src/mesa/drivers/dri/i915/intel_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "glheader.h"
  29 #include "context.h"
  30 #include "matrix.h"
  31 #include "simple_list.h"
  32 #include "utils.h"
  33
  34
  35 #include "intel_screen.h"
  36
  37 #include "intel_tex.h"
  38 #include "intel_span.h"
  39 #include "intel_tris.h"
  40 #include "intel_ioctl.h"
  41
  42
  43
  44 #include "i830_dri.h"
  45
  46 #ifdef USE_NEW_INTERFACE
  47 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  48 #endif /*USE_NEW_INTERFACE*/
  49
  50
  51 static void intelPrintDRIInfo(intelScreenPrivate *intelScreen,
  52                              __DRIscreenPrivate *sPriv,
  53                             I830DRIPtr gDRIPriv)
  54 {
  55    fprintf(stderr, "Front size : 0x%x\n", sPriv->fbSize);
  56    fprintf(stderr, "Front offset : 0x%x\n", intelScreen->frontOffset);
  57    fprintf(stderr, "Back size : 0x%x\n", intelScreen->back.size);
  58    fprintf(stderr, "Back offset : 0x%x\n", intelScreen->backOffset);
  59    fprintf(stderr, "Depth size : 0x%x\n", intelScreen->depth.size);
  60    fprintf(stderr, "Depth offset : 0x%x\n", intelScreen->depthOffset);
  61    fprintf(stderr, "Texture size : 0x%x\n", intelScreen->textureSize);
  62    fprintf(stderr, "Texture offset : 0x%x\n", intelScreen->textureOffset);
  63    fprintf(stderr, "Memory : 0x%x\n", gDRIPriv->mem);
  64 }
  65
  66 static GLboolean intelInitDriver(__DRIscreenPrivate *sPriv)
  67 {
  68    intelScreenPrivate *intelScreen;
  69    I830DRIPtr         gDRIPriv = (I830DRIPtr)sPriv->pDevPriv;
  70
  71
  72    /* Allocate the private area */
  73    intelScreen = (intelScreenPrivate *)MALLOC(sizeof(intelScreenPrivate));
  74    if (!intelScreen) {
  75       fprintf(stderr,"\nERROR!  Allocating private area failed\n");
  76       return GL_FALSE;
  77    }
  78
  79    intelScreen->driScrnPriv = sPriv;
  80    sPriv->private = (void *)intelScreen;
  81
  82    intelScreen->deviceID = gDRIPriv->deviceID;
  83    intelScreen->width = gDRIPriv->width;
  84    intelScreen->height = gDRIPriv->height;
  85    intelScreen->mem = gDRIPriv->mem;
  86    intelScreen->cpp = gDRIPriv->cpp;
  87    intelScreen->frontPitch = gDRIPriv->fbStride;
  88    intelScreen->frontOffset = gDRIPriv->fbOffset;
  89
  90    switch (gDRIPriv->bitsPerPixel) {
  91    case 15: intelScreen->fbFormat = DV_PF_555; break;
  92    case 16: intelScreen->fbFormat = DV_PF_565; break;
  93    case 32: intelScreen->fbFormat = DV_PF_8888; break;
  94    }
  95
  96    intelScreen->backOffset = gDRIPriv->backOffset;
  97    intelScreen->backPitch = gDRIPriv->backPitch;
  98    intelScreen->depthOffset = gDRIPriv->depthOffset;
  99    intelScreen->depthPitch = gDRIPriv->depthPitch;
 100    intelScreen->textureOffset = gDRIPriv->textureOffset;
 101    intelScreen->textureSize = gDRIPriv->textureSize;
 102    intelScreen->logTextureGranularity = gDRIPriv->logTextureGranularity;
 103    intelScreen->back.handle = gDRIPriv->backbuffer;
 104    intelScreen->back.size = gDRIPriv->backbufferSize;
 105
 106    if (drmMap(sPriv->fd,
 107               intelScreen->back.handle,
 108               intelScreen->back.size,
 109               (drmAddress *)&intelScreen->back.map) != 0) {
 110       fprintf(stderr, "\nERROR: line %d, Function %s, File %s\n",
 111               __LINE__, __FUNCTION__, __FILE__);
 112       FREE(intelScreen);
 113       sPriv->private = NULL;
 114       return GL_FALSE;
 115    }
 116
 117    intelScreen->depth.handle = gDRIPriv->depthbuffer;
 118    intelScreen->depth.size = gDRIPriv->depthbufferSize;
 119
 120    if (drmMap(sPriv->fd,
 121               intelScreen->depth.handle,
 122               intelScreen->depth.size,
 123               (drmAddress *)&intelScreen->depth.map) != 0) {
 124       fprintf(stderr, "\nERROR: line %d, Function %s, File %s\n",
 125               __LINE__, __FUNCTION__, __FILE__);
 126       FREE(intelScreen);
 127       drmUnmap(intelScreen->back.map, intelScreen->back.size);
 128       sPriv->private = NULL;
 129       return GL_FALSE;
 130    }
 131
 132    intelScreen->tex.handle = gDRIPriv->textures;
 133    intelScreen->tex.size = gDRIPriv->textureSize;
 134
 135    if (drmMap(sPriv->fd,
 136               intelScreen->tex.handle,
 137               intelScreen->tex.size,
 138               (drmAddress *)&intelScreen->tex.map) != 0) {
