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 <dlfcn.h>
  33 #include <fcntl.h>
  34 #include "GL/mesa_glinterop.h"
  35 #include "util/u_memory.h"
  36 #include "util/u_inlines.h"
  37 #include "util/u_format.h"
  38 #include "util/u_debug.h"
  39 #include "state_tracker/drm_driver.h"
  40 #include "state_tracker/st_cb_bufferobjects.h"
  41 #include "state_tracker/st_cb_fbo.h"
  42 #include "state_tracker/st_cb_texture.h"
  43 #include "state_tracker/st_texture.h"
  44 #include "state_tracker/st_context.h"
  45 #include "pipe-loader/pipe_loader.h"
  46 #include "main/bufferobj.h"
  47 #include "main/texobj.h"
  48
  49 #include "dri_screen.h"
  50 #include "dri_context.h"
  51 #include "dri_drawable.h"
  52 #include "dri_query_renderer.h"
  53 #include "dri2_buffer.h"
  54
  55 static int convert_fourcc(int format, int *dri_components_p)
  56 {
  57    int dri_components;
  58    switch(format) {
  59    case __DRI_IMAGE_FOURCC_RGB565:
  60       format = __DRI_IMAGE_FORMAT_RGB565;
  61       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
  62       break;
  63    case __DRI_IMAGE_FOURCC_ARGB8888:
  64       format = __DRI_IMAGE_FORMAT_ARGB8888;
  65       dri_components = __DRI_IMAGE_COMPONENTS_RGBA;
  66       break;
  67    case __DRI_IMAGE_FOURCC_XRGB8888:
  68       format = __DRI_IMAGE_FORMAT_XRGB8888;
  69       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
  70       break;
  71    case __DRI_IMAGE_FOURCC_ABGR8888:
  72       format = __DRI_IMAGE_FORMAT_ABGR8888;
  73       dri_components = __DRI_IMAGE_COMPONENTS_RGBA;
  74       break;
  75    case __DRI_IMAGE_FOURCC_XBGR8888:
  76       format = __DRI_IMAGE_FORMAT_XBGR8888;
  77       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
  78       break;
  79    case __DRI_IMAGE_FOURCC_R8:
  80       format = __DRI_IMAGE_FORMAT_R8;
  81       dri_components = __DRI_IMAGE_COMPONENTS_R;
  82       break;
  83    case __DRI_IMAGE_FOURCC_GR88:
  84       format = __DRI_IMAGE_FORMAT_GR88;
  85       dri_components = __DRI_IMAGE_COMPONENTS_RG;
  86       break;
  87    /*
  88     * For multi-planar YUV formats, we return the format of the first
  89     * plane only.  Since there is only one caller which supports multi-
  90     * planar YUV it gets to figure out the remaining planes on it's
  91     * own.
  92     */
  93    case __DRI_IMAGE_FOURCC_YUV420:
  94    case __DRI_IMAGE_FOURCC_YVU420:
  95       format = __DRI_IMAGE_FORMAT_R8;
  96       dri_components = __DRI_IMAGE_COMPONENTS_Y_U_V;
  97       break;
  98    case __DRI_IMAGE_FOURCC_NV12:
  99       format = __DRI_IMAGE_FORMAT_R8;
 100       dri_components = __DRI_IMAGE_COMPONENTS_Y_UV;
 101       break;
 102    default:
 103       return -1;
 104    }
 105    *dri_components_p = dri_components;
 106    return format;
 107 }
 108
 109 /* NOTE this probably isn't going to do the right thing for YUV images
 110  * (but I think the same can be said for intel_query_image()).  I think
 111  * only needed for exporting dmabuf's, so I think I won't loose much
 112  * sleep over it.
 113  */
 114 static int convert_to_fourcc(int format)
 115 {
 116    switch(format) {
 117    case __DRI_IMAGE_FORMAT_RGB565:
 118       format = __DRI_IMAGE_FOURCC_RGB565;
 119       break;
 120    case __DRI_IMAGE_FORMAT_ARGB8888:
 121       format = __DRI_IMAGE_FOURCC_ARGB8888;
 122       break;
 123    case __DRI_IMAGE_FORMAT_XRGB8888:
 124       format = __DRI_IMAGE_FOURCC_XRGB8888;
 125       break;
 126    case __DRI_IMAGE_FORMAT_ABGR8888:
 127       format = __DRI_IMAGE_FOURCC_ABGR8888;
 128       break;
 129    case __DRI_IMAGE_FORMAT_XBGR8888:
 130       format = __DRI_IMAGE_FOURCC_XBGR8888;
 131       break;
 132    case __DRI_IMAGE_FORMAT_R8:
 133       format = __DRI_IMAGE_FOURCC_R8;
 134       break;
 135    case __DRI_IMAGE_FORMAT_GR88:
 136       format = __DRI_IMAGE_FOURCC_GR88;
 137       break;
 138    default:
 139       return -1;
 140    }
 141    return format;
 142 }
 143
 144 static enum pipe_format dri2_format_to_pipe_format (int format)
 145 {
 146    enum pipe_format pf;
 147
 148    switch (format) {
 149    case __DRI_IMAGE_FORMAT_RGB565:
 150       pf = PIPE_FORMAT_B5G6R5_UNORM;
 151       break;
 152    case __DRI_IMAGE_FORMAT_XRGB8888:
 153       pf = PIPE_FORMAT_BGRX8888_UNORM;
 154       break;
 155    case __DRI_IMAGE_FORMAT_ARGB8888:
 156       pf = PIPE_FORMAT_BGRA8888_UNORM;
 157       break;
 158    case __DRI_IMAGE_FORMAT_ABGR8888:
 159       pf = PIPE_FORMAT_RGBA8888_UNORM;
 160       break;
 161    case __DRI_IMAGE_FORMAT_R8:
 162       pf = PIPE_FORMAT_R8_UNORM;
 163       break;
 164    case __DRI_IMAGE_FORMAT_GR88:
 165       pf = PIPE_FORMAT_RG88_UNORM;
 166       break;
 167    default:
 168       pf = PIPE_FORMAT_NONE;
 169       break;
 170    }
 171
 172    return pf;
 173 }
 174
 175 /**
 176  * DRI2 flush extension.
 177  */
 178 static void
 179 dri2_flush_drawable(__DRIdrawable *dPriv)
 180 {
 181    dri_flush(dPriv->driContextPriv, dPriv, __DRI2_FLUSH_DRAWABLE, -1);
 182 }
 183
 184 static void
 185 dri2_invalidate_drawable(__DRIdrawable *dPriv)
 186 {
 187    struct dri_drawable *drawable = dri_drawable(dPriv);
 188
 189    dri2InvalidateDrawable(dPriv);
 190    drawable->dPriv->lastStamp = drawable->dPriv->dri2.stamp;
 191    drawable->texture_mask = 0;
 192
 193    p_atomic_inc(&drawable->base.stamp);
 194 }
 195
 196 static const __DRI2flushExtension dri2FlushExtension = {
 197     .base = { __DRI2_FLUSH, 4 },
 198
 199     .flush                = dri2_flush_drawable,
 200     .invalidate           = dri2_invalidate_drawable,
 201     .flush_with_flags     = dri_flush,
 202 };
 203
 204 /**
 205  * Retrieve __DRIbuffer from the DRI loader.
 206  */
 207 static __DRIbuffer *
 208 dri2_drawable_get_buffers(struct dri_drawable *drawable,
 209                           const enum st_attachment_type *atts,
 210                           unsigned *count)
 211 {
 212    __DRIdrawable *dri_drawable = drawable->dPriv;
 213    const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
 214    boolean with_format;
 215    __DRIbuffer *buffers;
 216    int num_buffers;
 217    unsigned attachments[10];
 218    unsigned num_attachments, i;
 219
 220    assert(loader);
 221    with_format = dri_with_format(drawable->sPriv);
 222
 223    num_attachments = 0;
 224
 225    /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
 226    if (!with_format)
 227       attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
 228
 229    for (i = 0; i < *count; i++) {
 230       enum pipe_format format;
 231       unsigned bind;
 232       int att, depth;
 233
 234       dri_drawable_get_format(drawable, atts[i], &format, &bind);
 235       if (format == PIPE_FORMAT_NONE)
 236          continue;
 237
 238       switch (atts[i]) {
 239       case ST_ATTACHMENT_FRONT_LEFT:
 240          /* already added */
 241          if (!with_format)
 242             continue;
 243          att = __DRI_BUFFER_FRONT_LEFT;
 244          break;
 245       case ST_ATTACHMENT_BACK_LEFT:
 246          att = __DRI_BUFFER_BACK_LEFT;
 247          break;
 248       case ST_ATTACHMENT_FRONT_RIGHT:
 249          att = __DRI_BUFFER_FRONT_RIGHT;
 250          break;
 251       case ST_ATTACHMENT_BACK_RIGHT:
 252          att = __DRI_BUFFER_BACK_RIGHT;
 253          break;
 254       default:
 255          continue;
 256       }
 257
 258       /*
 259        * In this switch statement we must support all formats that
 260        * may occur as the stvis->color_format.
