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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 General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <wayland-egl.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include "wayland_common.h"
#include "gl_common.h"
struct egl_context {
EGLSurface egl_surface;
struct wl_egl_window *egl_window;
struct {
EGLDisplay dpy;
EGLContext ctx;
EGLConfig conf;
} egl;
};
static void egl_resize(struct vo_wayland_state *wl,
struct egl_context *ctx)
{
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;
// get the real size of the window
// this improves moving the window while resizing it
wl_egl_window_get_attached_size(ctx->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(ctx->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 bool egl_create_context(struct vo_wayland_state *wl,
struct egl_context *egl_ctx,
MPGLContext *ctx,
bool enable_alpha)
{
EGLint major, minor, n;
GL *gl = ctx->gl;
const char *eglstr = "";
if (!(egl_ctx->egl.dpy = eglGetDisplay(wl->display.display)))
return false;
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(egl_ctx->egl.dpy, &major, &minor) != EGL_TRUE)
return false;
MP_VERBOSE(wl, "EGL version %d.%d\n", major, minor);
EGLint context_attribs[] = {
EGL_CONTEXT_MAJOR_VERSION_KHR,
MPGL_VER_GET_MAJOR(ctx->requested_gl_version),
/* EGL_CONTEXT_MINOR_VERSION_KHR, */
/* MPGL_VER_GET_MINOR(ctx->requested_gl_version), */
/* EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR, 0, */
/* Segfaults on anything else than the major version */
EGL_NONE
};
if (eglBindAPI(EGL_OPENGL_API) != EGL_TRUE)
return false;
eglChooseConfig(egl_ctx->egl.dpy, config_attribs,
&egl_ctx->egl.conf, 1, &n);
egl_ctx->egl.ctx = eglCreateContext(egl_ctx->egl.dpy,
egl_ctx->egl.conf,
EGL_NO_CONTEXT,
context_attribs);
if (!egl_ctx->egl.ctx) {
/* fallback to any GL version */
context_attribs[0] = EGL_NONE;
egl_ctx->egl.ctx = eglCreateContext(egl_ctx->egl.dpy,
egl_ctx->egl.conf,
EGL_NO_CONTEXT,
context_attribs);
if (!egl_ctx->egl.ctx)
return false;
}
eglMakeCurrent(egl_ctx->egl.dpy, NULL, NULL, egl_ctx->egl.ctx);
eglstr = eglQueryString(egl_ctx->egl.dpy, EGL_EXTENSIONS);
mpgl_load_functions(gl, (void*(*)(const GLubyte*))eglGetProcAddress, eglstr,
wl->log);
if (!gl->BindProgram)
mpgl_load_functions(gl, NULL, eglstr, wl->log);
return true;
}
static void egl_create_window(struct vo_wayland_state *wl,
struct egl_context *egl_ctx,
uint32_t width,
uint32_t height)
{
egl_ctx->egl_window = wl_egl_window_create(wl->window.surface,
wl->window.width,
wl->window.height);
egl_ctx->egl_surface = eglCreateWindowSurface(egl_ctx->egl.dpy,
egl_ctx->egl.conf,
egl_ctx->egl_window,
NULL);
eglMakeCurrent(egl_ctx->egl.dpy,
egl_ctx->egl_surface,
egl_ctx->egl_surface,
egl_ctx->egl.ctx);
wl_display_dispatch_pending(wl->display.display);
}
static bool config_window_wayland(struct MPGLContext *ctx,
uint32_t d_width,
uint32_t d_height,
uint32_t flags)
{
struct egl_context * egl_ctx = ctx->priv;
struct vo_wayland_state * wl = ctx->vo->wayland;
bool enable_alpha = !!(flags & VOFLAG_ALPHA);
bool ret = false;
if (!vo_wayland_config(ctx->vo, d_width, d_height, flags))
return false;
if (!egl_ctx->egl.ctx) {
/* Create OpenGL context */
ret = egl_create_context(wl, egl_ctx, ctx, enable_alpha);
/* If successfully created the context and we don't want to hide the
* window than also create the window immediately */
if (ret && !(VOFLAG_HIDDEN & flags))
egl_create_window(wl, egl_ctx, d_width, d_height);
return ret;
}
else {
if (!egl_ctx->egl_window) {
/* If the context exists and the hidden flag is unset then
* create the window */
if (!(VOFLAG_HIDDEN & flags))
egl_create_window(wl, egl_ctx, d_width, d_height);
}
return true;
}
}
static void releaseGlContext_wayland(MPGLContext *ctx)
{
GL *gl = ctx->gl;
struct egl_context * egl_ctx = ctx->priv;
gl->Finish();
eglMakeCurrent(egl_ctx->egl.dpy, NULL, NULL, EGL_NO_CONTEXT);
eglDestroyContext(egl_ctx->egl.dpy, egl_ctx->egl.ctx);
eglTerminate(egl_ctx->egl.dpy);
eglReleaseThread();
wl_egl_window_destroy(egl_ctx->egl_window);
egl_ctx->egl.ctx = NULL;
}
static void swapGlBuffers_wayland(MPGLContext *ctx)
{
struct egl_context * egl_ctx = ctx->priv;
struct vo_wayland_state *wl = ctx->vo->wayland;
eglSwapBuffers(egl_ctx->egl.dpy, egl_ctx->egl_surface);
if (wl->window.events & VO_EVENT_RESIZE)
egl_resize(wl, egl_ctx);
}
void mpgl_set_backend_wayland(MPGLContext *ctx)
{
ctx->priv = talloc_zero(ctx, struct egl_context);
ctx->config_window = config_window_wayland;
ctx->releaseGlContext = releaseGlContext_wayland;
ctx->swapGlBuffers = swapGlBuffers_wayland;
ctx->vo_control = vo_wayland_control;
ctx->vo_init = vo_wayland_init;
ctx->vo_uninit = vo_wayland_uninit;
}
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