 139       fprintf(stderr, "\nERROR: line %d, Function %s, File %s\n",
 140               __LINE__, __FUNCTION__, __FILE__);
 141       FREE(intelScreen);
 142       drmUnmap(intelScreen->back.map, intelScreen->back.size);
 143       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 144       sPriv->private = NULL;
 145       return GL_FALSE;
 146    }
 147
 148    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 149
 150    if (0) intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 151
 152    intelScreen->drmMinor = sPriv->drmMinor;
 153
 154    {
 155       int ret;
 156       drmI830GetParam gp;
 157
 158       gp.param = I830_PARAM_IRQ_ACTIVE;
 159       gp.value = &intelScreen->irq_active;
 160
 161       ret = drmCommandWriteRead( sPriv->fd, DRM_I830_GETPARAM,
 162                                  &gp, sizeof(gp));
 163       if (ret) {
 164          fprintf(stderr, "drmI830GetParam: %d\n", ret);
 165          return GL_FALSE;
 166       }
 167    }
 168
 169    {
 170       int ret;
 171       drmI830GetParam gp;
 172
 173       gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
 174       gp.value = &intelScreen->allow_batchbuffer;
 175
 176       ret = drmCommandWriteRead( sPriv->fd, DRM_I830_GETPARAM,
 177                                  &gp, sizeof(gp));
 178       if (ret) {
 179          fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
 180          return GL_FALSE;
 181       }
 182    }
 183
 184 #ifndef _SOLO
 185    if ( driCompareGLXAPIVersion( 20030813 ) >= 0 ) {
 186       PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
 187           (PFNGLXSCRENABLEEXTENSIONPROC) glXGetProcAddress( (const GLubyte *) "__glXScrEnableExtension" );
 188       void * const psc = sPriv->psc->screenConfigs;
 189
 190       if (glx_enable_extension != NULL) {
 191          (*glx_enable_extension)( psc, "GLX_SGI_make_current_read" );
 192
 193          if ( driCompareGLXAPIVersion( 20030915 ) >= 0 ) {
 194             (*glx_enable_extension)( psc, "GLX_SGIX_fbconfig" );
 195             (*glx_enable_extension)( psc, "GLX_OML_swap_method" );
 196          }
 197
 198          if ( driCompareGLXAPIVersion( 20030818 ) >= 0 ) {
 199             sPriv->psc->allocateMemory = (void *) intelAllocateMemoryMESA;
 200             sPriv->psc->freeMemory     = (void *) intelFreeMemoryMESA;
 201             sPriv->psc->memoryOffset   = (void *) intelGetMemoryOffsetMESA;
 202
 203             (*glx_enable_extension)( psc, "GLX_MESA_allocate_memory" );
 204          }
 205       }
 206    }
 207 #endif
 208
 209    return GL_TRUE;
 210 }
 211
 212
 213 static void intelDestroyScreen(__DRIscreenPrivate *sPriv)
 214 {
 215    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 216
 217    /* Need to unmap all the bufs and maps here:
 218     */
 219    drmUnmap(intelScreen->back.map, intelScreen->back.size);
 220    drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 221    drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 222    FREE(intelScreen);
 223    sPriv->private = NULL;
 224 }
 225
 226 static GLboolean intelCreateBuffer( __DRIscreenPrivate *driScrnPriv,
 227                                     __DRIdrawablePrivate *driDrawPriv,
 228                                     const __GLcontextModes *mesaVis,
 229                                     GLboolean isPixmap )
 230 {
 231    if (isPixmap) {
 232       return GL_FALSE; /* not implemented */
 233    } else {
 234       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 235                              mesaVis->depthBits != 24);
 236
 237       driDrawPriv->driverPrivate = (void *)
 238          _mesa_create_framebuffer(mesaVis,
 239                                   GL_FALSE,  /* software depth buffer? */
 240                                   swStencil,
 241                                   mesaVis->accumRedBits > 0,
 242                                   GL_FALSE /* s/w alpha planes */);
 243
 244       return (driDrawPriv->driverPrivate != NULL);
 245    }
 246 }
 247
 248 static void intelDestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
 249 {
 250    _mesa_destroy_framebuffer((GLframebuffer *) (driDrawPriv->driverPrivate));
 251 }
 252
 253
 254 /* There are probably better ways to do this, such as an
 255  * init-designated function to register chipids and createcontext
 256  * functions.