 261        */
 262       switch(format) {
 263       case PIPE_FORMAT_BGRA8888_UNORM:
 264          depth = 32;
 265          break;
 266       case PIPE_FORMAT_BGRX8888_UNORM:
 267          depth = 24;
 268          break;
 269       case PIPE_FORMAT_B5G6R5_UNORM:
 270          depth = 16;
 271          break;
 272       default:
 273          depth = util_format_get_blocksizebits(format);
 274          assert(!"Unexpected format in dri2_drawable_get_buffers()");
 275       }
 276
 277       attachments[num_attachments++] = att;
 278       if (with_format) {
 279          attachments[num_attachments++] = depth;
 280       }
 281    }
 282
 283    if (with_format) {
 284       num_attachments /= 2;
 285       buffers = loader->getBuffersWithFormat(dri_drawable,
 286             &dri_drawable->w, &dri_drawable->h,
 287             attachments, num_attachments,
 288             &num_buffers, dri_drawable->loaderPrivate);
 289    }
 290    else {
 291       buffers = loader->getBuffers(dri_drawable,
 292             &dri_drawable->w, &dri_drawable->h,
 293             attachments, num_attachments,
 294             &num_buffers, dri_drawable->loaderPrivate);
 295    }
 296
 297    if (buffers)
 298       *count = num_buffers;
 299
 300    return buffers;
 301 }
 302
 303 static bool
 304 dri_image_drawable_get_buffers(struct dri_drawable *drawable,
 305                                struct __DRIimageList *images,
 306                                const enum st_attachment_type *statts,
 307                                unsigned statts_count)
 308 {
 309    __DRIdrawable *dPriv = drawable->dPriv;
 310    __DRIscreen *sPriv = drawable->sPriv;
 311    unsigned int image_format = __DRI_IMAGE_FORMAT_NONE;
 312    enum pipe_format pf;
 313    uint32_t buffer_mask = 0;
 314    unsigned i, bind;
 315
 316    for (i = 0; i < statts_count; i++) {
 317       dri_drawable_get_format(drawable, statts[i], &pf, &bind);
 318       if (pf == PIPE_FORMAT_NONE)
 319          continue;
 320
 321       switch (statts[i]) {
 322       case ST_ATTACHMENT_FRONT_LEFT:
 323          buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
 324          break;
 325       case ST_ATTACHMENT_BACK_LEFT:
 326          buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
 327          break;
 328       default:
 329          continue;
 330       }
 331
 332       switch (pf) {
 333       case PIPE_FORMAT_B5G6R5_UNORM:
 334          image_format = __DRI_IMAGE_FORMAT_RGB565;
 335          break;
 336       case PIPE_FORMAT_BGRX8888_UNORM:
 337          image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 338          break;
 339       case PIPE_FORMAT_BGRA8888_UNORM:
 340          image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 341          break;
 342       case PIPE_FORMAT_RGBA8888_UNORM:
 343          image_format = __DRI_IMAGE_FORMAT_ABGR8888;
 344          break;
 345       default:
 346          image_format = __DRI_IMAGE_FORMAT_NONE;
 347          break;
 348       }
 349    }
 350
 351    return (*sPriv->image.loader->getBuffers) (dPriv, image_format,
 352                                        (uint32_t *) &drawable->base.stamp,
 353                                        dPriv->loaderPrivate, buffer_mask,
 354                                        images);
 355 }
 356
 357 static __DRIbuffer *
 358 dri2_allocate_buffer(__DRIscreen *sPriv,
 359                      unsigned attachment, unsigned format,
 360                      int width, int height)
 361 {
 362    struct dri_screen *screen = dri_screen(sPriv);
 363    struct dri2_buffer *buffer;
 364    struct pipe_resource templ;
 365    enum pipe_format pf;
 366    unsigned bind = 0;
 367    struct winsys_handle whandle;
 368
 369    switch (attachment) {
 370       case __DRI_BUFFER_FRONT_LEFT:
 371       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 372          bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 373          break;
 374       case __DRI_BUFFER_BACK_LEFT:
 375          bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 376          break;
 377       case __DRI_BUFFER_DEPTH:
 378       case __DRI_BUFFER_DEPTH_STENCIL:
 379       case __DRI_BUFFER_STENCIL:
 380             bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
 381          break;
 382    }
 383
 384    /* because we get the handle and stride */
 385    bind |= PIPE_BIND_SHARED;
 386
 387    switch (format) {
 388       case 32:
 389          pf = PIPE_FORMAT_BGRA8888_UNORM;
 390          break;
 391       case 24:
 392          pf = PIPE_FORMAT_BGRX8888_UNORM;
 393          break;
 394       case 16:
 395          pf = PIPE_FORMAT_Z16_UNORM;
 396          break;
 397       default:
 398          return NULL;
 399    }
 400
 401    buffer = CALLOC_STRUCT(dri2_buffer);
 402    if (!buffer)
 403       return NULL;
 404
 405    memset(&templ, 0, sizeof(templ));
 406    templ.bind = bind;
 407    templ.format = pf;
 408    templ.target = PIPE_TEXTURE_2D;
 409    templ.last_level = 0;
 410    templ.width0 = width;
 411    templ.height0 = height;
 412    templ.depth0 = 1;
 413    templ.array_size = 1;
 414
 415    buffer->resource =
 416       screen->base.screen->resource_create(screen->base.screen, &templ);
 417    if (!buffer->resource) {
 418       FREE(buffer);
 419       return NULL;
 420    }
 421
 422    memset(&whandle, 0, sizeof(whandle));
 423    if (screen->can_share_buffer)
 424       whandle.type = DRM_API_HANDLE_TYPE_SHARED;
 425    else
 426       whandle.type = DRM_API_HANDLE_TYPE_KMS;
 427
 428    screen->base.screen->resource_get_handle(screen->base.screen, NULL,
 429          buffer->resource, &whandle,
 430          PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ);
 431
 432    buffer->base.attachment = attachment;
 433    buffer->base.name = whandle.handle;
 434    buffer->base.cpp = util_format_get_blocksize(pf);
 435    buffer->base.pitch = whandle.stride;
 436
 437    return &buffer->base;
 438 }
 439
 440 static void
 441 dri2_release_buffer(__DRIscreen *sPriv, __DRIbuffer *bPriv)
 442 {
 443    struct dri2_buffer *buffer = dri2_buffer(bPriv);
 444
 445    pipe_resource_reference(&buffer->resource, NULL);
 446    FREE(buffer);
 447 }
 448
 449 /*
 450  * Backend functions for st_framebuffer interface.
 451  */
 452
 453 static void
 454 dri2_allocate_textures(struct dri_context *ctx,
 455                        struct dri_drawable *drawable,
 456                        const enum st_attachment_type *statts,
 457                        unsigned statts_count)
 458 {
 459    __DRIscreen *sPriv = drawable->sPriv;
 460    __DRIdrawable *dri_drawable = drawable->dPriv;
 461    struct dri_screen *screen = dri_screen(sPriv);
 462    struct pipe_resource templ;
 463    boolean alloc_depthstencil = FALSE;
 464    unsigned i, j, bind;
 465    const __DRIimageLoaderExtension *image = sPriv->image.loader;
 466    /* Image specific variables */
 467    struct __DRIimageList images;
 468    /* Dri2 specific variables */
 469    __DRIbuffer *buffers = NULL;
 470    struct winsys_handle whandle;
 471    unsigned num_buffers = statts_count;
 472
 473    /* First get the buffers from the loader */
 474    if (image) {
 475       if (!dri_image_drawable_get_buffers(drawable, &images,
 476                                           statts, statts_count))
 477          return;
 478    }
 479    else {
 480       buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
 481       if (!buffers || (drawable->old_num == num_buffers &&
 482                        drawable->old_w == dri_drawable->w &&
 483                        drawable->old_h == dri_drawable->h &&
 484                        memcmp(drawable->old, buffers,
 485                               sizeof(__DRIbuffer) * num_buffers) == 0))
 486          return;
 487    }
 488
 489    /* Second clean useless resources*/
 490
 491    /* See if we need a depth-stencil buffer. */
 492    for (i = 0; i < statts_count; i++) {
 493       if (statts[i] == ST_ATTACHMENT_DEPTH_STENCIL) {
 494          alloc_depthstencil = TRUE;
 495          break;
 496       }
 497    }
 498
 499    /* Delete the resources we won't need. */
 500    for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
 501       /* Don't delete the depth-stencil buffer, we can reuse it. */
 502       if (i == ST_ATTACHMENT_DEPTH_STENCIL && alloc_depthstencil)
 503          continue;
 504
 505       /* Flush the texture before unreferencing, so that other clients can
 506        * see what the driver has rendered.
 507        */
 508       if (i != ST_ATTACHMENT_DEPTH_STENCIL && drawable->textures[i]) {
 509          struct pipe_context *pipe = ctx->st->pipe;
 510          pipe->flush_resource(pipe, drawable->textures[i]);
 511       }
 512
 513       pipe_resource_reference(&drawable->textures[i], NULL);
 514    }
 515
 516    if (drawable->stvis.samples > 1) {
 517       for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
 518          boolean del = TRUE;
 519
 520          /* Don't delete MSAA resources for the attachments which are enabled,
 521           * we can reuse them. */
 522          for (j = 0; j < statts_count; j++) {
 523             if (i == statts[j]) {
 524                del = FALSE;
 525                break;
 526             }
 527          }
 528
 529          if (del) {
 530             pipe_resource_reference(&drawable->msaa_textures[i], NULL);
 531          }
 532       }
 533    }
 534
 535    /* Third use the buffers retrieved to fill the drawable info */
 536
 537    memset(&templ, 0, sizeof(templ));
 538    templ.target = screen->target;
 539    templ.last_level = 0;
 540    templ.depth0 = 1;
 541    templ.array_size = 1;
 542
 543    if (image) {
 544       if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
 545          struct pipe_resource **buf =
 546             &drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
 547          struct pipe_resource *texture = images.front->texture;
 548
 549          dri_drawable->w = texture->width0;
 550          dri_drawable->h = texture->height0;
 551
 552          pipe_resource_reference(buf, texture);
 553       }
 554
 555       if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
 556          struct pipe_resource **buf =
 557             &drawable->textures[ST_ATTACHMENT_BACK_LEFT];
 558          struct pipe_resource *texture = images.back->texture;
 559
 560          dri_drawable->w = texture->width0;
 561          dri_drawable->h = texture->height0;
 562
 563          pipe_resource_reference(buf, texture);
 564       }
 565
 566       /* Note: if there is both a back and a front buffer,
 567        * then they have the same size.
