1877 lines
63 KiB
C
1877 lines
63 KiB
C
//========================================================================
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// GLFW - An OpenGL framework
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// Platform: X11/GLX
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// API version: 3.0
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// WWW: http://www.glfw.org/
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//------------------------------------------------------------------------
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// Copyright (c) 2002-2006 Marcus Geelnard
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// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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#include "internal.h"
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#include <limits.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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// Action for EWMH client messages
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#define _NET_WM_STATE_REMOVE 0
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#define _NET_WM_STATE_ADD 1
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#define _NET_WM_STATE_TOGGLE 2
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// Additional mouse button names for XButtonEvent
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#define Button6 6
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#define Button7 7
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//========================================================================
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// Error handler for BadMatch errors when requesting context with
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// unavailable OpenGL versions using the GLX_ARB_create_context extension
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//========================================================================
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static int errorHandler(Display *display, XErrorEvent* event)
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{
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return 0;
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}
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//========================================================================
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// Checks whether the event is a MapNotify for the specified window
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//========================================================================
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static Bool isMapNotify(Display* d, XEvent* e, char* arg)
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{
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return (e->type == MapNotify) && (e->xmap.window == (Window)arg);
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}
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//========================================================================
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// Retrieve a single window property of the specified type
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// Inspired by fghGetWindowProperty from freeglut
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//========================================================================
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static unsigned long getWindowProperty(Window window,
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Atom property,
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Atom type,
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unsigned char** value)
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{
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Atom actualType;
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int actualFormat;
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unsigned long itemCount, bytesAfter;
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XGetWindowProperty(_glfwLibrary.X11.display,
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window,
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property,
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0,
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LONG_MAX,
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False,
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type,
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&actualType,
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&actualFormat,
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&itemCount,
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&bytesAfter,
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value);
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if (actualType != type)
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return 0;
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return itemCount;
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}
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//========================================================================
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// Check whether the specified atom is supported
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//========================================================================
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static Atom getSupportedAtom(Atom* supportedAtoms,
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unsigned long atomCount,
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const char* atomName)
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{
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Atom atom = XInternAtom(_glfwLibrary.X11.display, atomName, True);
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if (atom != None)
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{
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unsigned long i;
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for (i = 0; i < atomCount; i++)
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{
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if (supportedAtoms[i] == atom)
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return atom;
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}
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}
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return None;
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}
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//========================================================================
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// Check whether the running window manager is EWMH-compliant
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//========================================================================
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static GLboolean checkForEWMH(_GLFWwindow* window)
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{
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Window* windowFromRoot = NULL;
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Window* windowFromChild = NULL;
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// Hey kids; let's see if the window manager supports EWMH!
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// First we need a couple of atoms, which should already be there
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Atom supportingWmCheck =
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XInternAtom(_glfwLibrary.X11.display, "_NET_SUPPORTING_WM_CHECK", True);
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Atom wmSupported =
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XInternAtom(_glfwLibrary.X11.display, "_NET_SUPPORTED", True);
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if (supportingWmCheck == None || wmSupported == None)
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return GL_FALSE;
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// Then we look for the _NET_SUPPORTING_WM_CHECK property of the root window
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if (getWindowProperty(_glfwLibrary.X11.root,
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supportingWmCheck,
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XA_WINDOW,
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(unsigned char**) &windowFromRoot) != 1)
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{
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XFree(windowFromRoot);
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return GL_FALSE;
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}
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// It should be the ID of a child window (of the root)
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// Then we look for the same property on the child window
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if (getWindowProperty(*windowFromRoot,
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supportingWmCheck,
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XA_WINDOW,
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(unsigned char**) &windowFromChild) != 1)
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{
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XFree(windowFromRoot);
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XFree(windowFromChild);
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return GL_FALSE;
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}
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// It should be the ID of that same child window
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if (*windowFromRoot != *windowFromChild)
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{
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XFree(windowFromRoot);
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XFree(windowFromChild);
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return GL_FALSE;
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}
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XFree(windowFromRoot);
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XFree(windowFromChild);
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// We are now fairly sure that an EWMH-compliant window manager is running
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Atom* supportedAtoms;
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unsigned long atomCount;
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// Now we need to check the _NET_SUPPORTED property of the root window
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// It should be a list of supported WM protocol and state atoms
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atomCount = getWindowProperty(_glfwLibrary.X11.root,
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wmSupported,
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XA_ATOM,
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(unsigned char**) &supportedAtoms);
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// See which of the atoms we support that are supported by the WM
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window->X11.wmState =
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getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE");
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window->X11.wmStateFullscreen =
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getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_FULLSCREEN");
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window->X11.wmPing =
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getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_PING");
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window->X11.wmActiveWindow =
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getSupportedAtom(supportedAtoms, atomCount, "_NET_ACTIVE_WINDOW");
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XFree(supportedAtoms);
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return GL_TRUE;
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}
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//========================================================================
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// Translates an X Window key to internal coding
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//========================================================================
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static int translateKey(int keycode)
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{
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KeySym key, key_lc, key_uc;
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// Try secondary keysym, for numeric keypad keys
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// Note: This way we always force "NumLock = ON", which at least
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// enables GLFW users to detect numeric keypad keys
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key = XKeycodeToKeysym(_glfwLibrary.X11.display, keycode, 1);
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switch (key)
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{
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// Numeric keypad
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case XK_KP_0: return GLFW_KEY_KP_0;
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case XK_KP_1: return GLFW_KEY_KP_1;
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case XK_KP_2: return GLFW_KEY_KP_2;
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case XK_KP_3: return GLFW_KEY_KP_3;
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case XK_KP_4: return GLFW_KEY_KP_4;
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case XK_KP_5: return GLFW_KEY_KP_5;
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case XK_KP_6: return GLFW_KEY_KP_6;
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case XK_KP_7: return GLFW_KEY_KP_7;
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case XK_KP_8: return GLFW_KEY_KP_8;
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case XK_KP_9: return GLFW_KEY_KP_9;
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case XK_KP_Separator:
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case XK_KP_Decimal: return GLFW_KEY_KP_DECIMAL;
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case XK_KP_Equal: return GLFW_KEY_KP_EQUAL;
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case XK_KP_Enter: return GLFW_KEY_KP_ENTER;
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default: break;
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}
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// Now try pimary keysym
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key = XKeycodeToKeysym(_glfwLibrary.X11.display, keycode, 0);
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switch (key)
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{
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// Special keys (non character keys)
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case XK_Escape: return GLFW_KEY_ESC;
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case XK_Tab: return GLFW_KEY_TAB;
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case XK_Shift_L: return GLFW_KEY_LSHIFT;
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case XK_Shift_R: return GLFW_KEY_RSHIFT;
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case XK_Control_L: return GLFW_KEY_LCTRL;
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case XK_Control_R: return GLFW_KEY_RCTRL;
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case XK_Meta_L:
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case XK_Alt_L: return GLFW_KEY_LALT;
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case XK_Mode_switch: // Mapped to Alt_R on many keyboards
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case XK_Meta_R:
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case XK_ISO_Level3_Shift: // AltGr on at least some machines
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case XK_Alt_R: return GLFW_KEY_RALT;
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case XK_Super_L: return GLFW_KEY_LSUPER;
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case XK_Super_R: return GLFW_KEY_RSUPER;
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case XK_Menu: return GLFW_KEY_MENU;
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case XK_Num_Lock: return GLFW_KEY_KP_NUM_LOCK;
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case XK_Caps_Lock: return GLFW_KEY_CAPS_LOCK;
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case XK_Scroll_Lock: return GLFW_KEY_SCROLL_LOCK;
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case XK_Pause: return GLFW_KEY_PAUSE;
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case XK_KP_Delete:
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case XK_Delete: return GLFW_KEY_DEL;
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case XK_BackSpace: return GLFW_KEY_BACKSPACE;
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case XK_Return: return GLFW_KEY_ENTER;
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case XK_KP_Home:
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case XK_Home: return GLFW_KEY_HOME;
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case XK_KP_End:
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case XK_End: return GLFW_KEY_END;
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case XK_KP_Page_Up:
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case XK_Page_Up: return GLFW_KEY_PAGEUP;
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case XK_KP_Page_Down:
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case XK_Page_Down: return GLFW_KEY_PAGEDOWN;
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case XK_KP_Insert:
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case XK_Insert: return GLFW_KEY_INSERT;
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case XK_KP_Left:
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case XK_Left: return GLFW_KEY_LEFT;
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case XK_KP_Right:
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case XK_Right: return GLFW_KEY_RIGHT;
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case XK_KP_Down:
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case XK_Down: return GLFW_KEY_DOWN;
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case XK_KP_Up:
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case XK_Up: return GLFW_KEY_UP;
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case XK_F1: return GLFW_KEY_F1;
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case XK_F2: return GLFW_KEY_F2;
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case XK_F3: return GLFW_KEY_F3;
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case XK_F4: return GLFW_KEY_F4;
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case XK_F5: return GLFW_KEY_F5;
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case XK_F6: return GLFW_KEY_F6;
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case XK_F7: return GLFW_KEY_F7;
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case XK_F8: return GLFW_KEY_F8;
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case XK_F9: return GLFW_KEY_F9;
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case XK_F10: return GLFW_KEY_F10;
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case XK_F11: return GLFW_KEY_F11;
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case XK_F12: return GLFW_KEY_F12;
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case XK_F13: return GLFW_KEY_F13;
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case XK_F14: return GLFW_KEY_F14;
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case XK_F15: return GLFW_KEY_F15;
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case XK_F16: return GLFW_KEY_F16;
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case XK_F17: return GLFW_KEY_F17;
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case XK_F18: return GLFW_KEY_F18;
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case XK_F19: return GLFW_KEY_F19;
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case XK_F20: return GLFW_KEY_F20;
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case XK_F21: return GLFW_KEY_F21;
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case XK_F22: return GLFW_KEY_F22;
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case XK_F23: return GLFW_KEY_F23;
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case XK_F24: return GLFW_KEY_F24;
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case XK_F25: return GLFW_KEY_F25;
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// Numeric keypad (should have been detected in secondary keysym!)
