if (!(wl->egl_context.egl.dpy = eglGetDisplay(wl->display.display)))
return -1;
EGLint config_attribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_ALPHA_SIZE, enable_alpha,
EGL_DEPTH_SIZE, 1,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_NONE
};
/* major and minor here returns the supported EGL version (e.g.: 1.4) */
if (eglInitialize(wl->egl_context.egl.dpy, &major, &minor) != EGL_TRUE)
return -1;
MP_VERBOSE(wl, "EGL version %d.%d\n", major, minor);
EGLint context_attribs[] = {
// aka EGL_CONTEXT_MAJOR_VERSION_KHR
EGL_CONTEXT_CLIENT_VERSION, 3,
EGL_NONE
};
if (eglBindAPI(EGL_OPENGL_API) != EGL_TRUE)
return -1;
eglChooseConfig(wl->egl_context.egl.dpy, config_attribs,
&wl->egl_context.egl.conf, 1, &n);
wl->egl_context.egl.ctx = eglCreateContext(wl->egl_context.egl.dpy,
wl->egl_context.egl.conf,
EGL_NO_CONTEXT,
context_attribs);
if (!wl->egl_context.egl.ctx) {
/* fallback to any GL version */
MP_WARN(wl, "can't create context for requested OpenGL version: "
"fall back to any version available\n");
context_attribs[0] = EGL_NONE;
wl->egl_context.egl.ctx = eglCreateContext(wl->egl_context.egl.dpy,
wl->egl_context.egl.conf,
EGL_NO_CONTEXT,
context_attribs);
if (!wl->egl_context.egl.ctx)
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();
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);
if (!vo_wayland_wait_frame(ctx->vo))
MP_DBG(wl, "discarding frame callback\n");
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 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 & VOFLAG_ALPHA));
}
const struct mpgl_driver mpgl_driver_wayland = {
.name = "wayland",
.init = waylandgl_init,
.reconfig = waylandgl_reconfig,
.swap_buffers = waylandgl_swap_buffers,
.control = waylandgl_control,
.uninit = waylandgl_uninit,
};
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