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398 lines
12 KiB
C
398 lines
12 KiB
C
/*
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* DirectDraw XVidMode interface
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*
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* Copyright 2001 TransGaming Technologies, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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#include "x11drv.h"
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#ifdef HAVE_LIBXXF86VM
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#include <X11/extensions/xf86vmode.h>
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#endif /* HAVE_LIBXXF86VM */
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#include "xvidmode.h"
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#include "windef.h"
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#include "wingdi.h"
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#include "ddrawi.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(xvidmode);
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#ifdef HAVE_LIBXXF86VM
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extern int usexvidmode;
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static int xf86vm_event, xf86vm_error, xf86vm_major, xf86vm_minor;
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#ifdef X_XF86VidModeSetGammaRamp
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static int xf86vm_gammaramp_size;
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static BOOL xf86vm_use_gammaramp;
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#endif /* X_XF86VidModeSetGammaRamp */
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static LPDDHALMODEINFO dd_modes;
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static unsigned int dd_mode_count;
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static XF86VidModeModeInfo** real_xf86vm_modes;
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static unsigned int real_xf86vm_mode_count;
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static void convert_modeinfo( const XF86VidModeModeInfo *mode)
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{
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int rate;
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if (mode->htotal!=0 && mode->vtotal!=0)
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rate = mode->dotclock * 1000 / (mode->htotal * mode->vtotal);
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else
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rate = 0;
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X11DRV_Settings_AddOneMode(mode->hdisplay, mode->vdisplay, 0, rate);
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}
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static void convert_modeline(int dotclock, const XF86VidModeModeLine *mode, LPDDHALMODEINFO info, unsigned int bpp)
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{
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info->dwWidth = mode->hdisplay;
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info->dwHeight = mode->vdisplay;
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if (mode->htotal!=0 && mode->vtotal!=0)
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info->wRefreshRate = dotclock * 1000 / (mode->htotal * mode->vtotal);
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else
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info->wRefreshRate = 0;
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TRACE(" width=%d, height=%d, refresh=%d\n",
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info->dwWidth, info->dwHeight, info->wRefreshRate);
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info->lPitch = 0;
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info->dwBPP = bpp;
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info->wFlags = 0;
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info->dwRBitMask = 0;
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info->dwGBitMask = 0;
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info->dwBBitMask = 0;
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info->dwAlphaBitMask = 0;
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}
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static int XVidModeErrorHandler(Display *dpy, XErrorEvent *event, void *arg)
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{
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return 1;
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}
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static int X11DRV_XF86VM_GetCurrentMode(void)
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{
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XF86VidModeModeLine line;
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int dotclock;
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unsigned int i;
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DDHALMODEINFO cmode;
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DWORD dwBpp = screen_bpp;
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TRACE("Querying XVidMode current mode\n");
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wine_tsx11_lock();
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XF86VidModeGetModeLine(gdi_display, DefaultScreen(gdi_display), &dotclock, &line);
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wine_tsx11_unlock();
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convert_modeline(dotclock, &line, &cmode, dwBpp);
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for (i=0; i<dd_mode_count; i++)
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if (memcmp(&dd_modes[i], &cmode, sizeof(cmode)) == 0) {
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TRACE("mode=%d\n", i);
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return i;
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}
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ERR("In unknown mode, returning default\n");
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return 0;
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}
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static LONG X11DRV_XF86VM_SetCurrentMode(int mode)
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{
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DWORD dwBpp = screen_bpp;
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/* only set modes from the original color depth */
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if (dwBpp != dd_modes[mode].dwBPP)
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{
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FIXME("Cannot change screen BPP from %d to %d\n", dwBpp, dd_modes[mode].dwBPP);
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}
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mode = mode % real_xf86vm_mode_count;
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wine_tsx11_lock();
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TRACE("Resizing X display to %dx%d\n",
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real_xf86vm_modes[mode]->hdisplay, real_xf86vm_modes[mode]->vdisplay);
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XF86VidModeSwitchToMode(gdi_display, DefaultScreen(gdi_display), real_xf86vm_modes[mode]);
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#if 0 /* it is said that SetViewPort causes problems with some X servers */
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XF86VidModeSetViewPort(gdi_display, DefaultScreen(gdi_display), 0, 0);
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#else
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XWarpPointer(gdi_display, None, DefaultRootWindow(gdi_display), 0, 0, 0, 0, 0, 0);
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#endif
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XSync(gdi_display, False);
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wine_tsx11_unlock();
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X11DRV_resize_desktop( real_xf86vm_modes[mode]->hdisplay, real_xf86vm_modes[mode]->vdisplay );
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return DISP_CHANGE_SUCCESSFUL;
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}
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void X11DRV_XF86VM_Init(void)
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{
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Bool ok;
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int nmodes;
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unsigned int i;
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if (xf86vm_major) return; /* already initialized? */
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/* see if XVidMode is available */
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wine_tsx11_lock();
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ok = XF86VidModeQueryExtension(gdi_display, &xf86vm_event, &xf86vm_error);
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if (ok)
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{
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X11DRV_expect_error(gdi_display, XVidModeErrorHandler, NULL);
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ok = XF86VidModeQueryVersion(gdi_display, &xf86vm_major, &xf86vm_minor);
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if (X11DRV_check_error()) ok = FALSE;
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}
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if (ok)
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{
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#ifdef X_XF86VidModeSetGammaRamp
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if (xf86vm_major > 2 || (xf86vm_major == 2 && xf86vm_minor >= 1))
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{
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XF86VidModeGetGammaRampSize(gdi_display, DefaultScreen(gdi_display),
