dlls/x11drv/dga2.c

   1 /*
   2  * DirectDraw DGA2 interface
   3  *
   4  * Copyright 2001 TransGaming Technologies, Inc.
   5  */
   6
   7 #include "config.h"
   8
   9 #ifdef HAVE_LIBXXF86DGA2
  10
  11 #include "ts_xlib.h"
  12 #include "ts_xf86dga2.h"
  13 #include "x11drv.h"
  14 #include "x11ddraw.h"
  15 #include "dga2.h"
  16
  17 #include "windef.h"
  18 #include "wingdi.h"
  19 #include "ddrawi.h"
  20 #include "debugtools.h"
  21
  22 DEFAULT_DEBUG_CHANNEL(x11drv);
  23
  24 extern int usedga;
  25
  26 LPDDHALMODEINFO xf86dga2_modes;
  27 unsigned xf86dga2_mode_count;
  28 static XDGAMode* modes;
  29 static int dga_event, dga_error;
  30
  31 static void convert_mode(XDGAMode *mode, LPDDHALMODEINFO info)
  32 {
  33   info->dwWidth        = mode->viewportWidth;
  34   info->dwHeight       = mode->viewportHeight;
  35   info->wRefreshRate   = mode->verticalRefresh;
  36   info->lPitch         = mode->bytesPerScanline;
  37   info->dwBPP          = (mode->depth < 24) ? mode->depth : mode->bitsPerPixel;
  38   info->wFlags         = (mode->depth == 8) ? DDMODEINFO_PALETTIZED : 0;
  39   info->dwRBitMask     = mode->redMask;
  40   info->dwGBitMask     = mode->greenMask;
  41   info->dwBBitMask     = mode->blueMask;
  42   info->dwAlphaBitMask = 0;
  43   TRACE(" width=%ld, height=%ld, bpp=%ld, refresh=%d\n",
  44         info->dwWidth, info->dwHeight, info->dwBPP, info->wRefreshRate);
  45 }
  46
  47 void X11DRV_XF86DGA2_Init(void)
  48 {
  49   int nmodes, major, minor, i;
  50
  51   if (xf86dga2_modes) return; /* already initialized? */
  52
  53   /* if in desktop mode, don't use DGA */
  54   if (root_window != DefaultRootWindow(gdi_display)) return;
  55
  56   if (!usedga) return;
  57
  58   if (!TSXDGAQueryExtension(gdi_display, &dga_event, &dga_error)) return;
  59
  60   if (!TSXDGAQueryVersion(gdi_display, &major, &minor)) return;
  61
  62   if (major < 2) return; /* only bother with DGA 2+ */
  63
  64   /* test that it works */
  65   if (!TSXDGAOpenFramebuffer(gdi_display, DefaultScreen(gdi_display))) {
  66     WARN("disabling XF86DGA2 (insufficient permissions?)\n");
  67     return;
  68   }
  69   TSXDGACloseFramebuffer(gdi_display, DefaultScreen(gdi_display));
  70
  71   /* retrieve modes */
  72   modes = TSXDGAQueryModes(gdi_display, DefaultScreen(gdi_display), &nmodes);
  73   if (!modes) return;
  74
  75   TRACE("DGA modes: count=%d\n", nmodes);
  76
  77   xf86dga2_mode_count = nmodes+1;
  78   xf86dga2_modes = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DDHALMODEINFO) * (nmodes+1));
  79
  80   /* make dummy mode for exiting DGA */
  81   memset(&xf86dga2_modes[0], 0, sizeof(xf86dga2_modes[0]));
  82
  83   /* convert modes to DDHALMODEINFO format */
  84   for (i=0; i<nmodes; i++)
  85     convert_mode(&modes[i], &xf86dga2_modes[i+1]);
