src/gallium/state_trackers/dri/dri2.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright 2009, VMware, Inc.
   5  * All Rights Reserved.
   6  * Copyright (C) 2010 LunarG Inc.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions 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 MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  * OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Keith Whitwell <keithw@vmware.com> Jakob Bornecrantz
  28  *    <wallbraker@gmail.com> Chia-I Wu <olv@lunarg.com>
  29  */
  30
  31 #include <xf86drm.h>
  32 #include <fcntl.h>
  33 #include "GL/mesa_glinterop.h"
  34 #include "util/u_memory.h"
  35 #include "util/u_inlines.h"
  36 #include "util/u_format.h"
  37 #include "util/u_debug.h"
  38 #include "state_tracker/drm_driver.h"
  39 #include "state_tracker/st_cb_bufferobjects.h"
  40 #include "state_tracker/st_cb_fbo.h"
  41 #include "state_tracker/st_cb_texture.h"
  42 #include "state_tracker/st_texture.h"
  43 #include "state_tracker/st_context.h"
  44 #include "pipe-loader/pipe_loader.h"
  45 #include "main/bufferobj.h"
  46 #include "main/texobj.h"
  47
  48 #include "dri_helpers.h"
  49 #include "dri_drawable.h"
  50 #include "dri_query_renderer.h"
  51 #include "dri2_buffer.h"
  52
  53 #ifndef DRM_FORMAT_MOD_INVALID
  54 #define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
  55 #endif
  56
  57 static const int fourcc_formats[] = {
  58    __DRI_IMAGE_FOURCC_ARGB2101010,
  59    __DRI_IMAGE_FOURCC_XRGB2101010,
  60    __DRI_IMAGE_FOURCC_ABGR2101010,
  61    __DRI_IMAGE_FOURCC_XBGR2101010,
  62    __DRI_IMAGE_FOURCC_ARGB8888,
  63    __DRI_IMAGE_FOURCC_ABGR8888,
  64    __DRI_IMAGE_FOURCC_SARGB8888,
  65    __DRI_IMAGE_FOURCC_XRGB8888,
  66    __DRI_IMAGE_FOURCC_XBGR8888,
  67    __DRI_IMAGE_FOURCC_ARGB1555,
  68    __DRI_IMAGE_FOURCC_RGB565,
  69    __DRI_IMAGE_FOURCC_R8,
  70    __DRI_IMAGE_FOURCC_R16,
  71    __DRI_IMAGE_FOURCC_GR88,
  72    __DRI_IMAGE_FOURCC_GR1616,
  73    __DRI_IMAGE_FOURCC_YUV410,
  74    __DRI_IMAGE_FOURCC_YUV411,
  75    __DRI_IMAGE_FOURCC_YUV420,
  76    __DRI_IMAGE_FOURCC_YUV422,
  77    __DRI_IMAGE_FOURCC_YUV444,
  78    __DRI_IMAGE_FOURCC_YVU410,
  79    __DRI_IMAGE_FOURCC_YVU411,
  80    __DRI_IMAGE_FOURCC_YVU420,
  81    __DRI_IMAGE_FOURCC_YVU422,
  82    __DRI_IMAGE_FOURCC_YVU444,
  83    __DRI_IMAGE_FOURCC_NV12,
  84    __DRI_IMAGE_FOURCC_NV16,
  85    __DRI_IMAGE_FOURCC_YUYV
  86 };
  87
  88 static int convert_fourcc(int format, int *dri_components_p)
  89 {
  90    int dri_components;
  91    switch(format) {
  92    case __DRI_IMAGE_FOURCC_RGB565:
  93       format = __DRI_IMAGE_FORMAT_RGB565;
  94       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
  95       break;
  96    case __DRI_IMAGE_FOURCC_ARGB8888:
  97       format = __DRI_IMAGE_FORMAT_ARGB8888;
  98       dri_components = __DRI_IMAGE_COMPONENTS_RGBA;
  99       break;
 100    case __DRI_IMAGE_FOURCC_XRGB8888:
 101       format = __DRI_IMAGE_FORMAT_XRGB8888;
 102       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
 103       break;
 104    case __DRI_IMAGE_FOURCC_ABGR8888:
 105       format = __DRI_IMAGE_FORMAT_ABGR8888;
 106       dri_components = __DRI_IMAGE_COMPONENTS_RGBA;
 107       break;
 108    case __DRI_IMAGE_FOURCC_XBGR8888:
 109       format = __DRI_IMAGE_FORMAT_XBGR8888;
 110       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
 111       break;
 112    case __DRI_IMAGE_FOURCC_ARGB2101010:
 113       format = __DRI_IMAGE_FORMAT_ARGB2101010;
 114       dri_components = __DRI_IMAGE_COMPONENTS_RGBA;
 115       break;
 116    case __DRI_IMAGE_FOURCC_XRGB2101010:
 117       format = __DRI_IMAGE_FORMAT_XRGB2101010;
 118       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
 119       break;
 120    case __DRI_IMAGE_FOURCC_ABGR2101010:
 121       format = __DRI_IMAGE_FORMAT_ABGR2101010;
 122       dri_components = __DRI_IMAGE_COMPONENTS_RGBA;
 123       break;
 124    case __DRI_IMAGE_FOURCC_XBGR2101010:
 125       format = __DRI_IMAGE_FORMAT_XBGR2101010;
 126       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
 127       break;
 128    case __DRI_IMAGE_FOURCC_R8:
 129       format = __DRI_IMAGE_FORMAT_R8;
 130       dri_components = __DRI_IMAGE_COMPONENTS_R;
 131       break;
 132    case __DRI_IMAGE_FOURCC_GR88:
 133       format = __DRI_IMAGE_FORMAT_GR88;
 134       dri_components = __DRI_IMAGE_COMPONENTS_RG;
 135       break;
 136    case __DRI_IMAGE_FOURCC_R16:
 137       format = __DRI_IMAGE_FORMAT_R16;
 138       dri_components = __DRI_IMAGE_COMPONENTS_R;
 139       break;
 140    case __DRI_IMAGE_FOURCC_GR1616:
 141       format = __DRI_IMAGE_FORMAT_GR1616;
 142       dri_components = __DRI_IMAGE_COMPONENTS_RG;
 143       break;
 144    case __DRI_IMAGE_FOURCC_YUYV:
 145       format = __DRI_IMAGE_FORMAT_YUYV;
 146       dri_components = __DRI_IMAGE_COMPONENTS_Y_XUXV;
 147       break;
 148    /*
 149     * For multi-planar YUV formats, we return the format of the first
 150     * plane only.  Since there is only one caller which supports multi-
 151     * planar YUV it gets to figure out the remaining planes on it's
 152     * own.
 153     */
 154    case __DRI_IMAGE_FOURCC_YUV420:
 155    case __DRI_IMAGE_FOURCC_YVU420:
 156       format = __DRI_IMAGE_FORMAT_R8;
 157       dri_components = __DRI_IMAGE_COMPONENTS_Y_U_V;
 158       break;
 159    case __DRI_IMAGE_FOURCC_NV12:
 160       format = __DRI_IMAGE_FORMAT_R8;
 161       dri_components = __DRI_IMAGE_COMPONENTS_Y_UV;
 162       break;
 163    default:
 164       return -1;
 165    }
 166    *dri_components_p = dri_components;
 167    return format;
 168 }
 169
 170 /* NOTE this probably isn't going to do the right thing for YUV images
 171  * (but I think the same can be said for intel_query_image()).  I think
 172  * only needed for exporting dmabuf's, so I think I won't loose much
 173  * sleep over it.
 174  */
 175 static int convert_to_fourcc(int format)
 176 {
 177    switch(format) {
 178    case __DRI_IMAGE_FORMAT_RGB565:
 179       format = __DRI_IMAGE_FOURCC_RGB565;
 180       break;
 181    case __DRI_IMAGE_FORMAT_ARGB8888:
 182       format = __DRI_IMAGE_FOURCC_ARGB8888;
 183       break;
 184    case __DRI_IMAGE_FORMAT_XRGB8888:
 185       format = __DRI_IMAGE_FOURCC_XRGB8888;
 186       break;
 187    case __DRI_IMAGE_FORMAT_ABGR8888:
 188       format = __DRI_IMAGE_FOURCC_ABGR8888;
 189       break;
 190    case __DRI_IMAGE_FORMAT_XBGR8888:
 191       format = __DRI_IMAGE_FOURCC_XBGR8888;
 192       break;
 193    case __DRI_IMAGE_FORMAT_ARGB2101010:
 194       format = __DRI_IMAGE_FOURCC_ARGB2101010;
 195       break;
 196    case __DRI_IMAGE_FORMAT_XRGB2101010:
 197       format = __DRI_IMAGE_FOURCC_XRGB2101010;
 198       break;
 199    case __DRI_IMAGE_FORMAT_ABGR2101010:
 200       format = __DRI_IMAGE_FOURCC_ABGR2101010;
 201       break;
 202    case __DRI_IMAGE_FORMAT_XBGR2101010:
 203       format = __DRI_IMAGE_FOURCC_XBGR2101010;
 204       break;
 205    case __DRI_IMAGE_FORMAT_R8:
 206       format = __DRI_IMAGE_FOURCC_R8;
 207       break;
 208    case __DRI_IMAGE_FORMAT_GR88:
 209       format = __DRI_IMAGE_FOURCC_GR88;
 210       break;
 211    default:
 212       return -1;
 213    }
 214    return format;
 215 }
 216
 217 static enum pipe_format dri2_format_to_pipe_format (int format)
 218 {
 219    enum pipe_format pf;
 220
 221    switch (format) {
 222    case __DRI_IMAGE_FORMAT_RGB565:
 223       pf = PIPE_FORMAT_B5G6R5_UNORM;
 224       break;
 225    case __DRI_IMAGE_FORMAT_XRGB8888:
 226       pf = PIPE_FORMAT_BGRX8888_UNORM;
 227       break;
 228    case __DRI_IMAGE_FORMAT_ARGB8888:
 229       pf = PIPE_FORMAT_BGRA8888_UNORM;
 230       break;
 231    case __DRI_IMAGE_FORMAT_XBGR8888:
 232       pf = PIPE_FORMAT_RGBX8888_UNORM;
 233       break;
 234    case __DRI_IMAGE_FORMAT_ABGR8888:
 235       pf = PIPE_FORMAT_RGBA8888_UNORM;
 236       break;
 237    case __DRI_IMAGE_FORMAT_XRGB2101010:
 238       pf = PIPE_FORMAT_B10G10R10X2_UNORM;
 239       break;
 240    case __DRI_IMAGE_FORMAT_ARGB2101010:
 241       pf = PIPE_FORMAT_B10G10R10A2_UNORM;
 242       break;
 243    case __DRI_IMAGE_FORMAT_XBGR2101010:
 244       pf = PIPE_FORMAT_R10G10B10X2_UNORM;
 245       break;
 246    case __DRI_IMAGE_FORMAT_ABGR2101010:
 247       pf = PIPE_FORMAT_R10G10B10A2_UNORM;
 248       break;
 249    case __DRI_IMAGE_FORMAT_R8:
 250       pf = PIPE_FORMAT_R8_UNORM;
 251       break;
 252    case __DRI_IMAGE_FORMAT_GR88:
 253       pf = PIPE_FORMAT_RG88_UNORM;
 254       break;
 255    case __DRI_IMAGE_FORMAT_R16:
 256       pf = PIPE_FORMAT_R16_UNORM;
 257       break;
 258    case __DRI_IMAGE_FORMAT_GR1616:
 259       pf = PIPE_FORMAT_R16G16_UNORM;
 260       break;
 261    case __DRI_IMAGE_FORMAT_YUYV:
 262       pf = PIPE_FORMAT_YUYV;
 263       break;
 264    default:
 265       pf = PIPE_FORMAT_NONE;
 266       break;
 267    }
 268
 269    return pf;
 270 }
 271
 272 static enum pipe_format fourcc_to_pipe_format(int fourcc)
 273 {
 274    enum pipe_format pf;
 275
 276    switch (fourcc) {
 277    case __DRI_IMAGE_FOURCC_R8:
 278       pf = PIPE_FORMAT_R8_UNORM;
 279       break;
 280    case __DRI_IMAGE_FOURCC_GR88:
 281       pf = PIPE_FORMAT_RG88_UNORM;
 282       break;
 283    case __DRI_IMAGE_FOURCC_ARGB1555:
 284       pf = PIPE_FORMAT_B5G5R5A1_UNORM;
 285       break;
 286    case __DRI_IMAGE_FOURCC_R16:
 287       pf = PIPE_FORMAT_R16_UNORM;
 288       break;
 289    case __DRI_IMAGE_FOURCC_GR1616:
 290       pf = PIPE_FORMAT_RG1616_UNORM;
 291       break;
 292    case __DRI_IMAGE_FOURCC_RGB565:
 293       pf = PIPE_FORMAT_B5G6R5_UNORM;
 294       break;
 295    case __DRI_IMAGE_FOURCC_ARGB8888:
 296       pf = PIPE_FORMAT_BGRA8888_UNORM;
 297       break;
 298    case __DRI_IMAGE_FOURCC_XRGB8888:
 299       pf = PIPE_FORMAT_BGRX8888_UNORM;
 300       break;
 301    case __DRI_IMAGE_FOURCC_ABGR8888:
