2 * DirectDraw XVidMode interface
4 * Copyright 2001 TransGaming Technologies, Inc.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #ifdef HAVE_LIBXXF86VM
30 #include <X11/extensions/xf86vmode.h>
31 #endif /* HAVE_LIBXXF86VM */
40 #include "wine/debug.h"
42 WINE_DEFAULT_DEBUG_CHANNEL(x11drv);
44 #ifdef HAVE_LIBXXF86VM
46 extern int usexvidmode;
48 static int xf86vm_event, xf86vm_error, xf86vm_major, xf86vm_minor;
50 #ifdef X_XF86VidModeSetGammaRamp
51 static int xf86vm_gammaramp_size;
52 static BOOL xf86vm_use_gammaramp;
55 static LPDDHALMODEINFO xf86vm_modes;
56 static unsigned xf86vm_mode_count;
57 static XF86VidModeModeInfo** modes;
58 static unsigned int xf86vm_initial_mode;
60 static void convert_modeinfo( const XF86VidModeModeInfo *mode, LPDDHALMODEINFO info )
62 info->dwWidth = mode->hdisplay;
63 info->dwHeight = mode->vdisplay;
64 if (mode->htotal!=0 && mode->vtotal!=0)
65 info->wRefreshRate = mode->dotclock * 1000 / (mode->htotal * mode->vtotal);
67 info->wRefreshRate = 0;
68 TRACE(" width=%ld, height=%ld, refresh=%d\n",
69 info->dwWidth, info->dwHeight, info->wRefreshRate);
70 /* XVidMode cannot change display depths... */
71 /* let's not bother with filling out these then... */
78 info->dwAlphaBitMask = 0;
81 static void convert_modeline(int dotclock, const XF86VidModeModeLine *mode, LPDDHALMODEINFO info)
83 info->dwWidth = mode->hdisplay;
84 info->dwHeight = mode->vdisplay;
85 if (mode->htotal!=0 && mode->vtotal!=0)
86 info->wRefreshRate = dotclock * 1000 / (mode->htotal * mode->vtotal);
88 info->wRefreshRate = 0;
89 TRACE(" width=%ld, height=%ld, refresh=%d\n",
90 info->dwWidth, info->dwHeight, info->wRefreshRate);
91 /* XVidMode cannot change display depths... */
92 /* let's not bother with filling out these then... */
99 info->dwAlphaBitMask = 0;
102 static int XVidModeErrorHandler(Display *dpy, XErrorEvent *event, void *arg)
107 void X11DRV_XF86VM_Init(void)
112 if (xf86vm_major) return; /* already initialized? */
114 /* if in desktop mode, don't use XVidMode */
115 if (root_window != DefaultRootWindow(gdi_display)) return;
117 if (!usexvidmode) return;
119 /* see if XVidMode is available */
121 ok = XF86VidModeQueryExtension(gdi_display, &xf86vm_event, &xf86vm_error);
124 X11DRV_expect_error(gdi_display, XVidModeErrorHandler, NULL);
125 ok = XF86VidModeQueryVersion(gdi_display, &xf86vm_major, &xf86vm_minor);
126 if (X11DRV_check_error()) ok = FALSE;
130 #ifdef X_XF86VidModeSetGammaRamp
131 if (xf86vm_major > 2 || (xf86vm_major == 2 && xf86vm_minor >= 1))
133 XF86VidModeGetGammaRampSize(gdi_display, DefaultScreen(gdi_display),
134 &xf86vm_gammaramp_size);
135 if (xf86vm_gammaramp_size == 256)
136 xf86vm_use_gammaramp = TRUE;
141 ok = XF86VidModeGetAllModeLines(gdi_display, DefaultScreen(gdi_display), &nmodes, &modes);
146 TRACE("XVidMode modes: count=%d\n", nmodes);
148 xf86vm_mode_count = nmodes;
149 xf86vm_modes = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DDHALMODEINFO) * nmodes);
151 /* convert modes to DDHALMODEINFO format */
152 for (i=0; i<nmodes; i++)
153 convert_modeinfo(modes[i], &xf86vm_modes[i]);
155 /* store the current mode at the time we started */
156 xf86vm_initial_mode = X11DRV_XF86VM_GetCurrentMode();
158 TRACE("Enabling XVidMode\n");
161 void X11DRV_XF86VM_Cleanup(void)
163 if (modes) TSXFree(modes);
166 int X11DRV_XF86VM_GetCurrentMode(void)
168 XF86VidModeModeLine line;
172 if (!xf86vm_modes) return 0; /* no XVidMode */
174 TRACE("Querying XVidMode current mode\n");
176 XF86VidModeGetModeLine(gdi_display, DefaultScreen(gdi_display), &dotclock, &line);
178 convert_modeline(dotclock, &line, &cmode);
179 for (i=0; i<xf86vm_mode_count; i++)
180 if (memcmp(&xf86vm_modes[i], &cmode, sizeof(cmode)) == 0) {
