src/gallium/state_trackers/egl/x11/native_dri2.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.8
   4  *
   5  * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #include "util/u_memory.h"
  27 #include "util/u_math.h"
  28 #include "util/u_format.h"
  29 #include "util/u_inlines.h"
  30 #include "util/u_hash_table.h"
  31 #include "pipe/p_compiler.h"
  32 #include "pipe/p_screen.h"
  33 #include "pipe/p_context.h"
  34 #include "pipe/p_state.h"
  35 #include "state_tracker/drm_api.h"
  36 #include "egllog.h"
  37
  38 #include "native_x11.h"
  39 #include "x11_screen.h"
  40
  41 enum dri2_surface_type {
  42    DRI2_SURFACE_TYPE_WINDOW,
  43    DRI2_SURFACE_TYPE_PIXMAP,
  44 };
  45
  46 struct dri2_display {
  47    struct native_display base;
  48    Display *dpy;
  49    boolean own_dpy;
  50
  51    struct native_event_handler *event_handler;
  52
  53    struct drm_api *api;
  54    struct x11_screen *xscr;
  55    int xscr_number;
  56    const char *dri_driver;
  57    int dri_major, dri_minor;
  58
  59    struct dri2_config *configs;
  60    int num_configs;
  61
  62    struct util_hash_table *surfaces;
  63 };
  64
  65 struct dri2_surface {
  66    struct native_surface base;
  67    Drawable drawable;
  68    enum dri2_surface_type type;
  69    enum pipe_format color_format;
  70    struct dri2_display *dri2dpy;
  71
  72    unsigned int server_stamp;
  73    unsigned int client_stamp;
  74    int width, height;
  75    struct pipe_resource *textures[NUM_NATIVE_ATTACHMENTS];
  76    uint valid_mask;
  77
  78    boolean have_back, have_fake;
  79
  80    struct x11_drawable_buffer *last_xbufs;
  81    int last_num_xbufs;
  82 };
  83
  84 struct dri2_config {
  85    struct native_config base;
  86 };
  87
  88 static INLINE struct dri2_display *
  89 dri2_display(const struct native_display *ndpy)
  90 {
  91    return (struct dri2_display *) ndpy;
  92 }
  93
  94 static INLINE struct dri2_surface *
  95 dri2_surface(const struct native_surface *nsurf)
  96 {
  97    return (struct dri2_surface *) nsurf;
  98 }
  99
 100 static INLINE struct dri2_config *
 101 dri2_config(const struct native_config *nconf)
 102 {
 103    return (struct dri2_config *) nconf;
 104 }
 105
 106 /**
 107  * Process the buffers returned by the server.
 108  */
 109 static void
 110 dri2_surface_process_drawable_buffers(struct native_surface *nsurf,
 111                                       struct x11_drawable_buffer *xbufs,
 112                                       int num_xbufs)
 113 {
 114    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 115    struct dri2_display *dri2dpy = dri2surf->dri2dpy;
 116    struct pipe_resource templ;
 117    struct winsys_handle whandle;
 118    uint valid_mask;
 119    int i;
 120
 121    /* free the old textures */
 122    for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++)
 123       pipe_resource_reference(&dri2surf->textures[i], NULL);
 124    dri2surf->valid_mask = 0x0;
 125
 126    dri2surf->have_back = FALSE;
 127    dri2surf->have_fake = FALSE;
 128
 129    if (!xbufs)
 130       return;
 131
 132    memset(&templ, 0, sizeof(templ));
 133    templ.target = PIPE_TEXTURE_2D;
 134    templ.last_level = 0;
 135    templ.width0 = dri2surf->width;
 136    templ.height0 = dri2surf->height;
 137    templ.depth0 = 1;
 138    templ.format = dri2surf->color_format;
 139    templ.bind = PIPE_BIND_RENDER_TARGET;
 140
 141    valid_mask = 0x0;
 142    for (i = 0; i < num_xbufs; i++) {
 143       struct x11_drawable_buffer *xbuf = &xbufs[i];
 144       const char *desc;
 145       enum native_attachment natt;
 146
 147       switch (xbuf->attachment) {
 148       case DRI2BufferFrontLeft:
