src/gallium/drivers/lima/lima_resource.c

   1 /*
   2  * Copyright (c) 2017-2019 Lima Project
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #include "util/u_memory.h"
  26 #include "util/u_blitter.h"
  27 #include "util/u_format.h"
  28 #include "util/u_inlines.h"
  29 #include "util/u_math.h"
  30 #include "util/u_debug.h"
  31 #include "util/u_transfer.h"
  32 #include "util/u_surface.h"
  33 #include "util/hash_table.h"
  34 #include "util/u_drm.h"
  35 #include "renderonly/renderonly.h"
  36
  37 #include "state_tracker/drm_driver.h"
  38
  39 #include "drm-uapi/drm_fourcc.h"
  40 #include "drm-uapi/lima_drm.h"
  41
  42 #include "lima_screen.h"
  43 #include "lima_context.h"
  44 #include "lima_resource.h"
  45 #include "lima_bo.h"
  46 #include "lima_util.h"
  47 #include "pan_tiling.h"
  48
  49 static struct pipe_resource *
  50 lima_resource_create_scanout(struct pipe_screen *pscreen,
  51                              const struct pipe_resource *templat,
  52                              unsigned width, unsigned height)
  53 {
  54    struct lima_screen *screen = lima_screen(pscreen);
  55    struct renderonly_scanout *scanout;
  56    struct winsys_handle handle;
  57    struct pipe_resource *pres;
  58
  59    struct pipe_resource scanout_templat = *templat;
  60    scanout_templat.width0 = width;
  61    scanout_templat.height0 = height;
  62    scanout_templat.screen = pscreen;
  63
  64    scanout = renderonly_scanout_for_resource(&scanout_templat,
  65                                              screen->ro, &handle);
  66    if (!scanout)
  67       return NULL;
  68
  69    assert(handle.type == WINSYS_HANDLE_TYPE_FD);
  70    pres = pscreen->resource_from_handle(pscreen, templat, &handle,
  71                                         PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE);
  72
  73    close(handle.handle);
  74    if (!pres) {
  75       renderonly_scanout_destroy(scanout, screen->ro);
  76       return NULL;
  77    }
  78
  79    struct lima_resource *res = lima_resource(pres);
  80    res->scanout = scanout;
  81
  82    return pres;
  83 }
  84
  85 static uint32_t
  86 setup_miptree(struct lima_resource *res,
  87               unsigned width0, unsigned height0,
  88               bool should_align_dimensions)
  89 {
  90    struct pipe_resource *pres = &res->base;
  91    unsigned level;
  92    unsigned width = width0;
  93    unsigned height = height0;
  94    unsigned depth = pres->depth0;
  95    uint32_t size = 0;
  96
  97    for (level = 0; level <= pres->last_level; level++) {
  98       uint32_t actual_level_size;
  99       uint32_t stride;
 100       unsigned aligned_width;
 101       unsigned aligned_height;
 102
 103       if (should_align_dimensions) {
 104          aligned_width = align(width, 16);
 105          aligned_height = align(height, 16);
 106       } else {
 107          aligned_width = width;
 108          aligned_height = height;
 109       }
 110
 111       stride = util_format_get_stride(pres->format, aligned_width);
 112       actual_level_size = stride *
 113          util_format_get_nblocksy(pres->format, aligned_height) *
 114          pres->array_size * depth;
 115
 116       res->levels[level].width = aligned_width;
 117       res->levels[level].stride = stride;
 118       res->levels[level].offset = size;
 119
 120       /* The start address of each level <= 10 must be 64-aligned
 121        * in order to be able to pass the addresses
 122        * to the hardware.