 257  */
 258 extern GLboolean i830CreateContext( const __GLcontextModes *mesaVis,
 259                                     __DRIcontextPrivate *driContextPriv,
 260                                     void *sharedContextPrivate);
 261
 262 extern GLboolean i915CreateContext( const __GLcontextModes *mesaVis,
 263                                    __DRIcontextPrivate *driContextPriv,
 264                                    void *sharedContextPrivate);
 265
 266
 267
 268
 269 static GLboolean intelCreateContext( const __GLcontextModes *mesaVis,
 270                                    __DRIcontextPrivate *driContextPriv,
 271                                    void *sharedContextPrivate)
 272 {
 273    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 274    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 275
 276    switch (intelScreen->deviceID) {
 277    case PCI_CHIP_845_G:
 278    case PCI_CHIP_I830_M:
 279    case PCI_CHIP_I855_GM:
 280    case PCI_CHIP_I865_G:
 281       return i830CreateContext( mesaVis, driContextPriv,
 282                                 sharedContextPrivate );
 283
 284    case PCI_CHIP_I915_G:
 285       return i915CreateContext( mesaVis, driContextPriv,
 286                                sharedContextPrivate );
 287
 288    default:
 289       fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 290       return GL_FALSE;
 291    }
 292 }
 293
 294
 295 static const struct __DriverAPIRec intelAPI = {
 296    .InitDriver      = intelInitDriver,
 297    .DestroyScreen   = intelDestroyScreen,
 298    .CreateContext   = intelCreateContext,
 299    .DestroyContext  = intelDestroyContext,
 300    .CreateBuffer    = intelCreateBuffer,
 301    .DestroyBuffer   = intelDestroyBuffer,
 302    .SwapBuffers     = intelSwapBuffers,
 303    .MakeCurrent     = intelMakeCurrent,
 304    .UnbindContext   = intelUnbindContext,
 305    .GetSwapInfo     = NULL,
 306    .GetMSC          = NULL,
 307    .WaitForMSC      = NULL,
 308    .WaitForSBC      = NULL,
 309    .SwapBuffersMSC  = NULL
 310 };
 311
 312 /*
 313  * This is the bootstrap function for the driver.
 314  * The __driCreateScreen name is the symbol that libGL.so fetches.
 315  * Return:  pointer to a __DRIscreenPrivate.
 316  */
 317 #if !defined(DRI_NEW_INTERFACE_ONLY)
 318 #ifndef _SOLO
 319 void *__driCreateScreen(Display *dpy, int scrn, __DRIscreen *psc,
 320                         int numConfigs, __GLXvisualConfig *config)
 321 {
 322    __DRIscreenPrivate *psp;
 323    psp = __driUtilCreateScreen(dpy, scrn, psc, numConfigs, config, &intelAPI);
 324    return (void *) psp;
 325 }
 326 #else
 327 void *__driCreateScreen(struct DRIDriverRec *driver,
 328                         struct DRIDriverContextRec *driverContext)
 329 {
 330    __DRIscreenPrivate *psp;
 331    psp = __driUtilCreateScreen(driver, driverContext, &i830API);
 332    return (void *) psp;
 333 }
 334 #endif
 335 #endif /* !defined(DRI_NEW_INTERFACE_ONLY) */
 336
 337
 338 /* This function is called by libGL.so as soon as libGL.so is loaded.
 339  * This is where we'd register new extension functions with the dispatcher.
 340  *
 341  * Note: Most of these are probably already registered - just doing
 342  * this for the benefit of old libGL.so's out there.
