graphics/x11drv/opengl.c

   1 /*
   2  * X11DRV OpenGL functions
   3  *
   4  * Copyright 2000 Lionel Ulmer
   5  *
   6  */
   7
   8 #include "config.h"
   9
  10 #include "ts_xlib.h"
  11
  12 #include <stdlib.h>
  13 #include <string.h>
  14
  15 #include "debugtools.h"
  16 #include "gdi.h"
  17 #include "x11drv.h"
  18 #include "wine_gl.h"
  19
  20 DEFAULT_DEBUG_CHANNEL(opengl)
  21
  22 #ifdef HAVE_OPENGL
  23
  24 static void dump_PIXELFORMATDESCRIPTOR(PIXELFORMATDESCRIPTOR *ppfd) {
  25   DPRINTF("  - size / version : %d / %d\n", ppfd->nSize, ppfd->nVersion);
  26   DPRINTF("  - dwFlags : ");
  27 #define TEST_AND_DUMP(t,tv) if ((t) & (tv)) DPRINTF(#tv " ")
  28   TEST_AND_DUMP(ppfd->dwFlags, PFD_DEPTH_DONTCARE);
  29   TEST_AND_DUMP(ppfd->dwFlags, PFD_DOUBLEBUFFER);
  30   TEST_AND_DUMP(ppfd->dwFlags, PFD_DOUBLEBUFFER_DONTCARE);
  31   TEST_AND_DUMP(ppfd->dwFlags, PFD_DRAW_TO_WINDOW);
  32   TEST_AND_DUMP(ppfd->dwFlags, PFD_DRAW_TO_BITMAP);
  33   TEST_AND_DUMP(ppfd->dwFlags, PFD_GENERIC_ACCELERATED);
  34   TEST_AND_DUMP(ppfd->dwFlags, PFD_GENERIC_FORMAT);
  35   TEST_AND_DUMP(ppfd->dwFlags, PFD_NEED_PALETTE);
  36   TEST_AND_DUMP(ppfd->dwFlags, PFD_NEED_SYSTEM_PALETTE);
  37   TEST_AND_DUMP(ppfd->dwFlags, PFD_STEREO);
  38   TEST_AND_DUMP(ppfd->dwFlags, PFD_STEREO_DONTCARE);
  39   TEST_AND_DUMP(ppfd->dwFlags, PFD_SUPPORT_GDI);
  40   TEST_AND_DUMP(ppfd->dwFlags, PFD_SUPPORT_OPENGL);
  41   TEST_AND_DUMP(ppfd->dwFlags, PFD_SWAP_COPY);
  42   TEST_AND_DUMP(ppfd->dwFlags, PFD_SWAP_EXCHANGE);
  43   TEST_AND_DUMP(ppfd->dwFlags, PFD_SWAP_LAYER_BUFFERS);
  44 #undef TEST_AND_DUMP
  45   DPRINTF("\n");
  46
  47   DPRINTF("  - iPixelType : ");
  48   switch (ppfd->iPixelType) {
  49   case PFD_TYPE_RGBA: DPRINTF("PFD_TYPE_RGBA"); break;
  50   case PFD_TYPE_COLORINDEX: DPRINTF("PFD_TYPE_COLORINDEX"); break;
  51   }
  52   DPRINTF("\n");
  53
  54   DPRINTF("  - Color   : %d\n", ppfd->cColorBits);
  55   DPRINTF("  - Alpha   : %d\n", ppfd->cAlphaBits);
  56   DPRINTF("  - Accum   : %d\n", ppfd->cAccumBits);
  57   DPRINTF("  - Depth   : %d\n", ppfd->cDepthBits);
  58   DPRINTF("  - Stencil : %d\n", ppfd->cStencilBits);
  59   DPRINTF("  - Aux     : %d\n", ppfd->cAuxBuffers);
  60
  61   DPRINTF("  - iLayerType : ");
  62   switch (ppfd->iLayerType) {
