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/* |
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* The ManaPlus Client |
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* Copyright (C) 2014-2019 The ManaPlus Developers |
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* Copyright (C) 2019-2021 Andrei Karas |
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* |
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* This file is part of The ManaPlus Client. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include "utils/glxhelper.h" |
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#if defined(USE_OPENGL) && defined(USE_X11) |
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#include "logger.h" |
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#include "render/opengl/mglcheck.h" |
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#include "render/openglx/mglx.h" |
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#include "render/opengl/mgldefines.h" |
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RENDER_OPENGL_MGLDEFINES_H |
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#include "debug.h" |
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static int ErrorHandler(Display *d A_UNUSED, XErrorEvent *e A_UNUSED) |
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{ |
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return 0; |
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} |
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void *GlxHelper::createContext(const unsigned long window, |
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void *const display0, |
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const int major, |
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const int minor, |
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const int profile) |
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{ |
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Display *const display = static_cast<Display*>(display0); |
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XSync(display, false); |
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int (*handler)(Display *, XErrorEvent *) = XSetErrorHandler(ErrorHandler); |
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void *context = mglXGetCurrentContext(); |
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if (!display) |
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return context; |
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if (isGLNull(mglXGetCurrentContext) |
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|| isGLNull(mglXCreateContextAttribs) |
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|| isGLNull(mglXChooseFBConfig)) |
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{ |
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logger->log("Can't change context, functions in driver " |
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"not implemented"); |
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XSetErrorHandler(handler); |
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return context; |
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} |
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if (!context) |
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{ |
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logger->log("Can't change context, because current " |
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"context not created"); |
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XSetErrorHandler(handler); |
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return context; |
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} |
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int glxAttribs[] = |
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{ |
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GLX_RENDER_TYPE, GLX_RGBA_BIT, |
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GLX_RED_SIZE, 3, |
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GLX_GREEN_SIZE, 3, |
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GLX_BLUE_SIZE, 2, |
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GLX_DOUBLEBUFFER, 1, |
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0 |
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}; |
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int fbcount = 0; |
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GLXFBConfig *framebuffer_config = mglXChooseFBConfig(display, |
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DefaultScreen(display), |
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glxAttribs, |
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&fbcount); |
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if (!framebuffer_config || !fbcount) |
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{ |
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logger->log("No correct fb profile found"); |
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XSetErrorHandler(handler); |
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return nullptr; |
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} |
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logger->log("Found %d frame buffer contexts.", fbcount); |
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int attribs[] = |
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{ |
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GLX_CONTEXT_MAJOR_VERSION_ARB, major, |
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GLX_CONTEXT_MINOR_VERSION_ARB, minor, |
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GLX_CONTEXT_PROFILE_MASK_ARB, profile, |
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0, 0 |
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}; |
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void *const context2 = mglXCreateContextAttribs(display, |
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framebuffer_config[0], context, true, attribs); |
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if (!context2) |
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{ |
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logger->log("context %d.%d creation failed", major, minor); |
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XSetErrorHandler(handler); |
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return nullptr; |
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} |
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XSync(display, false); |
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XSetErrorHandler(handler); |
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if (!mglXMakeCurrent(display, window, context2)) |
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{ |
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mglXDestroyContext(display, context2); |
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logger->log("make current context %d.%d failed", major, minor); |
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return nullptr; |
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} |
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if (mglXGetCurrentContext() != context2) |
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{ |
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mglXDestroyContext(display, context2); |
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logger->log("context cant be changed to %d.%d.", major, minor); |
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return nullptr; |
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} |
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// do not delete SDL context, because on exit it will crash |
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// mglXDestroyContext(display, context); |
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logger->log("Context for %d.%d created", major, minor); |
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return context2; |
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} |
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bool GlxHelper::makeCurrent(const unsigned long window, |
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void *const display, |
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void *const context) |
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{ |
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if (!display) |
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return false; |
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return mglXMakeCurrent(static_cast<Display*>(display), window, context); |
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} |
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#endif // defined(USE_OPENGL) && defined(USE_X11) |