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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2013 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Jason Wilkins
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file ghost/intern/GHOST_ContextWGL.h
* \ingroup GHOST
*/
#ifndef __GHOST_CONTEXTWGL_H__
#define __GHOST_CONTEXTWGL_H__
#include "GHOST_Context.h"
#ifdef WITH_GLEW_MX
#define wglewGetContext() wglewContext
#endif
#include <GL/wglew.h>
#ifdef WITH_GLEW_MX
extern "C" WGLEWContext *wglewContext;
#endif
#ifndef GHOST_OPENGL_WGL_CONTEXT_FLAGS
#define GHOST_OPENGL_WGL_CONTEXT_FLAGS 0
#endif
#ifndef GHOST_OPENGL_WGL_RESET_NOTIFICATION_STRATEGY
#define GHOST_OPENGL_WGL_RESET_NOTIFICATION_STRATEGY 0
#endif
class GHOST_ContextWGL : public GHOST_Context
{
public:
/**
* Constructor.
*/
GHOST_ContextWGL(
bool stereoVisual,
GHOST_TUns16 numOfAASamples,
HWND hWnd,
HDC hDC,
int contextProfileMask,
int contextMajorVersion,
int contextMinorVersion,
int contextFlags,
int contextResetNotificationStrategy);
/**
* Destructor.
*/
virtual ~GHOST_ContextWGL();
/**
* Swaps front and back buffers of a window.
* \return A boolean success indicator.
*/
virtual GHOST_TSuccess swapBuffers();
/**
* Activates the drawing context of this window.
* \return A boolean success indicator.
*/
virtual GHOST_TSuccess activateDrawingContext();
/**
* Call immediately after new to initialize. If this fails then immediately delete the object.
* \return Indication as to whether initialization has succeeded.
*/
virtual 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
*/
virtual GHOST_TSuccess releaseNativeHandles();
/**
* Sets the swap interval for swapBuffers.
* \param interval The swap interval to use.
* \return A boolean success indicator.
*/
virtual 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.
*/
virtual GHOST_TSuccess getSwapInterval(int &intervalOut);
protected:
inline void activateWGLEW() const {
#ifdef WITH_GLEW_MX
wglewContext = m_wglewContext;
#endif
}
private:
int choose_pixel_format(
bool stereoVisual,
int numOfAASamples,
bool needAlpha,
bool needStencil,
bool sRGB);
int choose_pixel_format_arb(
bool stereoVisual,
int numOfAASamples,
bool needAlpha,
bool needStencil,
bool sRGB);
int _choose_pixel_format_arb_1(
bool stereoVisual,
int numOfAASamples,
bool needAlpha,
bool needStencil,
bool sRGB,
int &swapMethodOut);
int _choose_pixel_format_arb_2(
bool stereoVisual,
int numOfAASamples,
bool needAlpha,
bool needStencil,
bool sRGB,
int swapMethod);
void initContextWGLEW(PIXELFORMATDESCRIPTOR &preferredPFD);
HDC m_hDC;
HWND m_hWnd;
const int m_contextProfileMask;
const int m_contextMajorVersion;
const int m_contextMinorVersion;
const int m_contextFlags;
const int m_contextResetNotificationStrategy;
HGLRC m_hGLRC;
#ifdef WITH_GLEW_MX
WGLEWContext *m_wglewContext;
#endif
#ifndef NDEBUG
const char *m_dummyVendor;
const char *m_dummyRenderer;
const char *m_dummyVersion;
#endif
static HGLRC s_sharedHGLRC;
static int s_sharedCount;
static bool s_singleContextMode;
};
#endif // __GHOST_CONTEXTWGL_H__
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