virtualx-engine/platform/windows/context_gl_windows.h
hoontee c08d8feead
Fix Vsync Via Compositor causing halved refresh rate when vsync is forced by the graphics driver
Add check to prevent compositor sync if the graphics driver is forcing vsync.

Fixes #35038.

(Addendum: this PR does not negatively impact users unaffected by #35038.)
2020-01-15 16:04:23 -06:00

80 lines
3.1 KiB
C++

/*************************************************************************/
/* context_gl_windows.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#if defined(OPENGL_ENABLED) || defined(GLES_ENABLED)
// Author: Juan Linietsky <reduzio@gmail.com>, (C) 2008
#ifndef CONTEXT_GL_WIN_H
#define CONTEXT_GL_WIN_H
#include "core/error_list.h"
#include "core/os/os.h"
#include <windows.h>
typedef bool(APIENTRY *PFNWGLSWAPINTERVALEXTPROC)(int interval);
typedef int(APIENTRY *PFNWGLGETSWAPINTERVALEXTPROC)(void);
class ContextGL_Windows {
HDC hDC;
HGLRC hRC;
unsigned int pixel_format;
HWND hWnd;
bool opengl_3_context;
bool use_vsync;
bool vsync_via_compositor;
PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT;
PFNWGLGETSWAPINTERVALEXTPROC wglGetSwapIntervalEXT;
static bool should_vsync_via_compositor();
public:
void release_current();
void make_current();
int get_window_width();
int get_window_height();
void swap_buffers();
Error initialize();
void set_use_vsync(bool p_use);
bool is_using_vsync() const;
ContextGL_Windows(HWND hwnd, bool p_opengl_3_context);
~ContextGL_Windows();
};
#endif
#endif