 568        */
 569       templ.width0 = dri_drawable->w;
 570       templ.height0 = dri_drawable->h;
 571    }
 572    else {
 573       memset(&whandle, 0, sizeof(whandle));
 574
 575       /* Process DRI-provided buffers and get pipe_resources. */
 576       for (i = 0; i < num_buffers; i++) {
 577          __DRIbuffer *buf = &buffers[i];
 578          enum st_attachment_type statt;
 579          enum pipe_format format;
 580
 581          switch (buf->attachment) {
 582          case __DRI_BUFFER_FRONT_LEFT:
 583             if (!screen->auto_fake_front) {
 584                continue; /* invalid attachment */
 585             }
 586             /* fallthrough */
 587          case __DRI_BUFFER_FAKE_FRONT_LEFT:
 588             statt = ST_ATTACHMENT_FRONT_LEFT;
 589             break;
 590          case __DRI_BUFFER_BACK_LEFT:
 591             statt = ST_ATTACHMENT_BACK_LEFT;
 592             break;
 593          default:
 594             continue; /* invalid attachment */
 595          }
 596
 597          dri_drawable_get_format(drawable, statt, &format, &bind);
 598          if (format == PIPE_FORMAT_NONE)
 599             continue;
 600
 601          /* dri2_drawable_get_buffers has already filled dri_drawable->w
 602           * and dri_drawable->h */
 603          templ.width0 = dri_drawable->w;
 604          templ.height0 = dri_drawable->h;
 605          templ.format = format;
 606          templ.bind = bind;
 607          whandle.handle = buf->name;
 608          whandle.stride = buf->pitch;
 609          whandle.offset = 0;
 610          if (screen->can_share_buffer)
 611             whandle.type = DRM_API_HANDLE_TYPE_SHARED;
 612          else
 613             whandle.type = DRM_API_HANDLE_TYPE_KMS;
 614          drawable->textures[statt] =
 615             screen->base.screen->resource_from_handle(screen->base.screen,
 616                   &templ, &whandle,
 617                   PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ);
 618          assert(drawable->textures[statt]);
 619       }
 620    }
 621
 622    /* Allocate private MSAA colorbuffers. */
 623    if (drawable->stvis.samples > 1) {
 624       for (i = 0; i < statts_count; i++) {
 625          enum st_attachment_type statt = statts[i];
 626
 627          if (statt == ST_ATTACHMENT_DEPTH_STENCIL)
 628             continue;
 629
 630          if (drawable->textures[statt]) {
 631             templ.format = drawable->textures[statt]->format;
 632             templ.bind = drawable->textures[statt]->bind & ~PIPE_BIND_SCANOUT;
 633             templ.nr_samples = drawable->stvis.samples;
 634
 635             /* Try to reuse the resource.
 636              * (the other resource parameters should be constant)
 637              */
 638             if (!drawable->msaa_textures[statt] ||
 639                 drawable->msaa_textures[statt]->width0 != templ.width0 ||
 640                 drawable->msaa_textures[statt]->height0 != templ.height0) {
 641                /* Allocate a new one. */
 642                pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 643
 644                drawable->msaa_textures[statt] =
 645                   screen->base.screen->resource_create(screen->base.screen,
 646                                                        &templ);
 647                assert(drawable->msaa_textures[statt]);
 648
 649                /* If there are any MSAA resources, we should initialize them
 650                 * such that they contain the same data as the single-sample
 651                 * resources we just got from the X server.
 652                 *
 653                 * The reason for this is that the state tracker (and
 654                 * therefore the app) can access the MSAA resources only.
 655                 * The single-sample resources are not exposed
 656                 * to the state tracker.
 657                 *
 658                 */
 659                dri_pipe_blit(ctx->st->pipe,
 660                              drawable->msaa_textures[statt],
 661                              drawable->textures[statt]);
 662             }
 663          }
 664          else {
 665             pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 666          }
 667       }
 668    }
 669
 670    /* Allocate a private depth-stencil buffer. */
 671    if (alloc_depthstencil) {
 672       enum st_attachment_type statt = ST_ATTACHMENT_DEPTH_STENCIL;
 673       struct pipe_resource **zsbuf;
 674       enum pipe_format format;
 675       unsigned bind;
 676
 677       dri_drawable_get_format(drawable, statt, &format, &bind);
 678
 679       if (format) {
 680          templ.format = format;
 681          templ.bind = bind;
 682
 683          if (drawable->stvis.samples > 1) {
 684             templ.nr_samples = drawable->stvis.samples;
 685             zsbuf = &drawable->msaa_textures[statt];
 686          }
 687          else {
 688             templ.nr_samples = 0;
 689             zsbuf = &drawable->textures[statt];
 690          }
 691
 692          /* Try to reuse the resource.
 693           * (the other resource parameters should be constant)
 694           */
 695          if (!*zsbuf ||
 696              (*zsbuf)->width0 != templ.width0 ||
 697              (*zsbuf)->height0 != templ.height0) {
 698             /* Allocate a new one. */
 699             pipe_resource_reference(zsbuf, NULL);
 700             *zsbuf = screen->base.screen->resource_create(screen->base.screen,
 701                                                           &templ);
 702             assert(*zsbuf);
 703          }
 704       }
 705       else {
 706          pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 707          pipe_resource_reference(&drawable->textures[statt], NULL);
 708       }
 709    }
 710
 711    /* For DRI2, we may get the same buffers again from the server.
 712     * To prevent useless imports of gem names, drawable->old* is used
 713     * to bypass the import if we get the same buffers. This doesn't apply
 714     * to DRI3/Wayland, users of image.loader, since the buffer is managed
 715     * by the client (no import), and the back buffer is going to change
 716     * at every redraw.
 717     */
 718    if (!image) {
 719       drawable->old_num = num_buffers;
 720       drawable->old_w = dri_drawable->w;
 721       drawable->old_h = dri_drawable->h;
 722       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * num_buffers);
 723    }
 724 }
 725
 726 static void
 727 dri2_flush_frontbuffer(struct dri_context *ctx,
 728                        struct dri_drawable *drawable,
 729                        enum st_attachment_type statt)
 730 {
 731    __DRIdrawable *dri_drawable = drawable->dPriv;
 732    const __DRIimageLoaderExtension *image = drawable->sPriv->image.loader;
 733    const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
 734    struct pipe_context *pipe = ctx->st->pipe;
 735
 736    if (statt != ST_ATTACHMENT_FRONT_LEFT)
 737       return;
 738
 739    if (drawable->stvis.samples > 1) {
 740       /* Resolve the front buffer. */
 741       dri_pipe_blit(ctx->st->pipe,
 742                     drawable->textures[ST_ATTACHMENT_FRONT_LEFT],
 743                     drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT]);
 744    }
 745
 746    if (drawable->textures[ST_ATTACHMENT_FRONT_LEFT]) {
 747       pipe->flush_resource(pipe, drawable->textures[ST_ATTACHMENT_FRONT_LEFT]);
 748    }
 749
 750    pipe->flush(pipe, NULL, 0);
 751
 752    if (image) {
 753       image->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 754    }
 755    else if (loader->flushFrontBuffer) {
 756       loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 757    }
 758 }
 759
 760 static void
 761 dri2_update_tex_buffer(struct dri_drawable *drawable,
 762                        struct dri_context *ctx,
 763                        struct pipe_resource *res)
 764 {
 765    /* no-op */
 766 }
 767
 768 static __DRIimage *
 769 dri2_lookup_egl_image(struct dri_screen *screen, void *handle)
 770 {
 771    const __DRIimageLookupExtension *loader = screen->sPriv->dri2.image;
 772    __DRIimage *img;
 773
 774    if (!loader->lookupEGLImage)
 775       return NULL;
 776
 777    img = loader->lookupEGLImage(screen->sPriv,
 778                                 handle, screen->sPriv->loaderPrivate);
 779
 780    return img;
 781 }
 782
 783 static __DRIimage *
 784 dri2_create_image_from_winsys(__DRIscreen *_screen,
 785                               int width, int height, int format,
 786                               int num_handles, struct winsys_handle *whandle,
 787                               void *loaderPrivate)
 788 {
 789    struct dri_screen *screen = dri_screen(_screen);
 790    struct pipe_screen *pscreen = screen->base.screen;
 791    __DRIimage *img;
 792    struct pipe_resource templ;
 793    unsigned tex_usage;
 794    enum pipe_format pf;
 795    int i;
 796
 797    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 798
 799    pf = dri2_format_to_pipe_format (format);
 800    if (pf == PIPE_FORMAT_NONE)
 801       return NULL;
 802
 803    img = CALLOC_STRUCT(__DRIimageRec);
 804    if (!img)
 805       return NULL;
 806
 807    memset(&templ, 0, sizeof(templ));
 808    templ.bind = tex_usage;
 809    templ.target = screen->target;
 810    templ.last_level = 0;
 811    templ.depth0 = 1;
 812    templ.array_size = 1;
 813
 814    for (i = num_handles - 1; i >= 0; i--) {
 815       struct pipe_resource *tex;
 816
 817       /* TODO: something a lot less ugly */
 818       switch (i) {
 819       case 0:
 820          templ.width0 = width;
 821          templ.height0 = height;
 822          templ.format = pf;
 823          break;
 824       case 1:
 825          templ.width0 = width / 2;
 826          templ.height0 = height / 2;
 827          templ.format = (num_handles == 2) ?