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case XK_KP_Divide: return GLFW_KEY_KP_DIVIDE;
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case XK_KP_Multiply: return GLFW_KEY_KP_MULTIPLY;
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case XK_KP_Subtract: return GLFW_KEY_KP_SUBTRACT;
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case XK_KP_Add: return GLFW_KEY_KP_ADD;
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case XK_KP_Equal: return GLFW_KEY_KP_EQUAL;
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case XK_KP_Enter: return GLFW_KEY_KP_ENTER;
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// The rest (should be printable keys)
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default:
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// Make uppercase
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XConvertCase(key, &key_lc, &key_uc);
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key = key_uc;
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// Valid ISO 8859-1 character?
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if ((key >= 32 && key <= 126) || (key >= 160 && key <= 255))
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return (int) key;
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return GLFW_KEY_UNKNOWN;
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}
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}
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//========================================================================
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// Translates an X Window event to Unicode
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//========================================================================
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static int translateChar(XKeyEvent* event)
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{
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KeySym keysym;
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// Get X11 keysym
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XLookupString(event, NULL, 0, &keysym, NULL);
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// Convert to Unicode (see x11_keysym2unicode.c)
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return (int) _glfwKeySym2Unicode(keysym);
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}
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//========================================================================
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// Returns the specified attribute of the specified GLXFBConfig
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// NOTE: Do not call this unless we have found GLX 1.3+ or GLX_SGIX_fbconfig
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//========================================================================
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static int getFBConfigAttrib(_GLFWwindow* window, GLXFBConfig fbconfig, int attrib)
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{
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int value;
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if (window->GLX.has_GLX_SGIX_fbconfig)
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{
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window->GLX.GetFBConfigAttribSGIX(_glfwLibrary.X11.display,
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fbconfig, attrib, &value);
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}
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else
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glXGetFBConfigAttrib(_glfwLibrary.X11.display, fbconfig, attrib, &value);
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return value;
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}
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//========================================================================
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// Return a list of available and usable framebuffer configs
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//========================================================================
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static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found)
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{
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GLXFBConfig* fbconfigs;
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_GLFWfbconfig* result;
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int i, count = 0;
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*found = 0;
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if (_glfwLibrary.X11.glxMajor == 1 && _glfwLibrary.X11.glxMinor < 3)
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{
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if (!window->GLX.has_GLX_SGIX_fbconfig)
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{
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fprintf(stderr, "GLXFBConfigs are not supported by the X server\n");
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_glfwSetError(GLFW_NO_PIXEL_FORMAT);
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return NULL;
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}
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}
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if (window->GLX.has_GLX_SGIX_fbconfig)
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{
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fbconfigs = window->GLX.ChooseFBConfigSGIX(_glfwLibrary.X11.display,
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_glfwLibrary.X11.screen,
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NULL,
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&count);
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if (!count)
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{
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fprintf(stderr, "No GLXFBConfigs returned\n");
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_glfwSetError(GLFW_NO_PIXEL_FORMAT);
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return NULL;
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}
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}
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else
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{
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fbconfigs = glXGetFBConfigs(_glfwLibrary.X11.display, _glfwLibrary.X11.screen, &count);
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if (!count)
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{
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fprintf(stderr, "No GLXFBConfigs returned\n");
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_glfwSetError(GLFW_NO_PIXEL_FORMAT);
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return NULL;
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}
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}
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result = (_GLFWfbconfig*) malloc(sizeof(_GLFWfbconfig) * count);
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if (!result)
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{
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_glfwSetError(GLFW_OUT_OF_MEMORY);
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return NULL;
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}
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for (i = 0; i < count; i++)
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{
