dlls/x11drv/dga2.c

   1 /*
   2  * DirectDraw DGA2 interface
   3  *
   4  * Copyright 2001 TransGaming Technologies, Inc.
   5  *
   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.
  10  *
  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.
  15  *
  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
  19  */
  20
  21 #include "config.h"
  22
  23 #ifdef HAVE_LIBXXF86DGA2
  24
  25 #include "ts_xlib.h"
  26 #include "ts_xf86dga2.h"
  27 #include "x11drv.h"
  28 #include "x11ddraw.h"
  29 #include "dga2.h"
  30
  31 #include "windef.h"
  32 #include "wingdi.h"
  33 #include "ddrawi.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(x11drv);
  37
  38 extern int usedga;
  39
  40 LPDDHALMODEINFO xf86dga2_modes;
  41 unsigned xf86dga2_mode_count;
  42 static XDGAMode* modes;
  43 static int dga_event, dga_error;
  44
  45 static void convert_mode(XDGAMode *mode, LPDDHALMODEINFO info)
  46 {
  47   info->dwWidth        = mode->viewportWidth;
  48   info->dwHeight       = mode->viewportHeight;
  49   info->wRefreshRate   = mode->verticalRefresh;
  50   info->lPitch         = mode->bytesPerScanline;
  51   info->dwBPP          = (mode->depth < 24) ? mode->depth : mode->bitsPerPixel;
  52   info->wFlags         = (mode->depth == 8) ? DDMODEINFO_PALETTIZED : 0;
  53   info->dwRBitMask     = mode->redMask;
  54   info->dwGBitMask     = mode->greenMask;
  55   info->dwBBitMask     = mode->blueMask;
  56   info->dwAlphaBitMask = 0;
  57   TRACE(" width=%ld, height=%ld, bpp=%ld, refresh=%d\n",
  58         info->dwWidth, info->dwHeight, info->dwBPP, info->wRefreshRate);
  59 }
  60
  61 static int DGA2ErrorHandler(Display *dpy, XErrorEvent *event, void *arg)
  62 {
  63     return 1;
  64 }
  65
  66 void X11DRV_XF86DGA2_Init(void)
  67 {
  68   int nmodes, major, minor, i;
  69   Bool ok;
  70
  71   if (xf86dga2_modes) return; /* already initialized? */
  72
  73   /* if in desktop mode, don't use DGA */
  74   if (root_window != DefaultRootWindow(gdi_display)) return;
  75
  76   if (!usedga) return;
  77
  78   if (!TSXDGAQueryExtension(gdi_display, &dga_event, &dga_error)) return;
  79
  80   X11DRV_expect_error(gdi_display, DGA2ErrorHandler, NULL);
  81   ok = TSXDGAQueryVersion(gdi_display, &major, &minor);
  82   if (X11DRV_check_error()) ok = FALSE;
  83   if (!ok) return;
  84
  85   if (major < 2) return; /* only bother with DGA 2+ */
  86
  87   /* test that it works */
  88   if (!TSXDGAOpenFramebuffer(gdi_display, DefaultScreen(gdi_display))) {
  89     WARN("disabling XF86DGA2 (insufficient permissions?)\n");
  90     return;
  91   }
  92   TSXDGACloseFramebuffer(gdi_display, DefaultScreen(gdi_display));
  93
  94   /* retrieve modes */
  95   modes = TSXDGAQueryModes(gdi_display, DefaultScreen(gdi_display), &nmodes);
  96   if (!modes) return;
  97
  98   TRACE("DGA modes: count=%d\n", nmodes);
  99
 100   xf86dga2_mode_count = nmodes+1;
 101   xf86dga2_modes = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DDHALMODEINFO) * (nmodes+1));