 828                PIPE_FORMAT_RG88_UNORM :   /* NV12, etc */
 829                PIPE_FORMAT_R8_UNORM;      /* I420, etc */
 830          break;
 831       case 2:
 832          templ.width0 = width / 2;
 833          templ.height0 = height / 2;
 834          templ.format = PIPE_FORMAT_R8_UNORM;
 835          break;
 836       default:
 837          unreachable("too many planes!");
 838       }
 839
 840       tex = pscreen->resource_from_handle(pscreen,
 841             &templ, &whandle[i], PIPE_HANDLE_USAGE_READ_WRITE);
 842       if (!tex) {
 843          pipe_resource_reference(&img->texture, NULL);
 844          FREE(img);
 845          return NULL;
 846       }
 847
 848       tex->next = img->texture;
 849       img->texture = tex;
 850    }
 851
 852    img->level = 0;
 853    img->layer = 0;
 854    img->dri_format = format;
 855    img->use = 0;
 856    img->loader_private = loaderPrivate;
 857
 858    return img;
 859 }
 860
 861 static __DRIimage *
 862 dri2_create_image_from_name(__DRIscreen *_screen,
 863                             int width, int height, int format,
 864                             int name, int pitch, void *loaderPrivate)
 865 {
 866    struct winsys_handle whandle;
 867    enum pipe_format pf;
 868
 869    memset(&whandle, 0, sizeof(whandle));
 870    whandle.type = DRM_API_HANDLE_TYPE_SHARED;
 871    whandle.handle = name;
 872
 873    pf = dri2_format_to_pipe_format (format);
 874    if (pf == PIPE_FORMAT_NONE)
 875       return NULL;
 876
 877    whandle.stride = pitch * util_format_get_blocksize(pf);
 878
 879    return dri2_create_image_from_winsys(_screen, width, height, format,
 880                                         1, &whandle, loaderPrivate);
 881 }
 882
 883 static __DRIimage *
 884 dri2_create_image_from_fd(__DRIscreen *_screen,
 885                           int width, int height, int fourcc,
 886                           int *fds, int num_fds, int *strides,
 887                           int *offsets, unsigned *error,
 888                           int *dri_components, void *loaderPrivate)
 889 {
 890    struct winsys_handle whandles[3];
 891    int format;
 892    __DRIimage *img = NULL;
 893    unsigned err = __DRI_IMAGE_ERROR_SUCCESS;
 894    int expected_num_fds, i;
 895
 896    switch (fourcc) {
 897    case __DRI_IMAGE_FOURCC_YUV420:
 898    case __DRI_IMAGE_FOURCC_YVU420:
 899       expected_num_fds = 3;
 900       break;
 901    case __DRI_IMAGE_FOURCC_NV12:
 902       expected_num_fds = 2;
 903       break;
 904    default:
 905       expected_num_fds = 1;
 906       break;
 907    }
 908
 909    if (num_fds != expected_num_fds) {
 910       err = __DRI_IMAGE_ERROR_BAD_MATCH;
 911       goto exit;
 912    }
 913
 914    format = convert_fourcc(fourcc, dri_components);
 915    if (format == -1) {
 916       err = __DRI_IMAGE_ERROR_BAD_MATCH;
 917       goto exit;
 918    }
 919
 920    memset(whandles, 0, sizeof(whandles));
 921
 922    for (i = 0; i < num_fds; i++) {
 923       if (fds[i] < 0) {
 924          err = __DRI_IMAGE_ERROR_BAD_ALLOC;
 925          goto exit;
 926       }
 927
 928       whandles[i].type = DRM_API_HANDLE_TYPE_FD;
 929       whandles[i].handle = (unsigned)fds[i];
 930       whandles[i].stride = (unsigned)strides[i];
 931       whandles[i].offset = (unsigned)offsets[i];
 932    }
 933
 934    if (fourcc == __DRI_IMAGE_FOURCC_YVU420) {
 935       /* convert to YUV420 by swapping 2nd and 3rd planes: */
 936       struct winsys_handle tmp = whandles[1];
 937       whandles[1] = whandles[2];
 938       whandles[2] = tmp;
 939       fourcc = __DRI_IMAGE_FOURCC_YUV420;
 940    }
 941
 942    img = dri2_create_image_from_winsys(_screen, width, height, format,
 943                                        num_fds, whandles, loaderPrivate);
 944    if(img == NULL)
 945       err = __DRI_IMAGE_ERROR_BAD_ALLOC;
 946
 947 exit:
 948    if (error)
 949       *error = err;
 950
 951    return img;
 952 }
 953
 954 static __DRIimage *
 955 dri2_create_image_from_renderbuffer(__DRIcontext *context,
 956                                     int renderbuffer, void *loaderPrivate)
 957 {
 958    struct dri_context *ctx = dri_context(context);
 959
 960    if (!ctx->st->get_resource_for_egl_image)
 961       return NULL;
 962
 963    /* TODO */
 964    return NULL;
 965 }
 966
 967 static __DRIimage *
 968 dri2_create_image(__DRIscreen *_screen,
 969                    int width, int height, int format,
 970                    unsigned int use, void *loaderPrivate)
 971 {
 972    struct dri_screen *screen = dri_screen(_screen);
 973    __DRIimage *img;
 974    struct pipe_resource templ;
 975    unsigned tex_usage;
 976    enum pipe_format pf;
 977
 978    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 979    if (use & __DRI_IMAGE_USE_SCANOUT)
 980       tex_usage |= PIPE_BIND_SCANOUT;
 981    if (use & __DRI_IMAGE_USE_SHARE)
 982       tex_usage |= PIPE_BIND_SHARED;
 983    if (use & __DRI_IMAGE_USE_LINEAR)
 984       tex_usage |= PIPE_BIND_LINEAR;
 985    if (use & __DRI_IMAGE_USE_CURSOR) {
 986       if (width != 64 || height != 64)
 987          return NULL;
 988       tex_usage |= PIPE_BIND_CURSOR;
 989    }
 990
 991    pf = dri2_format_to_pipe_format (format);
 992    if (pf == PIPE_FORMAT_NONE)
 993       return NULL;
 994
 995    img = CALLOC_STRUCT(__DRIimageRec);
 996    if (!img)
 997       return NULL;
 998
 999    memset(&templ, 0, sizeof(templ));
1000    templ.bind = tex_usage;
1001    templ.format = pf;
1002    templ.target = PIPE_TEXTURE_2D;
1003    templ.last_level = 0;
1004    templ.width0 = width;
1005    templ.height0 = height;
1006    templ.depth0 = 1;
1007    templ.array_size = 1;
1008
1009    img->texture = screen->base.screen->resource_create(screen->base.screen, &templ);
1010    if (!img->texture) {
1011       FREE(img);
1012       return NULL;
1013    }
1014
1015    img->level = 0;
1016    img->layer = 0;
1017    img->dri_format = format;
1018    img->dri_components = 0;
1019    img->use = use;
1020
1021    img->loader_private = loaderPrivate;
1022    return img;
1023 }
1024
1025 static GLboolean
1026 dri2_query_image(__DRIimage *image, int attrib, int *value)
1027 {
1028    struct winsys_handle whandle;
1029    unsigned usage;
1030
1031    if (image->use & __DRI_IMAGE_USE_BACKBUFFER)
1032       usage = PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ;
1033    else
1034       usage = PIPE_HANDLE_USAGE_READ_WRITE;
1035
1036    memset(&whandle, 0, sizeof(whandle));
1037
1038    switch (attrib) {
1039    case __DRI_IMAGE_ATTRIB_STRIDE:
1040       whandle.type = DRM_API_HANDLE_TYPE_KMS;
1041       image->texture->screen->resource_get_handle(image->texture->screen,
1042             NULL, image->texture, &whandle, usage);
1043       *value = whandle.stride;
1044       return GL_TRUE;
1045    case __DRI_IMAGE_ATTRIB_HANDLE:
1046       whandle.type = DRM_API_HANDLE_TYPE_KMS;
1047       image->texture->screen->resource_get_handle(image->texture->screen,
1048          NULL, image->texture, &whandle, usage);
1049       *value = whandle.handle;
1050       return GL_TRUE;
1051    case __DRI_IMAGE_ATTRIB_NAME:
1052       whandle.type = DRM_API_HANDLE_TYPE_SHARED;
1053       image->texture->screen->resource_get_handle(image->texture->screen,
1054          NULL, image->texture, &whandle, usage);
1055       *value = whandle.handle;
1056       return GL_TRUE;
1057    case __DRI_IMAGE_ATTRIB_FD:
1058       whandle.type= DRM_API_HANDLE_TYPE_FD;
1059       if (!image->texture->screen->resource_get_handle(image->texture->screen,
1060             NULL, image->texture, &whandle, usage))
1061          return GL_FALSE;
1062
1063       *value = whandle.handle;
1064       return GL_TRUE;
1065    case __DRI_IMAGE_ATTRIB_FORMAT:
1066       *value = image->dri_format;
1067       return GL_TRUE;
1068    case __DRI_IMAGE_ATTRIB_WIDTH:
1069       *value = image->texture->width0;
1070       return GL_TRUE;
1071    case __DRI_IMAGE_ATTRIB_HEIGHT:
1072       *value = image->texture->height0;
1073       return GL_TRUE;
1074    case __DRI_IMAGE_ATTRIB_COMPONENTS:
1075       if (image->dri_components == 0)
1076          return GL_FALSE;
1077       *value = image->dri_components;
1078       return GL_TRUE;
1079    case __DRI_IMAGE_ATTRIB_FOURCC:
1080       *value = convert_to_fourcc(image->dri_format);
1081       return GL_TRUE;
1082    case __DRI_IMAGE_ATTRIB_NUM_PLANES:
1083       *value = 1;
1084       return GL_TRUE;
1085    default:
1086       return GL_FALSE;
1087    }
1088 }
1089
1090 static __DRIimage *
1091 dri2_dup_image(__DRIimage *image, void *loaderPrivate)
1092 {
1093    __DRIimage *img;
1094
1095    img = CALLOC_STRUCT(__DRIimageRec);
1096    if (!img)
1097       return NULL;
1098
1099    img->texture = NULL;
1100    pipe_resource_reference(&img->texture, image->texture);
1101    img->level = image->level;
1102    img->layer = image->layer;
1103    img->dri_format = image->dri_format;
1104    /* This should be 0 for sub images, but dup is also used for base images. */
1105    img->dri_components = image->dri_components;
1106    img->loader_private = loaderPrivate;
1107
1108    return img;
1109 }
1110
1111 static GLboolean
1112 dri2_validate_usage(__DRIimage *image, unsigned int use)
1113 {
1114    /*
1115     * Gallium drivers are bad at adding usages to the resources
1116     * once opened again in another process, which is the main use
1117     * case for this, so we have to lie.