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if (!getFBConfigAttrib(window, fbconfigs[i], GLX_DOUBLEBUFFER) ||
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!getFBConfigAttrib(window, fbconfigs[i], GLX_VISUAL_ID))
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{
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// Only consider double-buffered GLXFBConfigs with associated visuals
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continue;
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}
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if (!(getFBConfigAttrib(window, fbconfigs[i], GLX_RENDER_TYPE) & GLX_RGBA_BIT))
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{
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// Only consider RGBA GLXFBConfigs
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continue;
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}
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if (!(getFBConfigAttrib(window, fbconfigs[i], GLX_DRAWABLE_TYPE) & GLX_WINDOW_BIT))
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{
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// Only consider window GLXFBConfigs
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continue;
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}
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result[*found].redBits = getFBConfigAttrib(window, fbconfigs[i], GLX_RED_SIZE);
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result[*found].greenBits = getFBConfigAttrib(window, fbconfigs[i], GLX_GREEN_SIZE);
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result[*found].blueBits = getFBConfigAttrib(window, fbconfigs[i], GLX_BLUE_SIZE);
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result[*found].alphaBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ALPHA_SIZE);
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result[*found].depthBits = getFBConfigAttrib(window, fbconfigs[i], GLX_DEPTH_SIZE);
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result[*found].stencilBits = getFBConfigAttrib(window, fbconfigs[i], GLX_STENCIL_SIZE);
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result[*found].accumRedBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_RED_SIZE);
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result[*found].accumGreenBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_GREEN_SIZE);
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result[*found].accumBlueBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_BLUE_SIZE);
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result[*found].accumAlphaBits = getFBConfigAttrib(window, fbconfigs[i], GLX_ACCUM_ALPHA_SIZE);
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result[*found].auxBuffers = getFBConfigAttrib(window, fbconfigs[i], GLX_AUX_BUFFERS);
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result[*found].stereo = getFBConfigAttrib(window, fbconfigs[i], GLX_STEREO);
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if (window->GLX.has_GLX_ARB_multisample)
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result[*found].samples = getFBConfigAttrib(window, fbconfigs[i], GLX_SAMPLES);
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else
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result[*found].samples = 0;
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result[*found].platformID = (GLFWintptr) getFBConfigAttrib(window, fbconfigs[i], GLX_FBCONFIG_ID);
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(*found)++;
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}
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XFree(fbconfigs);
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return result;
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}
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//========================================================================
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// Create the OpenGL context
|
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//========================================================================
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|
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#define setGLXattrib(attribs, index, attribName, attribValue) \
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attribs[index++] = attribName; \
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attribs[index++] = attribValue;
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|
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static int createContext(_GLFWwindow* window, const _GLFWwndconfig* wndconfig, GLXFBConfigID fbconfigID)
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{
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int attribs[40];
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int flags, dummy, index;
|
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GLXFBConfig* fbconfig;
|
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GLXContext share = NULL;
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|
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if (wndconfig->share)
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share = wndconfig->share->GLX.context;
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|
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// Retrieve the previously selected GLXFBConfig
|
|
{
|
|
index = 0;
|
|
|
|
setGLXattrib(attribs, index, GLX_FBCONFIG_ID, (int) fbconfigID);
|
|
setGLXattrib(attribs, index, None, None);
|
|
|
|
if (window->GLX.has_GLX_SGIX_fbconfig)
|
|
{
|
|
fbconfig = window->GLX.ChooseFBConfigSGIX(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
attribs,
|
|
&dummy);
|
|
}
|
|
else
|
|
{
|
|
fbconfig = glXChooseFBConfig(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
attribs,
|
|
&dummy);
|
|
}
|
|
|
|
if (fbconfig == NULL)
|
|
{
|
|
fprintf(stderr, "Unable to retrieve the selected GLXFBConfig\n");
|
|
_glfwSetError(GLFW_INTERNAL_ERROR);
|
|
return GL_FALSE;
|
|
}
|
|
}
|
|
|
|
// Retrieve the corresponding visual
|
|
if (window->GLX.has_GLX_SGIX_fbconfig)
|
|
{
|
|
window->GLX.visual = window->GLX.GetVisualFromFBConfigSGIX(_glfwLibrary.X11.display,
|
|
*fbconfig);
|
|
}
|
|
else
|
|
{
|
|
window->GLX.visual = glXGetVisualFromFBConfig(_glfwLibrary.X11.display,
|
|
*fbconfig);
|
|
}
|
|
|
|
if (window->GLX.visual == NULL)
|
|
{
|
|
XFree(fbconfig);
|
|
|
|
fprintf(stderr, "Unable to retrieve visual for GLXFBconfig\n");
|
|
_glfwSetError(GLFW_INTERNAL_ERROR);
|
|
return GL_FALSE;
|
|
}
|
|
|
|
if (window->GLX.has_GLX_ARB_create_context)
|
|
{
|
|
index = 0;
|
|
|
|
if (wndconfig->glMajor != 1 || wndconfig->glMinor != 0)
|
|
{
|
|
// Request an explicitly versioned context
|
|
|
|
setGLXattrib(attribs, index, GLX_CONTEXT_MAJOR_VERSION_ARB, wndconfig->glMajor);
|
|
setGLXattrib(attribs, index, GLX_CONTEXT_MINOR_VERSION_ARB, wndconfig->glMinor);
|
|
}
|
|
|
|
if (wndconfig->glForward || wndconfig->glDebug)
|
|
{
|
|
flags = 0;
|
|
|
|
if (wndconfig->glForward)
|
|
flags |= GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
|
|
|
|
if (wndconfig->glDebug)
|
|
flags |= GLX_CONTEXT_DEBUG_BIT_ARB;
|
|
|
|
setGLXattrib(attribs, index, GLX_CONTEXT_FLAGS_ARB, flags);
|
|
}
|
|
|
|
if (wndconfig->glProfile)
|
|
{
|
|
if (!window->GLX.has_GLX_ARB_create_context_profile)
|
|
{
|
|
fprintf(stderr, "OpenGL profile requested but GLX_ARB_create_context_profile "
|
|
"is unavailable\n");
|
|
_glfwSetError(GLFW_UNAVAILABLE_VERSION);
|
|
return GL_FALSE;
|
|
}
|
|
|
|
if (wndconfig->glProfile == GLFW_OPENGL_CORE_PROFILE)
|
|