 302       pf = PIPE_FORMAT_RGBA8888_UNORM;
 303       break;
 304    case __DRI_IMAGE_FOURCC_XBGR8888:
 305       pf = PIPE_FORMAT_RGBX8888_UNORM;
 306       break;
 307    case __DRI_IMAGE_FOURCC_ARGB2101010:
 308       pf = PIPE_FORMAT_B10G10R10A2_UNORM;
 309       break;
 310    case __DRI_IMAGE_FOURCC_XRGB2101010:
 311       pf = PIPE_FORMAT_B10G10R10X2_UNORM;
 312       break;
 313    case __DRI_IMAGE_FOURCC_ABGR2101010:
 314       pf = PIPE_FORMAT_R10G10B10A2_UNORM;
 315       break;
 316    case __DRI_IMAGE_FOURCC_XBGR2101010:
 317       pf = PIPE_FORMAT_R10G10B10X2_UNORM;
 318       break;
 319
 320    case __DRI_IMAGE_FOURCC_NV12:
 321       pf = PIPE_FORMAT_NV12;
 322       break;
 323    case __DRI_IMAGE_FOURCC_YUYV:
 324       pf = PIPE_FORMAT_YUYV;
 325       break;
 326    case __DRI_IMAGE_FOURCC_YUV420:
 327    case __DRI_IMAGE_FOURCC_YVU420:
 328       pf = PIPE_FORMAT_YV12;
 329       break;
 330
 331    case __DRI_IMAGE_FOURCC_SARGB8888:
 332    case __DRI_IMAGE_FOURCC_YUV410:
 333    case __DRI_IMAGE_FOURCC_YUV411:
 334    case __DRI_IMAGE_FOURCC_YUV422:
 335    case __DRI_IMAGE_FOURCC_YUV444:
 336    case __DRI_IMAGE_FOURCC_NV16:
 337    case __DRI_IMAGE_FOURCC_YVU410:
 338    case __DRI_IMAGE_FOURCC_YVU411:
 339    case __DRI_IMAGE_FOURCC_YVU422:
 340    case __DRI_IMAGE_FOURCC_YVU444:
 341    default:
 342       pf = PIPE_FORMAT_NONE;
 343    }
 344
 345    return pf;
 346 }
 347
 348 /**
 349  * DRI2 flush extension.
 350  */
 351 static void
 352 dri2_flush_drawable(__DRIdrawable *dPriv)
 353 {
 354    dri_flush(dPriv->driContextPriv, dPriv, __DRI2_FLUSH_DRAWABLE, -1);
 355 }
 356
 357 static void
 358 dri2_invalidate_drawable(__DRIdrawable *dPriv)
 359 {
 360    struct dri_drawable *drawable = dri_drawable(dPriv);
 361
 362    dri2InvalidateDrawable(dPriv);
 363    drawable->dPriv->lastStamp = drawable->dPriv->dri2.stamp;
 364    drawable->texture_mask = 0;
 365
 366    p_atomic_inc(&drawable->base.stamp);
 367 }
 368
 369 static const __DRI2flushExtension dri2FlushExtension = {
 370     .base = { __DRI2_FLUSH, 4 },
 371
 372     .flush                = dri2_flush_drawable,
 373     .invalidate           = dri2_invalidate_drawable,
 374     .flush_with_flags     = dri_flush,
 375 };
 376
 377 /**
 378  * Retrieve __DRIbuffer from the DRI loader.
 379  */
 380 static __DRIbuffer *
 381 dri2_drawable_get_buffers(struct dri_drawable *drawable,
 382                           const enum st_attachment_type *atts,
 383                           unsigned *count)
 384 {
 385    __DRIdrawable *dri_drawable = drawable->dPriv;
 386    const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
 387    boolean with_format;
 388    __DRIbuffer *buffers;
 389    int num_buffers;
 390    unsigned attachments[10];
 391    unsigned num_attachments, i;
 392
 393    assert(loader);
 394    with_format = dri_with_format(drawable->sPriv);
 395
 396    num_attachments = 0;
 397
 398    /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
 399    if (!with_format)
 400       attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
 401
 402    for (i = 0; i < *count; i++) {
 403       enum pipe_format format;
 404       unsigned bind;
 405       int att, depth;
 406
 407       dri_drawable_get_format(drawable, atts[i], &format, &bind);
 408       if (format == PIPE_FORMAT_NONE)
 409          continue;
 410
 411       switch (atts[i]) {
 412       case ST_ATTACHMENT_FRONT_LEFT:
 413          /* already added */
 414          if (!with_format)
 415             continue;
 416          att = __DRI_BUFFER_FRONT_LEFT;
 417          break;
 418       case ST_ATTACHMENT_BACK_LEFT:
 419          att = __DRI_BUFFER_BACK_LEFT;
 420          break;
 421       case ST_ATTACHMENT_FRONT_RIGHT:
 422          att = __DRI_BUFFER_FRONT_RIGHT;
 423          break;
 424       case ST_ATTACHMENT_BACK_RIGHT:
 425          att = __DRI_BUFFER_BACK_RIGHT;
 426          break;
 427       default:
 428          continue;
 429       }
 430
 431       /*
 432        * In this switch statement we must support all formats that
 433        * may occur as the stvis->color_format.
 434        */
 435       switch(format) {
 436       case PIPE_FORMAT_B10G10R10A2_UNORM:
 437       case PIPE_FORMAT_R10G10B10A2_UNORM:
 438       case PIPE_FORMAT_BGRA8888_UNORM:
 439       case PIPE_FORMAT_RGBA8888_UNORM:
 440          depth = 32;
 441          break;
 442       case PIPE_FORMAT_R10G10B10X2_UNORM:
 443       case PIPE_FORMAT_B10G10R10X2_UNORM:
 444          depth = 30;
 445          break;
 446       case PIPE_FORMAT_BGRX8888_UNORM:
 447       case PIPE_FORMAT_RGBX8888_UNORM:
 448          depth = 24;
 449          break;
 450       case PIPE_FORMAT_B5G6R5_UNORM:
 451          depth = 16;
 452          break;
 453       default:
 454          depth = util_format_get_blocksizebits(format);
 455          assert(!"Unexpected format in dri2_drawable_get_buffers()");
 456       }
 457
 458       attachments[num_attachments++] = att;
 459       if (with_format) {
 460          attachments[num_attachments++] = depth;
 461       }
 462    }
 463
 464    if (with_format) {
 465       num_attachments /= 2;
 466       buffers = loader->getBuffersWithFormat(dri_drawable,
 467             &dri_drawable->w, &dri_drawable->h,
 468             attachments, num_attachments,
 469             &num_buffers, dri_drawable->loaderPrivate);
 470    }
 471    else {
 472       buffers = loader->getBuffers(dri_drawable,
 473             &dri_drawable->w, &dri_drawable->h,
 474             attachments, num_attachments,
 475             &num_buffers, dri_drawable->loaderPrivate);
 476    }
 477
 478    if (buffers)
 479       *count = num_buffers;
 480
 481    return buffers;
 482 }
 483
 484 static bool
 485 dri_image_drawable_get_buffers(struct dri_drawable *drawable,
 486                                struct __DRIimageList *images,
 487                                const enum st_attachment_type *statts,
 488                                unsigned statts_count)
 489 {
 490    __DRIdrawable *dPriv = drawable->dPriv;
 491    __DRIscreen *sPriv = drawable->sPriv;
 492    unsigned int image_format = __DRI_IMAGE_FORMAT_NONE;
 493    enum pipe_format pf;
 494    uint32_t buffer_mask = 0;
 495    unsigned i, bind;
 496
 497    for (i = 0; i < statts_count; i++) {
 498       dri_drawable_get_format(drawable, statts[i], &pf, &bind);
 499       if (pf == PIPE_FORMAT_NONE)
 500          continue;
 501
 502       switch (statts[i]) {
 503       case ST_ATTACHMENT_FRONT_LEFT:
 504          buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
 505          break;
 506       case ST_ATTACHMENT_BACK_LEFT:
 507          buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
 508          break;
 509       default:
 510          continue;
 511       }
 512
 513       switch (pf) {
 514       case PIPE_FORMAT_B5G6R5_UNORM:
 515          image_format = __DRI_IMAGE_FORMAT_RGB565;
 516          break;
 517       case PIPE_FORMAT_BGRX8888_UNORM:
 518          image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 519          break;
 520       case PIPE_FORMAT_BGRA8888_UNORM:
 521          image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 522          break;
 523       case PIPE_FORMAT_RGBX8888_UNORM:
 524          image_format = __DRI_IMAGE_FORMAT_XBGR8888;
 525          break;
 526       case PIPE_FORMAT_RGBA8888_UNORM:
 527          image_format = __DRI_IMAGE_FORMAT_ABGR8888;
 528          break;
 529       case PIPE_FORMAT_B10G10R10X2_UNORM:
 530          image_format = __DRI_IMAGE_FORMAT_XRGB2101010;
 531          break;
 532       case PIPE_FORMAT_B10G10R10A2_UNORM:
 533          image_format = __DRI_IMAGE_FORMAT_ARGB2101010;
 534          break;
 535       case PIPE_FORMAT_R10G10B10X2_UNORM:
 536          image_format = __DRI_IMAGE_FORMAT_XBGR2101010;
 537          break;
 538       case PIPE_FORMAT_R10G10B10A2_UNORM:
 539          image_format = __DRI_IMAGE_FORMAT_ABGR2101010;
 540          break;
 541       default:
 542          image_format = __DRI_IMAGE_FORMAT_NONE;
 543          break;
 544       }
 545    }
 546
 547    return (*sPriv->image.loader->getBuffers) (dPriv, image_format,
 548                                        (uint32_t *) &drawable->base.stamp,
 549                                        dPriv->loaderPrivate, buffer_mask,
 550                                        images);
 551 }
 552
 553 static __DRIbuffer *
 554 dri2_allocate_buffer(__DRIscreen *sPriv,
 555                      unsigned attachment, unsigned format,
 556                      int width, int height)
 557 {
 558    struct dri_screen *screen = dri_screen(sPriv);
 559    struct dri2_buffer *buffer;
 560    struct pipe_resource templ;
 561    enum pipe_format pf;
 562    unsigned bind = 0;
 563    struct winsys_handle whandle;
 564
 565    switch (attachment) {
 566       case __DRI_BUFFER_FRONT_LEFT:
 567       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 568          bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 569          break;
 570       case __DRI_BUFFER_BACK_LEFT:
 571          bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 572          break;
 573       case __DRI_BUFFER_DEPTH:
 574       case __DRI_BUFFER_DEPTH_STENCIL:
 575       case __DRI_BUFFER_STENCIL:
 576             bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
 577          break;
 578    }
 579
 580    /* because we get the handle and stride */
 581    bind |= PIPE_BIND_SHARED;
 582
 583    switch (format) {
 584       case 32:
 585          pf = PIPE_FORMAT_BGRA8888_UNORM;
 586          break;
 587       case 30:
 588          pf = PIPE_FORMAT_B10G10R10X2_UNORM;
 589          break;
 590       case 24:
 591          pf = PIPE_FORMAT_BGRX8888_UNORM;
 592          break;
 593       case 16:
 594          pf = PIPE_FORMAT_Z16_UNORM;