 149          natt = NATIVE_ATTACHMENT_FRONT_LEFT;
 150          desc = "DRI2 Front Buffer";
 151          break;
 152       case DRI2BufferFakeFrontLeft:
 153          natt = NATIVE_ATTACHMENT_FRONT_LEFT;
 154          desc = "DRI2 Fake Front Buffer";
 155          dri2surf->have_fake = TRUE;
 156          break;
 157       case DRI2BufferBackLeft:
 158          natt = NATIVE_ATTACHMENT_BACK_LEFT;
 159          desc = "DRI2 Back Buffer";
 160          dri2surf->have_back = TRUE;
 161          break;
 162       default:
 163          desc = NULL;
 164          break;
 165       }
 166
 167       if (!desc || dri2surf->textures[natt]) {
 168          if (!desc)
 169             _eglLog(_EGL_WARNING, "unknown buffer %d", xbuf->attachment);
 170          else
 171             _eglLog(_EGL_WARNING, "both real and fake front buffers are listed");
 172          continue;
 173       }
 174
 175       memset(&whandle, 0, sizeof(whandle));
 176       whandle.stride = xbuf->pitch;
 177       whandle.handle = xbuf->name;
 178       dri2surf->textures[natt] = dri2dpy->base.screen->resource_from_handle(
 179          dri2dpy->base.screen, &templ, &whandle);
 180       if (dri2surf->textures[natt])
 181          valid_mask |= 1 << natt;
 182    }
 183
 184    dri2surf->valid_mask = valid_mask;
 185 }
 186
 187 /**
 188  * Get the buffers from the server.
 189  */
 190 static void
 191 dri2_surface_get_buffers(struct native_surface *nsurf, uint buffer_mask)
 192 {
 193    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 194    struct dri2_display *dri2dpy = dri2surf->dri2dpy;
 195    unsigned int dri2atts[NUM_NATIVE_ATTACHMENTS];
 196    int num_ins, num_outs, att;
 197    struct x11_drawable_buffer *xbufs;
 198
 199    /* prepare the attachments */
 200    num_ins = 0;
 201    for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
 202       if (native_attachment_mask_test(buffer_mask, att)) {
 203          unsigned int dri2att;
 204
 205          switch (att) {
 206          case NATIVE_ATTACHMENT_FRONT_LEFT:
 207             dri2att = DRI2BufferFrontLeft;
 208             break;
 209          case NATIVE_ATTACHMENT_BACK_LEFT:
 210             dri2att = DRI2BufferBackLeft;
 211             break;
 212          case NATIVE_ATTACHMENT_FRONT_RIGHT:
 213             dri2att = DRI2BufferFrontRight;
 214             break;
 215          case NATIVE_ATTACHMENT_BACK_RIGHT:
 216             dri2att = DRI2BufferBackRight;
 217             break;
 218          default:
 219             assert(0);
 220             dri2att = 0;
 221             break;
 222          }
 223
 224          dri2atts[num_ins] = dri2att;
 225          num_ins++;
 226       }
 227    }
 228
 229    xbufs = x11_drawable_get_buffers(dri2dpy->xscr, dri2surf->drawable,
 230                                     &dri2surf->width, &dri2surf->height,
 231                                     dri2atts, FALSE, num_ins, &num_outs);
 232
 233    /* we should be able to do better... */
 234    if (xbufs && dri2surf->last_num_xbufs == num_outs &&
 235        memcmp(dri2surf->last_xbufs, xbufs, sizeof(*xbufs) * num_outs) == 0) {
 236       free(xbufs);
 237       dri2surf->client_stamp = dri2surf->server_stamp;
 238       return;
 239    }
 240
 241    dri2_surface_process_drawable_buffers(&dri2surf->base, xbufs, num_outs);
 242
 243    dri2surf->server_stamp++;
 244    dri2surf->client_stamp = dri2surf->server_stamp;
 245
 246    if (dri2surf->last_xbufs)
 247       free(dri2surf->last_xbufs);
 248    dri2surf->last_xbufs = xbufs;
 249    dri2surf->last_num_xbufs = num_outs;
 250 }
 251
 252 /**
 253  * Update the buffers of the surface.  This is a slow function due to the
 254  * round-trip to the server.