1118     */
1119    if (image != NULL)
1120       return GL_TRUE;
1121    else
1122       return GL_FALSE;
1123 }
1124
1125 static __DRIimage *
1126 dri2_from_names(__DRIscreen *screen, int width, int height, int format,
1127                 int *names, int num_names, int *strides, int *offsets,
1128                 void *loaderPrivate)
1129 {
1130    __DRIimage *img;
1131    int dri_components;
1132    struct winsys_handle whandle;
1133
1134    if (num_names != 1)
1135       return NULL;
1136
1137    format = convert_fourcc(format, &dri_components);
1138    if (format == -1)
1139       return NULL;
1140
1141    memset(&whandle, 0, sizeof(whandle));
1142    whandle.type = DRM_API_HANDLE_TYPE_SHARED;
1143    whandle.handle = names[0];
1144    whandle.stride = strides[0];
1145    whandle.offset = offsets[0];
1146
1147    img = dri2_create_image_from_winsys(screen, width, height, format,
1148                                        1, &whandle, loaderPrivate);
1149    if (img == NULL)
1150       return NULL;
1151
1152    img->dri_components = dri_components;
1153    return img;
1154 }
1155
1156 static __DRIimage *
1157 dri2_from_planar(__DRIimage *image, int plane, void *loaderPrivate)
1158 {
1159    __DRIimage *img;
1160
1161    if (plane != 0)
1162       return NULL;
1163
1164    if (image->dri_components == 0)
1165       return NULL;
1166
1167    img = dri2_dup_image(image, loaderPrivate);
1168    if (img == NULL)
1169       return NULL;
1170
1171    /* set this to 0 for sub images. */
1172    img->dri_components = 0;
1173    return img;
1174 }
1175
1176 static __DRIimage *
1177 dri2_create_from_texture(__DRIcontext *context, int target, unsigned texture,
1178                          int depth, int level, unsigned *error,
1179                          void *loaderPrivate)
1180 {
1181    __DRIimage *img;
1182    struct gl_context *ctx = ((struct st_context *)dri_context(context)->st)->ctx;
1183    struct gl_texture_object *obj;
1184    struct pipe_resource *tex;
1185    GLuint face = 0;
1186
1187    obj = _mesa_lookup_texture(ctx, texture);
1188    if (!obj || obj->Target != target) {
1189       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
1190       return NULL;
1191    }
1192
1193    tex = st_get_texobj_resource(obj);
1194    if (!tex) {
1195       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
1196       return NULL;
1197    }
1198
1199    if (target == GL_TEXTURE_CUBE_MAP)
1200       face = depth;
1201
1202    _mesa_test_texobj_completeness(ctx, obj);
1203    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
1204       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
1205       return NULL;
1206    }
1207
1208    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
1209       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
1210       return NULL;
1211    }
1212
1213    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < depth) {
1214       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
1215       return NULL;
1216    }
1217
1218    img = CALLOC_STRUCT(__DRIimageRec);
1219    if (!img) {
1220       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
1221       return NULL;
1222    }
1223
1224    img->level = level;
1225    img->layer = depth;
1226    img->dri_format = driGLFormatToImageFormat(obj->Image[face][level]->TexFormat);
1227
1228    img->loader_private = loaderPrivate;
1229
1230    if (img->dri_format == __DRI_IMAGE_FORMAT_NONE) {
1231       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
1232       free(img);
1233       return NULL;
1234    }
1235
1236    pipe_resource_reference(&img->texture, tex);
1237
1238    *error = __DRI_IMAGE_ERROR_SUCCESS;
1239    return img;
1240 }
1241
1242 static __DRIimage *
1243 dri2_from_fds(__DRIscreen *screen, int width, int height, int fourcc,
1244               int *fds, int num_fds, int *strides, int *offsets,
1245               void *loaderPrivate)
1246 {
1247    __DRIimage *img;
1248    int dri_components;
1249
1250    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1251                                    fds, num_fds, strides, offsets, NULL,
1252                                    &dri_components, loaderPrivate);
1253    if (img == NULL)
1254       return NULL;
1255
1256    img->dri_components = dri_components;
1257    return img;
1258 }
1259
1260 static __DRIimage *
1261 dri2_from_dma_bufs(__DRIscreen *screen,
1262                    int width, int height, int fourcc,
1263                    int *fds, int num_fds,
1264                    int *strides, int *offsets,
1265                    enum __DRIYUVColorSpace yuv_color_space,
1266                    enum __DRISampleRange sample_range,
1267                    enum __DRIChromaSiting horizontal_siting,
1268                    enum __DRIChromaSiting vertical_siting,
1269                    unsigned *error,
1270                    void *loaderPrivate)
1271 {
1272    __DRIimage *img;
1273    int dri_components;
1274
1275    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1276                                    fds, num_fds, strides, offsets, error,
1277                                    &dri_components, loaderPrivate);
1278    if (img == NULL)
1279       return NULL;
1280
1281    img->yuv_color_space = yuv_color_space;
1282    img->sample_range = sample_range;
1283    img->horizontal_siting = horizontal_siting;
1284    img->vertical_siting = vertical_siting;
1285    img->dri_components = dri_components;
1286
1287    *error = __DRI_IMAGE_ERROR_SUCCESS;
1288    return img;
1289 }
1290
1291 static void
1292 dri2_blit_image(__DRIcontext *context, __DRIimage *dst, __DRIimage *src,
1293                 int dstx0, int dsty0, int dstwidth, int dstheight,
1294                 int srcx0, int srcy0, int srcwidth, int srcheight,
1295                 int flush_flag)
1296 {
1297    struct dri_context *ctx = dri_context(context);
1298    struct pipe_context *pipe = ctx->st->pipe;
1299    struct pipe_screen *screen;
1300    struct pipe_fence_handle *fence;
1301    struct pipe_blit_info blit;
1302
1303    if (!dst || !src)
1304       return;
1305
1306    memset(&blit, 0, sizeof(blit));
1307    blit.dst.resource = dst->texture;
1308    blit.dst.box.x = dstx0;
1309    blit.dst.box.y = dsty0;
1310    blit.dst.box.width = dstwidth;
1311    blit.dst.box.height = dstheight;
1312    blit.dst.box.depth = 1;
1313    blit.dst.format = dst->texture->format;
1314    blit.src.resource = src->texture;
1315    blit.src.box.x = srcx0;
1316    blit.src.box.y = srcy0;
1317    blit.src.box.width = srcwidth;
1318    blit.src.box.height = srcheight;
1319    blit.src.box.depth = 1;
1320    blit.src.format = src->texture->format;
1321    blit.mask = PIPE_MASK_RGBA;
1322    blit.filter = PIPE_TEX_FILTER_NEAREST;
1323
1324    pipe->blit(pipe, &blit);
1325
1326    if (flush_flag == __BLIT_FLAG_FLUSH) {
1327       pipe->flush_resource(pipe, dst->texture);
1328       ctx->st->flush(ctx->st, 0, NULL);
1329    } else if (flush_flag == __BLIT_FLAG_FINISH) {
1330       screen = dri_screen(ctx->sPriv)->base.screen;
1331       pipe->flush_resource(pipe, dst->texture);
1332       ctx->st->flush(ctx->st, 0, &fence);
1333       (void) screen->fence_finish(screen, NULL, fence, PIPE_TIMEOUT_INFINITE);
1334       screen->fence_reference(screen, &fence, NULL);
1335    }
1336 }
1337
1338 static void *
1339 dri2_map_image(__DRIcontext *context, __DRIimage *image,
1340                 int x0, int y0, int width, int height,
1341                 unsigned int flags, int *stride, void **data)
1342 {
1343    struct dri_context *ctx = dri_context(context);
1344    struct pipe_context *pipe = ctx->st->pipe;
1345    enum pipe_transfer_usage pipe_access = 0;
1346    struct pipe_transfer *trans;
1347    void *map;
1348
1349    if (!image || !data || *data)
1350       return NULL;
1351
1352    if (flags & __DRI_IMAGE_TRANSFER_READ)
1353          pipe_access |= PIPE_TRANSFER_READ;
1354    if (flags & __DRI_IMAGE_TRANSFER_WRITE)
1355          pipe_access |= PIPE_TRANSFER_WRITE;
1356
1357    map = pipe_transfer_map(pipe, image->texture,
1358                            0, 0, pipe_access, x0, y0, width, height,
1359                            &trans);
1360    if (map) {
1361       *data = trans;
1362       *stride = trans->stride;
1363    }
1364
1365    return map;
1366 }
1367
1368 static void
1369 dri2_unmap_image(__DRIcontext *context, __DRIimage *image, void *data)
1370 {
1371    struct dri_context *ctx = dri_context(context);
1372    struct pipe_context *pipe = ctx->st->pipe;
1373
1374    pipe_transfer_unmap(pipe, (struct pipe_transfer *)data);
1375 }
1376
1377 static void
1378 dri2_destroy_image(__DRIimage *img)
1379 {
1380    pipe_resource_reference(&img->texture, NULL);
1381    FREE(img);
1382 }
1383
1384 static int
1385 dri2_get_capabilities(__DRIscreen *_screen)
1386 {
1387    struct dri_screen *screen = dri_screen(_screen);
1388
1389    return (screen->can_share_buffer ? __DRI_IMAGE_CAP_GLOBAL_NAMES : 0);
1390 }
1391
1392 /* The extension is modified during runtime if DRI_PRIME is detected */