 595          break;
 596       default:
 597          return NULL;
 598    }
 599
 600    buffer = CALLOC_STRUCT(dri2_buffer);
 601    if (!buffer)
 602       return NULL;
 603
 604    memset(&templ, 0, sizeof(templ));
 605    templ.bind = bind;
 606    templ.format = pf;
 607    templ.target = PIPE_TEXTURE_2D;
 608    templ.last_level = 0;
 609    templ.width0 = width;
 610    templ.height0 = height;
 611    templ.depth0 = 1;
 612    templ.array_size = 1;
 613
 614    buffer->resource =
 615       screen->base.screen->resource_create(screen->base.screen, &templ);
 616    if (!buffer->resource) {
 617       FREE(buffer);
 618       return NULL;
 619    }
 620
 621    memset(&whandle, 0, sizeof(whandle));
 622    if (screen->can_share_buffer)
 623       whandle.type = WINSYS_HANDLE_TYPE_SHARED;
 624    else
 625       whandle.type = WINSYS_HANDLE_TYPE_KMS;
 626
 627    screen->base.screen->resource_get_handle(screen->base.screen, NULL,
 628          buffer->resource, &whandle,
 629          PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ);
 630
 631    buffer->base.attachment = attachment;
 632    buffer->base.name = whandle.handle;
 633    buffer->base.cpp = util_format_get_blocksize(pf);
 634    buffer->base.pitch = whandle.stride;
 635
 636    return &buffer->base;
 637 }
 638
 639 static void
 640 dri2_release_buffer(__DRIscreen *sPriv, __DRIbuffer *bPriv)
 641 {
 642    struct dri2_buffer *buffer = dri2_buffer(bPriv);
 643
 644    pipe_resource_reference(&buffer->resource, NULL);
 645    FREE(buffer);
 646 }
 647
 648 /*
 649  * Backend functions for st_framebuffer interface.
 650  */
 651
 652 static void
 653 dri2_allocate_textures(struct dri_context *ctx,
 654                        struct dri_drawable *drawable,
 655                        const enum st_attachment_type *statts,
 656                        unsigned statts_count)
 657 {
 658    __DRIscreen *sPriv = drawable->sPriv;
 659    __DRIdrawable *dri_drawable = drawable->dPriv;
 660    struct dri_screen *screen = dri_screen(sPriv);
 661    struct pipe_resource templ;
 662    boolean alloc_depthstencil = FALSE;
 663    unsigned i, j, bind;
 664    const __DRIimageLoaderExtension *image = sPriv->image.loader;
 665    /* Image specific variables */
 666    struct __DRIimageList images;
 667    /* Dri2 specific variables */
 668    __DRIbuffer *buffers = NULL;
 669    struct winsys_handle whandle;
 670    unsigned num_buffers = statts_count;
 671
 672    /* First get the buffers from the loader */
 673    if (image) {
 674       if (!dri_image_drawable_get_buffers(drawable, &images,
 675                                           statts, statts_count))
 676          return;
 677    }
 678    else {
 679       buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
 680       if (!buffers || (drawable->old_num == num_buffers &&
 681                        drawable->old_w == dri_drawable->w &&
 682                        drawable->old_h == dri_drawable->h &&
 683                        memcmp(drawable->old, buffers,
 684                               sizeof(__DRIbuffer) * num_buffers) == 0))
 685          return;
 686    }
 687
 688    /* Second clean useless resources*/
 689
 690    /* See if we need a depth-stencil buffer. */
 691    for (i = 0; i < statts_count; i++) {
 692       if (statts[i] == ST_ATTACHMENT_DEPTH_STENCIL) {
 693          alloc_depthstencil = TRUE;
 694          break;
 695       }
 696    }
 697
 698    /* Delete the resources we won't need. */
 699    for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
 700       /* Don't delete the depth-stencil buffer, we can reuse it. */
 701       if (i == ST_ATTACHMENT_DEPTH_STENCIL && alloc_depthstencil)
 702          continue;
 703
 704       /* Flush the texture before unreferencing, so that other clients can
 705        * see what the driver has rendered.
 706        */
 707       if (i != ST_ATTACHMENT_DEPTH_STENCIL && drawable->textures[i]) {
 708          struct pipe_context *pipe = ctx->st->pipe;
 709          pipe->flush_resource(pipe, drawable->textures[i]);
 710       }
 711
 712       pipe_resource_reference(&drawable->textures[i], NULL);
 713    }
 714
 715    if (drawable->stvis.samples > 1) {
 716       for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
 717          boolean del = TRUE;
 718
 719          /* Don't delete MSAA resources for the attachments which are enabled,
 720           * we can reuse them. */
 721          for (j = 0; j < statts_count; j++) {
 722             if (i == statts[j]) {
 723                del = FALSE;
 724                break;
 725             }
 726          }
 727
 728          if (del) {
 729             pipe_resource_reference(&drawable->msaa_textures[i], NULL);
 730          }
 731       }
 732    }
 733
 734    /* Third use the buffers retrieved to fill the drawable info */
 735
 736    memset(&templ, 0, sizeof(templ));
 737    templ.target = screen->target;
 738    templ.last_level = 0;
 739    templ.depth0 = 1;
 740    templ.array_size = 1;
 741
 742    if (image) {
 743       if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
 744          struct pipe_resource **buf =
 745             &drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
 746          struct pipe_resource *texture = images.front->texture;
 747
 748          dri_drawable->w = texture->width0;
 749          dri_drawable->h = texture->height0;
 750
 751          pipe_resource_reference(buf, texture);
 752       }
 753
 754       if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
 755          struct pipe_resource **buf =
 756             &drawable->textures[ST_ATTACHMENT_BACK_LEFT];
 757          struct pipe_resource *texture = images.back->texture;
 758
 759          dri_drawable->w = texture->width0;
 760          dri_drawable->h = texture->height0;
 761
 762          pipe_resource_reference(buf, texture);
 763       }
 764
 765       /* Note: if there is both a back and a front buffer,
 766        * then they have the same size.
 767        */
 768       templ.width0 = dri_drawable->w;
 769       templ.height0 = dri_drawable->h;
 770    }
 771    else {
 772       memset(&whandle, 0, sizeof(whandle));
 773
 774       /* Process DRI-provided buffers and get pipe_resources. */
 775       for (i = 0; i < num_buffers; i++) {
 776          __DRIbuffer *buf = &buffers[i];
 777          enum st_attachment_type statt;
 778          enum pipe_format format;
 779
 780          switch (buf->attachment) {
 781          case __DRI_BUFFER_FRONT_LEFT:
 782             if (!screen->auto_fake_front) {
 783                continue; /* invalid attachment */
 784             }
 785             /* fallthrough */
 786          case __DRI_BUFFER_FAKE_FRONT_LEFT:
 787             statt = ST_ATTACHMENT_FRONT_LEFT;
 788             break;
 789          case __DRI_BUFFER_BACK_LEFT:
 790             statt = ST_ATTACHMENT_BACK_LEFT;
 791             break;
 792          default:
 793             continue; /* invalid attachment */
 794          }
 795
 796          dri_drawable_get_format(drawable, statt, &format, &bind);
 797          if (format == PIPE_FORMAT_NONE)
 798             continue;
 799
 800          /* dri2_drawable_get_buffers has already filled dri_drawable->w
 801           * and dri_drawable->h */
 802          templ.width0 = dri_drawable->w;
 803          templ.height0 = dri_drawable->h;
 804          templ.format = format;
 805          templ.bind = bind;
 806          whandle.handle = buf->name;
 807          whandle.stride = buf->pitch;
 808          whandle.offset = 0;
 809          whandle.modifier = DRM_FORMAT_MOD_INVALID;
 810          if (screen->can_share_buffer)
 811             whandle.type = WINSYS_HANDLE_TYPE_SHARED;
 812          else
 813             whandle.type = WINSYS_HANDLE_TYPE_KMS;
 814          drawable->textures[statt] =
 815             screen->base.screen->resource_from_handle(screen->base.screen,
 816                   &templ, &whandle,
 817                   PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ);
 818          assert(drawable->textures[statt]);
 819       }
 820    }
 821
 822    /* Allocate private MSAA colorbuffers. */
 823    if (drawable->stvis.samples > 1) {
 824       for (i = 0; i < statts_count; i++) {
 825          enum st_attachment_type statt = statts[i];
 826
 827          if (statt == ST_ATTACHMENT_DEPTH_STENCIL)
 828             continue;
 829
 830          if (drawable->textures[statt]) {
 831             templ.format = drawable->textures[statt]->format;
 832             templ.bind = drawable->textures[statt]->bind &
 833                          ~(PIPE_BIND_SCANOUT | PIPE_BIND_SHARED);
 834             templ.nr_samples = drawable->stvis.samples;
 835
 836             /* Try to reuse the resource.
 837              * (the other resource parameters should be constant)
 838              */
 839             if (!drawable->msaa_textures[statt] ||
 840                 drawable->msaa_textures[statt]->width0 != templ.width0 ||
 841                 drawable->msaa_textures[statt]->height0 != templ.height0) {
 842                /* Allocate a new one. */
 843                pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 844
 845                drawable->msaa_textures[statt] =
 846                   screen->base.screen->resource_create(screen->base.screen,
 847                                                        &templ);
 848                assert(drawable->msaa_textures[statt]);
 849
 850                /* If there are any MSAA resources, we should initialize them
 851                 * such that they contain the same data as the single-sample
 852                 * resources we just got from the X server.
 853                 *
 854                 * The reason for this is that the state tracker (and
 855                 * therefore the app) can access the MSAA resources only.