flags = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
|
|
else
|
|
flags = GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
|
|
|
|
setGLXattrib(attribs, index, GLX_CONTEXT_PROFILE_MASK_ARB, flags);
|
|
}
|
|
|
|
setGLXattrib(attribs, index, None, None);
|
|
|
|
// This is the only place we set an Xlib error handler, and we only do
|
|
// it because glXCreateContextAttribsARB generates a BadMatch error if
|
|
// the requested OpenGL version is unavailable (instead of a civilized
|
|
// response like returning NULL)
|
|
XSetErrorHandler(errorHandler);
|
|
|
|
window->GLX.context =
|
|
window->GLX.CreateContextAttribsARB(_glfwLibrary.X11.display,
|
|
*fbconfig,
|
|
share,
|
|
True,
|
|
attribs);
|
|
|
|
// We are done, so unset the error handler again (see above)
|
|
XSetErrorHandler(NULL);
|
|
}
|
|
else
|
|
{
|
|
if (window->GLX.has_GLX_SGIX_fbconfig)
|
|
{
|
|
window->GLX.context =
|
|
window->GLX.CreateContextWithConfigSGIX(_glfwLibrary.X11.display,
|
|
*fbconfig,
|
|
GLX_RGBA_TYPE,
|
|
share,
|
|
True);
|
|
}
|
|
else
|
|
{
|
|
window->GLX.context = glXCreateNewContext(_glfwLibrary.X11.display,
|
|
*fbconfig,
|
|
GLX_RGBA_TYPE,
|
|
share,
|
|
True);
|
|
}
|
|
}
|
|
|
|
XFree(fbconfig);
|
|
|
|
if (window->GLX.context == NULL)
|
|
{
|
|
fprintf(stderr, "Unable to create OpenGL context\n");
|
|
// TODO: Handle all the various error codes here
|
|
_glfwSetError(GLFW_INTERNAL_ERROR);
|
|
return GL_FALSE;
|
|
}
|
|
|
|
window->GLX.fbconfigID = fbconfigID;
|
|
|
|
return GL_TRUE;
|
|
}
|
|
|
|
#undef setGLXattrib
|
|
|
|
|
|
//========================================================================
|
|
// Initialize GLX-specific extensions
|
|
//========================================================================
|
|
|
|
static void initGLXExtensions(_GLFWwindow* window)
|
|
{
|
|
if (_glfwPlatformExtensionSupported("GLX_SGI_swap_control"))
|
|
{
|
|
window->GLX.SwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)
|
|
_glfwPlatformGetProcAddress("glXSwapIntervalSGI");
|
|
|
|
if (window->GLX.SwapIntervalSGI)
|
|
window->GLX.has_GLX_SGI_swap_control = GL_TRUE;
|
|
}
|
|
|
|
if (_glfwPlatformExtensionSupported("GLX_SGIX_fbconfig"))
|
|
{
|
|
window->GLX.GetFBConfigAttribSGIX = (PFNGLXGETFBCONFIGATTRIBSGIXPROC)
|
|
_glfwPlatformGetProcAddress("glXGetFBConfigAttribSGIX");
|
|
window->GLX.ChooseFBConfigSGIX = (PFNGLXCHOOSEFBCONFIGSGIXPROC)
|
|
_glfwPlatformGetProcAddress("glXChooseFBConfigSGIX");
|
|
window->GLX.CreateContextWithConfigSGIX = (PFNGLXCREATECONTEXTWITHCONFIGSGIXPROC)
|
|
_glfwPlatformGetProcAddress("glXCreateContextWithConfigSGIX");
|
|
window->GLX.GetVisualFromFBConfigSGIX = (PFNGLXGETVISUALFROMFBCONFIGSGIXPROC)
|
|
_glfwPlatformGetProcAddress("glXGetVisualFromFBConfigSGIX");
|
|
|
|
if (window->GLX.GetFBConfigAttribSGIX &&
|
|
window->GLX.ChooseFBConfigSGIX &&
|
|
window->GLX.CreateContextWithConfigSGIX &&
|
|
window->GLX.GetVisualFromFBConfigSGIX)
|
|
{
|
|
window->GLX.has_GLX_SGIX_fbconfig = GL_TRUE;
|
|
}
|
|
}
|
|
|
|
if (_glfwPlatformExtensionSupported("GLX_ARB_multisample"))
|
|
window->GLX.has_GLX_ARB_multisample = GL_TRUE;
|
|
|
|
if (_glfwPlatformExtensionSupported("GLX_ARB_create_context"))
|
|
{
|
|
window->GLX.CreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC)
|
|
_glfwPlatformGetProcAddress("glXCreateContextAttribsARB");
|
|
|
|
if (window->GLX.CreateContextAttribsARB)
|
|
window->GLX.has_GLX_ARB_create_context = GL_TRUE;
|
|
}
|
|
|
|
if (_glfwPlatformExtensionSupported("GLX_ARB_create_context_profile"))
|
|
window->GLX.has_GLX_ARB_create_context_profile = GL_TRUE;
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Create the X11 window (and its colormap)
|
|
//========================================================================
|
|
|
|
static GLboolean createWindow(_GLFWwindow* window,
|
|
const _GLFWwndconfig* wndconfig)
|
|
{
|
|
XEvent event;
|
|
unsigned long wamask;
|
|
XSetWindowAttributes wa;
|
|
|
|
// Every window needs a colormap
|
|
// Create one based on the visual used by the current context
|
|
|
|
window->X11.colormap = XCreateColormap(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.root,
|
|
window->GLX.visual->visual,
|
|
AllocNone);
|
|
|
|
// Create the actual window
|
|
{
|
|
wamask = CWBorderPixel | CWColormap | CWEventMask;
|
|
|
|
wa.colormap = window->X11.colormap;
|
|
wa.border_pixel = 0;
|
|
wa.event_mask = StructureNotifyMask | KeyPressMask | KeyReleaseMask |
|
|
PointerMotionMask | ButtonPressMask | ButtonReleaseMask |
|
|
ExposureMask | FocusChangeMask | VisibilityChangeMask;
|
|
|
|
if (wndconfig->mode == GLFW_WINDOWED)
|
|
{
|
|
// The /only/ reason we are setting the background pixel here is
|
|
// that otherwise our window wont get any decorations on systems
|
|
// using Compiz on Intel hardware
|
|
wa.background_pixel = BlackPixel(_glfwLibrary.X11.display, _glfwLibrary.X11.screen);
|
|
wamask |= CWBackPixel;
|
|
}
|
|
|
|
window->X11.handle = XCreateWindow(
|
|
_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.root,
|
|
0, 0, // Upper left corner of this window on root
|
|
window->width, window->height,
|
|
0, // Border width
|
|
window->GLX.visual->depth, // Color depth
|
|
InputOutput,
|
|
window->GLX.visual->visual,
|
|
wamask,
|
|
&wa
|
|
);
|
|
|
|
if (!window->X11.handle)
|
|
{
|
|
// TODO: Handle all the various error codes here
|
|
_glfwSetError(GLFW_INTERNAL_ERROR);
|
|
return GL_FALSE;
|
|
}
|
|
}
|
|
|
|
// Check whether an EWMH-compliant window manager is running
|
|
window->X11.hasEWMH = checkForEWMH(window);
|
|
|
|
if (window->mode == GLFW_FULLSCREEN && !window->X11.hasEWMH)
|
|
{
|
|
// This is the butcher's way of removing window decorations
|
|
// Setting the override-redirect attribute on a window makes the window
|
|
// manager ignore the window completely (ICCCM, section 4)
|
|
// The good thing is that this makes undecorated fullscreen windows
|
|
// easy to do; the bad thing is that we have to do everything manually
|
|
// and some things (like iconify/restore) won't work at all, as they're
|
|
// usually performed by the window manager
|
|
|
|
XSetWindowAttributes attributes;
|
|
attributes.override_redirect = True;
|
|
XChangeWindowAttributes(_glfwLibrary.X11.display,
|
|
window->X11.handle,
|
|
CWOverrideRedirect,
|
|
&attributes);
|
|
|
|
window->X11.overrideRedirect = GL_TRUE;
|
|
}
|
|
|
|
// Find or create the protocol atom for window close notifications
|
|
window->X11.wmDeleteWindow = XInternAtom(_glfwLibrary.X11.display,
|
|
"WM_DELETE_WINDOW",
|
|
False);
|
|
|
|
// Declare the WM protocols we support
|
|
{
|
|
int count = 0;
|
|
Atom protocols[2];
|
|
|
|
// The WM_DELETE_WINDOW ICCCM protocol
|
|
// Basic window close notification protocol
|
|
if (window->X11.wmDeleteWindow != None)
|
|
protocols[count++] = window->X11.wmDeleteWindow;
|
|
|
|
// The _NET_WM_PING EWMH protocol
|
|
// Tells the WM to ping our window and flag us as unresponsive if we
|
|
// don't reply within a few seconds
|
|
if (window->X11.wmPing != None)
|
|
protocols[count++] = window->X11.wmPing;
|
|
|
|
if (count > 0)
|
|
{
|
|
XSetWMProtocols(_glfwLibrary.X11.display, window->X11.handle,
|
|
protocols, count);
|
|
}
|
|
}
|
|
|
|
// Set ICCCM WM_HINTS property
|
|
{
|
|
XWMHints* hints = XAllocWMHints();
|
|
if (!hints)
|
|
{
|
|
_glfwSetError(GLFW_OUT_OF_MEMORY);
|
|
return GL_FALSE;
|
|
}
|
|
|
|
hints->flags = StateHint;
|
|
hints->initial_state = NormalState;
|
|
|
|
XSetWMHints(_glfwLibrary.X11.display, window->X11.handle, hints);
|
|
XFree(hints);
|
|
}
|
|
|
|
// Set ICCCM WM_NORMAL_HINTS property (even if no parts are set)
|
|
{
|
|
XSizeHints* hints = XAllocSizeHints();
|
|
if (!hints)
|
|
{
|
|
_glfwSetError(GLFW_OUT_OF_MEMORY);