  86
  87   TRACE("Enabling XF86DGA2 mode\n");
  88 }
  89
  90 void X11DRV_XF86DGA2_Cleanup(void)
  91 {
  92   if (modes) TSXFree(modes);
  93 }
  94
  95 static XDGADevice *dga_dev;
  96
  97 static VIDMEM dga_mem = {
  98   VIDMEM_ISRECTANGULAR | VIDMEM_ISHEAP
  99 };
 100
 101 static DWORD PASCAL X11DRV_XF86DGA2_SetMode(LPDDHAL_SETMODEDATA data)
 102 {
 103   LPDDRAWI_DIRECTDRAW_LCL ddlocal = data->lpDD->lpExclusiveOwner;
 104   DWORD vram;
 105   Display *display = gdi_display;
 106
 107   data->ddRVal = DD_OK;
 108   if (data->dwModeIndex) {
 109     /* enter DGA */
 110     XDGADevice *new_dev = NULL;
 111     if (dga_dev || TSXDGAOpenFramebuffer(display, DefaultScreen(display)))
 112       new_dev = TSXDGASetMode(display, DefaultScreen(display), modes[data->dwModeIndex-1].num);
 113     if (new_dev) {
 114       TSXDGASetViewport(display, DefaultScreen(display), 0, 0, XDGAFlipImmediate);
 115       if (dga_dev) {
 116         VirtualFree(dga_dev->data, 0, MEM_RELEASE);
 117         TSXFree(dga_dev);
 118       } else {
 119         TSXDGASelectInput(display, DefaultScreen(display),
 120                           KeyPressMask|KeyReleaseMask|
 121                           ButtonPressMask|ButtonReleaseMask|
 122                           PointerMotionMask);
 123         X11DRV_EVENT_SetDGAStatus(ddlocal->hWnd, dga_event);
 124         X11DRV_EVENT_SetInputMethod(X11DRV_INPUT_RELATIVE);
 125       }
 126       dga_dev = new_dev;
 127       vram = dga_dev->mode.bytesPerScanline * dga_dev->mode.imageHeight;
 128       VirtualAlloc(dga_dev->data, vram, MEM_RESERVE|MEM_SYSTEM, PAGE_READWRITE);
 129       dga_mem.fpStart = (FLATPTR)dga_dev->data;
 130       dga_mem.u1.dwWidth = dga_dev->mode.bytesPerScanline;
 131       dga_mem.u2.dwHeight = dga_dev->mode.imageHeight;
 132       X11DRV_DDHAL_SwitchMode(data->dwModeIndex, dga_dev->data, &dga_mem);
 133       X11DRV_DD_IsDirect = TRUE;
 134     }
 135     else {
 136       ERR("failed\n");
 137       if (!dga_dev) TSXDGACloseFramebuffer(display, DefaultScreen(display));
 138       data->ddRVal = DDERR_GENERIC;
 139     }
 140   }
 141   else if (dga_dev) {
 142     /* exit DGA */
 143     X11DRV_DD_IsDirect = FALSE;
 144     X11DRV_DDHAL_SwitchMode(0, NULL, NULL);
 145     TSXDGASetMode(display, DefaultScreen(display), 0);
 146     VirtualFree(dga_dev->data, 0, MEM_RELEASE);
 147     X11DRV_EVENT_SetInputMethod(X11DRV_INPUT_ABSOLUTE);
 148     X11DRV_EVENT_SetDGAStatus(0, -1);
 149     TSXFree(dga_dev);
 150     TSXDGACloseFramebuffer(display, DefaultScreen(display));
 151     dga_dev = NULL;
 152   }
 153   return DDHAL_DRIVER_HANDLED;
 154 }
 155
 156 static LPDDHAL_CREATESURFACE X11DRV_XF86DGA2_old_create_surface;
 157
 158 static DWORD PASCAL X11DRV_XF86DGA2_CreateSurface(LPDDHAL_CREATESURFACEDATA data)
 159 {