  63   case PFD_MAIN_PLANE: DPRINTF("PFD_MAIN_PLANE"); break;
  64   case PFD_OVERLAY_PLANE: DPRINTF("PFD_OVERLAY_PLANE"); break;
  65   case PFD_UNDERLAY_PLANE: DPRINTF("PFD_UNDERLAY_PLANE"); break;
  66   }
  67   DPRINTF("\n");
  68 }
  69
  70 /* X11DRV_ChoosePixelFormat
  71
  72      Equivalent of glXChooseVisual
  73 */
  74 int X11DRV_ChoosePixelFormat(DC *dc,
  75                              const PIXELFORMATDESCRIPTOR *ppfd) {
  76 #define TEST_AND_ADD1(t,a) if (t) att_list[att_pos++] = a
  77 #define TEST_AND_ADD2(t,a,b) if (t) { att_list[att_pos++] = a; att_list[att_pos++] = b; }
  78 #define NULL_TEST_AND_ADD2(tv,a,b) att_list[att_pos++] = a; att_list[att_pos++] = ((tv) == 0 ? 0 : b)
  79 #define ADD2(a,b) att_list[att_pos++] = a; att_list[att_pos++] = b
  80
  81   X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
  82   int att_list[64];
  83   int att_pos = 0;
  84   XVisualInfo *vis;
  85
  86   if (TRACE_ON(opengl)) {
  87     TRACE("(%p,%p)\n", dc, ppfd);
  88
  89     dump_PIXELFORMATDESCRIPTOR((PIXELFORMATDESCRIPTOR *) ppfd);
  90   }
  91
  92   /* For the moment, we are dumb : we always allocate a new XVisualInfo structure,
  93      we do not try to find an already found that could match */
  94   if (physDev->used_visuals == MAX_PIXELFORMATS) {
  95     ERR("Maximum number of visuals reached !\n");
  96     /* Should SetError here... */
  97     return 0;
  98   }
  99
 100   if (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) {
 101     ERR("Flag not supported !\n");
 102     /* Should SetError here... */
 103     return 0;
 104   }
 105
 106   /* Now, build the request to GLX */
 107   TEST_AND_ADD1(ppfd->dwFlags & PFD_DOUBLEBUFFER, GLX_DOUBLEBUFFER);
 108   TEST_AND_ADD1(ppfd->dwFlags & PFD_STEREO, GLX_STEREO);
 109   TEST_AND_ADD1(ppfd->iPixelType == PFD_TYPE_RGBA, GLX_RGBA);
 110   TEST_AND_ADD2(ppfd->iPixelType == PFD_TYPE_COLORINDEX, GLX_BUFFER_SIZE, ppfd->cColorBits);
 111
 112   NULL_TEST_AND_ADD2(ppfd->cDepthBits, GLX_DEPTH_SIZE, 8);
 113   /* These flags are not supported yet...
 114
 115      NULL_TEST_AND_ADD2(ppfd->cAlphaBits, GLX_ALPHA_SIZE, 8);
 116      ADD2(GLX_ACCUM_SIZE, ppfd->cAccumBits);
 117      ADD2(GLX_STENCIL_SIZE, ppfd->cStencilBits);
 118      ADD2(GLX_AUX_BUFFERS, ppfd->cAuxBuffers); */
 119   att_list[att_pos] = None;