|
|
return GL_FALSE;
|
|
}
|
|
|
|
hints->flags = 0;
|
|
|
|
if (wndconfig->windowNoResize)
|
|
{
|
|
hints->flags |= (PMinSize | PMaxSize);
|
|
hints->min_width = hints->max_width = window->width;
|
|
hints->min_height = hints->max_height = window->height;
|
|
}
|
|
|
|
XSetWMNormalHints(_glfwLibrary.X11.display, window->X11.handle, hints);
|
|
XFree(hints);
|
|
}
|
|
|
|
_glfwPlatformSetWindowTitle(window, wndconfig->title);
|
|
|
|
// Make sure the window is mapped before proceeding
|
|
XMapWindow(_glfwLibrary.X11.display, window->X11.handle);
|
|
XPeekIfEvent(_glfwLibrary.X11.display, &event, isMapNotify,
|
|
(char*) window->X11.handle);
|
|
|
|
return GL_TRUE;
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Enter fullscreen mode
|
|
//========================================================================
|
|
|
|
static void enterFullscreenMode(_GLFWwindow* window)
|
|
{
|
|
if (!_glfwLibrary.X11.saver.changed)
|
|
{
|
|
// Remember old screen saver settings
|
|
XGetScreenSaver(_glfwLibrary.X11.display,
|
|
&_glfwLibrary.X11.saver.timeout,
|
|
&_glfwLibrary.X11.saver.interval,
|
|
&_glfwLibrary.X11.saver.blanking,
|
|
&_glfwLibrary.X11.saver.exposure);
|
|
|
|
// Disable screen saver
|
|
XSetScreenSaver(_glfwLibrary.X11.display, 0, 0, DontPreferBlanking,
|
|
DefaultExposures);
|
|
|
|
_glfwLibrary.X11.saver.changed = GL_TRUE;
|
|
}
|
|
|
|
_glfwSetVideoMode(_glfwLibrary.X11.screen,
|
|
&window->width, &window->height,
|
|
&window->refreshRate);
|
|
|
|
if (window->X11.hasEWMH &&
|
|
window->X11.wmState != None &&
|
|
window->X11.wmStateFullscreen != None)
|
|
{
|
|
if (window->X11.wmActiveWindow != None)
|
|
{
|
|
// Ask the window manager to raise and focus the GLFW window
|
|
// Only focused windows with the _NET_WM_STATE_FULLSCREEN state end
|
|
// up on top of all other windows ("Stacking order" in EWMH spec)
|
|
|
|
XEvent event;
|
|
memset(&event, 0, sizeof(event));
|
|
|
|
event.type = ClientMessage;
|
|
event.xclient.window = window->X11.handle;
|
|
event.xclient.format = 32; // Data is 32-bit longs
|
|
event.xclient.message_type = window->X11.wmActiveWindow;
|
|
event.xclient.data.l[0] = 1; // Sender is a normal application
|
|
event.xclient.data.l[1] = 0; // We don't really know the timestamp
|
|
|
|
XSendEvent(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.root,
|
|
False,
|
|
SubstructureNotifyMask | SubstructureRedirectMask,
|
|
&event);
|
|
}
|
|
|
|
// Ask the window manager to make the GLFW window a fullscreen window
|
|
// Fullscreen windows are undecorated and, when focused, are kept
|
|
// on top of all other windows
|
|
|
|
XEvent event;
|
|
memset(&event, 0, sizeof(event));
|
|
|
|
event.type = ClientMessage;
|
|
event.xclient.window = window->X11.handle;
|
|
event.xclient.format = 32; // Data is 32-bit longs
|
|
event.xclient.message_type = window->X11.wmState;
|
|
event.xclient.data.l[0] = _NET_WM_STATE_ADD;
|
|
event.xclient.data.l[1] = window->X11.wmStateFullscreen;
|
|
event.xclient.data.l[2] = 0; // No secondary property
|
|
event.xclient.data.l[3] = 1; // Sender is a normal application
|
|
|
|
XSendEvent(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.root,
|
|
False,
|
|
SubstructureNotifyMask | SubstructureRedirectMask,
|
|
&event);
|
|
}
|
|
else if (window->X11.overrideRedirect)
|
|
{
|
|
// In override-redirect mode, we have divorced ourselves from the
|
|
// window manager, so we need to do everything manually
|
|
|
|
XRaiseWindow(_glfwLibrary.X11.display, window->X11.handle);
|
|
XSetInputFocus(_glfwLibrary.X11.display, window->X11.handle,
|
|
RevertToParent, CurrentTime);
|
|
XMoveWindow(_glfwLibrary.X11.display, window->X11.handle, 0, 0);
|
|
XResizeWindow(_glfwLibrary.X11.display, window->X11.handle,
|
|
window->width, window->height);
|
|
}
|
|
|
|
if (_glfwLibrary.cursorLockWindow == window)
|
|
_glfwPlatformHideMouseCursor(window);
|
|
|
|
// HACK: Try to get window inside viewport (for virtual displays) by moving
|
|
// the mouse cursor to the upper left corner (and then to the center)
|
|
// This hack should be harmless on saner systems as well
|
|
XWarpPointer(_glfwLibrary.X11.display, None, window->X11.handle, 0,0,0,0, 0,0);
|
|
XWarpPointer(_glfwLibrary.X11.display, None, window->X11.handle, 0,0,0,0,
|
|
window->width / 2, window->height / 2);
|
|
}
|
|
|
|
//========================================================================
|
|
// Leave fullscreen mode
|
|
//========================================================================
|
|
|
|
static void leaveFullscreenMode(_GLFWwindow* window)
|
|
{
|
|
_glfwRestoreVideoMode(_glfwLibrary.X11.screen);
|
|
|
|
// Did we change the screen saver setting?
|
|
if (_glfwLibrary.X11.saver.changed)
|
|
{
|
|
// Restore old screen saver settings
|
|
XSetScreenSaver(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.saver.timeout,
|
|
_glfwLibrary.X11.saver.interval,
|
|
_glfwLibrary.X11.saver.blanking,
|
|
_glfwLibrary.X11.saver.exposure);
|
|
|
|
_glfwLibrary.X11.saver.changed = GL_FALSE;
|
|
}
|
|
|
|
if (window->X11.hasEWMH &&
|
|
window->X11.wmState != None &&
|
|
window->X11.wmStateFullscreen != None)
|
|
{
|
|
// Ask the window manager to make the GLFW window a normal window
|
|
// Normal windows usually have frames and other decorations
|
|
|
|
XEvent event;
|
|
memset(&event, 0, sizeof(event));
|
|
|
|
event.type = ClientMessage;
|
|
event.xclient.window = window->X11.handle;
|
|
event.xclient.format = 32; // Data is 32-bit longs
|
|
event.xclient.message_type = window->X11.wmState;
|
|
event.xclient.data.l[0] = _NET_WM_STATE_REMOVE;
|
|
event.xclient.data.l[1] = window->X11.wmStateFullscreen;
|
|
event.xclient.data.l[2] = 0; // No secondary property
|
|
event.xclient.data.l[3] = 1; // Sender is a normal application
|
|
|
|
XSendEvent(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.root,
|
|
False,
|
|
SubstructureNotifyMask | SubstructureRedirectMask,
|
|
&event);
|
|
}
|
|
|
|
if (_glfwLibrary.cursorLockWindow == window)
|
|
_glfwPlatformShowMouseCursor(window);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Return the GLFW window corresponding to the specified X11 window
|
|
//========================================================================
|
|
static _GLFWwindow* findWindow(Window handle)
|
|
{
|
|
_GLFWwindow* window;
|
|
|
|
for (window = _glfwLibrary.windowListHead; window; window = window->next)
|
|
{
|
|
if (window->X11.handle == handle)
|
|
return window;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Get and process next X event (called by _glfwPlatformPollEvents)
|
|
//========================================================================
|
|
|
|
static void processSingleEvent(void)
|
|
{
|
|
_GLFWwindow* window;
|
|
|
|
XEvent event;
|
|
XNextEvent(_glfwLibrary.X11.display, &event);
|
|
|
|
switch (event.type)
|
|
{
|
|
case KeyPress:
|
|
{
|
|
// A keyboard key was pressed
|
|
window = findWindow(event.xkey.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for KeyPress event\n");
|
|
return;
|
|
}
|
|
|
|
// Translate and report key press
|
|
_glfwInputKey(window, translateKey(event.xkey.keycode), GLFW_PRESS);
|
|
|
|
// Translate and report character input
|
|
_glfwInputChar(window, translateChar(&event.xkey));
|
|
|
|
break;
|
|
}
|
|
|
|
case KeyRelease:
|
|
{
|
|
// A keyboard key was released
|
|
window = findWindow(event.xkey.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for KeyRelease event\n");
|
|
return;
|
|
}
|
|
|
|
// Do not report key releases for key repeats. For key repeats we
|
|
// will get KeyRelease/KeyPress pairs with similar or identical
|
|
// time stamps. User selected key repeat filtering is handled in
|
|
// _glfwInputKey()/_glfwInputChar().