 123        * The start addresses of level 11 and level 12 are passed
 124        * implicitely: they start at an offset of respectively
 125        * 0x0400 and 0x0800 from the start address of level 10 */
 126       if (level < 10)
 127          size += align(actual_level_size, 64);
 128       else if (level != pres->last_level)
 129          size += 0x0400;
 130       else
 131          size += actual_level_size;  /* Save some memory */
 132
 133       width = u_minify(width, 1);
 134       height = u_minify(height, 1);
 135       depth = u_minify(depth, 1);
 136    }
 137
 138    return size;
 139 }
 140
 141 static struct pipe_resource *
 142 lima_resource_create_bo(struct pipe_screen *pscreen,
 143                         const struct pipe_resource *templat,
 144                         unsigned width, unsigned height,
 145                         bool should_align_dimensions)
 146 {
 147    struct lima_screen *screen = lima_screen(pscreen);
 148    struct lima_resource *res;
 149    struct pipe_resource *pres;
 150
 151    res = CALLOC_STRUCT(lima_resource);
 152    if (!res)
 153       return NULL;
 154
 155    res->base = *templat;
 156    res->base.screen = pscreen;
 157    pipe_reference_init(&res->base.reference, 1);
 158
 159    pres = &res->base;
 160
 161    uint32_t size = setup_miptree(res, width, height, should_align_dimensions);
 162    size = align(size, LIMA_PAGE_SIZE);
 163
 164    res->bo = lima_bo_create(screen, size, 0);
 165    if (!res->bo) {
 166       FREE(res);
 167       return NULL;
 168    }
 169
 170    return pres;
 171 }
 172
 173 static struct pipe_resource *
 174 _lima_resource_create_with_modifiers(struct pipe_screen *pscreen,
 175                                      const struct pipe_resource *templat,
 176                                      const uint64_t *modifiers,
 177                                      int count)
 178 {
 179    struct lima_screen *screen = lima_screen(pscreen);
 180    bool should_tile = false;
 181    unsigned width, height;
 182    bool should_align_dimensions;
 183
 184    /* VBOs/PBOs are untiled (and 1 height). */
 185    if (templat->target == PIPE_BUFFER)
 186       should_tile = false;
 187
 188    if (templat->bind & (PIPE_BIND_LINEAR | PIPE_BIND_SCANOUT))
 189       should_tile = false;
 190
 191    /* if linear buffer is not allowed, alloc fail */
 192    if (!should_tile && !drm_find_modifier(DRM_FORMAT_MOD_LINEAR, modifiers, count))
 193       return NULL;
 194
 195    if (should_tile || (templat->bind & PIPE_BIND_RENDER_TARGET) ||
 196        (templat->bind & PIPE_BIND_DEPTH_STENCIL)) {
 197       should_align_dimensions = true;
 198       width = align(templat->width0, 16);
 199       height = align(templat->height0, 16);
 200    }
 201    else {
 202       should_align_dimensions = false;
 203       width = templat->width0;
 204       height = templat->height0;
 205    }
 206
 207    struct pipe_resource *pres;
 208    if (screen->ro && (templat->bind & PIPE_BIND_SCANOUT))
 209       pres = lima_resource_create_scanout(pscreen, templat, width, height);
 210    else
 211       pres = lima_resource_create_bo(pscreen, templat, width, height,
 212                                      should_align_dimensions);
 213
 214    if (pres) {
 215       struct lima_resource *res = lima_resource(pres);
 216       res->tiled = should_tile;
 217
 218       debug_printf("%s: pres=%p width=%u height=%u depth=%u target=%d "
 219                    "bind=%x usage=%d tile=%d last_level=%d\n", __func__,
 220                    pres, pres->width0, pres->height0, pres->depth0,
 221                    pres->target, pres->bind, pres->usage, should_tile, templat->last_level);
 222    }
 223    return pres;
 224 }
 225
 226 static struct pipe_resource *
 227 lima_resource_create(struct pipe_screen *pscreen,
 228                      const struct pipe_resource *templat)
 229 {
 230    static const uint64_t modifiers[] = {
 231       DRM_FORMAT_MOD_LINEAR,
 232    };
 233    return _lima_resource_create_with_modifiers(pscreen, templat, modifiers, ARRAY_SIZE(modifiers));
 234 }
 235
 236 static struct pipe_resource *
 237 lima_resource_create_with_modifiers(struct pipe_screen *pscreen,
 238                                     const struct pipe_resource *templat,
 239                                     const uint64_t *modifiers,
 240                                     int count)
 241 {
 242    struct pipe_resource tmpl = *templat;
 243
 244    /* gbm_bo_create_with_modifiers & gbm_surface_create_with_modifiers
 245     * don't have usage parameter, but buffer created by these functions
 246     * may be used for scanout. So we assume buffer created by this
 247     * function always enable scanout if linear modifier is permitted.