 255  */
 256 static boolean
 257 dri2_surface_update_buffers(struct native_surface *nsurf, uint buffer_mask)
 258 {
 259    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 260
 261    dri2_surface_get_buffers(&dri2surf->base, buffer_mask);
 262
 263    return ((dri2surf->valid_mask & buffer_mask) == buffer_mask);
 264 }
 265
 266 /**
 267  * Return TRUE if the surface receives DRI2_InvalidateBuffers events.
 268  */
 269 static INLINE boolean
 270 dri2_surface_receive_events(struct native_surface *nsurf)
 271 {
 272    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 273    return (dri2surf->dri2dpy->dri_minor >= 3);
 274 }
 275
 276 static boolean
 277 dri2_surface_flush_frontbuffer(struct native_surface *nsurf)
 278 {
 279    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 280    struct dri2_display *dri2dpy = dri2surf->dri2dpy;
 281
 282    /* copy to real front buffer */
 283    if (dri2surf->have_fake)
 284       x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
 285             0, 0, dri2surf->width, dri2surf->height,
 286             DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 287
 288    /* force buffers to be updated in next validation call */
 289    if (!dri2_surface_receive_events(&dri2surf->base)) {
 290       dri2surf->server_stamp++;
 291       dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
 292             &dri2surf->base, dri2surf->server_stamp);
 293    }
 294
 295    return TRUE;
 296 }
 297
 298 static boolean
 299 dri2_surface_swap_buffers(struct native_surface *nsurf)
 300 {
 301    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 302    struct dri2_display *dri2dpy = dri2surf->dri2dpy;
 303
 304    /* copy to front buffer */
 305    if (dri2surf->have_back)
 306       x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
 307             0, 0, dri2surf->width, dri2surf->height,
 308             DRI2BufferBackLeft, DRI2BufferFrontLeft);
 309
 310    /* and update fake front buffer */
 311    if (dri2surf->have_fake)
 312       x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
 313             0, 0, dri2surf->width, dri2surf->height,
 314             DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 315
 316    /* force buffers to be updated in next validation call */
 317    if (!dri2_surface_receive_events(&dri2surf->base)) {
 318       dri2surf->server_stamp++;
 319       dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
 320             &dri2surf->base, dri2surf->server_stamp);
 321    }
 322
 323    return TRUE;
 324 }
 325
 326 static boolean
 327 dri2_surface_validate(struct native_surface *nsurf, uint attachment_mask,
 328                       unsigned int *seq_num, struct pipe_resource **textures,
 329                       int *width, int *height)
 330 {
 331    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 332
 333    if (dri2surf->server_stamp != dri2surf->client_stamp ||
 334        (dri2surf->valid_mask & attachment_mask) != attachment_mask) {
 335       if (!dri2_surface_update_buffers(&dri2surf->base, attachment_mask))
 336          return FALSE;
 337    }
 338
 339    if (seq_num)
 340       *seq_num = dri2surf->client_stamp;
 341
 342    if (textures) {
 343       int att;
 344       for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
 345          if (native_attachment_mask_test(attachment_mask, att)) {
 346             struct pipe_resource *ptex = dri2surf->textures[att];
 347
 348             textures[att] = NULL;
 349             pipe_resource_reference(&textures[att], ptex);
 350          }
 351       }
 352    }
 353
 354    if (width)
 355       *width = dri2surf->width;
 356    if (height)
 357       *height = dri2surf->height;
 358
 359    return TRUE;
 360 }
 361
 362 static void
 363 dri2_surface_wait(struct native_surface *nsurf)
 364 {
 365    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 366    struct dri2_display *dri2dpy = dri2surf->dri2dpy;