 160   LPDDRAWI_DDRAWSURFACE_LCL lcl = *data->lplpSList;
 161   LPDDRAWI_DDRAWSURFACE_GBL gbl = lcl->lpGbl;
 162   LPDDSURFACEDESC2 desc = (LPDDSURFACEDESC2)data->lpDDSurfaceDesc;
 163   HRESULT hr = DDHAL_DRIVER_NOTHANDLED;
 164
 165   if (X11DRV_XF86DGA2_old_create_surface)
 166     hr = X11DRV_XF86DGA2_old_create_surface(data);
 167
 168   if (desc->ddsCaps.dwCaps & (DDSCAPS_PRIMARYSURFACE | DDSCAPS_BACKBUFFER)) {
 169     gbl->fpVidMem = 0; /* tell ddraw to allocate the memory */
 170     hr = DDHAL_DRIVER_HANDLED;
 171   }
 172   return hr;
 173 }
 174
 175 static DWORD PASCAL X11DRV_XF86DGA2_CreatePalette(LPDDHAL_CREATEPALETTEDATA data)
 176 {
 177   Display *display = gdi_display;
 178   data->lpDDPalette->u1.dwReserved1 = TSXDGACreateColormap(display, DefaultScreen(display), dga_dev, AllocAll);
 179   if (data->lpColorTable)
 180     X11DRV_DDHAL_SetPalEntries(data->lpDDPalette->u1.dwReserved1, 0, 256,
 181                                data->lpColorTable);
 182   data->ddRVal = DD_OK;
 183   return DDHAL_DRIVER_HANDLED;
 184 }
 185
 186 static DWORD PASCAL X11DRV_XF86DGA2_Flip(LPDDHAL_FLIPDATA data)
 187 {
 188   Display *display = gdi_display;
 189   if (data->lpSurfCurr == X11DRV_DD_Primary) {
 190     DWORD ofs = data->lpSurfCurr->lpGbl->fpVidMem - dga_mem.fpStart;
 191     TSXDGASetViewport(display, DefaultScreen(display),
 192                       (ofs % dga_dev->mode.bytesPerScanline)*8/dga_dev->mode.bitsPerPixel,
 193                       ofs / dga_dev->mode.bytesPerScanline,
 194                       XDGAFlipImmediate);
 195   }
 196   data->ddRVal = DD_OK;
 197   return DDHAL_DRIVER_HANDLED;
 198 }
 199
 200 static DWORD PASCAL X11DRV_XF86DGA2_SetPalette(LPDDHAL_SETPALETTEDATA data)
 201 {
 202   Display *display = gdi_display;
 203   if ((data->lpDDSurface == X11DRV_DD_Primary) &&
 204       data->lpDDPalette && data->lpDDPalette->u1.dwReserved1) {
 205     TSXDGAInstallColormap(display, DefaultScreen(display), data->lpDDPalette->u1.dwReserved1);
 206   }
 207   data->ddRVal = DD_OK;
 208   return DDHAL_DRIVER_HANDLED;
 209 }
 210
 211 int X11DRV_XF86DGA2_CreateDriver(LPDDHALINFO info)
 212 {
 213   if (!xf86dga2_mode_count) return 0; /* no DGA */
 214
 215   info->dwNumModes = xf86dga2_mode_count;
 216   info->lpModeInfo = xf86dga2_modes;
 217   info->dwModeIndex = 0;
 218
 219   X11DRV_XF86DGA2_old_create_surface = info->lpDDCallbacks->CreateSurface;
 220   info->lpDDCallbacks->SetMode = X11DRV_XF86DGA2_SetMode;
 221   info->lpDDCallbacks->CreateSurface = X11DRV_XF86DGA2_CreateSurface;
 222   info->lpDDCallbacks->CreatePalette = X11DRV_XF86DGA2_CreatePalette;
 223   info->lpDDSurfaceCallbacks->Flip = X11DRV_XF86DGA2_Flip;
 224   info->lpDDSurfaceCallbacks->SetPalette = X11DRV_XF86DGA2_SetPalette;
 225   return TRUE;
 226 }
 227
 228 #endif /* HAVE_LIBXXF86DGA2 */