 248     */
 249    if (drm_find_modifier(DRM_FORMAT_MOD_LINEAR, modifiers, count))
 250       tmpl.bind |= PIPE_BIND_SCANOUT;
 251
 252    return _lima_resource_create_with_modifiers(pscreen, &tmpl, modifiers, count);
 253 }
 254
 255 static void
 256 lima_resource_destroy(struct pipe_screen *pscreen, struct pipe_resource *pres)
 257 {
 258    struct lima_screen *screen = lima_screen(pscreen);
 259    struct lima_resource *res = lima_resource(pres);
 260
 261    if (res->bo)
 262       lima_bo_unreference(res->bo);
 263
 264    if (res->scanout)
 265       renderonly_scanout_destroy(res->scanout, screen->ro);
 266
 267    if (res->damage.region)
 268       FREE(res->damage.region);
 269
 270    FREE(res);
 271 }
 272
 273 static struct pipe_resource *
 274 lima_resource_from_handle(struct pipe_screen *pscreen,
 275         const struct pipe_resource *templat,
 276         struct winsys_handle *handle, unsigned usage)
 277 {
 278    struct lima_resource *res;
 279    struct lima_screen *screen = lima_screen(pscreen);
 280
 281    res = CALLOC_STRUCT(lima_resource);
 282    if (!res)
 283       return NULL;
 284
 285    struct pipe_resource *pres = &res->base;
 286    *pres = *templat;
 287    pres->screen = pscreen;
 288    pipe_reference_init(&pres->reference, 1);
 289    res->levels[0].offset = 0;
 290    res->levels[0].stride = handle->stride;
 291
 292    res->bo = lima_bo_import(screen, handle);
 293    if (!res->bo) {
 294       FREE(res);
 295       return NULL;
 296    }
 297
 298    /* check alignment for the buffer */
 299    if (pres->bind & PIPE_BIND_RENDER_TARGET) {
 300       unsigned width, height, stride, size;
 301
 302       width = align(pres->width0, 16);
 303       height = align(pres->height0, 16);
 304       stride = util_format_get_stride(pres->format, width);
 305       size = util_format_get_2d_size(pres->format, stride, height);
 306
 307       if (res->levels[0].stride != stride || res->bo->size < size) {
 308          debug_error("import buffer not properly aligned\n");
 309          goto err_out;
 310       }
 311
 312       res->levels[0].width = width;
 313    }
 314    else
 315       res->levels[0].width = pres->width0;
 316
 317    handle->modifier = DRM_FORMAT_MOD_LINEAR;
 318    res->tiled = false;
 319
 320    return pres;
 321
 322 err_out:
 323    lima_resource_destroy(pscreen, pres);
 324    return NULL;
 325 }
 326
 327 static bool
 328 lima_resource_get_handle(struct pipe_screen *pscreen,
 329                          struct pipe_context *pctx,
 330                          struct pipe_resource *pres,
 331                          struct winsys_handle *handle, unsigned usage)
 332 {
 333    struct lima_screen *screen = lima_screen(pscreen);
 334    struct lima_resource *res = lima_resource(pres);
 335
 336    handle->modifier = DRM_FORMAT_MOD_LINEAR;
 337
 338    if (handle->type == WINSYS_HANDLE_TYPE_KMS && screen->ro &&
 339        renderonly_get_handle(res->scanout, handle))
 340       return true;
 341
 342    if (!lima_bo_export(res->bo, handle))
 343       return false;
 344
 345    handle->stride = res->levels[0].stride;
 346    return true;
 347 }
 348
 349 static void
 350 get_scissor_from_box(struct pipe_scissor_state *s,
 351                      const struct pipe_box *b, int h)
 352 {
 353    int y = h - (b->y + b->height);
 354    /* region in tile unit */
 355    s->minx = b->x >> 4;
 356    s->miny = y >> 4;
 357    s->maxx = (b->x + b->width + 0xf) >> 4;
 358    s->maxy = (y + b->height + 0xf) >> 4;
 359 }
 360
 361 static void
 362 get_damage_bound_box(struct pipe_resource *pres,
 363                      const struct pipe_box *rects,