 120
 121   ENTER_GL(); {
 122     /*
 123        This command cannot be used as we need to use the default visual...
 124        Let's hope it at least contains some OpenGL functionnalities
 125
 126        vis = glXChooseVisual(display, DefaultScreen(display), att_list);
 127     */
 128     int num;
 129     XVisualInfo template;
 130
 131     template.visualid = XVisualIDFromVisual(visual);
 132     vis = XGetVisualInfo(display, VisualIDMask, &template, &num);
 133
 134     TRACE("Found visual : %p - returns %d\n", vis, physDev->used_visuals + 1);
 135   }
 136   LEAVE_GL();
 137
 138   if (vis == NULL) {
 139     ERR("No visual found !\n");
 140     /* Should SetError here... */
 141     return 0;
 142   }
 143   physDev->visuals[physDev->used_visuals++] = vis;
 144
 145   return physDev->used_visuals;
 146 }
 147
 148 /* X11DRV_DescribePixelFormat
 149
 150      Get the pixel-format descriptor associated to the given id
 151 */
 152 int X11DRV_DescribePixelFormat(DC *dc,
 153                                int iPixelFormat,
 154                                UINT nBytes,
 155                                PIXELFORMATDESCRIPTOR *ppfd) {
 156   X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 157   XVisualInfo *vis;
 158   int value;
 159   int rb,gb,bb,ab;
 160
 161   TRACE("(%p,%d,%d,%p)\n", dc, iPixelFormat, nBytes, ppfd);
 162
 163   if (nBytes < sizeof(PIXELFORMATDESCRIPTOR)) {
 164     ERR("Wrong structure size !\n");
 165     /* Should set error */
 166     return 0;
 167   }
 168   if ((iPixelFormat > MAX_PIXELFORMATS) ||
 169       (iPixelFormat > physDev->used_visuals + 1) ||
 170       (iPixelFormat <= 0)) {
 171     ERR("Wrong pixel format !\n");
 172     /* Should set error */
 173     return 0;
 174   }
 175
 176   if (iPixelFormat == physDev->used_visuals + 1) {
 177     int dblBuf[]={GLX_RGBA,GLX_DEPTH_SIZE,16,GLX_DOUBLEBUFFER,None};
 178
 179     /* Create a 'standard' X Visual */
 180     ENTER_GL();
 181     vis = glXChooseVisual(display,
 182                           DefaultScreen(display),
 183                           dblBuf);
 184     LEAVE_GL();
 185
 186     WARN("Uninitialized Visual. Creating standard (%p) !\n", vis);
 187
 188     if (vis == NULL) {
 189       ERR("Could not create standard visual !\n");
 190       /* Should set error */
 191       return 0;
 192     }
 193
 194     physDev->visuals[physDev->used_visuals++] = vis;
 195   }
 196   vis = physDev->visuals[iPixelFormat - 1];
 197
 198   memset(ppfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
 199   ppfd->nSize = sizeof(PIXELFORMATDESCRIPTOR);
 200   ppfd->nVersion = 1;
 201
 202   /* These flags are always the same... */
 203   ppfd->dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_GENERIC_ACCELERATED;
 204   /* Now the flags extraced from the Visual */
 205   ENTER_GL();
 206   glXGetConfig(display, vis, GLX_DOUBLEBUFFER, &value); if (value) ppfd->dwFlags |= PFD_DOUBLEBUFFER;
 207   glXGetConfig(display, vis, GLX_STEREO, &value); if (value) ppfd->dwFlags |= PFD_STEREO;
 208
 209   /* Pixel type */
 210   glXGetConfig(display, vis, GLX_RGBA, &value);
 211   if (value)
 212     ppfd->iPixelType = PFD_TYPE_RGBA;
 213   else
 214     ppfd->iPixelType = PFD_TYPE_COLORINDEX;
 215
 216   /* Color bits */
 217   glXGetConfig(display, vis, GLX_BUFFER_SIZE, &value);
 218   ppfd->cColorBits = value;
 219
 220   /* Red, green, blue and alpha bits / shifts */
