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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2013 Blender Foundation. All rights reserved. */
/** \file
* \ingroup GHOST
*/
#pragma once
//#define WIN32_COMPOSITING
#include "GHOST_Context.h"
#include <epoxy/wgl.h>
#ifndef GHOST_OPENGL_WGL_RESET_NOTIFICATION_STRATEGY
# define GHOST_OPENGL_WGL_RESET_NOTIFICATION_STRATEGY 0
#endif
class GHOST_ContextWGL : public GHOST_Context {
/* XR code needs low level graphics data to send to OpenXR. */
friend class GHOST_XrGraphicsBindingOpenGL;
public:
/**
* Constructor.
*/
GHOST_ContextWGL(bool stereoVisual,
bool alphaBackground,
HWND hWnd,
HDC hDC,
int contextProfileMask,
int contextMajorVersion,
int contextMinorVersion,
int contextFlags,
int contextResetNotificationStrategy);
/**
* Destructor.
*/
~GHOST_ContextWGL();
/**
* Swaps front and back buffers of a window.
* \return A boolean success indicator.
*/
GHOST_TSuccess swapBuffers();
/**
* Activates the drawing context of this window.
* \return A boolean success indicator.
*/
GHOST_TSuccess activateDrawingContext();
/**
* Release the drawing context of the calling thread.
* \return A boolean success indicator.
*/
GHOST_TSuccess releaseDrawingContext();
/**
* Call immediately after new to initialize. If this fails then immediately delete the object.
* \return Indication as to whether initialization has succeeded.
*/
GHOST_TSuccess initializeDrawingContext();
/**
* Removes references to native handles from this context and then returns
* \return GHOST_kSuccess if it is OK for the parent to release the handles and
* GHOST_kFailure if releasing the handles will interfere with sharing
*/
GHOST_TSuccess releaseNativeHandles();
/**
* Sets the swap interval for #swapBuffers.
* \param interval: The swap interval to use.
* \return A boolean success indicator.
*/
GHOST_TSuccess setSwapInterval(int interval);
/**
* Gets the current swap interval for #swapBuffers.
* \param intervalOut: Variable to store the swap interval if it can be read.
* \return Whether the swap interval can be read.
*/
GHOST_TSuccess getSwapInterval(int &intervalOut);
private:
int choose_pixel_format_arb(bool stereoVisual, bool needAlpha);
int _choose_pixel_format_arb_1(bool stereoVisual, bool needAlpha);
HWND m_hWnd;
HDC m_hDC;
const int m_contextProfileMask;
const int m_contextMajorVersion;
const int m_contextMinorVersion;
const int m_contextFlags;
const bool m_alphaBackground;
const int m_contextResetNotificationStrategy;
HGLRC m_hGLRC;
#ifndef NDEBUG
const char *m_dummyVendor;
const char *m_dummyRenderer;
const char *m_dummyVersion;
#endif
static HGLRC s_sharedHGLRC;
static int s_sharedCount;
};
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