 364                      unsigned int nrects,
 365                      struct pipe_scissor_state *bound)
 366 {
 367    struct pipe_box b = rects[0];
 368
 369    for (int i = 1; i < nrects; i++)
 370       u_box_union_2d(&b, &b, rects + i);
 371
 372    int ret = u_box_clip_2d(&b, &b, pres->width0, pres->height0);
 373    if (ret < 0)
 374       memset(bound, 0, sizeof(*bound));
 375    else
 376       get_scissor_from_box(bound, &b, pres->height0);
 377 }
 378
 379 static void
 380 lima_resource_set_damage_region(struct pipe_screen *pscreen,
 381                                 struct pipe_resource *pres,
 382                                 unsigned int nrects,
 383                                 const struct pipe_box *rects)
 384 {
 385    struct lima_resource *res = lima_resource(pres);
 386    struct lima_damage_region *damage = &res->damage;
 387    int i;
 388
 389    if (damage->region) {
 390       FREE(damage->region);
 391       damage->region = NULL;
 392       damage->num_region = 0;
 393    }
 394
 395    if (!nrects)
 396       return;
 397
 398    /* check full damage
 399     *
 400     * TODO: currently only check if there is any single damage
 401     * region that can cover the full render target; there may
 402     * be some accurate way, but a single window size damage
 403     * region is most of the case from weston
 404     */
 405    for (i = 0; i < nrects; i++) {
 406       if (rects[i].x <= 0 && rects[i].y <= 0 &&
 407           rects[i].x + rects[i].width >= pres->width0 &&
 408           rects[i].y + rects[i].height >= pres->height0)
 409          return;
 410    }
 411
 412    struct pipe_scissor_state *bound = &damage->bound;
 413    get_damage_bound_box(pres, rects, nrects, bound);
 414
 415    damage->region = CALLOC(nrects, sizeof(*damage->region));
 416    if (!damage->region)
 417       return;
 418
 419    for (i = 0; i < nrects; i++)
 420       get_scissor_from_box(damage->region + i, rects + i,
 421                            pres->height0);
 422
 423    /* is region aligned to tiles? */
 424    damage->aligned = true;
 425    for (i = 0; i < nrects; i++) {
 426       if (rects[i].x & 0xf || rects[i].y & 0xf ||
 427           rects[i].width & 0xf || rects[i].height & 0xf) {
 428          damage->aligned = false;
 429          break;
 430       }
 431    }
 432
 433    damage->num_region = nrects;
 434 }
 435
 436 void
 437 lima_resource_screen_init(struct lima_screen *screen)
 438 {
 439    screen->base.resource_create = lima_resource_create;
 440    screen->base.resource_create_with_modifiers = lima_resource_create_with_modifiers;
 441    screen->base.resource_from_handle = lima_resource_from_handle;
 442    screen->base.resource_destroy = lima_resource_destroy;
 443    screen->base.resource_get_handle = lima_resource_get_handle;
 444    screen->base.set_damage_region = lima_resource_set_damage_region;
 445 }
 446
 447 static struct pipe_surface *
 448 lima_surface_create(struct pipe_context *pctx,
 449                     struct pipe_resource *pres,
 450                     const struct pipe_surface *surf_tmpl)
 451 {
 452    struct lima_surface *surf = CALLOC_STRUCT(lima_surface);
 453
 454    if (!surf)
 455       return NULL;
 456
 457    assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 458
 459    struct pipe_surface *psurf = &surf->base;
 460    unsigned level = surf_tmpl->u.tex.level;
 461
 462    pipe_reference_init(&psurf->reference, 1);
 463    pipe_resource_reference(&psurf->texture, pres);
 464
 465    psurf->context = pctx;
 466    psurf->format = surf_tmpl->format;
 467    psurf->width = u_minify(pres->width0, level);