 367
 368    if (dri2surf->have_fake) {
 369       x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
 370             0, 0, dri2surf->width, dri2surf->height,
 371             DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 372    }
 373 }
 374
 375 static void
 376 dri2_surface_destroy(struct native_surface *nsurf)
 377 {
 378    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 379    int i;
 380
 381    if (dri2surf->last_xbufs)
 382       free(dri2surf->last_xbufs);
 383
 384    for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
 385       struct pipe_resource *ptex = dri2surf->textures[i];
 386       pipe_resource_reference(&ptex, NULL);
 387    }
 388
 389    if (dri2surf->drawable) {
 390       x11_drawable_enable_dri2(dri2surf->dri2dpy->xscr,
 391             dri2surf->drawable, FALSE);
 392
 393       util_hash_table_remove(dri2surf->dri2dpy->surfaces,
 394             (void *) dri2surf->drawable);
 395    }
 396    free(dri2surf);
 397 }
 398
 399 static struct dri2_surface *
 400 dri2_display_create_surface(struct native_display *ndpy,
 401                             enum dri2_surface_type type,
 402                             Drawable drawable,
 403                             const struct native_config *nconf)
 404 {
 405    struct dri2_display *dri2dpy = dri2_display(ndpy);
 406    struct dri2_config *dri2conf = dri2_config(nconf);
 407    struct dri2_surface *dri2surf;
 408
 409    dri2surf = CALLOC_STRUCT(dri2_surface);
 410    if (!dri2surf)
 411       return NULL;
 412
 413    dri2surf->dri2dpy = dri2dpy;
 414    dri2surf->type = type;
 415    dri2surf->drawable = drawable;
 416    dri2surf->color_format = dri2conf->base.color_format;
 417
 418    dri2surf->base.destroy = dri2_surface_destroy;
 419    dri2surf->base.swap_buffers = dri2_surface_swap_buffers;
 420    dri2surf->base.flush_frontbuffer = dri2_surface_flush_frontbuffer;
 421    dri2surf->base.validate = dri2_surface_validate;
 422    dri2surf->base.wait = dri2_surface_wait;
 423
 424    if (drawable) {
 425       x11_drawable_enable_dri2(dri2dpy->xscr, drawable, TRUE);
 426       /* initialize the geometry */
 427       dri2_surface_update_buffers(&dri2surf->base, 0x0);
 428
 429       util_hash_table_set(dri2surf->dri2dpy->surfaces,
 430             (void *) dri2surf->drawable, (void *) &dri2surf->base);
 431    }
 432
 433    return dri2surf;
 434 }
 435
 436 static struct native_surface *
 437 dri2_display_create_window_surface(struct native_display *ndpy,
 438                                    EGLNativeWindowType win,
 439                                    const struct native_config *nconf)
 440 {
 441    struct dri2_surface *dri2surf;
 442
 443    dri2surf = dri2_display_create_surface(ndpy, DRI2_SURFACE_TYPE_WINDOW,
 444          (Drawable) win, nconf);
 445    return (dri2surf) ? &dri2surf->base : NULL;
 446 }
 447
 448 static struct native_surface *
 449 dri2_display_create_pixmap_surface(struct native_display *ndpy,
 450                                    EGLNativePixmapType pix,
 451                                    const struct native_config *nconf)
 452 {
 453    struct dri2_surface *dri2surf;
 454
 455    dri2surf = dri2_display_create_surface(ndpy, DRI2_SURFACE_TYPE_PIXMAP,
 456          (Drawable) pix, nconf);
 457    return (dri2surf) ? &dri2surf->base : NULL;
 458 }
 459
 460 static int
 461 choose_color_format(const __GLcontextModes *mode, enum pipe_format formats[32])
 462 {
 463    int count = 0;
 464
 465    switch (mode->rgbBits) {
 466    case 32:
 467       formats[count++] = PIPE_FORMAT_B8G8R8A8_UNORM;
 468       formats[count++] = PIPE_FORMAT_A8R8G8B8_UNORM;
 469       break;
 470    case 24:
 471       formats[count++] = PIPE_FORMAT_B8G8R8X8_UNORM;
 472       formats[count++] = PIPE_FORMAT_X8R8G8B8_UNORM;
 473       formats[count++] = PIPE_FORMAT_B8G8R8A8_UNORM;