181 TRACE("mode=%d\n", i);
184 ERR("unknown mode, shouldn't happen\n");
185 return 0; /* return first mode */
188 void X11DRV_XF86VM_SetCurrentMode(int mode)
190 if (!xf86vm_modes) return; /* no XVidMode */
193 XF86VidModeSwitchToMode(gdi_display, DefaultScreen(gdi_display), modes[mode]);
194 #if 0 /* it is said that SetViewPort causes problems with some X servers */
195 XF86VidModeSetViewPort(gdi_display, DefaultScreen(gdi_display), 0, 0);
197 XWarpPointer(gdi_display, None, DefaultRootWindow(gdi_display), 0, 0, 0, 0, 0, 0);
199 XSync(gdi_display, False);
203 void X11DRV_XF86VM_SetExclusiveMode(int lock)
205 if (!xf86vm_modes) return; /* no XVidMode */
208 XF86VidModeLockModeSwitch(gdi_display, DefaultScreen(gdi_display), lock);
212 /* actual DirectDraw HAL stuff */
214 static DWORD PASCAL X11DRV_XF86VM_SetMode(LPDDHAL_SETMODEDATA data)
216 X11DRV_XF86VM_SetCurrentMode(data->dwModeIndex);
217 X11DRV_DDHAL_SwitchMode(data->dwModeIndex, NULL, NULL);
218 data->ddRVal = DD_OK;
219 return DDHAL_DRIVER_HANDLED;
222 int X11DRV_XF86VM_CreateDriver(LPDDHALINFO info)
224 if (!xf86vm_mode_count) return 0; /* no XVidMode */
226 info->dwNumModes = xf86vm_mode_count;
227 info->lpModeInfo = xf86vm_modes;
228 X11DRV_DDHAL_SwitchMode(X11DRV_XF86VM_GetCurrentMode(), NULL, NULL);
229 info->lpDDCallbacks->SetMode = X11DRV_XF86VM_SetMode;
234 /***** GAMMA CONTROL *****/
235 /* (only available in XF86VidMode 2.x) */
237 #ifdef X_XF86VidModeSetGamma
239 static void GenerateRampFromGamma(WORD ramp[256], float gamma)
241 float r_gamma = 1/gamma;
243 TRACE("gamma is %f\n", r_gamma);
244 for (i=0; i<256; i++)
245 ramp[i] = pow(i/255.0, r_gamma) * 65535.0;
248 static BOOL ComputeGammaFromRamp(WORD ramp[256], float *gamma)
250 float r_x, r_y, r_lx, r_ly, r_d, r_v, r_e, g_avg, g_min, g_max;
251 unsigned i, f, l, g_n, c;
255 ERR("inverted or flat gamma ramp (%d->%d), rejected\n", f, l);
259 g_min = g_max = g_avg = 0.0;
260 /* check gamma ramp entries to estimate the gamma */
261 TRACE("analyzing gamma ramp (%d->%d)\n", f, l);
262 for (i=1, g_n=0; i<255; i++) {
263 if (ramp[i] < f || ramp[i] > l) {
264 ERR("strange gamma ramp ([%d]=%d for %d->%d), rejected\n", i, ramp[i], f, l);
268 if (!c) continue; /* avoid log(0) */
270 /* normalize entry values into 0..1 range */
271 r_x = i/255.0; r_y = c / r_d;
272 /* compute logarithms of values */
273 r_lx = log(r_x); r_ly = log(r_y);
274 /* compute gamma for this entry */
276 /* compute differential (error estimate) for this entry */
277 /* some games use table-based logarithms that magnifies the error by 128 */
278 r_e = -r_lx * 128 / (c * r_lx * r_lx);
280 /* compute min & max while compensating for estimated error */
281 if (!g_n || g_min > (r_v + r_e)) g_min = r_v + r_e;
282 if (!g_n || g_max < (r_v - r_e)) g_max = r_v - r_e;
287 /* TRACE("[%d]=%d, gamma=%f, error=%f\n", i, ramp[i], r_v, r_e); */
290 ERR("no gamma data, shouldn't happen\n");
294 TRACE("low bias is %d, high is %d, gamma is %5.3f\n", f, 65535-l, g_avg);
295 /* the bias could be because the app wanted something like a "red shift"
296 * like when you're hit in Quake, but XVidMode doesn't support it,
297 * so we have to reject a significant bias */
298 if (f && f > (pow(1/255.0, g_avg) * 65536.0)) {
299 ERR("low-biased gamma ramp (%d), rejected\n", f);
302 /* check that the gamma is reasonably uniform across the ramp */
303 if (g_max - g_min > 0.1) {
304 ERR("ramp not uniform (max=%f, min=%f, avg=%f), rejected\n", g_max, g_min, g_avg);
307 /* ok, now we're pretty sure we can set the desired gamma ramp,
313 #endif /* X_XF86VidModeSetGamma */
315 /* Hmm... should gamma control be available in desktop mode or not?