|
|
if (XEventsQueued(_glfwLibrary.X11.display, QueuedAfterReading))
|
|
{
|
|
XEvent nextEvent;
|
|
XPeekEvent(_glfwLibrary.X11.display, &nextEvent);
|
|
|
|
if (nextEvent.type == KeyPress &&
|
|
nextEvent.xkey.window == event.xkey.window &&
|
|
nextEvent.xkey.keycode == event.xkey.keycode)
|
|
{
|
|
// This last check is a hack to work around key repeats
|
|
// leaking through due to some sort of time drift
|
|
// Toshiyuki Takahashi can press a button 16 times per
|
|
// second so it's fairly safe to assume that no human is
|
|
// pressing the key 50 times per second (value is ms)
|
|
if ((nextEvent.xkey.time - event.xkey.time) < 20)
|
|
{
|
|
// Do not report anything for this event
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Translate and report key release
|
|
_glfwInputKey(window, translateKey(event.xkey.keycode), GLFW_RELEASE);
|
|
|
|
break;
|
|
}
|
|
|
|
case ButtonPress:
|
|
{
|
|
// A mouse button was pressed or a scrolling event occurred
|
|
window = findWindow(event.xbutton.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for ButtonPress event\n");
|
|
return;
|
|
}
|
|
|
|
if (event.xbutton.button == Button1)
|
|
_glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_LEFT, GLFW_PRESS);
|
|
else if (event.xbutton.button == Button2)
|
|
_glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_MIDDLE, GLFW_PRESS);
|
|
else if (event.xbutton.button == Button3)
|
|
_glfwInputMouseClick(window, GLFW_MOUSE_BUTTON_RIGHT, GLFW_PRESS);
|
|
|
|
// XFree86 3.3.2 and later translates mouse wheel up/down into
|
|
// mouse button 4 & 5 presses
|
|
else if (event.xbutton.button == Button4)
|
|
_glfwInputScroll(window, 0, 1);
|
|
else if (event.xbutton.button == Button5)
|
|
_glfwInputScroll(window, 0, -1);
|
|
|
|
else if (event.xbutton.button == Button6)
|
|
_glfwInputScroll(window, -1, 0);
|
|
else if (event.xbutton.button == Button7)
|
|
_glfwInputScroll(window, 1, 0);
|
|
|
|
break;
|
|
}
|
|
|
|
case ButtonRelease:
|
|
{
|
|
// A mouse button was released
|
|
window = findWindow(event.xbutton.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for ButtonRelease event\n");
|
|
return;
|
|
}
|
|
|
|
if (event.xbutton.button == Button1)
|
|
{
|
|
_glfwInputMouseClick(window,
|
|
GLFW_MOUSE_BUTTON_LEFT,
|
|
GLFW_RELEASE);
|
|
}
|
|
else if (event.xbutton.button == Button2)
|
|
{
|
|
_glfwInputMouseClick(window,
|
|
GLFW_MOUSE_BUTTON_MIDDLE,
|
|
GLFW_RELEASE);
|
|
}
|
|
else if (event.xbutton.button == Button3)
|
|
{
|
|
_glfwInputMouseClick(window,
|
|
GLFW_MOUSE_BUTTON_RIGHT,
|
|
GLFW_RELEASE);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case MotionNotify:
|
|
{
|
|
// The mouse cursor was moved
|
|
window = findWindow(event.xmotion.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for MotionNotify event\n");
|
|
return;
|
|
}
|
|
|
|
if (event.xmotion.x != window->X11.cursorPosX ||
|
|
event.xmotion.y != window->X11.cursorPosY)
|
|
{
|
|
// The mouse cursor was moved and we didn't do it
|
|
|
|
if (_glfwLibrary.cursorLockWindow == window)
|
|
{
|
|
if (window->X11.pointerHidden)
|
|
{
|
|
window->mousePosX += event.xmotion.x -
|
|
window->X11.cursorPosX;
|
|
window->mousePosY += event.xmotion.y -
|
|
window->X11.cursorPosY;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
window->mousePosX = event.xmotion.x;
|
|
window->mousePosY = event.xmotion.y;
|
|
}
|
|
|
|
window->X11.cursorPosX = event.xmotion.x;
|
|
window->X11.cursorPosY = event.xmotion.y;
|
|
window->X11.mouseMoved = GL_TRUE;
|
|
|
|
if (window->mousePosCallback)
|
|
{
|
|
window->mousePosCallback(window,
|
|
window->mousePosX,
|
|
window->mousePosY);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
case ConfigureNotify:
|
|
{
|
|
// The window configuration changed somehow
|
|
window = findWindow(event.xconfigure.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for ConfigureNotify event\n");
|
|
return;
|
|
}
|
|
|
|
if (event.xconfigure.width != window->width ||
|
|
event.xconfigure.height != window->height)
|
|
{
|
|
// The window was resized
|
|
|
|
window->width = event.xconfigure.width;
|
|
window->height = event.xconfigure.height;
|
|
if (window->windowSizeCallback)
|
|
{
|
|
window->windowSizeCallback(window,
|
|
window->width,
|
|
window->height);
|
|
}
|
|
}
|
|
|
|
if (event.xconfigure.x != window->positionX ||
|
|
event.xconfigure.y != window->positionY)
|
|
{
|
|
window->positionX = event.xconfigure.x;
|
|
window->positionY = event.xconfigure.y;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case ClientMessage:
|
|
{
|
|
// Custom client message, probably from the window manager
|
|
window = findWindow(event.xclient.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for ClientMessage event\n");
|
|
return;
|
|
}
|
|
|
|
if ((Atom) event.xclient.data.l[ 0 ] == window->X11.wmDeleteWindow)
|
|
{
|
|
// The window manager was asked to close the window, for example by
|
|
// the user pressing a 'close' window decoration button
|
|
|
|
window->closeRequested = GL_TRUE;
|
|
}
|
|
else if (window->X11.wmPing != None &&
|
|
(Atom) event.xclient.data.l[ 0 ] == window->X11.wmPing)
|
|
{
|
|
// The window manager is pinging us to make sure we are still
|
|
// responding to events
|
|
|
|
event.xclient.window = _glfwLibrary.X11.root;
|
|
XSendEvent(_glfwLibrary.X11.display,
|
|
event.xclient.window,
|
|
False,
|
|
SubstructureNotifyMask | SubstructureRedirectMask,
|
|
&event);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case MapNotify:
|
|
{
|
|
// The window was mapped
|
|
window = findWindow(event.xmap.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for MapNotify event\n");
|
|
return;
|
|
}
|
|
|
|
window->iconified = GL_FALSE;
|
|
|
|
if (window->windowIconifyCallback)
|
|
window->windowIconifyCallback(window, window->iconified);
|
|
|
|
break;
|
|
}
|
|
|
|
case UnmapNotify:
|
|
{
|
|
// The window was unmapped
|
|
window = findWindow(event.xmap.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for UnmapNotify event\n");
|
|
return;
|
|
}
|
|
|
|
window->iconified = GL_TRUE;
|
|
|
|
if (window->windowIconifyCallback)
|
|
window->windowIconifyCallback(window, window->iconified);
|
|
|
|
break;
|
|
}
|
|
|
|
case FocusIn:
|
|
{
|
|
// The window gained focus
|
|
window = findWindow(event.xfocus.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for FocusIn event\n");
|
|
return;
|
|
}
|
|
|
|
_glfwInputWindowFocus(window, GL_TRUE);
|
|
|
|
if (_glfwLibrary.cursorLockWindow == window)
|
|
_glfwPlatformHideMouseCursor(window);
|
|
|
|
break;
|
|
}
|
|
|
|
case FocusOut:
|
|
{
|
|
// The window lost focus
|
|
window = findWindow(event.xfocus.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for FocusOut event\n");
|
|
return;
|
|
}
|
|
|
|
_glfwInputWindowFocus(window, GL_FALSE);
|
|
|
|
if (_glfwLibrary.cursorLockWindow == window)
|
|
_glfwPlatformShowMouseCursor(window);
|
|
|
|
break;
|
|
}
|
|
|
|
case Expose:
|
|
{
|
|
// The window's contents was damaged
|
|
window = findWindow(event.xexpose.window);
|
|
if (window == NULL)
|
|
{
|
|
fprintf(stderr, "Cannot find GLFW window structure for Expose event\n");
|
|
return;
|
|
}
|
|
|
|
if (window->windowRefreshCallback)
|
|
window->windowRefreshCallback(window);
|
|
|
|
break;
|
|
}
|
|
|
|
// Was the window destroyed?
