9af2382e14
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1717 7f0cb862-5218-0410-a997-914c9d46530a
303 lines
8.9 KiB
C
303 lines
8.9 KiB
C
/*
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* fg_init_x11.c
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*
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* Various freeglut initialization functions.
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*
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* Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
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* Written by Pawel W. Olszta, <olszta@sourceforge.net>
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* Copied for Platform code by Evan Felix <karcaw at gmail.com>
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* Creation date: Thur Feb 2 2012
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#define FREEGLUT_BUILDING_LIB
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#include <limits.h> /* LONG_MAX */
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#include <GL/freeglut.h>
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#include "fg_internal.h"
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#include "fg_init.h"
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#include "egl/fg_init_egl.h"
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/* Return the atom associated with "name". */
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static Atom fghGetAtom(const char * name)
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{
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return XInternAtom(fgDisplay.pDisplay.Display, name, False);
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}
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/*
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* Check if "property" is set on "window". The property's values are returned
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* through "data". If the property is set and is of type "type", return the
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* number of elements in "data". Return zero otherwise. In both cases, use
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* "Xfree()" to free "data".
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*/
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static int fghGetWindowProperty(Window window,
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Atom property,
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Atom type,
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unsigned char ** data)
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{
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/*
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* Caller always has to use "Xfree()" to free "data", since
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* "XGetWindowProperty() always allocates one extra byte in prop_return
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* [i.e. "data"] (even if the property is zero length) [..]".
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*/
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int status; /* Returned by "XGetWindowProperty". */
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Atom type_returned;
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int temp_format; /* Not used. */
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unsigned long number_of_elements;
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unsigned long temp_bytes_after; /* Not used. */
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status = XGetWindowProperty(fgDisplay.pDisplay.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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&type_returned,
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&temp_format,
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&number_of_elements,
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&temp_bytes_after,
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data);
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FREEGLUT_INTERNAL_ERROR_EXIT(status == Success,
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"XGetWindowProperty failled",
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"fghGetWindowProperty");
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if (type_returned != type)
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{
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number_of_elements = 0;
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}
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return number_of_elements;
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}
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/* Check if the window manager is NET WM compliant. */
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static int fghNetWMSupported(void)
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{
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Atom wm_check;
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Window ** window_ptr_1;
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int number_of_windows;
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int net_wm_supported;
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net_wm_supported = 0;
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wm_check = fghGetAtom("_NET_SUPPORTING_WM_CHECK");
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window_ptr_1 = malloc(sizeof(Window *));
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/*
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* Check that the window manager has set this property on the root window.
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* The property must be the ID of a child window.
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*/
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number_of_windows = fghGetWindowProperty(fgDisplay.pDisplay.RootWindow,
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wm_check,
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XA_WINDOW,
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(unsigned char **) window_ptr_1);
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if (number_of_windows == 1)
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{
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Window ** window_ptr_2;
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window_ptr_2 = malloc(sizeof(Window *));
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/* Check that the window has the same property set to the same value. */
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number_of_windows = fghGetWindowProperty(**window_ptr_1,
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wm_check,
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XA_WINDOW,
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(unsigned char **) window_ptr_2);
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if ((number_of_windows == 1) && (**window_ptr_1 == **window_ptr_2))
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{
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/* NET WM compliant */
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net_wm_supported = 1;
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}
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XFree(*window_ptr_2);
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free(window_ptr_2);
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}
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XFree(*window_ptr_1);
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free(window_ptr_1);
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return net_wm_supported;
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}
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/* Check if "hint" is present in "property" for "window". */
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int fgHintPresent(Window window, Atom property, Atom hint)
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{
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Atom *atoms;
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int number_of_atoms;
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int supported;
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int i;
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supported = 0;
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number_of_atoms = fghGetWindowProperty(window,
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property,
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XA_ATOM,
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(unsigned char **) &atoms);
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for (i = 0; i < number_of_atoms; i++)
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{
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if (atoms[i] == hint)
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{
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supported = 1;
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break;
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}
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}
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XFree(atoms);
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return supported;
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}
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/*
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* A call to this function should initialize all the display stuff...