 468    psurf->height = u_minify(pres->height0, level);
 469    psurf->u.tex.level = level;
 470    psurf->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 471    psurf->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 472
 473    surf->tiled_w = align(psurf->width, 16) >> 4;
 474    surf->tiled_h = align(psurf->height, 16) >> 4;
 475
 476    surf->reload = true;
 477
 478    struct lima_context *ctx = lima_context(pctx);
 479    if (ctx->plb_pp_stream) {
 480       struct lima_ctx_plb_pp_stream_key key = {
 481          .tiled_w = surf->tiled_w,
 482          .tiled_h = surf->tiled_h,
 483       };
 484
 485       for (int i = 0; i < lima_ctx_num_plb; i++) {
 486          key.plb_index = i;
 487
 488          struct hash_entry *entry =
 489             _mesa_hash_table_search(ctx->plb_pp_stream, &key);
 490          if (entry) {
 491             struct lima_ctx_plb_pp_stream *s = entry->data;
 492             s->refcnt++;
 493          }
 494          else {
 495             struct lima_ctx_plb_pp_stream *s =
 496                ralloc(ctx->plb_pp_stream, struct lima_ctx_plb_pp_stream);
 497             s->key.plb_index = i;
 498             s->key.tiled_w = surf->tiled_w;
 499             s->key.tiled_h = surf->tiled_h;
 500             s->refcnt = 1;
 501             s->bo = NULL;
 502             _mesa_hash_table_insert(ctx->plb_pp_stream, &s->key, s);
 503          }
 504       }
 505    }
 506
 507    return &surf->base;
 508 }
 509
 510 static void
 511 lima_surface_destroy(struct pipe_context *pctx, struct pipe_surface *psurf)
 512 {
 513    struct lima_surface *surf = lima_surface(psurf);
 514    /* psurf->context may be not equal with pctx (i.e. glxinfo) */
 515    struct lima_context *ctx = lima_context(psurf->context);
 516
 517    if (ctx->plb_pp_stream) {
 518       struct lima_ctx_plb_pp_stream_key key = {
 519          .tiled_w = surf->tiled_w,
 520          .tiled_h = surf->tiled_h,
 521       };
 522
 523       for (int i = 0; i < lima_ctx_num_plb; i++) {
 524          key.plb_index = i;
 525
 526          struct hash_entry *entry =
 527             _mesa_hash_table_search(ctx->plb_pp_stream, &key);
 528          struct lima_ctx_plb_pp_stream *s = entry->data;
 529          if (--s->refcnt == 0) {
 530             if (s->bo)
 531                lima_bo_unreference(s->bo);
 532             _mesa_hash_table_remove(ctx->plb_pp_stream, entry);
 533             ralloc_free(s);
 534          }
 535       }
 536    }
 537
 538    pipe_resource_reference(&psurf->texture, NULL);
 539    FREE(surf);
 540 }
 541
 542 static void *
 543 lima_transfer_map(struct pipe_context *pctx,
 544                   struct pipe_resource *pres,
 545                   unsigned level,
 546                   unsigned usage,
 547                   const struct pipe_box *box,
 548                   struct pipe_transfer **pptrans)
 549 {
 550    struct lima_context *ctx = lima_context(pctx);
 551    struct lima_resource *res = lima_resource(pres);
 552    struct lima_bo *bo = res->bo;
 553    struct lima_transfer *trans;
 554    struct pipe_transfer *ptrans;
 555
 556    /* No direct mappings of tiled, since we need to manually
 557     * tile/untile.
 558     */
 559    if (res->tiled && (usage & PIPE_TRANSFER_MAP_DIRECTLY))
 560       return NULL;
 561
 562    /* use once buffers are made sure to not read/write overlapped
 563     * range, so no need to sync */
 564    if (pres->usage != PIPE_USAGE_STREAM) {
 565       if (usage & PIPE_TRANSFER_READ_WRITE) {
 566          if (lima_need_flush(ctx, bo, usage & PIPE_TRANSFER_WRITE))
 567             lima_flush(ctx);
 568
 569          unsigned op = usage & PIPE_TRANSFER_WRITE ?
