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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 <windows.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include "common/common.h"
#include "video/out/w32_common.h"
#include "common.h"
struct priv {
EGLDisplay egl_display;
EGLContext egl_context;
EGLSurface egl_surface;
HMODULE libglesv2;
};
static void angle_uninit(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;
if (p->libglesv2)
FreeLibrary(p->libglesv2);
vo_w32_uninit(ctx->vo);
}
static EGLConfig select_fb_config_egl(struct MPGLContext *ctx)
{
struct priv *p = ctx->priv;
EGLint attributes[] = {
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_DEPTH_SIZE, 0,
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)
{
struct priv *p = ctx->priv;
EGLint context_attributes[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
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 void *get_proc_address(const GLubyte *proc_name)
{
void *res = eglGetProcAddress(proc_name);
if (res)
return res;
// ANGLE's eglGetProcAddress only works for extensions
return GetProcAddress(GetModuleHandleW(L"libGLESv2.dll"), proc_name);
}
static int angle_init(struct MPGLContext *ctx, int flags)
{
struct priv *p = ctx->priv;
struct vo *vo = ctx->vo;
if (!vo_w32_init(vo))
goto fail;
p->libglesv2 = LoadLibraryW(L"libGLESv2.dll");
if (!p->libglesv2) {
MP_FATAL(vo, "Couldn't load GLES functions\n");
goto fail;
}
HDC dc = GetDC(vo_w32_hwnd(vo));
if (!dc) {
MP_FATAL(vo, "Couldn't get DC\n");
goto fail;
}
PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT =
(PFNEGLGETPLATFORMDISPLAYEXTPROC)eglGetProcAddress("eglGetPlatformDisplayEXT");
if (!eglGetPlatformDisplayEXT) {
MP_FATAL(vo, "Missing EGL_EXT_platform_base\n");
goto fail;
}
EGLint display_attributes[] = {
EGL_PLATFORM_ANGLE_TYPE_ANGLE,
EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE,
EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE,
EGL_NONE,
};
p->egl_display = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, dc,
display_attributes);
if (p->egl_display == EGL_NO_DISPLAY) {
MP_FATAL(vo, "Couldn't get display\n");
goto fail;
}
if (!eglInitialize(p->egl_display, NULL, NULL)) {
MP_FATAL(vo, "Couldn't initialize EGL\n");
goto fail;
}
eglBindAPI(EGL_OPENGL_ES_API);
if (eglGetError() != EGL_SUCCESS) {
MP_FATAL(vo, "Couldn't bind GLES API\n");
goto fail;
}
EGLConfig config = select_fb_config_egl(ctx);
if (!config)
goto fail;
if (!create_context_egl(ctx, config, vo_w32_hwnd(vo)))
goto fail;
mpgl_load_functions(ctx->gl, get_proc_address, NULL, vo->log);
return 0;
fail:
angle_uninit(ctx);
return -1;
}
static int angle_reconfig(struct MPGLContext *ctx)
{
vo_w32_config(ctx->vo);
return 0;
}
static int angle_control(MPGLContext *ctx, int *events, int request, void *arg)
{
return vo_w32_control(ctx->vo, events, request, arg);
}
static void angle_swap_buffers(MPGLContext *ctx)
{
struct priv *p = ctx->priv;
eglSwapBuffers(p->egl_display, p->egl_surface);
}
const struct mpgl_driver mpgl_driver_angle = {
.name = "angle",
.priv_size = sizeof(struct priv),
.init = angle_init,
.reconfig = angle_reconfig,
.swap_buffers = angle_swap_buffers,
.control = angle_control,
.uninit = angle_uninit,
};
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