 856                 * The single-sample resources are not exposed
 857                 * to the state tracker.
 858                 *
 859                 */
 860                dri_pipe_blit(ctx->st->pipe,
 861                              drawable->msaa_textures[statt],
 862                              drawable->textures[statt]);
 863             }
 864          }
 865          else {
 866             pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 867          }
 868       }
 869    }
 870
 871    /* Allocate a private depth-stencil buffer. */
 872    if (alloc_depthstencil) {
 873       enum st_attachment_type statt = ST_ATTACHMENT_DEPTH_STENCIL;
 874       struct pipe_resource **zsbuf;
 875       enum pipe_format format;
 876       unsigned bind;
 877
 878       dri_drawable_get_format(drawable, statt, &format, &bind);
 879
 880       if (format) {
 881          templ.format = format;
 882          templ.bind = bind & ~PIPE_BIND_SHARED;
 883
 884          if (drawable->stvis.samples > 1) {
 885             templ.nr_samples = drawable->stvis.samples;
 886             zsbuf = &drawable->msaa_textures[statt];
 887          }
 888          else {
 889             templ.nr_samples = 0;
 890             zsbuf = &drawable->textures[statt];
 891          }
 892
 893          /* Try to reuse the resource.
 894           * (the other resource parameters should be constant)
 895           */
 896          if (!*zsbuf ||
 897              (*zsbuf)->width0 != templ.width0 ||
 898              (*zsbuf)->height0 != templ.height0) {
 899             /* Allocate a new one. */
 900             pipe_resource_reference(zsbuf, NULL);
 901             *zsbuf = screen->base.screen->resource_create(screen->base.screen,
 902                                                           &templ);
 903             assert(*zsbuf);
 904          }
 905       }
 906       else {
 907          pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 908          pipe_resource_reference(&drawable->textures[statt], NULL);
 909       }
 910    }
 911
 912    /* For DRI2, we may get the same buffers again from the server.
 913     * To prevent useless imports of gem names, drawable->old* is used
 914     * to bypass the import if we get the same buffers. This doesn't apply
 915     * to DRI3/Wayland, users of image.loader, since the buffer is managed
 916     * by the client (no import), and the back buffer is going to change
 917     * at every redraw.
 918     */
 919    if (!image) {
 920       drawable->old_num = num_buffers;
 921       drawable->old_w = dri_drawable->w;
 922       drawable->old_h = dri_drawable->h;
 923       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * num_buffers);
 924    }
 925 }
 926
 927 static void
 928 dri2_flush_frontbuffer(struct dri_context *ctx,
 929                        struct dri_drawable *drawable,
 930                        enum st_attachment_type statt)
 931 {
 932    __DRIdrawable *dri_drawable = drawable->dPriv;
 933    const __DRIimageLoaderExtension *image = drawable->sPriv->image.loader;
 934    const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
 935    struct pipe_context *pipe = ctx->st->pipe;
 936
 937    if (statt != ST_ATTACHMENT_FRONT_LEFT)
 938       return;
 939
 940    if (drawable->stvis.samples > 1) {
 941       /* Resolve the front buffer. */
 942       dri_pipe_blit(ctx->st->pipe,
 943                     drawable->textures[ST_ATTACHMENT_FRONT_LEFT],
 944                     drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT]);
 945    }
 946
 947    if (drawable->textures[ST_ATTACHMENT_FRONT_LEFT]) {
 948       pipe->flush_resource(pipe, drawable->textures[ST_ATTACHMENT_FRONT_LEFT]);
 949    }
 950
 951    pipe->flush(pipe, NULL, 0);
 952
 953    if (image) {
 954       image->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 955    }
 956    else if (loader->flushFrontBuffer) {
 957       loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 958    }
 959 }
 960
 961 /**
 962  * The struct dri_drawable flush_swapbuffers callback
 963  */
 964 static void
 965 dri2_flush_swapbuffers(struct dri_context *ctx,
 966                        struct dri_drawable *drawable)
 967 {
 968    __DRIdrawable *dri_drawable = drawable->dPriv;
 969    const __DRIimageLoaderExtension *image = drawable->sPriv->image.loader;
 970
 971    if (image && image->base.version >= 3 && image->flushSwapBuffers) {
 972       image->flushSwapBuffers(dri_drawable, dri_drawable->loaderPrivate);
 973    }
 974 }
 975
 976 static void
 977 dri2_update_tex_buffer(struct dri_drawable *drawable,
 978                        struct dri_context *ctx,
 979                        struct pipe_resource *res)
 980 {
 981    /* no-op */
 982 }
 983
 984 static __DRIimage *
 985 dri2_create_image_from_winsys(__DRIscreen *_screen,
 986                               int width, int height, int format,
 987                               int num_handles, struct winsys_handle *whandle,
 988                               void *loaderPrivate)
 989 {
 990    struct dri_screen *screen = dri_screen(_screen);
 991    struct pipe_screen *pscreen = screen->base.screen;
 992    __DRIimage *img;
 993    struct pipe_resource templ;
 994    unsigned tex_usage;
 995    enum pipe_format pf;
 996    int i;
 997
 998    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 999
1000    pf = dri2_format_to_pipe_format (format);
1001    if (pf == PIPE_FORMAT_NONE)
1002       return NULL;
1003
1004    img = CALLOC_STRUCT(__DRIimageRec);
1005    if (!img)
1006       return NULL;
1007
1008    memset(&templ, 0, sizeof(templ));
1009    templ.bind = tex_usage;
1010    templ.target = screen->target;
1011    templ.last_level = 0;
1012    templ.depth0 = 1;
1013    templ.array_size = 1;
1014
1015    for (i = num_handles - 1; i >= 0; i--) {
1016       struct pipe_resource *tex;
1017
1018       /* TODO: something a lot less ugly */
1019       switch (i) {
1020       case 0:
1021          templ.width0 = width;
1022          templ.height0 = height;
1023          templ.format = pf;
1024          break;
1025       case 1:
1026          templ.width0 = width / 2;
1027          templ.height0 = height / 2;
1028          templ.format = (num_handles == 2) ?
1029                PIPE_FORMAT_RG88_UNORM :   /* NV12, etc */
1030                PIPE_FORMAT_R8_UNORM;      /* I420, etc */
1031          break;
1032       case 2:
1033          templ.width0 = width / 2;
1034          templ.height0 = height / 2;
1035          templ.format = PIPE_FORMAT_R8_UNORM;
1036          break;
1037       default:
1038          unreachable("too many planes!");
1039       }
1040
1041       tex = pscreen->resource_from_handle(pscreen,
1042             &templ, &whandle[i], PIPE_HANDLE_USAGE_READ_WRITE);
1043       if (!tex) {
1044          pipe_resource_reference(&img->texture, NULL);
1045          FREE(img);
1046          return NULL;
1047       }
1048
1049       tex->next = img->texture;
1050       img->texture = tex;
1051    }
1052
1053    img->level = 0;
1054    img->layer = 0;
1055    img->dri_format = format;
1056    img->use = 0;
1057    img->loader_private = loaderPrivate;
1058
1059    return img;
1060 }
1061
1062 static __DRIimage *
1063 dri2_create_image_from_name(__DRIscreen *_screen,
1064                             int width, int height, int format,
1065                             int name, int pitch, void *loaderPrivate)
1066 {
1067    struct winsys_handle whandle;
1068    enum pipe_format pf;
1069
1070    memset(&whandle, 0, sizeof(whandle));
1071    whandle.type = WINSYS_HANDLE_TYPE_SHARED;
1072    whandle.handle = name;
1073    whandle.modifier = DRM_FORMAT_MOD_INVALID;
1074
1075    pf = dri2_format_to_pipe_format (format);
1076    if (pf == PIPE_FORMAT_NONE)
1077       return NULL;
1078
1079    whandle.stride = pitch * util_format_get_blocksize(pf);
1080
1081    return dri2_create_image_from_winsys(_screen, width, height, format,
1082                                         1, &whandle, loaderPrivate);
1083 }
1084
1085 static __DRIimage *
1086 dri2_create_image_from_fd(__DRIscreen *_screen,
1087                           int width, int height, int fourcc,
1088                           uint64_t modifier, int *fds, int num_fds,
1089                           int *strides, int *offsets, unsigned *error,
1090                           int *dri_components, void *loaderPrivate)
1091 {
1092    struct winsys_handle whandles[3];
1093    int format;
1094    __DRIimage *img = NULL;
1095    unsigned err = __DRI_IMAGE_ERROR_SUCCESS;
1096    int expected_num_fds, i;
1097
1098    switch (fourcc) {
1099    case __DRI_IMAGE_FOURCC_YUV420:
1100    case __DRI_IMAGE_FOURCC_YVU420:
1101       expected_num_fds = 3;
1102       break;
1103    case __DRI_IMAGE_FOURCC_NV12:
1104       expected_num_fds = 2;
1105       break;
1106    default:
1107       expected_num_fds = 1;
1108       break;
1109    }
1110
1111    if (num_fds != expected_num_fds) {
1112       err = __DRI_IMAGE_ERROR_BAD_MATCH;
1113       goto exit;
1114    }
1115
1116    format = convert_fourcc(fourcc, dri_components);
1117    if (format == -1) {
1118       err = __DRI_IMAGE_ERROR_BAD_MATCH;
1119       goto exit;
1120    }
1121
1122    memset(whandles, 0, sizeof(whandles));
1123
1124    for (i = 0; i < num_fds; i++) {
1125       if (fds[i] < 0) {
1126          err = __DRI_IMAGE_ERROR_BAD_ALLOC;
1127          goto exit;
1128       }
1129
1130       whandles[i].type = WINSYS_HANDLE_TYPE_FD;
1131       whandles[i].handle = (unsigned)fds[i];
1132       whandles[i].stride = (unsigned)strides[i];
1133       whandles[i].offset = (unsigned)offsets[i];
1134       whandles[i].modifier = modifier;
1135    }
1136
1137    if (fourcc == __DRI_IMAGE_FOURCC_YVU420) {
1138       /* convert to YUV420 by swapping 2nd and 3rd planes: */
1139       struct winsys_handle tmp = whandles[1];
1140       whandles[1] = whandles[2];
1141       whandles[2] = tmp;
1142       fourcc = __DRI_IMAGE_FOURCC_YUV420;
1143    }
1144
1145    img = dri2_create_image_from_winsys(_screen, width, height, format,
1146                                        num_fds, whandles, loaderPrivate);
1147    if(img == NULL)
1148       err = __DRI_IMAGE_ERROR_BAD_ALLOC;
1149
1150 exit:
1151    if (error)
1152       *error = err;
1153
1154    return img;
1155 }
1156
1157 static __DRIimage *
1158 dri2_create_image_common(__DRIscreen *_screen,
1159                          int width, int height,
1160                          int format, unsigned int use,
1161                          const uint64_t *modifiers,
1162                          const unsigned count,
1163                          void *loaderPrivate)
1164 {
1165    struct dri_screen *screen = dri_screen(_screen);
1166    __DRIimage *img;
1167    struct pipe_resource templ;
1168    unsigned tex_usage;
1169    enum pipe_format pf;
1170
1171    /* createImageWithModifiers doesn't supply usage, and we should not get
1172     * here with both modifiers and a usage flag.