 343  */
 344 #include "glapioffsets.h"
 345
 346 void __driRegisterExtensions( void )
 347 {
 348    int i;
 349    static struct { const char *name; int offset; } funcs[] = {
 350         { "glSecondaryColor3bEXT", _gloffset_SecondaryColor3bEXT },
 351         { "glSecondaryColor3dEXT", _gloffset_SecondaryColor3dEXT },
 352         { "glSecondaryColor3fEXT", _gloffset_SecondaryColor3fEXT },
 353         { "glSecondaryColor3iEXT", _gloffset_SecondaryColor3iEXT },
 354         { "glSecondaryColor3sEXT", _gloffset_SecondaryColor3sEXT },
 355         { "glSecondaryColor3ubEXT", _gloffset_SecondaryColor3ubEXT },
 356         { "glSecondaryColor3uiEXT", _gloffset_SecondaryColor3uiEXT },
 357         { "glSecondaryColor3usEXT", _gloffset_SecondaryColor3usEXT },
 358         { "glSecondaryColor3bvEXT", _gloffset_SecondaryColor3bvEXT },
 359         { "glSecondaryColor3dvEXT", _gloffset_SecondaryColor3dvEXT },
 360         { "glSecondaryColor3fvEXT", _gloffset_SecondaryColor3fvEXT },
 361         { "glSecondaryColor3ivEXT", _gloffset_SecondaryColor3ivEXT },
 362         { "glSecondaryColor3svEXT", _gloffset_SecondaryColor3svEXT },
 363         { "glSecondaryColor3ubvEXT", _gloffset_SecondaryColor3ubvEXT },
 364         { "glSecondaryColor3uivEXT", _gloffset_SecondaryColor3uivEXT },
 365         { "glSecondaryColor3usvEXT", _gloffset_SecondaryColor3usvEXT },
 366         { "glSecondaryColorPointerEXT", _gloffset_SecondaryColorPointerEXT }
 367    };
 368
 369    for (i = 0 ; i < sizeof(funcs) / sizeof(*funcs) ; i++ )
 370       _glapi_add_entrypoint( funcs[i].name, funcs[i].offset );
 371 }
 372
 373
 374 #ifdef USE_NEW_INTERFACE
 375 static __GLcontextModes * fill_in_modes( __GLcontextModes * modes,
 376                                          unsigned pixel_bits,
 377                                          unsigned depth_bits,
 378                                          unsigned stencil_bits,
 379                                          const GLenum * db_modes,
 380                                          unsigned num_db_modes,
 381                                          int visType )
 382 {
 383     static const uint8_t bits[2][4] = {
 384         {          5,          6,          5,          0 },
 385         {          8,          8,          8,          8 }
 386     };
 387
 388     static const uint32_t masks[2][4] = {
 389         { 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000 },
 390         { 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 }
 391     };
 392
 393     unsigned   i;
 394     unsigned   j;
 395     const unsigned index = ((pixel_bits + 15) / 16) - 1;
 396
 397     for ( i = 0 ; i < num_db_modes ; i++ ) {
 398         for ( j = 0 ; j < 2 ; j++ ) {
 399
 400             modes->redBits   = bits[index][0];
 401             modes->greenBits = bits[index][1];
 402             modes->blueBits  = bits[index][2];
 403             modes->alphaBits = bits[index][3];
 404             modes->redMask   = masks[index][0];
 405             modes->greenMask = masks[index][1];
 406             modes->blueMask  = masks[index][2];
 407             modes->alphaMask = masks[index][3];
 408             modes->rgbBits   = modes->redBits + modes->greenBits
 409                 + modes->blueBits + modes->alphaBits;
 410
 411             modes->accumRedBits   = 16 * j;
 412             modes->accumGreenBits = 16 * j;
 413             modes->accumBlueBits  = 16 * j;
 414             modes->accumAlphaBits = (masks[index][3] != 0) ? 16 * j : 0;
 415             modes->visualRating = (j == 0) ? GLX_NONE : GLX_SLOW_CONFIG;
 416
 417             modes->stencilBits = stencil_bits;
 418             modes->depthBits = depth_bits;
 419
 420             modes->visualType = visType;
 421             modes->renderType = GLX_RGBA_BIT;
 422             modes->drawableType = GLX_WINDOW_BIT;
 423             modes->rgbMode = GL_TRUE;
 424
 425             if ( db_modes[i] == GLX_NONE ) {
 426                 modes->doubleBufferMode = GL_FALSE;
 427             }
 428             else {
 429                 modes->doubleBufferMode = GL_TRUE;
 430                 modes->swapMethod = db_modes[i];
 431             }
 432
 433             modes = modes->next;
 434         }
 435     }
 436
 437     return modes;
 438 }
 439 #endif /* USE_NEW_INTERFACE */
 440
 441
 442 #ifdef USE_NEW_INTERFACE
 443 static __GLcontextModes *
 444 intelFillInModes( unsigned pixel_bits, unsigned depth_bits,
 445                  unsigned stencil_bits, GLboolean have_back_buffer )
 446 {
 447    __GLcontextModes * modes;
 448    __GLcontextModes * m;
 449    unsigned num_modes;
 450    unsigned depth_buffer_factor;
 451    unsigned back_buffer_factor;
 452    unsigned i;
 453
 454    /* GLX_SWAP_COPY_OML is only supported because the MGA driver doesn't
 455     * support pageflipping at all.