1393 static __DRIimageExtension dri2ImageExtension = {
1394     .base = { __DRI_IMAGE, 12 },
1395
1396     .createImageFromName          = dri2_create_image_from_name,
1397     .createImageFromRenderbuffer  = dri2_create_image_from_renderbuffer,
1398     .destroyImage                 = dri2_destroy_image,
1399     .createImage                  = dri2_create_image,
1400     .queryImage                   = dri2_query_image,
1401     .dupImage                     = dri2_dup_image,
1402     .validateUsage                = dri2_validate_usage,
1403     .createImageFromNames         = dri2_from_names,
1404     .fromPlanar                   = dri2_from_planar,
1405     .createImageFromTexture       = dri2_create_from_texture,
1406     .createImageFromFds           = NULL,
1407     .createImageFromDmaBufs       = NULL,
1408     .blitImage                    = dri2_blit_image,
1409     .getCapabilities              = dri2_get_capabilities,
1410     .mapImage                     = dri2_map_image,
1411     .unmapImage                   = dri2_unmap_image,
1412 };
1413
1414
1415 static bool
1416 dri2_is_opencl_interop_loaded_locked(struct dri_screen *screen)
1417 {
1418    return screen->opencl_dri_event_add_ref &&
1419           screen->opencl_dri_event_release &&
1420           screen->opencl_dri_event_wait &&
1421           screen->opencl_dri_event_get_fence;
1422 }
1423
1424 static bool
1425 dri2_load_opencl_interop(struct dri_screen *screen)
1426 {
1427 #if defined(RTLD_DEFAULT)
1428    bool success;
1429
1430    pipe_mutex_lock(screen->opencl_func_mutex);
1431
1432    if (dri2_is_opencl_interop_loaded_locked(screen)) {
1433       pipe_mutex_unlock(screen->opencl_func_mutex);
1434       return true;
1435    }
1436
1437    screen->opencl_dri_event_add_ref =
1438       dlsym(RTLD_DEFAULT, "opencl_dri_event_add_ref");
1439    screen->opencl_dri_event_release =
1440       dlsym(RTLD_DEFAULT, "opencl_dri_event_release");
1441    screen->opencl_dri_event_wait =
1442       dlsym(RTLD_DEFAULT, "opencl_dri_event_wait");
1443    screen->opencl_dri_event_get_fence =
1444       dlsym(RTLD_DEFAULT, "opencl_dri_event_get_fence");
1445
1446    success = dri2_is_opencl_interop_loaded_locked(screen);
1447    pipe_mutex_unlock(screen->opencl_func_mutex);
1448    return success;
1449 #else
1450    return false;
1451 #endif
1452 }
1453
1454 struct dri2_fence {
1455    struct dri_screen *driscreen;
1456    struct pipe_fence_handle *pipe_fence;
1457    void *cl_event;
1458 };
1459
1460 static void *
1461 dri2_create_fence(__DRIcontext *_ctx)
1462 {
1463    struct pipe_context *ctx = dri_context(_ctx)->st->pipe;
1464    struct dri2_fence *fence = CALLOC_STRUCT(dri2_fence);
1465
1466    if (!fence)
1467       return NULL;
1468
1469    ctx->flush(ctx, &fence->pipe_fence, 0);
1470
1471    if (!fence->pipe_fence) {
1472       FREE(fence);
1473       return NULL;
1474    }
1475
1476    fence->driscreen = dri_screen(_ctx->driScreenPriv);
1477    return fence;
1478 }
1479
1480 static void *
1481 dri2_get_fence_from_cl_event(__DRIscreen *_screen, intptr_t cl_event)
1482 {
1483    struct dri_screen *driscreen = dri_screen(_screen);
1484    struct dri2_fence *fence;
1485
1486    if (!dri2_load_opencl_interop(driscreen))
1487       return NULL;
1488
1489    fence = CALLOC_STRUCT(dri2_fence);
1490    if (!fence)
1491       return NULL;
1492
1493    fence->cl_event = (void*)cl_event;
1494
1495    if (!driscreen->opencl_dri_event_add_ref(fence->cl_event)) {
1496       free(fence);
1497       return NULL;
1498    }
1499
1500    fence->driscreen = driscreen;
1501    return fence;
1502 }
1503
1504 static void
1505 dri2_destroy_fence(__DRIscreen *_screen, void *_fence)
1506 {
1507    struct dri_screen *driscreen = dri_screen(_screen);
1508    struct pipe_screen *screen = driscreen->base.screen;
1509    struct dri2_fence *fence = (struct dri2_fence*)_fence;
1510
1511    if (fence->pipe_fence)
1512       screen->fence_reference(screen, &fence->pipe_fence, NULL);
1513    else if (fence->cl_event)
1514       driscreen->opencl_dri_event_release(fence->cl_event);
1515    else
1516       assert(0);
1517
1518    FREE(fence);
1519 }
1520
1521 static GLboolean
1522 dri2_client_wait_sync(__DRIcontext *_ctx, void *_fence, unsigned flags,
1523                       uint64_t timeout)
1524 {
1525    struct dri2_fence *fence = (struct dri2_fence*)_fence;
1526    struct dri_screen *driscreen = fence->driscreen;
1527    struct pipe_screen *screen = driscreen->base.screen;
1528
1529    /* No need to flush. The context was flushed when the fence was created. */
1530
1531    if (fence->pipe_fence)
1532       return screen->fence_finish(screen, NULL, fence->pipe_fence, timeout);
1533    else if (fence->cl_event) {
1534       struct pipe_fence_handle *pipe_fence =
1535          driscreen->opencl_dri_event_get_fence(fence->cl_event);
1536
1537       if (pipe_fence)
1538          return screen->fence_finish(screen, NULL, pipe_fence, timeout);
1539       else
1540          return driscreen->opencl_dri_event_wait(fence->cl_event, timeout);
1541    }
1542    else {
1543       assert(0);
1544       return false;
1545    }
1546 }
1547
1548 static void
1549 dri2_server_wait_sync(__DRIcontext *_ctx, void *_fence, unsigned flags)
1550 {
1551    /* AFAIK, no driver currently supports parallel context execution. */
1552 }
1553
1554 static __DRI2fenceExtension dri2FenceExtension = {
1555    .base = { __DRI2_FENCE, 1 },
1556
1557    .create_fence = dri2_create_fence,
1558    .get_fence_from_cl_event = dri2_get_fence_from_cl_event,
1559    .destroy_fence = dri2_destroy_fence,
1560    .client_wait_sync = dri2_client_wait_sync,
1561    .server_wait_sync = dri2_server_wait_sync
1562 };
1563
1564 static const __DRIrobustnessExtension dri2Robustness = {
1565    .base = { __DRI2_ROBUSTNESS, 1 }
1566 };
1567
1568 static int
1569 dri2_interop_query_device_info(__DRIcontext *_ctx,
1570                                struct mesa_glinterop_device_info *out)
1571 {
1572    struct pipe_screen *screen = dri_context(_ctx)->st->pipe->screen;
1573
1574    /* There is no version 0, thus we do not support it */
1575    if (out->version == 0)
1576       return MESA_GLINTEROP_INVALID_VERSION;
1577
1578    out->pci_segment_group = screen->get_param(screen, PIPE_CAP_PCI_GROUP);
1579    out->pci_bus = screen->get_param(screen, PIPE_CAP_PCI_BUS);
1580    out->pci_device = screen->get_param(screen, PIPE_CAP_PCI_DEVICE);
1581    out->pci_function = screen->get_param(screen, PIPE_CAP_PCI_FUNCTION);
1582
1583    out->vendor_id = screen->get_param(screen, PIPE_CAP_VENDOR_ID);
1584    out->device_id = screen->get_param(screen, PIPE_CAP_DEVICE_ID);
1585
1586    /* Instruct the caller that we support up-to version one of the interface */
1587    out->version = 1;
1588
1589    return MESA_GLINTEROP_SUCCESS;
1590 }
1591
1592 static int
1593 dri2_interop_export_object(__DRIcontext *_ctx,
1594                            struct mesa_glinterop_export_in *in,
1595                            struct mesa_glinterop_export_out *out)
1596 {
1597    struct st_context_iface *st = dri_context(_ctx)->st;
1598    struct pipe_screen *screen = st->pipe->screen;
1599    struct gl_context *ctx = ((struct st_context *)st)->ctx;
1600    struct pipe_resource *res = NULL;
1601    struct winsys_handle whandle;
1602    unsigned target, usage;
1603    boolean success;
1604
1605    /* There is no version 0, thus we do not support it */
1606    if (in->version == 0 || out->version == 0)
1607       return MESA_GLINTEROP_INVALID_VERSION;
1608
1609    /* Validate the target. */
1610    switch (in->target) {
1611    case GL_TEXTURE_BUFFER:
1612    case GL_TEXTURE_1D:
1613    case GL_TEXTURE_2D:
1614    case GL_TEXTURE_3D:
1615    case GL_TEXTURE_RECTANGLE:
1616    case GL_TEXTURE_1D_ARRAY:
1617    case GL_TEXTURE_2D_ARRAY:
1618    case GL_TEXTURE_CUBE_MAP_ARRAY:
1619    case GL_TEXTURE_CUBE_MAP:
1620    case GL_TEXTURE_2D_MULTISAMPLE:
1621    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1622    case GL_TEXTURE_EXTERNAL_OES:
1623    case GL_RENDERBUFFER:
1624    case GL_ARRAY_BUFFER:
1625       target = in->target;
1626       break;
1627    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1628    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1629    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1630    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1631    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1632    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1633       target = GL_TEXTURE_CUBE_MAP;
1634       break;
1635    default:
1636       return MESA_GLINTEROP_INVALID_TARGET;
1637    }
1638
1639    /* Validate the simple case of miplevel. */
1640    if ((target == GL_RENDERBUFFER || target == GL_ARRAY_BUFFER) &&
1641        in->miplevel != 0)
1642       return MESA_GLINTEROP_INVALID_MIP_LEVEL;
1643
1644    /* Validate the OpenGL object and get pipe_resource. */
1645    mtx_lock(&ctx->Shared->Mutex);
1646
1647    if (target == GL_ARRAY_BUFFER) {
1648       /* Buffer objects.