1173     */
1174    assert(!(use && (modifiers != NULL)));
1175
1176    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
1177
1178    if (use & __DRI_IMAGE_USE_SCANOUT)
1179       tex_usage |= PIPE_BIND_SCANOUT;
1180    if (use & __DRI_IMAGE_USE_SHARE)
1181       tex_usage |= PIPE_BIND_SHARED;
1182    if (use & __DRI_IMAGE_USE_LINEAR)
1183       tex_usage |= PIPE_BIND_LINEAR;
1184    if (use & __DRI_IMAGE_USE_CURSOR) {
1185       if (width != 64 || height != 64)
1186          return NULL;
1187       tex_usage |= PIPE_BIND_CURSOR;
1188    }
1189
1190    pf = dri2_format_to_pipe_format (format);
1191    if (pf == PIPE_FORMAT_NONE)
1192       return NULL;
1193
1194    img = CALLOC_STRUCT(__DRIimageRec);
1195    if (!img)
1196       return NULL;
1197
1198    memset(&templ, 0, sizeof(templ));
1199    templ.bind = tex_usage;
1200    templ.format = pf;
1201    templ.target = PIPE_TEXTURE_2D;
1202    templ.last_level = 0;
1203    templ.width0 = width;
1204    templ.height0 = height;
1205    templ.depth0 = 1;
1206    templ.array_size = 1;
1207
1208    if (modifiers)
1209       img->texture =
1210          screen->base.screen
1211             ->resource_create_with_modifiers(screen->base.screen,
1212                                              &templ,
1213                                              modifiers,
1214                                              count);
1215    else
1216       img->texture =
1217          screen->base.screen->resource_create(screen->base.screen, &templ);
1218    if (!img->texture) {
1219       FREE(img);
1220       return NULL;
1221    }
1222
1223    img->level = 0;
1224    img->layer = 0;
1225    img->dri_format = format;
1226    img->dri_components = 0;
1227    img->use = use;
1228
1229    img->loader_private = loaderPrivate;
1230    return img;
1231 }
1232
1233 static __DRIimage *
1234 dri2_create_image(__DRIscreen *_screen,
1235                    int width, int height, int format,
1236                    unsigned int use, void *loaderPrivate)
1237 {
1238    return dri2_create_image_common(_screen, width, height, format, use,
1239                                    NULL /* modifiers */, 0 /* count */,
1240                                    loaderPrivate);
1241 }
1242
1243 static __DRIimage *
1244 dri2_create_image_with_modifiers(__DRIscreen *dri_screen,
1245                                  int width, int height, int format,
1246                                  const uint64_t *modifiers,
1247                                  const unsigned count,
1248                                  void *loaderPrivate)
1249 {
1250    return dri2_create_image_common(dri_screen, width, height, format,
1251                                    0 /* use */, modifiers, count,
1252                                    loaderPrivate);
1253 }
1254
1255 static GLboolean
1256 dri2_query_image(__DRIimage *image, int attrib, int *value)
1257 {
1258    struct winsys_handle whandle;
1259    unsigned usage;
1260
1261    if (image->use & __DRI_IMAGE_USE_BACKBUFFER)
1262       usage = PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ;
1263    else
1264       usage = PIPE_HANDLE_USAGE_READ_WRITE;
1265
1266    memset(&whandle, 0, sizeof(whandle));
1267
1268    switch (attrib) {
1269    case __DRI_IMAGE_ATTRIB_STRIDE:
1270       whandle.type = WINSYS_HANDLE_TYPE_KMS;
1271       if (!image->texture->screen->resource_get_handle(image->texture->screen,
1272             NULL, image->texture, &whandle, usage))
1273          return GL_FALSE;
1274       *value = whandle.stride;
1275       return GL_TRUE;
1276    case __DRI_IMAGE_ATTRIB_OFFSET:
1277       whandle.type = WINSYS_HANDLE_TYPE_KMS;
1278       if (!image->texture->screen->resource_get_handle(image->texture->screen,
1279             NULL, image->texture, &whandle, usage))
1280          return GL_FALSE;
1281       *value = whandle.offset;
1282       return GL_TRUE;
1283    case __DRI_IMAGE_ATTRIB_HANDLE:
1284       whandle.type = WINSYS_HANDLE_TYPE_KMS;
1285       if (!image->texture->screen->resource_get_handle(image->texture->screen,
1286          NULL, image->texture, &whandle, usage))
1287          return GL_FALSE;
1288       *value = whandle.handle;
1289       return GL_TRUE;
1290    case __DRI_IMAGE_ATTRIB_NAME:
1291       whandle.type = WINSYS_HANDLE_TYPE_SHARED;
1292       if (!image->texture->screen->resource_get_handle(image->texture->screen,
1293          NULL, image->texture, &whandle, usage))
1294          return GL_FALSE;
1295       *value = whandle.handle;
1296       return GL_TRUE;
1297    case __DRI_IMAGE_ATTRIB_FD:
1298       whandle.type= WINSYS_HANDLE_TYPE_FD;
1299       if (!image->texture->screen->resource_get_handle(image->texture->screen,
1300             NULL, image->texture, &whandle, usage))
1301          return GL_FALSE;
1302
1303       *value = whandle.handle;
1304       return GL_TRUE;
1305    case __DRI_IMAGE_ATTRIB_FORMAT:
1306       *value = image->dri_format;
1307       return GL_TRUE;
1308    case __DRI_IMAGE_ATTRIB_WIDTH:
1309       *value = image->texture->width0;
1310       return GL_TRUE;
1311    case __DRI_IMAGE_ATTRIB_HEIGHT:
1312       *value = image->texture->height0;
1313       return GL_TRUE;
1314    case __DRI_IMAGE_ATTRIB_COMPONENTS:
1315       if (image->dri_components == 0)
1316          return GL_FALSE;
1317       *value = image->dri_components;
1318       return GL_TRUE;
1319    case __DRI_IMAGE_ATTRIB_FOURCC:
1320       *value = convert_to_fourcc(image->dri_format);
1321       return *value != -1;
1322    case __DRI_IMAGE_ATTRIB_NUM_PLANES:
1323       *value = 1;
1324       return GL_TRUE;
1325    case __DRI_IMAGE_ATTRIB_MODIFIER_UPPER:
1326       whandle.type = WINSYS_HANDLE_TYPE_KMS;
1327       whandle.modifier = DRM_FORMAT_MOD_INVALID;
1328       if (!image->texture->screen->resource_get_handle(image->texture->screen,
1329             NULL, image->texture, &whandle, usage))
1330          return GL_FALSE;
1331       if (whandle.modifier == DRM_FORMAT_MOD_INVALID)
1332          return GL_FALSE;
1333       *value = (whandle.modifier >> 32) & 0xffffffff;
1334       return GL_TRUE;
1335    case __DRI_IMAGE_ATTRIB_MODIFIER_LOWER:
1336       whandle.type = WINSYS_HANDLE_TYPE_KMS;
1337       whandle.modifier = DRM_FORMAT_MOD_INVALID;
1338       if (!image->texture->screen->resource_get_handle(image->texture->screen,
1339             NULL, image->texture, &whandle, usage))
1340          return GL_FALSE;
1341       if (whandle.modifier == DRM_FORMAT_MOD_INVALID)
1342          return GL_FALSE;
1343       *value = whandle.modifier & 0xffffffff;
1344       return GL_TRUE;
1345    default:
1346       return GL_FALSE;
1347    }
1348 }
1349
1350 static __DRIimage *
1351 dri2_dup_image(__DRIimage *image, void *loaderPrivate)
1352 {
1353    __DRIimage *img;
1354
1355    img = CALLOC_STRUCT(__DRIimageRec);
1356    if (!img)
1357       return NULL;
1358
1359    img->texture = NULL;
1360    pipe_resource_reference(&img->texture, image->texture);
1361    img->level = image->level;
1362    img->layer = image->layer;
1363    img->dri_format = image->dri_format;
1364    /* This should be 0 for sub images, but dup is also used for base images. */
1365    img->dri_components = image->dri_components;
1366    img->loader_private = loaderPrivate;
1367
1368    return img;
1369 }
1370
1371 static GLboolean
1372 dri2_validate_usage(__DRIimage *image, unsigned int use)
1373 {
1374    if (!image || !image->texture)
1375       return false;
1376
1377    struct pipe_screen *screen = image->texture->screen;
1378    if (!screen->check_resource_capability)
1379       return true;
1380
1381    /* We don't want to check these:
1382     *   __DRI_IMAGE_USE_SHARE (all images are shareable)
1383     *   __DRI_IMAGE_USE_BACKBUFFER (all images support this)
1384     */
1385    unsigned bind = 0;
1386    if (use & __DRI_IMAGE_USE_SCANOUT)
1387       bind |= PIPE_BIND_SCANOUT;
1388    if (use & __DRI_IMAGE_USE_LINEAR)
1389       bind |= PIPE_BIND_LINEAR;
1390    if (use & __DRI_IMAGE_USE_CURSOR)
1391       bind |= PIPE_BIND_CURSOR;
1392
1393    if (!bind)
1394       return true;
1395
1396    return screen->check_resource_capability(screen, image->texture, bind);
1397 }
1398
1399 static __DRIimage *
1400 dri2_from_names(__DRIscreen *screen, int width, int height, int format,
1401                 int *names, int num_names, int *strides, int *offsets,
1402                 void *loaderPrivate)
1403 {
1404    __DRIimage *img;
1405    int dri_components;
1406    struct winsys_handle whandle;
1407
1408    if (num_names != 1)
1409       return NULL;
1410
1411    format = convert_fourcc(format, &dri_components);
1412    if (format == -1)
1413       return NULL;
1414
1415    memset(&whandle, 0, sizeof(whandle));
1416    whandle.type = WINSYS_HANDLE_TYPE_SHARED;
1417    whandle.handle = names[0];
1418    whandle.stride = strides[0];
1419    whandle.offset = offsets[0];
1420    whandle.modifier = DRM_FORMAT_MOD_INVALID;
1421
1422    img = dri2_create_image_from_winsys(screen, width, height, format,
1423                                        1, &whandle, loaderPrivate);
1424    if (img == NULL)
1425       return NULL;
1426
1427    img->dri_components = dri_components;
1428    return img;
1429 }
1430
1431 static __DRIimage *
1432 dri2_from_planar(__DRIimage *image, int plane, void *loaderPrivate)
1433 {
1434    __DRIimage *img;
1435
1436    if (plane != 0)
1437       return NULL;
1438
1439    if (image->dri_components == 0)
1440       return NULL;
1441
1442    img = dri2_dup_image(image, loaderPrivate);
1443    if (img == NULL)
1444       return NULL;
1445
1446    if (img->texture->screen->resource_changed)
1447       img->texture->screen->resource_changed(img->texture->screen,
1448                                              img->texture);
1449
1450    /* set this to 0 for sub images. */
1451    img->dri_components = 0;
1452    return img;
1453 }
1454
1455 static __DRIimage *
1456 dri2_from_fds(__DRIscreen *screen, int width, int height, int fourcc,
1457               int *fds, int num_fds, int *strides, int *offsets,
1458               void *loaderPrivate)
1459 {
1460    __DRIimage *img;
1461    int dri_components;
1462
1463    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1464                                    DRM_FORMAT_MOD_INVALID, fds, num_fds,
1465                                    strides, offsets, NULL,
1466                                    &dri_components, loaderPrivate);
1467    if (img == NULL)
1468       return NULL;
1469
1470    img->dri_components = dri_components;
1471    return img;
1472 }
1473
1474 static boolean
1475 dri2_query_dma_buf_formats(__DRIscreen *_screen, int max, int *formats,
1476                            int *count)
1477 {
1478    struct dri_screen *screen = dri_screen(_screen);
1479    struct pipe_screen *pscreen = screen->base.screen;
1480    const unsigned bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
1481    int i, j;
1482
1483    for (i = 0, j = 0; (i < ARRAY_SIZE(fourcc_formats)) &&
1484          (j < max || max == 0); i++) {
1485       if (pscreen->is_format_supported(pscreen,
1486                                        fourcc_to_pipe_format(
1487                                           fourcc_formats[i]),
1488                                        screen->target,
1489                                        0, bind)) {
1490          if (j < max)
1491             formats[j] = fourcc_formats[i];
1492          j++;
1493       }
1494    }
1495    *count = j;
1496    return true;