 456     */
 457    static const GLenum back_buffer_modes[] = {
 458       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 459    };
 460
 461    int depth_buffer_modes[2][2];
 462
 463
 464    depth_buffer_modes[0][0] = depth_bits;
 465    depth_buffer_modes[1][0] = depth_bits;
 466
 467    /* Just like with the accumulation buffer, always provide some modes
 468     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 469     * care about that.
 470     */
 471    depth_buffer_modes[0][1] = 0;
 472    depth_buffer_modes[1][1] = (stencil_bits == 0) ? 8 : stencil_bits;
 473
 474    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 2 : 1;
 475    back_buffer_factor  = (have_back_buffer) ? 3 : 1;
 476
 477    num_modes = depth_buffer_factor * back_buffer_factor * 4;
 478
 479    modes = (*create_context_modes)( num_modes, sizeof( __GLcontextModes ) );
 480    m = modes;
 481    for ( i = 0 ; i < depth_buffer_factor ; i++ ) {
 482       m = fill_in_modes( m, pixel_bits,
 483                          depth_buffer_modes[i][0], depth_buffer_modes[i][1],
 484                          back_buffer_modes, back_buffer_factor,
 485                          GLX_TRUE_COLOR );
 486    }
 487
 488    /* There's no direct color modes on intel? */
 489 #if 0
 490    for ( i = 0 ; i < depth_buffer_factor ; i++ ) {
 491       m = fill_in_modes( m, pixel_bits,
 492                          depth_buffer_modes[i][0], depth_buffer_modes[i][1],
 493                          back_buffer_modes, back_buffer_factor,
 494                          GLX_DIRECT_COLOR );
 495    }
 496 #endif
 497
 498    /* Mark the visual as slow if there are "fake" stencil bits.
 499     */
 500    for ( m = modes ; m != NULL ; m = m->next ) {
 501       if ( (m->stencilBits != 0) && (m->stencilBits != stencil_bits) ) {
 502          m->visualRating = GLX_SLOW_CONFIG;
 503       }
 504    }
 505
 506    return modes;
 507 }
 508 #endif /* USE_NEW_INTERFACE */
 509
 510
 511 /**
 512  * This is the bootstrap function for the driver.  libGL supplies all of the
 513  * requisite information about the system, and the driver initializes itself.
 514  * This routine also fills in the linked list pointed to by \c driver_modes
 515  * with the \c __GLcontextModes that the driver can support for windows or
 516  * pbuffers.
 517  *
 518  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
 519  *         failure.
 520  */
 521 #ifdef USE_NEW_INTERFACE
 522 void * __driCreateNewScreen( __DRInativeDisplay *dpy, int scrn, __DRIscreen *psc,
 523                              const __GLcontextModes * modes,
 524                              const __DRIversion * ddx_version,
 525                              const __DRIversion * dri_version,
 526                              const __DRIversion * drm_version,
 527                              const __DRIframebuffer * frame_buffer,
 528                              drmAddress pSAREA, int fd,
 529                              int internal_api_version,
 530                              __GLcontextModes ** driver_modes )
 531
 532 {
 533    __DRIscreenPrivate *psp;
 534    static const __DRIversion ddx_expected = { 1, 0, 0 };
 535    static const __DRIversion dri_expected = { 4, 0, 0 };
 536    static const __DRIversion drm_expected = { 1, 1, 0 };
 537
 538    if ( ! driCheckDriDdxDrmVersions2( "i915",
 539                                       dri_version, & dri_expected,
 540                                       ddx_version, & ddx_expected,
 541                                       drm_version, & drm_expected ) ) {
 542       return NULL;
 543    }
 544
 545    psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
 546                                   ddx_version, dri_version, drm_version,
 547                                   frame_buffer, pSAREA, fd,
 548                                   internal_api_version, &intelAPI);
 549    if ( psp != NULL ) {
 550       create_context_modes = (PFNGLXCREATECONTEXTMODES)
 551           glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" );
 552       if ( create_context_modes != NULL ) {
 553          I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 554          *driver_modes = intelFillInModes( dri_priv->cpp * 8,
 555                                            (dri_priv->cpp == 2) ? 16 : 24,
 556                                            (dri_priv->cpp == 2) ? 0  : 8,
 557                                            (dri_priv->backOffset != dri_priv->depthOffset) );
 558       }
 559    }
 560
 561    return (void *) psp;
 562 }
 563 #endif /* USE_NEW_INTERFACE */