316 * I'll assume that it should */
318 BOOL X11DRV_XF86VM_GetGammaRamp(LPDDGAMMARAMP ramp)
320 #ifdef X_XF86VidModeSetGamma
321 XF86VidModeGamma gamma;
324 if (xf86vm_major < 2) return FALSE; /* no gamma control */
325 #ifdef X_XF86VidModeSetGammaRamp
326 else if (xf86vm_use_gammaramp)
330 ret = XF86VidModeGetGammaRamp(gdi_display, DefaultScreen(gdi_display), 256,
331 ramp->red, ramp->green, ramp->blue);
339 ret = XF86VidModeGetGamma(gdi_display, DefaultScreen(gdi_display), &gamma);
342 GenerateRampFromGamma(ramp->red, gamma.red);
343 GenerateRampFromGamma(ramp->green, gamma.green);
344 GenerateRampFromGamma(ramp->blue, gamma.blue);
348 #endif /* X_XF86VidModeSetGamma */
352 BOOL X11DRV_XF86VM_SetGammaRamp(LPDDGAMMARAMP ramp)
354 #ifdef X_XF86VidModeSetGamma
355 XF86VidModeGamma gamma;
357 if (xf86vm_major < 2) return FALSE; /* no gamma control */
358 #ifdef X_XF86VidModeSetGammaRamp
359 else if (xf86vm_use_gammaramp)
363 ret = XF86VidModeSetGammaRamp(gdi_display, DefaultScreen(gdi_display), 256,
364 ramp->red, ramp->green, ramp->blue);
371 if (ComputeGammaFromRamp(ramp->red, &gamma.red) &&
372 ComputeGammaFromRamp(ramp->green, &gamma.green) &&
373 ComputeGammaFromRamp(ramp->blue, &gamma.blue)) {
376 ret = XF86VidModeSetGamma(gdi_display, DefaultScreen(gdi_display), &gamma);
381 #endif /* X_XF86VidModeSetGamma */
385 #endif /* HAVE_LIBXXF86VM */
387 /***********************************************************************
388 * GetDeviceGammaRamp (X11DRV.@)
390 * FIXME: should move to somewhere appropriate, but probably not before
391 * the stuff in graphics/x11drv/ has been moved to dlls/x11drv, so that
392 * they can include xvidmode.h directly
394 BOOL X11DRV_GetDeviceGammaRamp(X11DRV_PDEVICE *physDev, LPVOID ramp)
396 #ifdef HAVE_LIBXXF86VM
397 return X11DRV_XF86VM_GetGammaRamp(ramp);
403 /***********************************************************************
404 * SetDeviceGammaRamp (X11DRV.@)
406 * FIXME: should move to somewhere appropriate, but probably not before
407 * the stuff in graphics/x11drv/ has been moved to dlls/x11drv, so that
408 * they can include xvidmode.h directly
410 BOOL X11DRV_SetDeviceGammaRamp(X11DRV_PDEVICE *physDev, LPVOID ramp)
412 #ifdef HAVE_LIBXXF86VM
413 return X11DRV_XF86VM_SetGammaRamp(ramp);
419 /***********************************************************************
420 * EnumDisplaySettingsExW (X11DRV.@)
422 BOOL X11DRV_EnumDisplaySettingsExW( LPCWSTR name, DWORD n, LPDEVMODEW devmode, DWORD flags)
424 DWORD dwBpp = screen_depth;
425 if (dwBpp == 24) dwBpp = 32;
426 devmode->dmDisplayFlags = 0;
427 devmode->dmDisplayFrequency = 85;
428 devmode->dmSize = sizeof(DEVMODEW);
429 if (n==0 || n == (DWORD)-1 || n == (DWORD)-2)
431 devmode->dmBitsPerPel = dwBpp;
432 devmode->dmPelsHeight = GetSystemMetrics(SM_CYSCREEN);
433 devmode->dmPelsWidth = GetSystemMetrics(SM_CXSCREEN);
434 devmode->dmFields = (DM_PELSWIDTH|DM_PELSHEIGHT|DM_BITSPERPEL);
435 TRACE("mode %ld -- returning default %ldx%ldx%ldbpp\n", n,
436 devmode->dmPelsWidth, devmode->dmPelsHeight, devmode->dmBitsPerPel);
439 #ifdef HAVE_LIBXXF86VM
440 if (n <= xf86vm_mode_count)