|
|
case DestroyNotify:
|
|
return;
|
|
|
|
default:
|
|
{
|
|
#if defined(_GLFW_HAS_XRANDR)
|
|
switch (event.type - _glfwLibrary.X11.XRandR.eventBase)
|
|
{
|
|
case RRScreenChangeNotify:
|
|
{
|
|
// Show XRandR that we really care
|
|
XRRUpdateConfiguration(&event);
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW platform API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
//========================================================================
|
|
// Here is where the window is created, and
|
|
// the OpenGL rendering context is created
|
|
//========================================================================
|
|
|
|
int _glfwPlatformOpenWindow(_GLFWwindow* window,
|
|
const _GLFWwndconfig* wndconfig,
|
|
const _GLFWfbconfig* fbconfig)
|
|
{
|
|
_GLFWfbconfig closest;
|
|
|
|
window->refreshRate = wndconfig->refreshRate;
|
|
window->windowNoResize = wndconfig->windowNoResize;
|
|
|
|
initGLXExtensions(window);
|
|
|
|
// Choose the best available fbconfig
|
|
{
|
|
unsigned int fbcount;
|
|
_GLFWfbconfig* fbconfigs;
|
|
const _GLFWfbconfig* result;
|
|
|
|
fbconfigs = getFBConfigs(window, &fbcount);
|
|
if (!fbconfigs)
|
|
return GL_FALSE;
|
|
|
|
result = _glfwChooseFBConfig(fbconfig, fbconfigs, fbcount);
|
|
if (!result)
|
|
{
|
|
free(fbconfigs);
|
|
return GL_FALSE;
|
|
}
|
|
|
|
closest = *result;
|
|
free(fbconfigs);
|
|
}
|
|
|
|
if (!createContext(window, wndconfig, (GLXFBConfigID) closest.platformID))
|
|
return GL_FALSE;
|
|
|
|
if (!createWindow(window, wndconfig))
|
|
return GL_FALSE;
|
|
|
|
if (wndconfig->mode == GLFW_FULLSCREEN)
|
|
{
|
|
#if defined(_GLFW_HAS_XRANDR)
|
|
// Request screen change notifications
|
|
if (_glfwLibrary.X11.XRandR.available)
|
|
{
|
|
XRRSelectInput(_glfwLibrary.X11.display,
|
|
window->X11.handle,
|
|
RRScreenChangeNotifyMask);
|
|
}
|
|
#endif
|
|
enterFullscreenMode(window);
|
|
}
|
|
|
|
// Process the window map event and any other that may have arrived
|
|
_glfwPlatformPollEvents();
|
|
|
|
// Retrieve and set initial cursor position
|
|
{
|
|
Window cursorWindow, cursorRoot;
|
|
int windowX, windowY, rootX, rootY;
|
|
unsigned int mask;
|
|
|
|
XQueryPointer(_glfwLibrary.X11.display,
|
|
window->X11.handle,
|
|
&cursorRoot,
|
|
&cursorWindow,
|
|
&rootX, &rootY,
|
|
&windowX, &windowY,
|
|
&mask);
|
|
|
|
// TODO: Probably check for some corner cases here.
|
|
|
|
window->mousePosX = windowX;
|
|
window->mousePosY = windowY;
|
|
}
|
|
|
|
return GL_TRUE;
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Make the OpenGL context associated with the specified window current
|
|
//========================================================================
|
|
|
|
void _glfwPlatformMakeWindowCurrent(_GLFWwindow* window)
|
|
{
|
|
if (window)
|
|
{
|
|
glXMakeCurrent(_glfwLibrary.X11.display,
|
|
window->X11.handle,
|
|
window->GLX.context);
|
|
}
|
|
else
|
|
glXMakeCurrent(_glfwLibrary.X11.display, None, NULL);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Properly kill the window/video display
|
|
//========================================================================
|
|
|
|
void _glfwPlatformCloseWindow(_GLFWwindow* window)
|
|
{
|
|
if (window->mode == GLFW_FULLSCREEN)
|
|
leaveFullscreenMode(window);
|
|
|
|
if (window->GLX.context)
|
|
{
|
|
// Release and destroy the context
|
|
glXMakeCurrent(_glfwLibrary.X11.display, None, NULL);
|
|
glXDestroyContext(_glfwLibrary.X11.display, window->GLX.context);
|
|
window->GLX.context = NULL;
|
|
}
|
|
|
|
if (window->GLX.visual)
|
|
{
|
|
XFree(window->GLX.visual);
|
|
window->GLX.visual = NULL;
|
|
}
|
|
|
|
if (window->X11.handle)
|
|
{
|
|
XUnmapWindow(_glfwLibrary.X11.display, window->X11.handle);
|
|
XDestroyWindow(_glfwLibrary.X11.display, window->X11.handle);
|
|
window->X11.handle = (Window) 0;
|
|
}
|
|
|
|
if (window->X11.colormap)
|
|
{
|
|
XFreeColormap(_glfwLibrary.X11.display, window->X11.colormap);
|
|
window->X11.colormap = (Colormap) 0;
|
|
}
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Set the window title
|
|
//========================================================================
|
|
|
|
void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
|
|
{
|
|
// Set window & icon title
|
|
XStoreName(_glfwLibrary.X11.display, window->X11.handle, title);
|
|
XSetIconName(_glfwLibrary.X11.display, window->X11.handle, title);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Set the window size
|
|
//========================================================================
|
|
|
|
void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
|
|
{
|
|
int mode = 0, rate, sizeChanged = GL_FALSE;
|
|
XSizeHints* sizehints;
|
|
|
|
rate = window->refreshRate;
|
|
|
|
if (window->mode == GLFW_FULLSCREEN)
|
|
{
|
|
// Get the closest matching video mode for the specified window size
|
|
mode = _glfwGetClosestVideoMode(_glfwLibrary.X11.screen, &width, &height, &rate);
|
|
}
|
|
|
|
if (window->windowNoResize)
|
|
{
|
|
// Update window size restrictions to match new window size
|
|
|
|
sizehints = XAllocSizeHints();
|
|
sizehints->flags = 0;
|
|
|
|
sizehints->min_width = sizehints->max_width = width;
|
|
sizehints->min_height = sizehints->max_height = height;
|
|
|
|
XSetWMNormalHints(_glfwLibrary.X11.display, window->X11.handle, sizehints);
|
|
XFree(sizehints);
|
|
}
|
|
|
|
// Change window size before changing fullscreen mode?
|
|
if (window->mode == GLFW_FULLSCREEN && (width > window->width))
|
|
{
|
|
XResizeWindow(_glfwLibrary.X11.display, window->X11.handle, width, height);
|
|
sizeChanged = GL_TRUE;
|
|
}
|
|
|
|
if (window->mode == GLFW_FULLSCREEN)
|
|
{
|
|
// Change video mode, keeping current refresh rate
|
|
_glfwSetVideoModeMODE(_glfwLibrary.X11.screen, mode, window->refreshRate);
|
|
}
|
|
|
|
// Set window size (if not already changed)
|
|
if (!sizeChanged)
|
|
XResizeWindow(_glfwLibrary.X11.display, window->X11.handle, width, height);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Set the window position.