1497 }
1498
1499 static boolean
1500 dri2_query_dma_buf_modifiers(__DRIscreen *_screen, int fourcc, int max,
1501                              uint64_t *modifiers, unsigned int *external_only,
1502                              int *count)
1503 {
1504    struct dri_screen *screen = dri_screen(_screen);
1505    struct pipe_screen *pscreen = screen->base.screen;
1506    enum pipe_format format = fourcc_to_pipe_format(fourcc);
1507    const unsigned usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
1508
1509    if (pscreen->query_dmabuf_modifiers != NULL &&
1510        pscreen->is_format_supported(pscreen, format, screen->target, 0, usage)) {
1511       pscreen->query_dmabuf_modifiers(pscreen, format, max, modifiers,
1512                                       external_only, count);
1513       return true;
1514    }
1515    return false;
1516 }
1517
1518 static __DRIimage *
1519 dri2_from_dma_bufs(__DRIscreen *screen,
1520                    int width, int height, int fourcc,
1521                    int *fds, int num_fds,
1522                    int *strides, int *offsets,
1523                    enum __DRIYUVColorSpace yuv_color_space,
1524                    enum __DRISampleRange sample_range,
1525                    enum __DRIChromaSiting horizontal_siting,
1526                    enum __DRIChromaSiting vertical_siting,
1527                    unsigned *error,
1528                    void *loaderPrivate)
1529 {
1530    __DRIimage *img;
1531    int dri_components;
1532
1533    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1534                                    DRM_FORMAT_MOD_INVALID, fds, num_fds,
1535                                    strides, offsets, error,
1536                                    &dri_components, loaderPrivate);
1537    if (img == NULL)
1538       return NULL;
1539
1540    img->yuv_color_space = yuv_color_space;
1541    img->sample_range = sample_range;
1542    img->horizontal_siting = horizontal_siting;
1543    img->vertical_siting = vertical_siting;
1544    img->dri_components = dri_components;
1545
1546    *error = __DRI_IMAGE_ERROR_SUCCESS;
1547    return img;
1548 }
1549
1550 static __DRIimage *
1551 dri2_from_dma_bufs2(__DRIscreen *screen,
1552                     int width, int height, int fourcc,
1553                     uint64_t modifier, int *fds, int num_fds,
1554                     int *strides, int *offsets,
1555                     enum __DRIYUVColorSpace yuv_color_space,
1556                     enum __DRISampleRange sample_range,
1557                     enum __DRIChromaSiting horizontal_siting,
1558                     enum __DRIChromaSiting vertical_siting,
1559                     unsigned *error,
1560                     void *loaderPrivate)
1561 {
1562    __DRIimage *img;
1563    int dri_components;
1564
1565    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1566                                    modifier, fds, num_fds, strides, offsets,
1567                                    error, &dri_components, loaderPrivate);
1568    if (img == NULL)
1569       return NULL;
1570
1571    img->yuv_color_space = yuv_color_space;
1572    img->sample_range = sample_range;
1573    img->horizontal_siting = horizontal_siting;
1574    img->vertical_siting = vertical_siting;
1575    img->dri_components = dri_components;
1576
1577    *error = __DRI_IMAGE_ERROR_SUCCESS;
1578    return img;
1579 }
1580
1581 static void
1582 dri2_blit_image(__DRIcontext *context, __DRIimage *dst, __DRIimage *src,
1583                 int dstx0, int dsty0, int dstwidth, int dstheight,
1584                 int srcx0, int srcy0, int srcwidth, int srcheight,
1585                 int flush_flag)
1586 {
1587    struct dri_context *ctx = dri_context(context);
1588    struct pipe_context *pipe = ctx->st->pipe;
1589    struct pipe_screen *screen;
1590    struct pipe_fence_handle *fence;
1591    struct pipe_blit_info blit;
1592
1593    if (!dst || !src)
1594       return;
1595
1596    memset(&blit, 0, sizeof(blit));
1597    blit.dst.resource = dst->texture;
1598    blit.dst.box.x = dstx0;
1599    blit.dst.box.y = dsty0;
1600    blit.dst.box.width = dstwidth;
1601    blit.dst.box.height = dstheight;
1602    blit.dst.box.depth = 1;
1603    blit.dst.format = dst->texture->format;
1604    blit.src.resource = src->texture;
1605    blit.src.box.x = srcx0;
1606    blit.src.box.y = srcy0;
1607    blit.src.box.width = srcwidth;
1608    blit.src.box.height = srcheight;
1609    blit.src.box.depth = 1;
1610    blit.src.format = src->texture->format;
1611    blit.mask = PIPE_MASK_RGBA;
1612    blit.filter = PIPE_TEX_FILTER_NEAREST;
1613
1614    pipe->blit(pipe, &blit);
1615
1616    if (flush_flag == __BLIT_FLAG_FLUSH) {
1617       pipe->flush_resource(pipe, dst->texture);
1618       ctx->st->flush(ctx->st, 0, NULL);
1619    } else if (flush_flag == __BLIT_FLAG_FINISH) {
1620       screen = dri_screen(ctx->sPriv)->base.screen;
1621       pipe->flush_resource(pipe, dst->texture);
1622       ctx->st->flush(ctx->st, 0, &fence);
1623       (void) screen->fence_finish(screen, NULL, fence, PIPE_TIMEOUT_INFINITE);
1624       screen->fence_reference(screen, &fence, NULL);
1625    }
1626 }
1627
1628 static void *
1629 dri2_map_image(__DRIcontext *context, __DRIimage *image,
1630                 int x0, int y0, int width, int height,
1631                 unsigned int flags, int *stride, void **data)
1632 {
1633    struct dri_context *ctx = dri_context(context);
1634    struct pipe_context *pipe = ctx->st->pipe;
1635    enum pipe_transfer_usage pipe_access = 0;
1636    struct pipe_transfer *trans;
1637    void *map;
1638
1639    if (!image || !data || *data)
1640       return NULL;
1641
1642    if (flags & __DRI_IMAGE_TRANSFER_READ)
1643          pipe_access |= PIPE_TRANSFER_READ;
1644    if (flags & __DRI_IMAGE_TRANSFER_WRITE)
1645          pipe_access |= PIPE_TRANSFER_WRITE;
1646
1647    map = pipe_transfer_map(pipe, image->texture,
1648                            0, 0, pipe_access, x0, y0, width, height,
1649                            &trans);
1650    if (map) {
1651       *data = trans;
1652       *stride = trans->stride;
1653    }
1654
1655    return map;
1656 }
1657
1658 static void
1659 dri2_unmap_image(__DRIcontext *context, __DRIimage *image, void *data)
1660 {
1661    struct dri_context *ctx = dri_context(context);
1662    struct pipe_context *pipe = ctx->st->pipe;
1663
1664    pipe_transfer_unmap(pipe, (struct pipe_transfer *)data);
1665 }
1666
1667 static int
1668 dri2_get_capabilities(__DRIscreen *_screen)
1669 {
1670    struct dri_screen *screen = dri_screen(_screen);
1671
1672    return (screen->can_share_buffer ? __DRI_IMAGE_CAP_GLOBAL_NAMES : 0);
1673 }
1674
1675 /* The extension is modified during runtime if DRI_PRIME is detected */
1676 static __DRIimageExtension dri2ImageExtension = {
1677     .base = { __DRI_IMAGE, 17 },
1678
1679     .createImageFromName          = dri2_create_image_from_name,
1680     .createImageFromRenderbuffer  = dri2_create_image_from_renderbuffer,
1681     .destroyImage                 = dri2_destroy_image,
1682     .createImage                  = dri2_create_image,
1683     .queryImage                   = dri2_query_image,
1684     .dupImage                     = dri2_dup_image,
1685     .validateUsage                = dri2_validate_usage,
1686     .createImageFromNames         = dri2_from_names,
1687     .fromPlanar                   = dri2_from_planar,
1688     .createImageFromTexture       = dri2_create_from_texture,
1689     .createImageFromFds           = NULL,
1690     .createImageFromDmaBufs       = NULL,
1691     .blitImage                    = dri2_blit_image,
1692     .getCapabilities              = dri2_get_capabilities,
1693     .mapImage                     = dri2_map_image,
1694     .unmapImage                   = dri2_unmap_image,
1695     .createImageWithModifiers     = NULL,
1696     .createImageFromDmaBufs2      = NULL,
1697     .queryDmaBufFormats           = NULL,
1698     .queryDmaBufModifiers         = NULL,
1699     .queryDmaBufFormatModifierAttribs = NULL,
1700     .createImageFromRenderbuffer2 = dri2_create_image_from_renderbuffer2,
1701 };
1702
1703 static const __DRIrobustnessExtension dri2Robustness = {
1704    .base = { __DRI2_ROBUSTNESS, 1 }
1705 };
1706
1707 static int
1708 dri2_interop_query_device_info(__DRIcontext *_ctx,
1709                                struct mesa_glinterop_device_info *out)
1710 {
1711    struct pipe_screen *screen = dri_context(_ctx)->st->pipe->screen;
1712
1713    /* There is no version 0, thus we do not support it */
1714    if (out->version == 0)
1715       return MESA_GLINTEROP_INVALID_VERSION;
1716
1717    out->pci_segment_group = screen->get_param(screen, PIPE_CAP_PCI_GROUP);
1718    out->pci_bus = screen->get_param(screen, PIPE_CAP_PCI_BUS);
1719    out->pci_device = screen->get_param(screen, PIPE_CAP_PCI_DEVICE);
1720    out->pci_function = screen->get_param(screen, PIPE_CAP_PCI_FUNCTION);
1721
1722    out->vendor_id = screen->get_param(screen, PIPE_CAP_VENDOR_ID);
1723    out->device_id = screen->get_param(screen, PIPE_CAP_DEVICE_ID);
1724
1725    /* Instruct the caller that we support up-to version one of the interface */
1726    out->version = 1;
1727
1728    return MESA_GLINTEROP_SUCCESS;
1729 }
1730
1731 static int
1732 dri2_interop_export_object(__DRIcontext *_ctx,
1733                            struct mesa_glinterop_export_in *in,
1734                            struct mesa_glinterop_export_out *out)
1735 {
1736    struct st_context_iface *st = dri_context(_ctx)->st;
1737    struct pipe_screen *screen = st->pipe->screen;
1738    struct gl_context *ctx = ((struct st_context *)st)->ctx;
1739    struct pipe_resource *res = NULL;
1740    struct winsys_handle whandle;
1741    unsigned target, usage;
1742    boolean success;
1743
1744    /* There is no version 0, thus we do not support it */
1745    if (in->version == 0 || out->version == 0)
1746       return MESA_GLINTEROP_INVALID_VERSION;
1747
1748    /* Validate the target. */
1749    switch (in->target) {
1750    case GL_TEXTURE_BUFFER:
1751    case GL_TEXTURE_1D:
1752    case GL_TEXTURE_2D:
1753    case GL_TEXTURE_3D:
1754    case GL_TEXTURE_RECTANGLE:
1755    case GL_TEXTURE_1D_ARRAY:
1756    case GL_TEXTURE_2D_ARRAY:
1757    case GL_TEXTURE_CUBE_MAP_ARRAY:
1758    case GL_TEXTURE_CUBE_MAP:
1759    case GL_TEXTURE_2D_MULTISAMPLE:
1760    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1761    case GL_TEXTURE_EXTERNAL_OES:
1762    case GL_RENDERBUFFER:
1763    case GL_ARRAY_BUFFER:
1764       target = in->target;
1765       break;
1766    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1767    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1768    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1769    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1770    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1771    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1772       target = GL_TEXTURE_CUBE_MAP;
1773       break;
1774    default:
1775       return MESA_GLINTEROP_INVALID_TARGET;
1776    }
1777
1778    /* Validate the simple case of miplevel. */
1779    if ((target == GL_RENDERBUFFER || target == GL_ARRAY_BUFFER) &&
1780        in->miplevel != 0)
1781       return MESA_GLINTEROP_INVALID_MIP_LEVEL;
1782
1783    /* Validate the OpenGL object and get pipe_resource. */
1784    simple_mtx_lock(&ctx->Shared->Mutex);
1785
1786    if (target == GL_ARRAY_BUFFER) {
1787       /* Buffer objects.