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&xf86vm_gammaramp_size);
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if (xf86vm_gammaramp_size == 256)
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xf86vm_use_gammaramp = TRUE;
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}
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#endif /* X_XF86VidModeSetGammaRamp */
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/* retrieve modes */
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if (usexvidmode && root_window == DefaultRootWindow( gdi_display ))
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ok = XF86VidModeGetAllModeLines(gdi_display, DefaultScreen(gdi_display), &nmodes, &real_xf86vm_modes);
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else
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ok = FALSE; /* In desktop mode, do not switch resolution... But still use the Gamma ramp stuff */
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}
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wine_tsx11_unlock();
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if (!ok) return;
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TRACE("XVidMode modes: count=%d\n", nmodes);
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real_xf86vm_mode_count = nmodes;
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dd_modes = X11DRV_Settings_SetHandlers("XF86VidMode",
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X11DRV_XF86VM_GetCurrentMode,
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X11DRV_XF86VM_SetCurrentMode,
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nmodes, 1);
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/* convert modes to DDHALMODEINFO format */
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for (i=0; i<real_xf86vm_mode_count; i++)
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{
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convert_modeinfo(real_xf86vm_modes[i]);
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}
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/* add modes for different color depths */
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X11DRV_Settings_AddDepthModes();
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dd_mode_count = X11DRV_Settings_GetModeCount();
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TRACE("Available DD modes: count=%d\n", dd_mode_count);
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TRACE("Enabling XVidMode\n");
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}
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void X11DRV_XF86VM_Cleanup(void)
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{
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wine_tsx11_lock();
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if (real_xf86vm_modes) XFree(real_xf86vm_modes);
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wine_tsx11_unlock();
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}
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void X11DRV_XF86VM_SetExclusiveMode(int lock)
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{
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if (!dd_modes) return; /* no XVidMode */
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wine_tsx11_lock();
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XF86VidModeLockModeSwitch(gdi_display, DefaultScreen(gdi_display), lock);
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wine_tsx11_unlock();
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}
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/***** GAMMA CONTROL *****/
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/* (only available in XF86VidMode 2.x) */
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#ifdef X_XF86VidModeSetGamma
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static void GenerateRampFromGamma(WORD ramp[256], float gamma)
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{
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float r_gamma = 1/gamma;
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unsigned i;
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TRACE("gamma is %f\n", r_gamma);
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for (i=0; i<256; i++)
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ramp[i] = pow(i/255.0, r_gamma) * 65535.0;
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}
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static BOOL ComputeGammaFromRamp(WORD ramp[256], float *gamma)
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{
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float r_x, r_y, r_lx, r_ly, r_d, r_v, r_e, g_avg, g_min, g_max;
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unsigned i, f, l, g_n, c;
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f = ramp[0];
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l = ramp[255];
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if (f >= l) {
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ERR("inverted or flat gamma ramp (%d->%d), rejected\n", f, l);
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return FALSE;
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}
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r_d = l - f;
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g_min = g_max = g_avg = 0.0;
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/* check gamma ramp entries to estimate the gamma */
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TRACE("analyzing gamma ramp (%d->%d)\n", f, l);
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for (i=1, g_n=0; i<255; i++) {
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if (ramp[i] < f || ramp[i] > l) {
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ERR("strange gamma ramp ([%d]=%d for %d->%d), rejected\n", i, ramp[i], f, l);
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return FALSE;
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}
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c = ramp[i] - f;
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if (!c) continue; /* avoid log(0) */
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/* normalize entry values into 0..1 range */
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r_x = i/255.0; r_y = c / r_d;
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/* compute logarithms of values */
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r_lx = log(r_x); r_ly = log(r_y);
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/* compute gamma for this entry */
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r_v = r_ly / r_lx;
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/* compute differential (error estimate) for this entry */
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/* some games use table-based logarithms that magnifies the error by 128 */
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r_e = -r_lx * 128 / (c * r_lx * r_lx);
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/* compute min & max while compensating for estimated error */
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if (!g_n || g_min > (r_v + r_e)) g_min = r_v + r_e;
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if (!g_n || g_max < (r_v - r_e)) g_max = r_v - r_e;
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/* add to average */
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g_avg += r_v;
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g_n++;
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/* TRACE("[%d]=%d, gamma=%f, error=%f\n", i, ramp[i], r_v, r_e); */
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}
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if (!g_n) {
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ERR("no gamma data, shouldn't happen\n");
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return FALSE;
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}
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g_avg /= g_n;
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TRACE("low bias is %d, high is %d, gamma is %5.3f\n", f, 65535-l, g_avg);
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/* the bias could be because the app wanted something like a "red shift"
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* like when you're hit in Quake, but XVidMode doesn't support it,
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* so we have to reject a significant bias */
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if (f && f > (pow(1/255.0, g_avg) * 65536.0)) {
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ERR("low-biased gamma ramp (%d), rejected\n", f);
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return FALSE;
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}
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/* check that the gamma is reasonably uniform across the ramp */
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if (g_max - g_min > 0.1) {
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ERR("ramp not uniform (max=%f, min=%f, avg=%f), rejected\n", g_max, g_min, g_avg);
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return FALSE;
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}
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/* ok, now we're pretty sure we can set the desired gamma ramp,
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* so go for it */
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*gamma = 1/g_avg;
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return TRUE;
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}
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#endif /* X_XF86VidModeSetGamma */
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/* Hmm... should gamma control be available in desktop mode or not?