|
|
//========================================================================
|
|
|
|
void _glfwPlatformSetWindowPos(_GLFWwindow* window, int x, int y)
|
|
{
|
|
XMoveWindow(_glfwLibrary.X11.display, window->X11.handle, x, y);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Window iconification
|
|
//========================================================================
|
|
|
|
void _glfwPlatformIconifyWindow(_GLFWwindow* window)
|
|
{
|
|
if (window->X11.overrideRedirect)
|
|
{
|
|
// We can't iconify/restore override-redirect windows, as that's
|
|
// performed by the window manager
|
|
return;
|
|
}
|
|
|
|
XIconifyWindow(_glfwLibrary.X11.display, window->X11.handle, _glfwLibrary.X11.screen);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Window un-iconification
|
|
//========================================================================
|
|
|
|
void _glfwPlatformRestoreWindow(_GLFWwindow* window)
|
|
{
|
|
if (window->X11.overrideRedirect)
|
|
{
|
|
// We can't iconify/restore override-redirect windows, as that's
|
|
// performed by the window manager
|
|
return;
|
|
}
|
|
|
|
XMapWindow(_glfwLibrary.X11.display, window->X11.handle);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Swap OpenGL buffers
|
|
//========================================================================
|
|
|
|
void _glfwPlatformSwapBuffers(void)
|
|
{
|
|
glXSwapBuffers(_glfwLibrary.X11.display,
|
|
_glfwLibrary.currentWindow->X11.handle);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Set double buffering swap interval
|
|
//========================================================================
|
|
|
|
void _glfwPlatformSwapInterval(int interval)
|
|
{
|
|
_GLFWwindow* window = _glfwLibrary.currentWindow;
|
|
|
|
if (window->GLX.has_GLX_SGI_swap_control)
|
|
window->GLX.SwapIntervalSGI(interval);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Read back framebuffer parameters from the context
|
|
//========================================================================
|
|
|
|
void _glfwPlatformRefreshWindowParams(void)
|
|
{
|
|
int dummy;
|
|
GLXFBConfig* fbconfig;
|
|
#if defined(_GLFW_HAS_XRANDR)
|
|
XRRScreenConfiguration* sc;
|
|
#elif defined(_GLFW_HAS_XF86VIDMODE)
|
|
XF86VidModeModeLine modeline;
|
|
int dotclock;
|
|
float pixels_per_second, pixels_per_frame;
|
|
#endif
|
|
_GLFWwindow* window = _glfwLibrary.currentWindow;
|
|
|
|
int attribs[] = { GLX_FBCONFIG_ID, window->GLX.fbconfigID, None };
|
|
|
|
if (window->GLX.has_GLX_SGIX_fbconfig)
|
|
{
|
|
fbconfig = window->GLX.ChooseFBConfigSGIX(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
attribs,
|
|
&dummy);
|
|
}
|
|
else
|
|
{
|
|
fbconfig = glXChooseFBConfig(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
attribs,
|
|
&dummy);
|
|
}
|
|
|
|
if (fbconfig == NULL)
|
|
{
|
|
// This should never ever happen
|
|
// TODO: Flag this as an error and propagate up
|
|
fprintf(stderr, "Cannot find known GLXFBConfig by ID. "
|
|
"This cannot happen. Have a nice day.\n");
|
|
abort();
|
|
}
|
|
|
|
// There is no clear definition of an "accelerated" context on X11/GLX, and
|
|
// true sounds better than false, so we hardcode true here
|
|
window->accelerated = GL_TRUE;
|
|
|
|
window->redBits = getFBConfigAttrib(window, *fbconfig, GLX_RED_SIZE);
|
|
window->greenBits = getFBConfigAttrib(window, *fbconfig, GLX_GREEN_SIZE);
|
|
window->blueBits = getFBConfigAttrib(window, *fbconfig, GLX_BLUE_SIZE);
|
|
|
|
window->alphaBits = getFBConfigAttrib(window, *fbconfig, GLX_ALPHA_SIZE);
|
|
window->depthBits = getFBConfigAttrib(window, *fbconfig, GLX_DEPTH_SIZE);
|
|
window->stencilBits = getFBConfigAttrib(window, *fbconfig, GLX_STENCIL_SIZE);
|
|
|
|
window->accumRedBits = getFBConfigAttrib(window, *fbconfig, GLX_ACCUM_RED_SIZE);
|
|
window->accumGreenBits = getFBConfigAttrib(window, *fbconfig, GLX_ACCUM_GREEN_SIZE);
|
|
window->accumBlueBits = getFBConfigAttrib(window, *fbconfig, GLX_ACCUM_BLUE_SIZE);
|
|
window->accumAlphaBits = getFBConfigAttrib(window, *fbconfig, GLX_ACCUM_ALPHA_SIZE);
|
|
|
|
window->auxBuffers = getFBConfigAttrib(window, *fbconfig, GLX_AUX_BUFFERS);
|
|
window->stereo = getFBConfigAttrib(window, *fbconfig, GLX_STEREO) ? GL_TRUE : GL_FALSE;
|
|
|
|
// Get FSAA buffer sample count
|
|
if (window->GLX.has_GLX_ARB_multisample)
|
|
window->samples = getFBConfigAttrib(window, *fbconfig, GLX_SAMPLES);
|
|
else
|
|
window->samples = 0;
|
|
|
|
// Default to refresh rate unknown (=0 according to GLFW spec)
|
|
window->refreshRate = 0;
|
|
|
|
// Retrieve refresh rate if possible
|
|
#if defined(_GLFW_HAS_XRANDR)
|
|
if (_glfwLibrary.X11.XRandR.available)
|
|
{
|
|
sc = XRRGetScreenInfo(_glfwLibrary.X11.display, _glfwLibrary.X11.root);
|
|
window->refreshRate = XRRConfigCurrentRate(sc);
|
|
XRRFreeScreenConfigInfo(sc);
|
|
}
|
|
#elif defined(_GLFW_HAS_XF86VIDMODE)
|
|
if (_glfwLibrary.X11.XF86VidMode.available)
|
|
{
|
|
// Use the XF86VidMode extension to get current video mode
|
|
XF86VidModeGetModeLine(_glfwLibrary.X11.display, _glfwLibrary.X11.screen,
|
|
&dotclock, &modeline);
|
|
pixels_per_second = 1000.0f * (float) dotclock;
|
|
pixels_per_frame = (float) modeline.htotal * modeline.vtotal;
|
|
window->refreshRate = (int)(pixels_per_second/pixels_per_frame+0.5);
|
|
}
|
|
#endif
|
|
|
|
XFree(fbconfig);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Poll for new window and input events
|
|
//========================================================================
|
|
|
|
void _glfwPlatformPollEvents(void)
|
|
{
|
|
_GLFWwindow* window;
|
|
|
|
for (window = _glfwLibrary.windowListHead; window; window = window->next)
|
|
{
|
|
window->scrollX = 0;
|
|
window->scrollY = 0;
|
|
}
|
|
|
|
// Flag that the cursor has not moved
|
|
window = _glfwLibrary.cursorLockWindow;
|
|
if (window)
|
|
window->X11.mouseMoved = GL_FALSE;
|
|
|
|
// Process all pending events
|
|
while (XPending(_glfwLibrary.X11.display))
|
|
processSingleEvent();
|
|
|
|
// Did we get mouse movement in fully enabled hidden cursor mode?
|
|
window = _glfwLibrary.cursorLockWindow;
|
|
if (window)
|
|
{
|
|
if (window->X11.mouseMoved && window->X11.pointerHidden)
|
|
{
|
|
_glfwPlatformSetMouseCursorPos(window,
|
|
window->width / 2,
|
|
window->height / 2);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Wait for new window and input events
|
|
//========================================================================
|
|
|
|
void _glfwPlatformWaitEvents(void)
|
|
{
|
|
XEvent event;
|
|
|
|
// Block waiting for an event to arrive
|
|
XNextEvent(_glfwLibrary.X11.display, &event);
|
|
XPutBackEvent(_glfwLibrary.X11.display, &event);
|
|
|
|
_glfwPlatformPollEvents();
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Hide mouse cursor (lock it)
|
|
//========================================================================
|
|
|
|
void _glfwPlatformHideMouseCursor(_GLFWwindow* window)
|
|
{
|
|
// Hide cursor
|
|
if (!window->X11.pointerHidden)
|
|
{
|
|
XDefineCursor(_glfwLibrary.X11.display, window->X11.handle, _glfwLibrary.X11.cursor);
|
|
window->X11.pointerHidden = GL_TRUE;
|
|
}
|
|
|
|
// Grab cursor to user window
|
|
if (!window->X11.pointerGrabbed)
|
|
{
|
|
if (XGrabPointer(_glfwLibrary.X11.display, window->X11.handle, True,
|
|
ButtonPressMask | ButtonReleaseMask |
|
|
PointerMotionMask, GrabModeAsync, GrabModeAsync,
|
|
window->X11.handle, None, CurrentTime) ==
|
|
GrabSuccess)
|
|
{
|
|
window->X11.pointerGrabbed = GL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Show mouse cursor (unlock it)
|
|
//========================================================================
|
|
|
|
void _glfwPlatformShowMouseCursor(_GLFWwindow* window)
|
|
{
|
|
// Un-grab cursor (only in windowed mode: in fullscreen mode we still
|
|
// want the mouse grabbed in order to confine the cursor to the window
|
|
// area)
|
|
if (window->X11.pointerGrabbed)
|
|
{
|
|
XUngrabPointer(_glfwLibrary.X11.display, CurrentTime);
|
|
window->X11.pointerGrabbed = GL_FALSE;
|
|
}
|
|
|
|
// Show cursor
|
|
if (window->X11.pointerHidden)
|
|
{
|
|
XUndefineCursor(_glfwLibrary.X11.display, window->X11.handle);
|
|
window->X11.pointerHidden = GL_FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Set physical mouse cursor position
|
|
//========================================================================
|
|
|
|
void _glfwPlatformSetMouseCursorPos(_GLFWwindow* window, int x, int y)
|
|
{
|
|
// Store the new position so we can recognise it later
|
|
window->X11.cursorPosX = x;
|
|
window->X11.cursorPosY = y;
|
|
|
|
XWarpPointer(_glfwLibrary.X11.display, None, window->X11.handle, 0,0,0,0, x, y);
|
|
}
|
|
|