c42b51ed96
Comment from Zr says this crashes but looks like this was because there was no check if the function failed to allocate to begin with.
272 lines
7.0 KiB
C++
272 lines
7.0 KiB
C++
/*
|
|
* ***** BEGIN GPL LICENSE BLOCK *****
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
|
|
* All rights reserved.
|
|
*
|
|
* The Original Code is: all of this file.
|
|
*
|
|
* Video mode switching
|
|
* Copyright (C) 1997-2001 Id Software, Inc.
|
|
* Ported from Quake 2 by Alex Fraser <alex@phatcore.com>
|
|
*
|
|
* ***** END GPL LICENSE BLOCK *****
|
|
*/
|
|
|
|
/** \file ghost/intern/GHOST_DisplayManagerX11.cpp
|
|
* \ingroup GHOST
|
|
*/
|
|
|
|
#ifdef WITH_X11_XF86VMODE
|
|
# include <X11/Xlib.h>
|
|
# include <X11/extensions/xf86vmode.h>
|
|
#endif
|
|
|
|
#include "GHOST_DisplayManagerX11.h"
|
|
#include "GHOST_SystemX11.h"
|
|
|
|
|
|
GHOST_DisplayManagerX11::
|
|
GHOST_DisplayManagerX11(
|
|
GHOST_SystemX11 *system
|
|
) :
|
|
GHOST_DisplayManager(),
|
|
m_system(system)
|
|
{
|
|
/* nothing to do. */
|
|
}
|
|
|
|
GHOST_TSuccess
|
|
GHOST_DisplayManagerX11::
|
|
getNumDisplays(GHOST_TUns8& numDisplays) const
|
|
{
|
|
numDisplays = m_system->getNumDisplays();
|
|
return GHOST_kSuccess;
|
|
}
|
|
|
|
|
|
GHOST_TSuccess
|
|
GHOST_DisplayManagerX11::
|
|
getNumDisplaySettings(
|
|
GHOST_TUns8 display,
|
|
GHOST_TInt32& numSettings) const
|
|
{
|
|
#ifdef WITH_X11_XF86VMODE
|
|
int majorVersion, minorVersion;
|
|
XF86VidModeModeInfo **vidmodes;
|
|
Display *dpy = m_system->getXDisplay();
|
|
|
|
GHOST_ASSERT(display < 1, "Only single display systems are currently supported.\n");
|
|
|
|
if (dpy == NULL)
|
|
return GHOST_kFailure;
|
|
|
|
majorVersion = minorVersion = 0;
|
|
if (!XF86VidModeQueryVersion(dpy, &majorVersion, &minorVersion)) {
|
|
fprintf(stderr, "Error: XF86VidMode extension missing!\n");
|
|
return GHOST_kFailure;
|
|
}
|
|
|
|
if (XF86VidModeGetAllModeLines(dpy, DefaultScreen(dpy), &numSettings, &vidmodes)) {
|
|
XFree(vidmodes);
|
|
}
|
|
|
|
#else
|
|
/* We only have one X11 setting at the moment. */
|
|
GHOST_ASSERT(display < 1, "Only single display systems are currently supported.\n");
|
|
numSettings = 1;
|
|
#endif
|
|
|
|
return GHOST_kSuccess;
|
|
}
|
|
|
|
/* from SDL2 */
|
|
#ifdef WITH_X11_XF86VMODE
|
|
static int
|
|
calculate_rate(XF86VidModeModeInfo *info)
|
|
{
|
|
return (info->htotal
|
|
&& info->vtotal) ? (1000 * info->dotclock / (info->htotal *
|
|
info->vtotal)) : 0;
|
|
}
|
|
#endif
|
|
|
|
GHOST_TSuccess
|
|
GHOST_DisplayManagerX11::
|
|
getDisplaySetting(
|
|
GHOST_TUns8 display,
|
|
GHOST_TInt32 index,
|
|
GHOST_DisplaySetting& setting) const
|
|
{
|
|
Display *dpy = m_system->getXDisplay();
|
|
|
|
if (dpy == NULL)
|
|
return GHOST_kFailure;
|
|
|
|
#ifdef WITH_X11_XF86VMODE
|
|
int majorVersion, minorVersion;
|
|
|
|
GHOST_ASSERT(display < 1, "Only single display systems are currently supported.\n");
|
|
|
|
majorVersion = minorVersion = 0;
|
|
if (XF86VidModeQueryVersion(dpy, &majorVersion, &minorVersion)) {
|
|
XF86VidModeModeInfo **vidmodes;
|
|
int numSettings;
|
|
|
|
if (XF86VidModeGetAllModeLines(dpy, DefaultScreen(dpy), &numSettings, &vidmodes)) {
|
|
GHOST_ASSERT(index < numSettings, "Requested setting outside of valid range.\n");
|
|
|
|
setting.xPixels = vidmodes[index]->hdisplay;
|
|
setting.yPixels = vidmodes[index]->vdisplay;
|
|
setting.bpp = DefaultDepth(dpy, DefaultScreen(dpy));
|
|
setting.frequency = calculate_rate(vidmodes[index]);
|
|
XFree(vidmodes);
|
|
|
|
return GHOST_kSuccess;
|
|
}
|
|
}
|
|
else {
|
|
fprintf(stderr, "Warning: XF86VidMode extension missing!\n");
|
|
/* fallback to non xf86vmode below */
|
|
}
|
|
#endif /* WITH_X11_XF86VMODE */
|
|
|
|
GHOST_ASSERT(display < 1, "Only single display systems are currently supported.\n");
|
|
GHOST_ASSERT(index < 1, "Requested setting outside of valid range.\n");
|
|
|
|
setting.xPixels = DisplayWidth(dpy, DefaultScreen(dpy));
|
|
setting.yPixels = DisplayHeight(dpy, DefaultScreen(dpy));
|
|
setting.bpp = DefaultDepth(dpy, DefaultScreen(dpy));
|
|
setting.frequency = 60.0f;
|
|
|
|
return GHOST_kSuccess;
|
|
}
|
|
|
|
GHOST_TSuccess
|
|
GHOST_DisplayManagerX11::
|
|
getCurrentDisplaySetting(
|
|
GHOST_TUns8 display,
|
|
GHOST_DisplaySetting& setting) const
|
|
{
|
|
/* According to the xf86vidmodegetallmodelines man page,
|
|
* "The first element of the array corresponds to the current video mode."