1649        *
1650        * The error checking is based on the documentation of
1651        * clCreateFromGLBuffer from OpenCL 2.0 SDK.
1652        */
1653       struct gl_buffer_object *buf = _mesa_lookup_bufferobj(ctx, in->obj);
1654
1655       /* From OpenCL 2.0 SDK, clCreateFromGLBuffer:
1656        *  "CL_INVALID_GL_OBJECT if bufobj is not a GL buffer object or is
1657        *   a GL buffer object but does not have an existing data store or
1658        *   the size of the buffer is 0."
1659        */
1660       if (!buf || buf->Size == 0) {
1661          mtx_unlock(&ctx->Shared->Mutex);
1662          return MESA_GLINTEROP_INVALID_OBJECT;
1663       }
1664
1665       res = st_buffer_object(buf)->buffer;
1666       if (!res) {
1667          /* this shouldn't happen */
1668          mtx_unlock(&ctx->Shared->Mutex);
1669          return MESA_GLINTEROP_INVALID_OBJECT;
1670       }
1671
1672       out->buf_offset = 0;
1673       out->buf_size = buf->Size;
1674
1675       buf->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
1676    } else if (target == GL_RENDERBUFFER) {
1677       /* Renderbuffers.
1678        *
1679        * The error checking is based on the documentation of
1680        * clCreateFromGLRenderbuffer from OpenCL 2.0 SDK.
1681        */
1682       struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, in->obj);
1683
1684       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1685        *   "CL_INVALID_GL_OBJECT if renderbuffer is not a GL renderbuffer
1686        *    object or if the width or height of renderbuffer is zero."
1687        */
1688       if (!rb || rb->Width == 0 || rb->Height == 0) {
1689          mtx_unlock(&ctx->Shared->Mutex);
1690          return MESA_GLINTEROP_INVALID_OBJECT;
1691       }
1692
1693       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1694        *   "CL_INVALID_OPERATION if renderbuffer is a multi-sample GL
1695        *    renderbuffer object."
1696        */
1697       if (rb->NumSamples > 1) {
1698          mtx_unlock(&ctx->Shared->Mutex);
1699          return MESA_GLINTEROP_INVALID_OPERATION;
1700       }
1701
1702       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1703        *   "CL_OUT_OF_RESOURCES if there is a failure to allocate resources
1704        *    required by the OpenCL implementation on the device."
1705        */
1706       res = st_renderbuffer(rb)->texture;
1707       if (!res) {
1708          mtx_unlock(&ctx->Shared->Mutex);
1709          return MESA_GLINTEROP_OUT_OF_RESOURCES;
1710       }
1711
1712       out->internal_format = rb->InternalFormat;
1713       out->view_minlevel = 0;
1714       out->view_numlevels = 1;
1715       out->view_minlayer = 0;
1716       out->view_numlayers = 1;
1717    } else {
1718       /* Texture objects.
1719        *
1720        * The error checking is based on the documentation of
1721        * clCreateFromGLTexture from OpenCL 2.0 SDK.
1722        */
1723       struct gl_texture_object *obj = _mesa_lookup_texture(ctx, in->obj);
1724
1725       if (obj)
1726          _mesa_test_texobj_completeness(ctx, obj);
1727
1728       /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
1729        *   "CL_INVALID_GL_OBJECT if texture is not a GL texture object whose
1730        *    type matches texture_target, if the specified miplevel of texture
1731        *    is not defined, or if the width or height of the specified
1732        *    miplevel is zero or if the GL texture object is incomplete."
1733        */
1734       if (!obj ||
1735           obj->Target != target ||
1736           !obj->_BaseComplete ||
1737           (in->miplevel > 0 && !obj->_MipmapComplete)) {
1738          mtx_unlock(&ctx->Shared->Mutex);
1739          return MESA_GLINTEROP_INVALID_OBJECT;
1740       }
1741
1742       /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
1743        *   "CL_INVALID_MIP_LEVEL if miplevel is less than the value of
1744        *    levelbase (for OpenGL implementations) or zero (for OpenGL ES
1745        *    implementations); or greater than the value of q (for both OpenGL
1746        *    and OpenGL ES). levelbase and q are defined for the texture in
1747        *    section 3.8.10 (Texture Completeness) of the OpenGL 2.1
1748        *    specification and section 3.7.10 of the OpenGL ES 2.0."
1749        */
1750       if (in->miplevel < obj->BaseLevel || in->miplevel > obj->_MaxLevel) {
1751          mtx_unlock(&ctx->Shared->Mutex);
1752          return MESA_GLINTEROP_INVALID_MIP_LEVEL;
1753       }
1754
1755       if (!st_finalize_texture(ctx, st->pipe, obj)) {
1756          mtx_unlock(&ctx->Shared->Mutex);
1757          return MESA_GLINTEROP_OUT_OF_RESOURCES;
1758       }
1759
1760       res = st_get_texobj_resource(obj);
1761       if (!res) {
1762          /* Incomplete texture buffer object? This shouldn't really occur. */
1763          mtx_unlock(&ctx->Shared->Mutex);
1764          return MESA_GLINTEROP_INVALID_OBJECT;
1765       }
1766
1767       if (target == GL_TEXTURE_BUFFER) {
1768          out->internal_format = obj->BufferObjectFormat;
1769          out->buf_offset = obj->BufferOffset;
1770          out->buf_size = obj->BufferSize == -1 ? obj->BufferObject->Size :
1771                                                  obj->BufferSize;
1772
1773          obj->BufferObject->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
1774       } else {
1775          out->internal_format = obj->Image[0][0]->InternalFormat;
1776          out->view_minlevel = obj->MinLevel;
1777          out->view_numlevels = obj->NumLevels;
1778          out->view_minlayer = obj->MinLayer;
1779          out->view_numlayers = obj->NumLayers;
1780       }
1781    }
1782
1783    /* Get the handle. */
1784    switch (in->access) {
1785    case MESA_GLINTEROP_ACCESS_READ_WRITE:
1786       usage = PIPE_HANDLE_USAGE_READ_WRITE;
1787       break;
1788    case MESA_GLINTEROP_ACCESS_READ_ONLY:
1789       usage = PIPE_HANDLE_USAGE_READ;
1790       break;
1791    case MESA_GLINTEROP_ACCESS_WRITE_ONLY:
1792       usage = PIPE_HANDLE_USAGE_WRITE;
1793       break;
1794    default:
1795       usage = 0;
1796    }
1797
1798    memset(&whandle, 0, sizeof(whandle));
1799    whandle.type = DRM_API_HANDLE_TYPE_FD;
1800
1801    success = screen->resource_get_handle(screen, st->pipe, res, &whandle,
1802                                          usage);
1803    mtx_unlock(&ctx->Shared->Mutex);
1804
1805    if (!success)
1806       return MESA_GLINTEROP_OUT_OF_HOST_MEMORY;
1807
1808    out->dmabuf_fd = whandle.handle;
1809    out->out_driver_data_written = 0;
1810
1811    if (res->target == PIPE_BUFFER)
1812       out->buf_offset += whandle.offset;
1813
1814    /* Instruct the caller that we support up-to version one of the interface */
1815    in->version = 1;
1816    out->version = 1;
1817
1818    return MESA_GLINTEROP_SUCCESS;
1819 }
1820
1821 static const __DRI2interopExtension dri2InteropExtension = {
1822    .base = { __DRI2_INTEROP, 1 },
1823    .query_device_info = dri2_interop_query_device_info,
1824    .export_object = dri2_interop_export_object
1825 };
1826
1827 /*
1828  * Backend function init_screen.