 474       formats[count++] = PIPE_FORMAT_A8R8G8B8_UNORM;
 475       break;
 476    case 16:
 477       formats[count++] = PIPE_FORMAT_B5G6R5_UNORM;
 478       break;
 479    default:
 480       break;
 481    }
 482
 483    return count;
 484 }
 485
 486 static int
 487 choose_depth_stencil_format(const __GLcontextModes *mode,
 488                             enum pipe_format formats[32])
 489 {
 490    int count = 0;
 491
 492    switch (mode->depthBits) {
 493    case 32:
 494       formats[count++] = PIPE_FORMAT_Z32_UNORM;
 495       break;
 496    case 24:
 497       if (mode->stencilBits) {
 498          formats[count++] = PIPE_FORMAT_Z24_UNORM_S8_USCALED;
 499          formats[count++] = PIPE_FORMAT_S8_USCALED_Z24_UNORM;
 500       }
 501       else {
 502          formats[count++] = PIPE_FORMAT_Z24X8_UNORM;
 503          formats[count++] = PIPE_FORMAT_X8Z24_UNORM;
 504       }
 505       break;
 506    case 16:
 507       formats[count++] = PIPE_FORMAT_Z16_UNORM;
 508       break;
 509    default:
 510       break;
 511    }
 512
 513    return count;
 514 }
 515
 516 static boolean
 517 is_format_supported(struct pipe_screen *screen,
 518                     enum pipe_format fmt, boolean is_color)
 519 {
 520    return screen->is_format_supported(screen, fmt, PIPE_TEXTURE_2D,
 521          (is_color) ? PIPE_BIND_RENDER_TARGET :
 522          PIPE_BIND_DEPTH_STENCIL, 0);
 523 }
 524
 525 static boolean
 526 dri2_display_convert_config(struct native_display *ndpy,
 527                             const __GLcontextModes *mode,
 528                             struct native_config *nconf)
 529 {
 530    enum pipe_format formats[32];
 531    int num_formats, i;
 532
 533    if (!(mode->renderType & GLX_RGBA_BIT) || !mode->rgbMode)
 534       return FALSE;
 535
 536    /* skip single-buffered configs */
 537    if (!mode->doubleBufferMode)
 538       return FALSE;
 539
 540    nconf->mode = *mode;
 541    nconf->mode.renderType = GLX_RGBA_BIT;
 542    nconf->mode.rgbMode = TRUE;
 543    /* pbuffer is always supported */
 544    nconf->mode.drawableType |= GLX_PBUFFER_BIT;
 545    /* the swap method is always copy */
 546    nconf->mode.swapMethod = GLX_SWAP_COPY_OML;
 547
 548    /* fix up */
 549    nconf->mode.rgbBits =
 550       nconf->mode.redBits + nconf->mode.greenBits +
 551       nconf->mode.blueBits + nconf->mode.alphaBits;
 552    if (!(nconf->mode.drawableType & GLX_WINDOW_BIT)) {
 553       nconf->mode.visualID = 0;
 554       nconf->mode.visualType = GLX_NONE;
 555    }
 556    if (!(nconf->mode.drawableType & GLX_PBUFFER_BIT)) {
 557       nconf->mode.bindToTextureRgb = FALSE;
 558       nconf->mode.bindToTextureRgba = FALSE;
 559    }
 560
 561    nconf->color_format = PIPE_FORMAT_NONE;
 562    nconf->depth_format = PIPE_FORMAT_NONE;
 563    nconf->stencil_format = PIPE_FORMAT_NONE;
 564
 565    /* choose color format */
 566    num_formats = choose_color_format(mode, formats);
 567    for (i = 0; i < num_formats; i++) {
 568       if (is_format_supported(ndpy->screen, formats[i], TRUE)) {
 569          nconf->color_format = formats[i];
 570          break;
 571       }
 572    }
 573    if (nconf->color_format == PIPE_FORMAT_NONE)
 574       return FALSE;
 575
 576    /* choose depth/stencil format */
 577    num_formats = choose_depth_stencil_format(mode, formats);
 578    for (i = 0; i < num_formats; i++) {
 579       if (is_format_supported(ndpy->screen, formats[i], FALSE)) {
 580          nconf->depth_format = formats[i];
 581          nconf->stencil_format = formats[i];
 582          break;
 583       }
 584    }
 585    if ((nconf->mode.depthBits && nconf->depth_format == PIPE_FORMAT_NONE) ||
 586        (nconf->mode.stencilBits && nconf->stencil_format == PIPE_FORMAT_NONE))
 587       return FALSE;
 588
 589    return TRUE;
 590 }
 591
 592 static const struct native_config **