1788        *
1789        * The error checking is based on the documentation of
1790        * clCreateFromGLBuffer from OpenCL 2.0 SDK.
1791        */
1792       struct gl_buffer_object *buf = _mesa_lookup_bufferobj(ctx, in->obj);
1793
1794       /* From OpenCL 2.0 SDK, clCreateFromGLBuffer:
1795        *  "CL_INVALID_GL_OBJECT if bufobj is not a GL buffer object or is
1796        *   a GL buffer object but does not have an existing data store or
1797        *   the size of the buffer is 0."
1798        */
1799       if (!buf || buf->Size == 0) {
1800          simple_mtx_unlock(&ctx->Shared->Mutex);
1801          return MESA_GLINTEROP_INVALID_OBJECT;
1802       }
1803
1804       res = st_buffer_object(buf)->buffer;
1805       if (!res) {
1806          /* this shouldn't happen */
1807          simple_mtx_unlock(&ctx->Shared->Mutex);
1808          return MESA_GLINTEROP_INVALID_OBJECT;
1809       }
1810
1811       out->buf_offset = 0;
1812       out->buf_size = buf->Size;
1813
1814       buf->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
1815    } else if (target == GL_RENDERBUFFER) {
1816       /* Renderbuffers.
1817        *
1818        * The error checking is based on the documentation of
1819        * clCreateFromGLRenderbuffer from OpenCL 2.0 SDK.
1820        */
1821       struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, in->obj);
1822
1823       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1824        *   "CL_INVALID_GL_OBJECT if renderbuffer is not a GL renderbuffer
1825        *    object or if the width or height of renderbuffer is zero."
1826        */
1827       if (!rb || rb->Width == 0 || rb->Height == 0) {
1828          simple_mtx_unlock(&ctx->Shared->Mutex);
1829          return MESA_GLINTEROP_INVALID_OBJECT;
1830       }
1831
1832       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1833        *   "CL_INVALID_OPERATION if renderbuffer is a multi-sample GL
1834        *    renderbuffer object."
1835        */
1836       if (rb->NumSamples > 1) {
1837          simple_mtx_unlock(&ctx->Shared->Mutex);
1838          return MESA_GLINTEROP_INVALID_OPERATION;
1839       }
1840
1841       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1842        *   "CL_OUT_OF_RESOURCES if there is a failure to allocate resources
1843        *    required by the OpenCL implementation on the device."
1844        */
1845       res = st_renderbuffer(rb)->texture;
1846       if (!res) {
1847          simple_mtx_unlock(&ctx->Shared->Mutex);
1848          return MESA_GLINTEROP_OUT_OF_RESOURCES;
1849       }
1850
1851       out->internal_format = rb->InternalFormat;
1852       out->view_minlevel = 0;
1853       out->view_numlevels = 1;
1854       out->view_minlayer = 0;
1855       out->view_numlayers = 1;
1856    } else {
1857       /* Texture objects.
1858        *
1859        * The error checking is based on the documentation of
1860        * clCreateFromGLTexture from OpenCL 2.0 SDK.
1861        */
1862       struct gl_texture_object *obj = _mesa_lookup_texture(ctx, in->obj);
1863
1864       if (obj)
1865          _mesa_test_texobj_completeness(ctx, obj);
1866
1867       /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
1868        *   "CL_INVALID_GL_OBJECT if texture is not a GL texture object whose
1869        *    type matches texture_target, if the specified miplevel of texture
1870        *    is not defined, or if the width or height of the specified
1871        *    miplevel is zero or if the GL texture object is incomplete."
1872        */
1873       if (!obj ||
1874           obj->Target != target ||
1875           !obj->_BaseComplete ||
1876           (in->miplevel > 0 && !obj->_MipmapComplete)) {
1877          simple_mtx_unlock(&ctx->Shared->Mutex);
1878          return MESA_GLINTEROP_INVALID_OBJECT;
1879       }
1880
1881       if (target == GL_TEXTURE_BUFFER) {
1882          struct st_buffer_object *stBuf =
1883             st_buffer_object(obj->BufferObject);
1884
1885          if (!stBuf || !stBuf->buffer) {
1886             /* this shouldn't happen */
1887             simple_mtx_unlock(&ctx->Shared->Mutex);
1888             return MESA_GLINTEROP_INVALID_OBJECT;
1889          }
1890          res = stBuf->buffer;
1891
1892          out->internal_format = obj->BufferObjectFormat;
1893          out->buf_offset = obj->BufferOffset;
1894          out->buf_size = obj->BufferSize == -1 ? obj->BufferObject->Size :
1895                                                  obj->BufferSize;
1896
1897          obj->BufferObject->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
1898       } else {
1899          /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
1900           *   "CL_INVALID_MIP_LEVEL if miplevel is less than the value of
1901           *    levelbase (for OpenGL implementations) or zero (for OpenGL ES
1902           *    implementations); or greater than the value of q (for both OpenGL
1903           *    and OpenGL ES). levelbase and q are defined for the texture in
1904           *    section 3.8.10 (Texture Completeness) of the OpenGL 2.1
1905           *    specification and section 3.7.10 of the OpenGL ES 2.0."
1906           */
1907          if (in->miplevel < obj->BaseLevel || in->miplevel > obj->_MaxLevel) {
1908             simple_mtx_unlock(&ctx->Shared->Mutex);
1909             return MESA_GLINTEROP_INVALID_MIP_LEVEL;
1910          }
1911
1912          if (!st_finalize_texture(ctx, st->pipe, obj, 0)) {
1913             simple_mtx_unlock(&ctx->Shared->Mutex);
1914             return MESA_GLINTEROP_OUT_OF_RESOURCES;
1915          }
1916
1917          res = st_get_texobj_resource(obj);
1918          if (!res) {
1919             /* Incomplete texture buffer object? This shouldn't really occur. */
1920             simple_mtx_unlock(&ctx->Shared->Mutex);
1921             return MESA_GLINTEROP_INVALID_OBJECT;
1922          }
1923
1924          out->internal_format = obj->Image[0][0]->InternalFormat;
1925          out->view_minlevel = obj->MinLevel;
1926          out->view_numlevels = obj->NumLevels;
1927          out->view_minlayer = obj->MinLayer;
1928          out->view_numlayers = obj->NumLayers;
1929       }
1930    }
1931
1932    /* Get the handle. */
1933    switch (in->access) {
1934    case MESA_GLINTEROP_ACCESS_READ_WRITE:
1935       usage = PIPE_HANDLE_USAGE_READ_WRITE;
1936       break;
1937    case MESA_GLINTEROP_ACCESS_READ_ONLY:
1938       usage = PIPE_HANDLE_USAGE_READ;
1939       break;
1940    case MESA_GLINTEROP_ACCESS_WRITE_ONLY:
1941       usage = PIPE_HANDLE_USAGE_WRITE;
1942       break;
1943    default:
1944       usage = 0;
1945    }
1946
1947    memset(&whandle, 0, sizeof(whandle));
1948    whandle.type = WINSYS_HANDLE_TYPE_FD;
1949
1950    success = screen->resource_get_handle(screen, st->pipe, res, &whandle,
1951                                          usage);
1952    simple_mtx_unlock(&ctx->Shared->Mutex);
1953
1954    if (!success)
1955       return MESA_GLINTEROP_OUT_OF_HOST_MEMORY;
1956
1957    out->dmabuf_fd = whandle.handle;
1958    out->out_driver_data_written = 0;
1959
1960    if (res->target == PIPE_BUFFER)
1961       out->buf_offset += whandle.offset;
1962
1963    /* Instruct the caller that we support up-to version one of the interface */
1964    in->version = 1;
1965    out->version = 1;
1966
1967    return MESA_GLINTEROP_SUCCESS;
1968 }
1969
1970 static const __DRI2interopExtension dri2InteropExtension = {
1971    .base = { __DRI2_INTEROP, 1 },
1972    .query_device_info = dri2_interop_query_device_info,
1973    .export_object = dri2_interop_export_object
1974 };
1975
1976 /**
1977  * \brief the DRI2ConfigQueryExtension configQueryb method
1978  */
1979 static int
1980 dri2GalliumConfigQueryb(__DRIscreen *sPriv, const char *var,
1981                         unsigned char *val)
1982 {
1983    struct dri_screen *screen = dri_screen(sPriv);
1984
1985    if (!driCheckOption(&screen->dev->option_cache, var, DRI_BOOL))
1986       return dri2ConfigQueryExtension.configQueryb(sPriv, var, val);
1987
1988    *val = driQueryOptionb(&screen->dev->option_cache, var);
1989
1990    return 0;
1991 }
1992
1993 /**
1994  * \brief the DRI2ConfigQueryExtension configQueryi method
1995  */
1996 static int
1997 dri2GalliumConfigQueryi(__DRIscreen *sPriv, const char *var, int *val)
1998 {
1999    struct dri_screen *screen = dri_screen(sPriv);
2000
2001    if (!driCheckOption(&screen->dev->option_cache, var, DRI_INT) &&
2002        !driCheckOption(&screen->dev->option_cache, var, DRI_ENUM))
2003       return dri2ConfigQueryExtension.configQueryi(sPriv, var, val);
2004
2005     *val = driQueryOptioni(&screen->dev->option_cache, var);
2006
2007     return 0;
2008 }
2009
2010 /**
2011  * \brief the DRI2ConfigQueryExtension configQueryf method
2012  */
2013 static int
2014 dri2GalliumConfigQueryf(__DRIscreen *sPriv, const char *var, float *val)
2015 {
2016    struct dri_screen *screen = dri_screen(sPriv);
2017
2018    if (!driCheckOption(&screen->dev->option_cache, var, DRI_FLOAT))
2019       return dri2ConfigQueryExtension.configQueryf(sPriv, var, val);
2020
2021     *val = driQueryOptionf(&screen->dev->option_cache, var);
2022
2023     return 0;
2024 }
2025
2026 /**
2027  * \brief the DRI2ConfigQueryExtension struct.