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*/
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void fgPlatformInitialize( const char* displayName )
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{
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fgDisplay.pDisplay.Display = XOpenDisplay( displayName );
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if( fgDisplay.pDisplay.Display == NULL )
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fgError( "failed to open display '%s'", XDisplayName( displayName ) );
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if ( fgState.XSyncSwitch )
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XSynchronize(fgDisplay.pDisplay.Display, True);
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#ifdef EGL_VERSION_1_0
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fghPlatformInitializeEGL();
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#else
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if( !glXQueryExtension( fgDisplay.pDisplay.Display, NULL, NULL ) )
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fgError( "OpenGL GLX extension not supported by display '%s'",
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XDisplayName( displayName ) );
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/* This forces AMD Catalyst drivers to initialize and register a shutdown
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* function, which must be done before our own call to atexit to prevent
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* a crash if glutMainLoop is not called or is not exited cleanly.
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* (see bug #206)
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*/
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glXQueryExtensionsString( fgDisplay.pDisplay.Display,
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DefaultScreen( fgDisplay.pDisplay.Display ));
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#endif
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fgDisplay.pDisplay.Screen = DefaultScreen( fgDisplay.pDisplay.Display );
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fgDisplay.pDisplay.RootWindow = RootWindow(
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fgDisplay.pDisplay.Display,
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fgDisplay.pDisplay.Screen
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);
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fgDisplay.ScreenWidth = DisplayWidth(
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fgDisplay.pDisplay.Display,
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fgDisplay.pDisplay.Screen
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);
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fgDisplay.ScreenHeight = DisplayHeight(
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fgDisplay.pDisplay.Display,
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fgDisplay.pDisplay.Screen
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);
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fgDisplay.ScreenWidthMM = DisplayWidthMM(
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fgDisplay.pDisplay.Display,
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fgDisplay.pDisplay.Screen
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);
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fgDisplay.ScreenHeightMM = DisplayHeightMM(
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fgDisplay.pDisplay.Display,
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fgDisplay.pDisplay.Screen
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);
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fgDisplay.pDisplay.Connection = ConnectionNumber( fgDisplay.pDisplay.Display );
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/* Create the window deletion atom */
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fgDisplay.pDisplay.DeleteWindow = fghGetAtom("WM_DELETE_WINDOW");
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/* Create the state and full screen atoms */
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fgDisplay.pDisplay.State = None;
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fgDisplay.pDisplay.StateFullScreen = None;
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fgDisplay.pDisplay.NetWMPid = None;
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fgDisplay.pDisplay.ClientMachine = None;
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fgDisplay.pDisplay.NetWMSupported = fghNetWMSupported();
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if (fgDisplay.pDisplay.NetWMSupported)
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{
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const Atom supported = fghGetAtom("_NET_SUPPORTED");
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const Atom state = fghGetAtom("_NET_WM_STATE");
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/* Check if the state hint is supported. */
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if (fgHintPresent(fgDisplay.pDisplay.RootWindow, supported, state))
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{
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const Atom full_screen = fghGetAtom("_NET_WM_STATE_FULLSCREEN");
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fgDisplay.pDisplay.State = state;
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/* Check if the window manager supports full screen. */
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/** Check "_NET_WM_ALLOWED_ACTIONS" on our window instead? **/
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if (fgHintPresent(fgDisplay.pDisplay.RootWindow, supported, full_screen))
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{
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fgDisplay.pDisplay.StateFullScreen = full_screen;
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}
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}
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fgDisplay.pDisplay.NetWMPid = fghGetAtom("_NET_WM_PID");
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fgDisplay.pDisplay.ClientMachine = fghGetAtom("WM_CLIENT_MACHINE");
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}
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/* Get start time */
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fgState.Time = fgSystemTime();
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fgState.Initialised = GL_TRUE;
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atexit(fgDeinitialize);
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/* InputDevice uses GlutTimerFunc(), so fgState.Initialised must be TRUE */
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fgInitialiseInputDevices();
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}
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void fgPlatformDeinitialiseInputDevices ( void )
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{
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fghCloseInputDevices ();
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fgState.JoysticksInitialised = GL_FALSE;
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fgState.InputDevsInitialised = GL_FALSE;
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}
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void fgPlatformCloseDisplay ( void )
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{
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/*
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* Make sure all X-client data we have created will be destroyed on
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* display closing
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*/
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XSetCloseDownMode( fgDisplay.pDisplay.Display, DestroyAll );
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/*
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* Close the display connection, destroying all windows we have
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* created so far
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*/
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XCloseDisplay( fgDisplay.pDisplay.Display );
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}
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#ifndef EGL_VERSION_1_0
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void fgPlatformDestroyContext ( SFG_PlatformDisplay pDisplay, SFG_WindowContextType MContext )
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{
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/* Note that the MVisualInfo is not owned by the MenuContext! */
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glXDestroyContext( pDisplay.Display, MContext );
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}
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#endif
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