 593 dri2_display_get_configs(struct native_display *ndpy, int *num_configs)
 594 {
 595    struct dri2_display *dri2dpy = dri2_display(ndpy);
 596    const struct native_config **configs;
 597    int i;
 598
 599    /* first time */
 600    if (!dri2dpy->configs) {
 601       const __GLcontextModes *modes;
 602       int num_modes, count;
 603
 604       modes = x11_screen_get_glx_configs(dri2dpy->xscr);
 605       if (!modes)
 606          return NULL;
 607       num_modes = x11_context_modes_count(modes);
 608
 609       dri2dpy->configs = calloc(num_modes, sizeof(*dri2dpy->configs));
 610       if (!dri2dpy->configs)
 611          return NULL;
 612
 613       count = 0;
 614       for (i = 0; i < num_modes; i++) {
 615          struct native_config *nconf = &dri2dpy->configs[count].base;
 616          if (dri2_display_convert_config(&dri2dpy->base, modes, nconf))
 617             count++;
 618          modes = modes->next;
 619       }
 620
 621       dri2dpy->num_configs = count;
 622    }
 623
 624    configs = malloc(dri2dpy->num_configs * sizeof(*configs));
 625    if (configs) {
 626       for (i = 0; i < dri2dpy->num_configs; i++)
 627          configs[i] = (const struct native_config *) &dri2dpy->configs[i];
 628       if (num_configs)
 629          *num_configs = dri2dpy->num_configs;
 630    }
 631
 632    return configs;
 633 }
 634
 635 static boolean
 636 dri2_display_is_pixmap_supported(struct native_display *ndpy,
 637                                  EGLNativePixmapType pix,
 638                                  const struct native_config *nconf)
 639 {
 640    struct dri2_display *dri2dpy = dri2_display(ndpy);
 641    uint depth, nconf_depth;
 642
 643    depth = x11_drawable_get_depth(dri2dpy->xscr, (Drawable) pix);
 644    nconf_depth = util_format_get_blocksizebits(nconf->color_format);
 645
 646    /* simple depth match for now */
 647    return (depth == nconf_depth || (depth == 24 && depth + 8 == nconf_depth));
 648 }
 649
 650 static int
 651 dri2_display_get_param(struct native_display *ndpy,
 652                        enum native_param_type param)
 653 {
 654    int val;
 655
 656    switch (param) {
 657    case NATIVE_PARAM_USE_NATIVE_BUFFER:
 658       /* DRI2GetBuffers use the native buffers */
 659       val = TRUE;
 660       break;
 661    default:
 662       val = 0;
 663       break;
 664    }
 665
 666    return val;
 667 }
 668
 669 static void
 670 dri2_display_destroy(struct native_display *ndpy)
 671 {
 672    struct dri2_display *dri2dpy = dri2_display(ndpy);
 673
 674    if (dri2dpy->configs)
 675       free(dri2dpy->configs);
 676
 677    if (dri2dpy->base.screen)
 678       dri2dpy->base.screen->destroy(dri2dpy->base.screen);
 679
 680    if (dri2dpy->surfaces)
 681       util_hash_table_destroy(dri2dpy->surfaces);
 682
 683    if (dri2dpy->xscr)
 684       x11_screen_destroy(dri2dpy->xscr);
 685    if (dri2dpy->own_dpy)
 686       XCloseDisplay(dri2dpy->dpy);
 687    if (dri2dpy->api && dri2dpy->api->destroy)
 688       dri2dpy->api->destroy(dri2dpy->api);
 689    free(dri2dpy);
 690 }
 691
 692 static void
 693 dri2_display_invalidate_buffers(struct x11_screen *xscr, Drawable drawable,
 694                                 void *user_data)
 695 {
 696    struct native_display *ndpy = (struct native_display* ) user_data;
 697    struct dri2_display *dri2dpy = dri2_display(ndpy);
 698    struct native_surface *nsurf;
 699    struct dri2_surface *dri2surf;
 700
 701    nsurf = (struct native_surface *)
 702       util_hash_table_get(dri2dpy->surfaces, (void *) drawable);
 703    if (!nsurf)
 704       return;
 705
 706    dri2surf = dri2_surface(nsurf);
 707
 708    dri2surf->server_stamp++;
 709    dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
 710          &dri2surf->base, dri2surf->server_stamp);
 711 }
 712
 713 /**
 714  * Initialize DRI2 and pipe screen.