1829  */
1830
1831 static const __DRIextension *dri_screen_extensions[] = {
1832    &driTexBufferExtension.base,
1833    &dri2FlushExtension.base,
1834    &dri2ImageExtension.base,
1835    &dri2RendererQueryExtension.base,
1836    &dri2ConfigQueryExtension.base,
1837    &dri2ThrottleExtension.base,
1838    &dri2FenceExtension.base,
1839    &dri2InteropExtension.base,
1840    NULL
1841 };
1842
1843 static const __DRIextension *dri_robust_screen_extensions[] = {
1844    &driTexBufferExtension.base,
1845    &dri2FlushExtension.base,
1846    &dri2ImageExtension.base,
1847    &dri2RendererQueryExtension.base,
1848    &dri2ConfigQueryExtension.base,
1849    &dri2ThrottleExtension.base,
1850    &dri2FenceExtension.base,
1851    &dri2InteropExtension.base,
1852    &dri2Robustness.base,
1853    NULL
1854 };
1855
1856 /**
1857  * This is the driver specific part of the createNewScreen entry point.
1858  *
1859  * Returns the struct gl_config supported by this driver.
1860  */
1861 static const __DRIconfig **
1862 dri2_init_screen(__DRIscreen * sPriv)
1863 {
1864    const __DRIconfig **configs;
1865    struct dri_screen *screen;
1866    struct pipe_screen *pscreen = NULL;
1867    const struct drm_conf_ret *throttle_ret;
1868    const struct drm_conf_ret *dmabuf_ret;
1869    int fd;
1870
1871    screen = CALLOC_STRUCT(dri_screen);
1872    if (!screen)
1873       return NULL;
1874
1875    screen->sPriv = sPriv;
1876    screen->fd = sPriv->fd;
1877    pipe_mutex_init(screen->opencl_func_mutex);
1878
1879    sPriv->driverPrivate = (void *)screen;
1880
1881    if (screen->fd < 0 || (fd = fcntl(screen->fd, F_DUPFD_CLOEXEC, 3)) < 0)
1882       goto free_screen;
1883
1884    if (pipe_loader_drm_probe_fd(&screen->dev, fd))
1885       pscreen = pipe_loader_create_screen(screen->dev);
1886
1887    if (!pscreen)
1888        goto release_pipe;
1889
1890    throttle_ret = pipe_loader_configuration(screen->dev, DRM_CONF_THROTTLE);
1891    dmabuf_ret = pipe_loader_configuration(screen->dev, DRM_CONF_SHARE_FD);
1892
1893    if (throttle_ret && throttle_ret->val.val_int != -1) {
1894       screen->throttling_enabled = TRUE;
1895       screen->default_throttle_frames = throttle_ret->val.val_int;
1896    }
1897
1898    if (dmabuf_ret && dmabuf_ret->val.val_bool) {
1899       uint64_t cap;
1900
1901       if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&
1902           (cap & DRM_PRIME_CAP_IMPORT)) {
1903          dri2ImageExtension.createImageFromFds = dri2_from_fds;
1904          dri2ImageExtension.createImageFromDmaBufs = dri2_from_dma_bufs;
1905       }
1906    }
1907
1908    if (pscreen->get_param(pscreen, PIPE_CAP_DEVICE_RESET_STATUS_QUERY)) {
1909       sPriv->extensions = dri_robust_screen_extensions;
1910       screen->has_reset_status_query = true;
1911    }
1912    else
1913       sPriv->extensions = dri_screen_extensions;
1914
1915    configs = dri_init_screen_helper(screen, pscreen, screen->dev->driver_name);
1916    if (!configs)
1917       goto destroy_screen;
1918
1919    screen->can_share_buffer = true;
1920    screen->auto_fake_front = dri_with_format(sPriv);
1921    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
1922    screen->lookup_egl_image = dri2_lookup_egl_image;
1923
1924    return configs;
1925
1926 destroy_screen:
1927    dri_destroy_screen_helper(screen);
1928
1929 release_pipe:
1930    if (screen->dev)
1931       pipe_loader_release(&screen->dev, 1);
1932    else
1933       close(fd);
1934
1935 free_screen:
1936    FREE(screen);
1937    return NULL;
1938 }
1939
1940 /**
1941  * This is the driver specific part of the createNewScreen entry point.
1942  *
1943  * Returns the struct gl_config supported by this driver.
1944  */
1945 static const __DRIconfig **
1946 dri_kms_init_screen(__DRIscreen * sPriv)
1947 {
1948 #if defined(GALLIUM_SOFTPIPE)
1949    const __DRIconfig **configs;
1950    struct dri_screen *screen;
1951    struct pipe_screen *pscreen = NULL;
1952    uint64_t cap;
1953    int fd;
1954
1955    screen = CALLOC_STRUCT(dri_screen);
1956    if (!screen)
1957       return NULL;
1958
1959    screen->sPriv = sPriv;
1960    screen->fd = sPriv->fd;
1961
1962    sPriv->driverPrivate = (void *)screen;
1963
1964    if (screen->fd < 0 || (fd = fcntl(screen->fd, F_DUPFD_CLOEXEC, 3)) < 0)
1965       goto free_screen;
1966
1967    if (pipe_loader_sw_probe_kms(&screen->dev, fd))
1968       pscreen = pipe_loader_create_screen(screen->dev);
1969
1970    if (!pscreen)
1971        goto release_pipe;
1972
1973    if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&
1974           (cap & DRM_PRIME_CAP_IMPORT)) {
1975       dri2ImageExtension.createImageFromFds = dri2_from_fds;
1976       dri2ImageExtension.createImageFromDmaBufs = dri2_from_dma_bufs;
1977    }
1978
1979    sPriv->extensions = dri_screen_extensions;
1980
1981    configs = dri_init_screen_helper(screen, pscreen, "swrast");
1982    if (!configs)
1983       goto destroy_screen;
1984
1985    screen->can_share_buffer = false;
1986    screen->auto_fake_front = dri_with_format(sPriv);
1987    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
1988    screen->lookup_egl_image = dri2_lookup_egl_image;
1989
1990    return configs;
1991
1992 destroy_screen:
1993    dri_destroy_screen_helper(screen);
1994
1995 release_pipe:
1996    if (screen->dev)
1997       pipe_loader_release(&screen->dev, 1);
1998    else
1999       close(fd);
2000
2001 free_screen:
2002    FREE(screen);
2003 #endif // GALLIUM_SOFTPIPE
2004    return NULL;
2005 }
2006
2007 static boolean
2008 dri2_create_buffer(__DRIscreen * sPriv,
2009                    __DRIdrawable * dPriv,
2010                    const struct gl_config * visual, boolean isPixmap)
2011 {
2012    struct dri_drawable *drawable = NULL;
2013
2014    if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
2015       return FALSE;
2016
2017    drawable = dPriv->driverPrivate;
2018
2019    drawable->allocate_textures = dri2_allocate_textures;
2020    drawable->flush_frontbuffer = dri2_flush_frontbuffer;
2021    drawable->update_tex_buffer = dri2_update_tex_buffer;
2022
2023    return TRUE;
2024 }
2025
2026 /**
2027  * DRI driver virtual function table.
2028  *
2029  * DRI versions differ in their implementation of init_screen and swap_buffers.
2030  */
2031 const struct __DriverAPIRec galliumdrm_driver_api = {
2032    .InitScreen = dri2_init_screen,
2033    .DestroyScreen = dri_destroy_screen,
2034    .CreateContext = dri_create_context,
2035    .DestroyContext = dri_destroy_context,
2036    .CreateBuffer = dri2_create_buffer,
2037    .DestroyBuffer = dri_destroy_buffer,
2038    .MakeCurrent = dri_make_current,
2039    .UnbindContext = dri_unbind_context,
2040
2041    .AllocateBuffer = dri2_allocate_buffer,
2042    .ReleaseBuffer  = dri2_release_buffer,
2043 };
2044
2045 /**
2046  * DRI driver virtual function table.
2047  *
2048  * KMS/DRM version of the DriverAPI above sporting a different InitScreen
2049  * hook. The latter is used to explicitly initialise the kms_swrast driver
2050  * rather than selecting the approapriate driver as suggested by the loader.
2051  */
2052 const struct __DriverAPIRec dri_kms_driver_api = {
2053    .InitScreen = dri_kms_init_screen,
2054    .DestroyScreen = dri_destroy_screen,
2055    .CreateContext = dri_create_context,
2056    .DestroyContext = dri_destroy_context,
2057    .CreateBuffer = dri2_create_buffer,
2058    .DestroyBuffer = dri_destroy_buffer,
2059    .MakeCurrent = dri_make_current,
2060    .UnbindContext = dri_unbind_context,
2061
2062    .AllocateBuffer = dri2_allocate_buffer,
2063    .ReleaseBuffer  = dri2_release_buffer,
2064 };
2065
2066 /* This is the table of extensions that the loader will dlsym() for. */
2067 const __DRIextension *galliumdrm_driver_extensions[] = {
2068     &driCoreExtension.base,
2069     &driImageDriverExtension.base,
2070     &driDRI2Extension.base,
2071     &gallium_config_options.base,
2072     &dri2FenceExtension.base,
2073     NULL
2074 };
2075
2076 /* vim: set sw=3 ts=8 sts=3 expandtab: */