|
|
*/
|
|
return getDisplaySetting(display, 0, setting);
|
|
}
|
|
|
|
|
|
GHOST_TSuccess
|
|
GHOST_DisplayManagerX11::
|
|
setCurrentDisplaySetting(
|
|
GHOST_TUns8 display,
|
|
const GHOST_DisplaySetting& setting)
|
|
{
|
|
#ifdef WITH_X11_XF86VMODE
|
|
/* Mode switching code ported from SDL:
|
|
* See: src/video/x11/SDL_x11modes.c:set_best_resolution
|
|
*/
|
|
int majorVersion, minorVersion;
|
|
XF86VidModeModeInfo **vidmodes;
|
|
Display *dpy = m_system->getXDisplay();
|
|
int scrnum, num_vidmodes;
|
|
|
|
if (dpy == NULL)
|
|
return GHOST_kFailure;
|
|
|
|
scrnum = DefaultScreen(dpy);
|
|
|
|
/* Get video mode list */
|
|
majorVersion = minorVersion = 0;
|
|
if (!XF86VidModeQueryVersion(dpy, &majorVersion, &minorVersion)) {
|
|
fprintf(stderr, "Error: XF86VidMode extension missing!\n");
|
|
return GHOST_kFailure;
|
|
}
|
|
# ifdef _DEBUG
|
|
printf("Using XFree86-VidModeExtension Version %d.%d\n",
|
|
majorVersion, minorVersion);
|
|
# endif
|
|
|
|
if (XF86VidModeGetAllModeLines(dpy, scrnum, &num_vidmodes, &vidmodes)) {
|
|
int best_fit = -1;
|
|
|
|
for (int i = 0; i < num_vidmodes; i++) {
|
|
if (vidmodes[i]->hdisplay < setting.xPixels ||
|
|
vidmodes[i]->vdisplay < setting.yPixels)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (best_fit == -1 ||
|
|
(vidmodes[i]->hdisplay < vidmodes[best_fit]->hdisplay) ||
|
|
(vidmodes[i]->hdisplay == vidmodes[best_fit]->hdisplay &&
|
|
vidmodes[i]->vdisplay < vidmodes[best_fit]->vdisplay))
|
|
{
|
|
best_fit = i;
|
|
continue;
|
|
}
|
|
|
|
if ((vidmodes[i]->hdisplay == vidmodes[best_fit]->hdisplay) &&
|
|
(vidmodes[i]->vdisplay == vidmodes[best_fit]->vdisplay))
|
|
{
|
|
if (!setting.frequency) {
|
|
/* Higher is better, right? */
|
|
if (calculate_rate(vidmodes[i]) >
|
|
calculate_rate(vidmodes[best_fit]))
|
|
{
|
|
best_fit = i;
|
|
}
|
|
}
|
|
else {
|
|
if (abs(calculate_rate(vidmodes[i]) - (int)setting.frequency) <
|
|
abs(calculate_rate(vidmodes[best_fit]) - (int)setting.frequency))
|
|
{
|
|
best_fit = i;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (best_fit != -1) {
|
|
# ifdef _DEBUG
|
|
printf("Switching to video mode %dx%d %dx%d %d\n",
|
|
vidmodes[best_fit]->hdisplay, vidmodes[best_fit]->vdisplay,
|
|
vidmodes[best_fit]->htotal, vidmodes[best_fit]->vtotal,
|
|
calculate_rate(vidmodes[best_fit]));
|
|
# endif
|
|
|
|
/* change to the mode */
|
|
XF86VidModeSwitchToMode(dpy, scrnum, vidmodes[best_fit]);
|
|
|
|
/* Move the viewport to top left */
|
|
XF86VidModeSetViewPort(dpy, scrnum, 0, 0);
|
|
}
|
|
|
|
XFree(vidmodes);
|
|
}
|
|
else {
|
|
return GHOST_kFailure;
|
|
}
|
|
|
|
XFlush(dpy);
|
|
return GHOST_kSuccess;
|
|
|
|
#else
|
|
/* Just pretend the request was successful. */
|
|
return GHOST_kSuccess;
|
|
#endif
|
|
}
|