 221   if (ppfd->iPixelType == PFD_TYPE_RGBA) {
 222     glXGetConfig(display, vis, GLX_RED_SIZE, &rb);
 223     glXGetConfig(display, vis, GLX_GREEN_SIZE, &gb);
 224     glXGetConfig(display, vis, GLX_BLUE_SIZE, &bb);
 225     glXGetConfig(display, vis, GLX_ALPHA_SIZE, &ab);
 226
 227     ppfd->cRedBits = rb;
 228     ppfd->cRedShift = gb + bb + ab;
 229     ppfd->cBlueBits = bb;
 230     ppfd->cBlueShift = ab;
 231     ppfd->cGreenBits = gb;
 232     ppfd->cGreenShift = bb + ab;
 233     ppfd->cAlphaBits = ab;
 234     ppfd->cAlphaShift = 0;
 235   } else {
 236     ppfd->cRedBits = 0;
 237     ppfd->cRedShift = 0;
 238     ppfd->cBlueBits = 0;
 239     ppfd->cBlueShift = 0;
 240     ppfd->cGreenBits = 0;
 241     ppfd->cGreenShift = 0;
 242     ppfd->cAlphaBits = 0;
 243     ppfd->cAlphaShift = 0;
 244   }
 245   /* Accums : to do ... */
 246
 247   /* Depth bits */
 248   glXGetConfig(display, vis, GLX_DEPTH_SIZE, &value);
 249   ppfd->cDepthBits = value;
 250   LEAVE_GL();
 251
 252   /* Aux, stencil : to do ... */
 253
 254   ppfd->iLayerType = PFD_MAIN_PLANE;
 255
 256   if (TRACE_ON(opengl)) {
 257     dump_PIXELFORMATDESCRIPTOR(ppfd);
 258   }
 259
 260   return MAX_PIXELFORMATS;
 261 }
 262
 263 /* X11DRV_GetPixelFormat
 264
 265      Get the pixel-format id used by this DC
 266 */
 267 int X11DRV_GetPixelFormat(DC *dc) {
 268   X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 269
 270   TRACE("(%p): returns %d\n", dc, physDev->current_pf);
 271
 272   return physDev->current_pf;
 273 }
 274
 275 /* X11DRV_SetPixelFormat
 276
 277      Set the pixel-format id used by this DC
 278 */
 279 BOOL X11DRV_SetPixelFormat(DC *dc,
 280                            int iPixelFormat,
 281                            const PIXELFORMATDESCRIPTOR *ppfd) {
 282   X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 283
 284   TRACE("(%p,%d,%p)\n", dc, iPixelFormat, ppfd);
 285
 286   physDev->current_pf = iPixelFormat;
 287
 288   return TRUE;
 289 }
 290
 291 /* X11DRV_SwapBuffers
 292
 293      Swap the buffers of this DC
 294 */
 295 BOOL X11DRV_SwapBuffers(DC *dc) {
 296   X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 297
 298   TRACE("(%p)\n", dc);
 299
 300   ENTER_GL();
 301   glXSwapBuffers(display, physDev->drawable);
 302   LEAVE_GL();
 303
 304   return TRUE;
 305 }
 306
 307 #else  /* defined(HAVE_OPENGL) */
 308
 309 int X11DRV_ChoosePixelFormat(DC *dc,
 310                              const PIXELFORMATDESCRIPTOR *ppfd) {
 311   ERR("No OpenGL support compiled in.\n");
 312
 313   return 0;
 314 }
 315
 316 int X11DRV_DescribePixelFormat(DC *dc,
 317                                int iPixelFormat,
 318                                UINT nBytes,
 319                                PIXELFORMATDESCRIPTOR *ppfd) {
 320   ERR("No OpenGL support compiled in.\n");
 321
 322   return 0;
 323 }
 324
 325 int X11DRV_GetPixelFormat(DC *dc) {
 326   ERR("No OpenGL support compiled in.\n");
 327
 328   return 0;
 329 }
 330
 331 BOOL X11DRV_SetPixelFormat(DC *dc,
 332                            int iPixelFormat,
 333                            const PIXELFORMATDESCRIPTOR *ppfd) {
 334   ERR("No OpenGL support compiled in.\n");
 335
 336   return FALSE;
 337 }
 338
 339 BOOL X11DRV_SwapBuffers(DC *dc) {
 340   ERR("No OpenGL support compiled in.\n");
 341
 342   return FALSE;
 343 }
 344
 345 #endif /* defined(HAVE_OPENGL) */