442 XF86VidModeModeInfo *mode;
444 devmode->dmPelsWidth = mode->hdisplay;
445 devmode->dmPelsHeight = mode->vdisplay;
446 devmode->dmBitsPerPel = dwBpp;
447 devmode->dmDisplayFrequency = mode->dotclock * 1000 / (mode->htotal * mode->vtotal);
448 devmode->dmFields = (DM_PELSWIDTH|DM_PELSHEIGHT|DM_BITSPERPEL|DM_DISPLAYFREQUENCY);
449 TRACE("mode %ld -- %ldx%ldx%ldbpp\n", n,
450 devmode->dmPelsWidth, devmode->dmPelsHeight, devmode->dmBitsPerPel);
454 TRACE("mode %ld -- not present\n", n);
460 #define _X_FIELD(prefix, bits) if ((fields) & prefix##_##bits) {p+=sprintf(p, "%s%s", first ? "" : ",", #bits); first=FALSE;}
461 static const char * _CDS_flags(DWORD fields)
466 _X_FIELD(CDS,UPDATEREGISTRY);_X_FIELD(CDS,TEST);_X_FIELD(CDS,FULLSCREEN);
467 _X_FIELD(CDS,GLOBAL);_X_FIELD(CDS,SET_PRIMARY);_X_FIELD(CDS,RESET);
468 _X_FIELD(CDS,SETRECT);_X_FIELD(CDS,NORESET);
469 return wine_dbg_sprintf("%s", buf);
471 static const char * _DM_fields(DWORD fields)
476 _X_FIELD(DM,BITSPERPEL);_X_FIELD(DM,PELSWIDTH);_X_FIELD(DM,PELSHEIGHT);
477 _X_FIELD(DM,DISPLAYFLAGS);_X_FIELD(DM,DISPLAYFREQUENCY);_X_FIELD(DM,POSITION);
478 return wine_dbg_sprintf("%s", buf);
482 /***********************************************************************
483 * ChangeDisplaySettingsExW (X11DRV.@)
485 LONG X11DRV_ChangeDisplaySettingsExW( LPCWSTR devname, LPDEVMODEW devmode,
486 HWND hwnd, DWORD flags, LPVOID lpvoid )
489 DWORD dwBpp = screen_depth;
490 if (dwBpp == 24) dwBpp = 32;
491 TRACE("(%s,%p,%p,0x%08lx,%p\n",debugstr_w(devname),devmode,hwnd,flags,lpvoid);
492 TRACE("flags=%s\n",_CDS_flags(flags));
495 TRACE("Return to original display mode\n");
496 #ifdef HAVE_LIBXXF86VM
497 X11DRV_XF86VM_SetCurrentMode(xf86vm_initial_mode);
499 return DISP_CHANGE_SUCCESSFUL;
502 if (TRACE_ON(x11drv))
504 TRACE("DM_fields=%s\n",_DM_fields(devmode->dmFields));
505 TRACE("width=%ld height=%ld bpp=%ld freq=%ld\n",
506 devmode->dmPelsWidth,devmode->dmPelsHeight,
507 devmode->dmBitsPerPel,devmode->dmDisplayFrequency);
509 if ((!(devmode->dmFields & DM_BITSPERPEL) || devmode->dmBitsPerPel == dwBpp) &&
510 (!(devmode->dmFields & DM_PELSWIDTH) || devmode->dmPelsWidth == GetSystemMetrics(SM_CXSCREEN)) &&
511 (!(devmode->dmFields & DM_PELSHEIGHT) || devmode->dmPelsHeight == GetSystemMetrics(SM_CYSCREEN)))
513 /* we have a valid mode */
514 TRACE("Requested mode matches current mode -- no change!\n");
515 return DISP_CHANGE_SUCCESSFUL;
518 #ifdef HAVE_LIBXXF86VM
519 for (i = 0; i < xf86vm_mode_count; i++)
521 XF86VidModeModeInfo *mode = modes[i];
522 if (devmode->dmFields & DM_BITSPERPEL)
524 if (devmode->dmBitsPerPel != dwBpp)
527 if (devmode->dmFields & DM_PELSWIDTH)
529 if (devmode->dmPelsWidth != mode->hdisplay)
532 if (devmode->dmFields & DM_PELSHEIGHT)
534 if (devmode->dmPelsHeight != mode->vdisplay)
537 /* we have a valid mode */
538 TRACE("Matches mode %ld\n", i);
539 X11DRV_XF86VM_SetCurrentMode(i-1);
541 SYSMETRICS_Set( SM_CXSCREEN, devmode->dmPelsWidth );
542 SYSMETRICS_Set( SM_CYSCREEN, devmode->dmPelsHeight );
544 return DISP_CHANGE_SUCCESSFUL;
548 /* no valid modes found */
549 ERR("No matching mode found!\n");
550 return DISP_CHANGE_BADMODE;