mpv/video/out/gl_x11egl.c

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/*
* This file is part of mpv.
*
* 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/>.
*
* You can alternatively redistribute this file 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.
*/
#include <X11/Xlib.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include "common/common.h"
#include "x11_common.h"
#include "gl_common.h"
struct priv {
EGLDisplay egl_display;
EGLContext egl_context;
EGLSurface egl_surface;
};
static EGLConfig select_fb_config_egl(struct MPGLContext *ctx, bool es)
{
struct priv *p = ctx->priv;
EGLint attributes[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_DEPTH_SIZE, 0,
EGL_RENDERABLE_TYPE, es ? EGL_OPENGL_ES2_BIT : EGL_OPENGL_BIT,
EGL_NONE
};
EGLint config_count;
EGLConfig config;
eglChooseConfig(p->egl_display, attributes, &config, 1, &config_count);
if (!config_count) {
MP_FATAL(ctx->vo, "Could find EGL configuration!\n");
return NULL;
}
return config;
}
static bool create_context_egl(MPGLContext *ctx, EGLConfig config,
EGLNativeWindowType window, bool es)
{
struct priv *p = ctx->priv;
EGLint context_attributes[] = {
EGL_CONTEXT_CLIENT_VERSION, // aka EGL_CONTEXT_MAJOR_VERSION_KHR
es ? 2 : MPGL_VER_GET_MAJOR(ctx->requested_gl_version),
EGL_NONE
};
p->egl_surface = eglCreateWindowSurface(p->egl_display, config, window, NULL);
if (p->egl_surface == EGL_NO_SURFACE) {
MP_FATAL(ctx->vo, "Could not create EGL surface!\n");
return false;
}
p->egl_context = eglCreateContext(p->egl_display, config,
EGL_NO_CONTEXT, context_attributes);
if (p->egl_context == EGL_NO_CONTEXT) {
MP_FATAL(ctx->vo, "Could not create EGL context!\n");
return false;
}
eglMakeCurrent(p->egl_display, p->egl_surface, p->egl_surface,
p->egl_context);
return true;
}
static bool config_window_x11_egl_(struct MPGLContext *ctx, int flags, bool es)
{
struct priv *p = ctx->priv;
struct vo *vo = ctx->vo;
if (p->egl_context) {
vo_x11_config_vo_window(vo, NULL, flags, "gl");
return true;
}
if (!eglBindAPI(es ? EGL_OPENGL_ES_API : EGL_OPENGL_API))
return false;
p->egl_display = eglGetDisplay(vo->x11->display);
if (!eglInitialize(p->egl_display, NULL, NULL))
return false;
EGLConfig config = select_fb_config_egl(ctx, es);
if (!config)
return false;
int vID, n;
eglGetConfigAttrib(p->egl_display, config, EGL_NATIVE_VISUAL_ID, &vID);
XVisualInfo template = {.visualid = vID};
XVisualInfo *vi = XGetVisualInfo(vo->x11->display, VisualIDMask, &template, &n);
if (!vi) {
MP_FATAL(ctx->vo, "Getting X visual failed!\n");
return false;
}
vo_x11_config_vo_window(vo, vi, flags, "gl");
XFree(vi);
if (!create_context_egl(ctx, config, (EGLNativeWindowType)vo->x11->window, es))
{
vo_x11_uninit(ctx->vo);
return false;
}
void *(*gpa)(const GLubyte*) = (void *(*)(const GLubyte*))eglGetProcAddress;
mpgl_load_functions(ctx->gl, gpa, NULL, vo->log);
return true;
}
static bool config_window_x11_egl(struct MPGLContext *ctx, int flags)
{
return config_window_x11_egl_(ctx, flags, false);
}
static bool config_window_x11_egles(struct MPGLContext *ctx, int flags)
{
return config_window_x11_egl_(ctx, flags, true);
}
static void releaseGlContext_egl(MPGLContext *ctx)
{
struct priv *p = ctx->priv;
if (p->egl_context) {
eglMakeCurrent(p->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
eglDestroyContext(p->egl_display, p->egl_context);
}
p->egl_context = EGL_NO_CONTEXT;
}
static void swapGlBuffers_egl(MPGLContext *ctx)
{
struct priv *p = ctx->priv;
eglSwapBuffers(p->egl_display, p->egl_surface);
}
void mpgl_set_backend_x11egl(MPGLContext *ctx)
{
ctx->priv = talloc_zero(ctx, struct priv);
ctx->config_window = config_window_x11_egl;
ctx->releaseGlContext = releaseGlContext_egl;
ctx->swapGlBuffers = swapGlBuffers_egl;
ctx->vo_init = vo_x11_init;
ctx->vo_uninit = vo_x11_uninit;
ctx->vo_control = vo_x11_control;
}
void mpgl_set_backend_x11egles(MPGLContext *ctx)
{
ctx->priv = talloc_zero(ctx, struct priv);
ctx->config_window = config_window_x11_egles;
ctx->releaseGlContext = releaseGlContext_egl;
ctx->swapGlBuffers = swapGlBuffers_egl;
ctx->vo_init = vo_x11_init;
ctx->vo_uninit = vo_x11_uninit;
ctx->vo_control = vo_x11_control;
}