 102
 103   /* make dummy mode for exiting DGA */
 104   memset(&xf86dga2_modes[0], 0, sizeof(xf86dga2_modes[0]));
 105
 106   /* convert modes to DDHALMODEINFO format */
 107   for (i=0; i<nmodes; i++)
 108     convert_mode(&modes[i], &xf86dga2_modes[i+1]);
 109
 110   TRACE("Enabling XF86DGA2 mode\n");
 111 }
 112
 113 void X11DRV_XF86DGA2_Cleanup(void)
 114 {
 115   if (modes) TSXFree(modes);
 116 }
 117
 118 static XDGADevice *dga_dev;
 119
 120 static VIDMEM dga_mem = {
 121   VIDMEM_ISRECTANGULAR | VIDMEM_ISHEAP
 122 };
 123
 124 static DWORD PASCAL X11DRV_XF86DGA2_SetMode(LPDDHAL_SETMODEDATA data)
 125 {
 126   LPDDRAWI_DIRECTDRAW_LCL ddlocal = data->lpDD->lpExclusiveOwner;
 127   DWORD vram;
 128   Display *display = gdi_display;
 129
 130   data->ddRVal = DD_OK;
 131   if (data->dwModeIndex) {
 132     /* enter DGA */
 133     XDGADevice *new_dev = NULL;
 134     if (dga_dev || TSXDGAOpenFramebuffer(display, DefaultScreen(display)))
 135       new_dev = TSXDGASetMode(display, DefaultScreen(display), modes[data->dwModeIndex-1].num);
 136     if (new_dev) {
 137       TSXDGASetViewport(display, DefaultScreen(display), 0, 0, XDGAFlipImmediate);
 138       if (dga_dev) {
 139         VirtualFree(dga_dev->data, 0, MEM_RELEASE);
 140         TSXFree(dga_dev);
 141       } else {
 142         TSXDGASelectInput(display, DefaultScreen(display),
 143                           KeyPressMask|KeyReleaseMask|
 144                           ButtonPressMask|ButtonReleaseMask|
 145                           PointerMotionMask);
 146         X11DRV_EVENT_SetDGAStatus(ddlocal->hWnd, dga_event);
 147         X11DRV_EVENT_SetInputMethod(X11DRV_INPUT_RELATIVE);
 148       }
 149       dga_dev = new_dev;
 150       vram = dga_dev->mode.bytesPerScanline * dga_dev->mode.imageHeight;
 151       VirtualAlloc(dga_dev->data, vram, MEM_RESERVE|MEM_SYSTEM, PAGE_READWRITE);
 152       dga_mem.fpStart = (FLATPTR)dga_dev->data;
 153       dga_mem.u1.dwWidth = dga_dev->mode.bytesPerScanline;
 154       dga_mem.u2.dwHeight = dga_dev->mode.imageHeight;
 155       X11DRV_DDHAL_SwitchMode(data->dwModeIndex, dga_dev->data, &dga_mem);
 156       X11DRV_DD_IsDirect = TRUE;
 157     }
 158     else {
 159       ERR("failed\n");
 160       if (!dga_dev) TSXDGACloseFramebuffer(display, DefaultScreen(display));
 161       data->ddRVal = DDERR_GENERIC;
 162     }
 163   }
 164   else if (dga_dev) {
 165     /* exit DGA */
 166     X11DRV_DD_IsDirect = FALSE;
 167     X11DRV_DDHAL_SwitchMode(0, NULL, NULL);
 168     TSXDGASetMode(display, DefaultScreen(display), 0);
 169     VirtualFree(dga_dev->data, 0, MEM_RELEASE);
 170     X11DRV_EVENT_SetInputMethod(X11DRV_INPUT_ABSOLUTE);
 171     X11DRV_EVENT_SetDGAStatus(0, -1);
 172     TSXFree(dga_dev);
 173     TSXDGACloseFramebuffer(display, DefaultScreen(display));
 174     dga_dev = NULL;
 175   }
 176   return DDHAL_DRIVER_HANDLED;
 177 }
 178