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* I'll assume that it should */
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BOOL X11DRV_XF86VM_GetGammaRamp(LPDDGAMMARAMP ramp)
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{
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#ifdef X_XF86VidModeSetGamma
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XF86VidModeGamma gamma;
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Bool ret;
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if (xf86vm_major < 2) return FALSE; /* no gamma control */
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#ifdef X_XF86VidModeSetGammaRamp
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else if (xf86vm_use_gammaramp)
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{
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Bool ret;
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wine_tsx11_lock();
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ret = XF86VidModeGetGammaRamp(gdi_display, DefaultScreen(gdi_display), 256,
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ramp->red, ramp->green, ramp->blue);
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wine_tsx11_unlock();
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return ret;
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}
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#endif
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else
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{
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wine_tsx11_lock();
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ret = XF86VidModeGetGamma(gdi_display, DefaultScreen(gdi_display), &gamma);
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wine_tsx11_unlock();
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if (ret) {
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GenerateRampFromGamma(ramp->red, gamma.red);
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GenerateRampFromGamma(ramp->green, gamma.green);
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GenerateRampFromGamma(ramp->blue, gamma.blue);
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return TRUE;
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}
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}
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#endif /* X_XF86VidModeSetGamma */
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return FALSE;
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}
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BOOL X11DRV_XF86VM_SetGammaRamp(LPDDGAMMARAMP ramp)
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{
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#ifdef X_XF86VidModeSetGamma
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XF86VidModeGamma gamma;
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if (xf86vm_major < 2) return FALSE; /* no gamma control */
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#ifdef X_XF86VidModeSetGammaRamp
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else if (xf86vm_use_gammaramp)
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{
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Bool ret;
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wine_tsx11_lock();
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ret = XF86VidModeSetGammaRamp(gdi_display, DefaultScreen(gdi_display), 256,
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ramp->red, ramp->green, ramp->blue);
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wine_tsx11_unlock();
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return ret;
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}
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#endif
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else
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{
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if (ComputeGammaFromRamp(ramp->red, &gamma.red) &&
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ComputeGammaFromRamp(ramp->green, &gamma.green) &&
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ComputeGammaFromRamp(ramp->blue, &gamma.blue)) {
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Bool ret;
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wine_tsx11_lock();
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ret = XF86VidModeSetGamma(gdi_display, DefaultScreen(gdi_display), &gamma);
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wine_tsx11_unlock();
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return ret;
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}
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}
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#endif /* X_XF86VidModeSetGamma */
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return FALSE;
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}
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#endif /* HAVE_LIBXXF86VM */
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/***********************************************************************
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* GetDeviceGammaRamp (X11DRV.@)
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*
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* FIXME: should move to somewhere appropriate, but probably not before
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* the stuff in graphics/x11drv/ has been moved to dlls/x11drv, so that
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* they can include xvidmode.h directly
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*/
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BOOL X11DRV_GetDeviceGammaRamp(X11DRV_PDEVICE *physDev, LPVOID ramp)
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{
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#ifdef HAVE_LIBXXF86VM
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return X11DRV_XF86VM_GetGammaRamp(ramp);
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#else
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return FALSE;
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#endif
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}
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/***********************************************************************
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* SetDeviceGammaRamp (X11DRV.@)
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*
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* FIXME: should move to somewhere appropriate, but probably not before
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* the stuff in graphics/x11drv/ has been moved to dlls/x11drv, so that
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* they can include xvidmode.h directly
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*/
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BOOL X11DRV_SetDeviceGammaRamp(X11DRV_PDEVICE *physDev, LPVOID ramp)
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{
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#ifdef HAVE_LIBXXF86VM
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return X11DRV_XF86VM_SetGammaRamp(ramp);
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#else
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return FALSE;
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#endif
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}
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