godot/platform/osx/context_gl_osx.cpp

/*************************************************************************/
/*  context_gl_osx.cpp                                                   */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
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#include "context_gl_osx.h"

#ifdef OSX_ENABLED
#if defined(OPENGL_ENABLED) || defined(LEGACYGL_ENABLED)
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092

void ContextGL_OSX::release_current() {

	aglSetCurrentContext(context);
}

void ContextGL_OSX::make_current() {

	aglSetCurrentContext(NULL);
}
void ContextGL_OSX::swap_buffers() {

	aglSwapBuffers(context);
}

Error ContextGL_OSX::initialize() {

	if ((Ptr)kUnresolvedCFragSymbolAddress == (Ptr)aglChoosePixelFormat)
		return FAILED;

	GLint attributes[] = { AGL_RGBA,
		AGL_DOUBLEBUFFER,
		AGL_DEPTH_SIZE, 32,
		AGL_NO_RECOVERY,
		AGL_NONE,
		AGL_NONE };

	AGLPixelFormat format = NULL;

	format = aglChoosePixelFormat(NULL, 0, attributes);

	if (!format)
		return FAILED;

	context = aglCreateContext(format, 0);

	if (!context)
		return FAILED;

	aglDestroyPixelFormat(format);

	aglSetWindowRef(context, window);

	GLint swapInterval = 1;
	aglSetInteger(context, AGL_SWAP_INTERVAL, &swapInterval);

	aglSetCurrentContext(context);

	return OK;
}

ContextGL_OSX::ContextGL_OSX(WindowRef p_window) {

	window = p_window;
}

ContextGL_OSX::~ContextGL_OSX() {

	if (context)
		aglDestroyContext(context);
}

#endif
#endif