2028  *
2029  * We first query the driver option cache. Then the dri2 option cache.
2030  */
2031 static const __DRI2configQueryExtension dri2GalliumConfigQueryExtension = {
2032    .base = { __DRI2_CONFIG_QUERY, 1 },
2033
2034    .configQueryb        = dri2GalliumConfigQueryb,
2035    .configQueryi        = dri2GalliumConfigQueryi,
2036    .configQueryf        = dri2GalliumConfigQueryf,
2037 };
2038
2039 /*
2040  * Backend function init_screen.
2041  */
2042
2043 static const __DRIextension *dri_screen_extensions[] = {
2044    &driTexBufferExtension.base,
2045    &dri2FlushExtension.base,
2046    &dri2ImageExtension.base,
2047    &dri2RendererQueryExtension.base,
2048    &dri2GalliumConfigQueryExtension.base,
2049    &dri2ThrottleExtension.base,
2050    &dri2FenceExtension.base,
2051    &dri2InteropExtension.base,
2052    &dri2NoErrorExtension.base,
2053    NULL
2054 };
2055
2056 static const __DRIextension *dri_robust_screen_extensions[] = {
2057    &driTexBufferExtension.base,
2058    &dri2FlushExtension.base,
2059    &dri2ImageExtension.base,
2060    &dri2RendererQueryExtension.base,
2061    &dri2GalliumConfigQueryExtension.base,
2062    &dri2ThrottleExtension.base,
2063    &dri2FenceExtension.base,
2064    &dri2InteropExtension.base,
2065    &dri2Robustness.base,
2066    &dri2NoErrorExtension.base,
2067    NULL
2068 };
2069
2070 /**
2071  * This is the driver specific part of the createNewScreen entry point.
2072  *
2073  * Returns the struct gl_config supported by this driver.
2074  */
2075 static const __DRIconfig **
2076 dri2_init_screen(__DRIscreen * sPriv)
2077 {
2078    const __DRIconfig **configs;
2079    struct dri_screen *screen;
2080    struct pipe_screen *pscreen = NULL;
2081    const struct drm_conf_ret *throttle_ret;
2082    const struct drm_conf_ret *dmabuf_ret;
2083    int fd;
2084
2085    screen = CALLOC_STRUCT(dri_screen);
2086    if (!screen)
2087       return NULL;
2088
2089    screen->sPriv = sPriv;
2090    screen->fd = sPriv->fd;
2091    (void) mtx_init(&screen->opencl_func_mutex, mtx_plain);
2092
2093    sPriv->driverPrivate = (void *)screen;
2094
2095    if (screen->fd < 0 || (fd = fcntl(screen->fd, F_DUPFD_CLOEXEC, 3)) < 0)
2096       goto free_screen;
2097
2098
2099    if (pipe_loader_drm_probe_fd(&screen->dev, fd)) {
2100       dri_init_options(screen);
2101
2102       pscreen = pipe_loader_create_screen(screen->dev);
2103    }
2104
2105    if (!pscreen)
2106        goto release_pipe;
2107
2108    throttle_ret = pipe_loader_configuration(screen->dev, DRM_CONF_THROTTLE);
2109    dmabuf_ret = pipe_loader_configuration(screen->dev, DRM_CONF_SHARE_FD);
2110
2111    if (throttle_ret && throttle_ret->val.val_int != -1) {
2112       screen->throttling_enabled = TRUE;
2113       screen->default_throttle_frames = throttle_ret->val.val_int;
2114    }
2115
2116    if (pscreen->resource_create_with_modifiers)
2117       dri2ImageExtension.createImageWithModifiers =
2118          dri2_create_image_with_modifiers;
2119
2120    if (dmabuf_ret && dmabuf_ret->val.val_bool) {
2121       uint64_t cap;
2122
2123       if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&
2124           (cap & DRM_PRIME_CAP_IMPORT)) {
2125          dri2ImageExtension.createImageFromFds = dri2_from_fds;
2126          dri2ImageExtension.createImageFromDmaBufs = dri2_from_dma_bufs;
2127          dri2ImageExtension.createImageFromDmaBufs2 = dri2_from_dma_bufs2;
2128          if (pscreen->query_dmabuf_modifiers) {
2129             dri2ImageExtension.queryDmaBufFormats = dri2_query_dma_buf_formats;
2130             dri2ImageExtension.queryDmaBufModifiers =
2131                                        dri2_query_dma_buf_modifiers;
2132          }
2133       }
2134    }
2135
2136    if (pscreen->get_param(pscreen, PIPE_CAP_DEVICE_RESET_STATUS_QUERY)) {
2137       sPriv->extensions = dri_robust_screen_extensions;
2138       screen->has_reset_status_query = true;
2139    }
2140    else
2141       sPriv->extensions = dri_screen_extensions;
2142
2143    configs = dri_init_screen_helper(screen, pscreen);
2144    if (!configs)
2145       goto destroy_screen;
2146
2147    screen->can_share_buffer = true;
2148    screen->auto_fake_front = dri_with_format(sPriv);
2149    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
2150    screen->lookup_egl_image = dri2_lookup_egl_image;
2151
2152    return configs;
2153
2154 destroy_screen:
2155    dri_destroy_screen_helper(screen);
2156
2157 release_pipe:
2158    if (screen->dev)
2159       pipe_loader_release(&screen->dev, 1);
2160    else
2161       close(fd);
2162
2163 free_screen:
2164    FREE(screen);
2165    return NULL;
2166 }
2167
2168 /**
2169  * This is the driver specific part of the createNewScreen entry point.
2170  *
2171  * Returns the struct gl_config supported by this driver.
2172  */
2173 static const __DRIconfig **
2174 dri_kms_init_screen(__DRIscreen * sPriv)
2175 {
2176 #if defined(GALLIUM_SOFTPIPE)
2177    const __DRIconfig **configs;
2178    struct dri_screen *screen;
2179    struct pipe_screen *pscreen = NULL;
2180    uint64_t cap;
2181    int fd;
2182
2183    screen = CALLOC_STRUCT(dri_screen);
2184    if (!screen)
2185       return NULL;
2186
2187    screen->sPriv = sPriv;
2188    screen->fd = sPriv->fd;
2189
2190    sPriv->driverPrivate = (void *)screen;
2191
2192    if (screen->fd < 0 || (fd = fcntl(screen->fd, F_DUPFD_CLOEXEC, 3)) < 0)
2193       goto free_screen;
2194
2195    if (pipe_loader_sw_probe_kms(&screen->dev, fd)) {
2196       dri_init_options(screen);
2197       pscreen = pipe_loader_create_screen(screen->dev);
2198    }
2199
2200    if (!pscreen)
2201        goto release_pipe;
2202
2203    if (pscreen->resource_create_with_modifiers)
2204       dri2ImageExtension.createImageWithModifiers =
2205          dri2_create_image_with_modifiers;
2206
2207    if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&
2208           (cap & DRM_PRIME_CAP_IMPORT)) {
2209       dri2ImageExtension.createImageFromFds = dri2_from_fds;
2210       dri2ImageExtension.createImageFromDmaBufs = dri2_from_dma_bufs;
2211       dri2ImageExtension.createImageFromDmaBufs2 = dri2_from_dma_bufs2;
2212       dri2ImageExtension.queryDmaBufFormats = dri2_query_dma_buf_formats;
2213       dri2ImageExtension.queryDmaBufModifiers = dri2_query_dma_buf_modifiers;
2214    }
2215
2216    sPriv->extensions = dri_screen_extensions;
2217
2218    configs = dri_init_screen_helper(screen, pscreen);
2219    if (!configs)
2220       goto destroy_screen;
2221
2222    screen->can_share_buffer = false;
2223    screen->auto_fake_front = dri_with_format(sPriv);
2224    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
2225    screen->lookup_egl_image = dri2_lookup_egl_image;
2226
2227    return configs;
2228
2229 destroy_screen:
2230    dri_destroy_screen_helper(screen);
2231
2232 release_pipe:
2233    if (screen->dev)
2234       pipe_loader_release(&screen->dev, 1);
2235    else
2236       close(fd);
2237
2238 free_screen:
2239    FREE(screen);
2240 #endif // GALLIUM_SOFTPIPE
2241    return NULL;
2242 }
2243
2244 static boolean
2245 dri2_create_buffer(__DRIscreen * sPriv,
2246                    __DRIdrawable * dPriv,
2247                    const struct gl_config * visual, boolean isPixmap)
2248 {
2249    struct dri_drawable *drawable = NULL;
2250
2251    if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
2252       return FALSE;
2253
2254    drawable = dPriv->driverPrivate;
2255
2256    drawable->allocate_textures = dri2_allocate_textures;
2257    drawable->flush_frontbuffer = dri2_flush_frontbuffer;
2258    drawable->update_tex_buffer = dri2_update_tex_buffer;
2259    drawable->flush_swapbuffers = dri2_flush_swapbuffers;
2260
2261    return TRUE;
2262 }
2263
2264 /**
2265  * DRI driver virtual function table.
2266  *
2267  * DRI versions differ in their implementation of init_screen and swap_buffers.
2268  */
2269 const struct __DriverAPIRec galliumdrm_driver_api = {
2270    .InitScreen = dri2_init_screen,
2271    .DestroyScreen = dri_destroy_screen,
2272    .CreateContext = dri_create_context,
2273    .DestroyContext = dri_destroy_context,
2274    .CreateBuffer = dri2_create_buffer,
2275    .DestroyBuffer = dri_destroy_buffer,
2276    .MakeCurrent = dri_make_current,
2277    .UnbindContext = dri_unbind_context,
2278
2279    .AllocateBuffer = dri2_allocate_buffer,
2280    .ReleaseBuffer  = dri2_release_buffer,
2281 };
2282
2283 /**
2284  * DRI driver virtual function table.
2285  *
2286  * KMS/DRM version of the DriverAPI above sporting a different InitScreen
2287  * hook. The latter is used to explicitly initialise the kms_swrast driver
2288  * rather than selecting the approapriate driver as suggested by the loader.
2289  */
2290 const struct __DriverAPIRec dri_kms_driver_api = {
2291    .InitScreen = dri_kms_init_screen,
2292    .DestroyScreen = dri_destroy_screen,
2293    .CreateContext = dri_create_context,
2294    .DestroyContext = dri_destroy_context,
2295    .CreateBuffer = dri2_create_buffer,
2296    .DestroyBuffer = dri_destroy_buffer,
2297    .MakeCurrent = dri_make_current,
2298    .UnbindContext = dri_unbind_context,
2299
2300    .AllocateBuffer = dri2_allocate_buffer,
2301    .ReleaseBuffer  = dri2_release_buffer,
2302 };
2303
2304 /* This is the table of extensions that the loader will dlsym() for. */
2305 const __DRIextension *galliumdrm_driver_extensions[] = {
2306     &driCoreExtension.base,
2307     &driImageDriverExtension.base,
2308     &driDRI2Extension.base,
2309     &gallium_config_options.base,
2310     NULL
2311 };
2312
2313 /* vim: set sw=3 ts=8 sts=3 expandtab: */