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/*
* 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.
*/
/** \file
* \ingroup GHOST
*/
#pragma once
#include "GHOST_Context.h"
#include "GHOST_System.h"
#include <GL/eglew.h>
#ifndef GHOST_OPENGL_EGL_CONTEXT_FLAGS
# define GHOST_OPENGL_EGL_CONTEXT_FLAGS 0
#endif
#ifndef GHOST_OPENGL_EGL_RESET_NOTIFICATION_STRATEGY
# define GHOST_OPENGL_EGL_RESET_NOTIFICATION_STRATEGY 0
#endif
class GHOST_ContextEGL : public GHOST_Context {
/* XR code needs low level graphics data to send to OpenXR. */
friend class GHOST_XrGraphicsBindingOpenGL;
public:
/**
* Constructor.
*/
GHOST_ContextEGL(const GHOST_System *const system,
bool stereoVisual,
EGLNativeWindowType nativeWindow,
EGLNativeDisplayType nativeDisplay,
EGLint contextProfileMask,
EGLint contextMajorVersion,
EGLint contextMinorVersion,
EGLint contextFlags,
EGLint contextResetNotificationStrategy,
EGLenum api);
/**
* Destructor.
*/
~GHOST_ContextEGL();
/**
* 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);
EGLDisplay getDisplay() const;
EGLConfig getConfig() const;
EGLContext getContext() const;
private:
bool initContextEGLEW();
const GHOST_System *const m_system;
EGLNativeDisplayType m_nativeDisplay;
EGLNativeWindowType m_nativeWindow;
const EGLint m_contextProfileMask;
const EGLint m_contextMajorVersion;
const EGLint m_contextMinorVersion;
const EGLint m_contextFlags;
const EGLint m_contextResetNotificationStrategy;
const EGLenum m_api;
EGLContext m_context;
EGLSurface m_surface;
EGLDisplay m_display;
EGLConfig m_config;
EGLint m_swap_interval;
EGLContext &m_sharedContext;
EGLint &m_sharedCount;
static EGLContext s_gl_sharedContext;
static EGLint s_gl_sharedCount;
static EGLContext s_gles_sharedContext;
static EGLint s_gles_sharedCount;
static EGLContext s_vg_sharedContext;
static EGLint s_vg_sharedCount;
#ifdef WITH_GL_ANGLE
static HMODULE s_d3dcompiler;
#endif
};
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