 715  */
 716 static boolean
 717 dri2_display_init_screen(struct native_display *ndpy)
 718 {
 719    struct dri2_display *dri2dpy = dri2_display(ndpy);
 720    const char *driver = dri2dpy->api->name;
 721    struct drm_create_screen_arg arg;
 722    int fd;
 723
 724    if (!x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_DRI2) ||
 725        !x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_GLX)) {
 726       _eglLog(_EGL_WARNING, "GLX/DRI2 is not supported");
 727       return FALSE;
 728    }
 729
 730    dri2dpy->dri_driver = x11_screen_probe_dri2(dri2dpy->xscr,
 731          &dri2dpy->dri_major, &dri2dpy->dri_minor);
 732    if (!dri2dpy->dri_driver || !driver ||
 733        strcmp(dri2dpy->dri_driver, driver) != 0) {
 734       _eglLog(_EGL_WARNING, "Driver mismatch: %s != %s",
 735             dri2dpy->dri_driver, dri2dpy->api->name);
 736       return FALSE;
 737    }
 738
 739    fd = x11_screen_enable_dri2(dri2dpy->xscr,
 740          dri2_display_invalidate_buffers, &dri2dpy->base);
 741    if (fd < 0)
 742       return FALSE;
 743
 744    memset(&arg, 0, sizeof(arg));
 745    arg.mode = DRM_CREATE_NORMAL;
 746    dri2dpy->base.screen = dri2dpy->api->create_screen(dri2dpy->api, fd, &arg);
 747    if (!dri2dpy->base.screen) {
 748       _eglLog(_EGL_WARNING, "failed to create DRM screen");
 749       return FALSE;
 750    }
 751
 752    return TRUE;
 753 }
 754
 755 static unsigned
 756 dri2_display_hash_table_hash(void *key)
 757 {
 758    XID drawable = pointer_to_uintptr(key);
 759    return (unsigned) drawable;
 760 }
 761
 762 static int
 763 dri2_display_hash_table_compare(void *key1, void *key2)
 764 {
 765    return (key1 - key2);
 766 }
 767
 768 struct native_display *
 769 x11_create_dri2_display(EGLNativeDisplayType dpy,
 770                         struct native_event_handler *event_handler,
 771                         struct drm_api *api)
 772 {
 773    struct dri2_display *dri2dpy;
 774
 775    dri2dpy = CALLOC_STRUCT(dri2_display);
 776    if (!dri2dpy)
 777       return NULL;
 778
 779    dri2dpy->event_handler = event_handler;
 780    dri2dpy->api = api;
 781
 782    dri2dpy->dpy = dpy;
 783    if (!dri2dpy->dpy) {
 784       dri2dpy->dpy = XOpenDisplay(NULL);
 785       if (!dri2dpy->dpy) {
 786          dri2_display_destroy(&dri2dpy->base);
 787          return NULL;
 788       }
 789       dri2dpy->own_dpy = TRUE;
 790    }
 791
 792    dri2dpy->xscr_number = DefaultScreen(dri2dpy->dpy);
 793    dri2dpy->xscr = x11_screen_create(dri2dpy->dpy, dri2dpy->xscr_number);
 794    if (!dri2dpy->xscr) {
 795       dri2_display_destroy(&dri2dpy->base);
 796       return NULL;
 797    }
 798
 799    if (!dri2_display_init_screen(&dri2dpy->base)) {
 800       dri2_display_destroy(&dri2dpy->base);
 801       return NULL;
 802    }
 803
 804    dri2dpy->surfaces = util_hash_table_create(dri2_display_hash_table_hash,
 805          dri2_display_hash_table_compare);
 806    if (!dri2dpy->surfaces) {
 807       dri2_display_destroy(&dri2dpy->base);
 808       return NULL;
 809    }
 810
 811    dri2dpy->base.destroy = dri2_display_destroy;
 812    dri2dpy->base.get_param = dri2_display_get_param;
 813    dri2dpy->base.get_configs = dri2_display_get_configs;
 814    dri2dpy->base.is_pixmap_supported = dri2_display_is_pixmap_supported;
 815    dri2dpy->base.create_window_surface = dri2_display_create_window_surface;
 816    dri2dpy->base.create_pixmap_surface = dri2_display_create_pixmap_surface;
 817
 818    return &dri2dpy->base;
 819 }