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/*
* The ManaPlus Client
* Copyright (C) 2014 The ManaPlus Developers
*
* This file is part of The ManaPlus Client.
*
* 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
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "utils/glxhelper.h"
#if defined(USE_OPENGL) && defined(USE_X11)
#include "logger.h"
#include "render/mglcheck.h"
#include "render/mglx.h"
#include "render/mglxtypes.h"
#include "utils/stringutils.h"
#include "debug.h"
static int ErrorHandler(Display *d A_UNUSED, XErrorEvent *e A_UNUSED)
{
return 0;
}
void *GlxHelper::createContext(const unsigned long window,
void *const display0,
const int major,
const int minor,
const int profile)
{
Display *const display = static_cast<Display*>(display0);
XSync(display, false);
int (*handler) (Display *, XErrorEvent *) = XSetErrorHandler(ErrorHandler);
void *context = mglXGetCurrentContext();
if (isGLNull(mglXGetCurrentContext)
|| isGLNull(mglXCreateContextAttribs)
|| isGLNull(mglXChooseFBConfig))
{
logger->log("Cant change context, functions in driver "
"not implimented");
XSetErrorHandler(handler);
return context;
}
if (!context)
{
logger->log("Cant change context, because current "
"context not created");
XSetErrorHandler(handler);
return context;
}
int glxAttribs[] =
{
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_RED_SIZE, 3,
GLX_GREEN_SIZE, 3,
GLX_BLUE_SIZE, 2,
GLX_DOUBLEBUFFER, 1,
0
};
int fbcount = 0;
GLXFBConfig *framebuffer_config = mglXChooseFBConfig(display,
DefaultScreen(display),
glxAttribs,
&fbcount);
if (!framebuffer_config || !fbcount)
{
logger->log("No correct fb profile found");
XSetErrorHandler(handler);
return nullptr;
}
int attribs[] =
{
GLX_CONTEXT_MAJOR_VERSION_ARB, major,
GLX_CONTEXT_MINOR_VERSION_ARB, minor,
GLX_CONTEXT_PROFILE_MASK_ARB, profile,
0, 0
};
void *const context2 = mglXCreateContextAttribs(display,
framebuffer_config[0], context, true, attribs);
if (!context2)
{
logger->log("context %d.%d creation failed", major, minor);
XSetErrorHandler(handler);
return nullptr;
}
XSync(display, false);
XSetErrorHandler(handler);
if (!mglXMakeCurrent(display, window, context2))
{
mglXDestroyContext(display, context2);
logger->log("make current context %d.%d failed", major, minor);
return nullptr;
}
// do not delete SDL context, because on exit it will crash
// mglXDestroyContext(display, context);
logger->log("Context for %d.%d created", major, minor);
return context2;
}
bool GlxHelper::makeCurrent(const unsigned long window,
void *const display,
void *const context)
{
return mglXMakeCurrent(static_cast<Display*>(display), window, context);
}
#endif // defined(USE_OPENGL) && defined(USE_X11)
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