 179 static LPDDHAL_CREATESURFACE X11DRV_XF86DGA2_old_create_surface;
 180
 181 static DWORD PASCAL X11DRV_XF86DGA2_CreateSurface(LPDDHAL_CREATESURFACEDATA data)
 182 {
 183   LPDDRAWI_DDRAWSURFACE_LCL lcl = *data->lplpSList;
 184   LPDDRAWI_DDRAWSURFACE_GBL gbl = lcl->lpGbl;
 185   LPDDSURFACEDESC2 desc = (LPDDSURFACEDESC2)data->lpDDSurfaceDesc;
 186   HRESULT hr = DDHAL_DRIVER_NOTHANDLED;
 187
 188   if (X11DRV_XF86DGA2_old_create_surface)
 189     hr = X11DRV_XF86DGA2_old_create_surface(data);
 190
 191   if (desc->ddsCaps.dwCaps & (DDSCAPS_PRIMARYSURFACE | DDSCAPS_BACKBUFFER)) {
 192     gbl->fpVidMem = 0; /* tell ddraw to allocate the memory */
 193     hr = DDHAL_DRIVER_HANDLED;
 194   }
 195   return hr;
 196 }
 197
 198 static DWORD PASCAL X11DRV_XF86DGA2_CreatePalette(LPDDHAL_CREATEPALETTEDATA data)
 199 {
 200   Display *display = gdi_display;
 201   data->lpDDPalette->u1.dwReserved1 = TSXDGACreateColormap(display, DefaultScreen(display), dga_dev, AllocAll);
 202   if (data->lpColorTable)
 203     X11DRV_DDHAL_SetPalEntries(data->lpDDPalette->u1.dwReserved1, 0, 256,
 204                                data->lpColorTable);
 205   data->ddRVal = DD_OK;
 206   return DDHAL_DRIVER_HANDLED;
 207 }
 208
 209 static DWORD PASCAL X11DRV_XF86DGA2_Flip(LPDDHAL_FLIPDATA data)
 210 {
 211   Display *display = gdi_display;
 212   if (data->lpSurfCurr == X11DRV_DD_Primary) {
 213     DWORD ofs = data->lpSurfCurr->lpGbl->fpVidMem - dga_mem.fpStart;
 214     TSXDGASetViewport(display, DefaultScreen(display),
 215                       (ofs % dga_dev->mode.bytesPerScanline)*8/dga_dev->mode.bitsPerPixel,
 216                       ofs / dga_dev->mode.bytesPerScanline,
 217                       XDGAFlipImmediate);
 218   }
 219   data->ddRVal = DD_OK;
 220   return DDHAL_DRIVER_HANDLED;
 221 }
 222
 223 static DWORD PASCAL X11DRV_XF86DGA2_SetPalette(LPDDHAL_SETPALETTEDATA data)
 224 {
 225   Display *display = gdi_display;
 226   if ((data->lpDDSurface == X11DRV_DD_Primary) &&
 227       data->lpDDPalette && data->lpDDPalette->u1.dwReserved1) {
 228     TSXDGAInstallColormap(display, DefaultScreen(display), data->lpDDPalette->u1.dwReserved1);
 229   }
 230   data->ddRVal = DD_OK;
 231   return DDHAL_DRIVER_HANDLED;
 232 }
 233
 234 int X11DRV_XF86DGA2_CreateDriver(LPDDHALINFO info)
 235 {
 236   if (!xf86dga2_mode_count) return 0; /* no DGA */
 237
 238   info->dwNumModes = xf86dga2_mode_count;
 239   info->lpModeInfo = xf86dga2_modes;
 240   info->dwModeIndex = 0;
 241
 242   X11DRV_XF86DGA2_old_create_surface = info->lpDDCallbacks->CreateSurface;
 243   info->lpDDCallbacks->SetMode = X11DRV_XF86DGA2_SetMode;
 244   info->lpDDCallbacks->CreateSurface = X11DRV_XF86DGA2_CreateSurface;
 245   info->lpDDCallbacks->CreatePalette = X11DRV_XF86DGA2_CreatePalette;
 246   info->lpDDSurfaceCallbacks->Flip = X11DRV_XF86DGA2_Flip;
 247   info->lpDDSurfaceCallbacks->SetPalette = X11DRV_XF86DGA2_SetPalette;
 248   return TRUE;
 249 }
 250
 251 #endif /* HAVE_LIBXXF86DGA2 */