 570             LIMA_GEM_WAIT_WRITE : LIMA_GEM_WAIT_READ;
 571          lima_bo_wait(bo, op, PIPE_TIMEOUT_INFINITE);
 572       }
 573    }
 574
 575    if (!lima_bo_map(bo))
 576       return NULL;
 577
 578    trans = slab_alloc(&ctx->transfer_pool);
 579    if (!trans)
 580       return NULL;
 581
 582    memset(trans, 0, sizeof(*trans));
 583    ptrans = &trans->base;
 584
 585    pipe_resource_reference(&ptrans->resource, pres);
 586    ptrans->level = level;
 587    ptrans->usage = usage;
 588    ptrans->box = *box;
 589
 590    *pptrans = ptrans;
 591
 592    if (res->tiled) {
 593       ptrans->stride = util_format_get_stride(pres->format, ptrans->box.width);
 594       ptrans->layer_stride = ptrans->stride * ptrans->box.height;
 595
 596       trans->staging = malloc(ptrans->stride * ptrans->box.height * ptrans->box.depth);
 597
 598       if (usage & PIPE_TRANSFER_READ)
 599          panfrost_load_tiled_image(trans->staging, bo->map + res->levels[level].offset,
 600                               &ptrans->box,
 601                               ptrans->stride,
 602                               res->levels[level].stride,
 603                               util_format_get_blocksize(pres->format));
 604
 605       return trans->staging;
 606    } else {
 607       ptrans->stride = res->levels[level].stride;
 608       ptrans->layer_stride = ptrans->stride * box->height;
 609
 610       return bo->map + res->levels[level].offset +
 611          box->z * ptrans->layer_stride +
 612          box->y / util_format_get_blockheight(pres->format) * ptrans->stride +
 613          box->x / util_format_get_blockwidth(pres->format) *
 614          util_format_get_blocksize(pres->format);
 615    }
 616 }
 617
 618 static void
 619 lima_transfer_flush_region(struct pipe_context *pctx,
 620                            struct pipe_transfer *ptrans,
 621                            const struct pipe_box *box)
 622 {
 623
 624 }
 625
 626 static void
 627 lima_transfer_unmap(struct pipe_context *pctx,
 628                     struct pipe_transfer *ptrans)
 629 {
 630    struct lima_context *ctx = lima_context(pctx);
 631    struct lima_transfer *trans = lima_transfer(ptrans);
 632    struct lima_resource *res = lima_resource(ptrans->resource);
 633    struct lima_bo *bo = res->bo;
 634    struct pipe_resource *pres;
 635
 636    if (trans->staging) {
 637       pres = &res->base;
 638       if (ptrans->usage & PIPE_TRANSFER_WRITE)
 639          panfrost_store_tiled_image(bo->map + res->levels[ptrans->level].offset, trans->staging,
 640                               &ptrans->box,
 641                               res->levels[ptrans->level].stride,
 642                               ptrans->stride,
 643                               util_format_get_blocksize(pres->format));
 644       free(trans->staging);
 645    }
 646
 647    pipe_resource_reference(&ptrans->resource, NULL);
 648    slab_free(&ctx->transfer_pool, trans);
 649 }
 650
 651 static void
 652 lima_util_blitter_save_states(struct lima_context *ctx)
 653 {
 654    util_blitter_save_blend(ctx->blitter, (void *)ctx->blend);
 655    util_blitter_save_depth_stencil_alpha(ctx->blitter, (void *)ctx->zsa);
 656    util_blitter_save_stencil_ref(ctx->blitter, &ctx->stencil_ref);
 657    util_blitter_save_rasterizer(ctx->blitter, (void *)ctx->rasterizer);
 658    util_blitter_save_fragment_shader(ctx->blitter, ctx->fs);
 659    util_blitter_save_vertex_shader(ctx->blitter, ctx->vs);
 660    util_blitter_save_viewport(ctx->blitter,
 661                               &ctx->viewport.transform);
 662    util_blitter_save_scissor(ctx->blitter, &ctx->scissor);
 663    util_blitter_save_vertex_elements(ctx->blitter,
 664                                      ctx->vertex_elements);
 665    util_blitter_save_vertex_buffer_slot(ctx->blitter,
 666                                         ctx->vertex_buffers.vb);
 667
 668    util_blitter_save_framebuffer(ctx->blitter, &ctx->framebuffer.base);
 669
 670    util_blitter_save_fragment_sampler_states(ctx->blitter,
 671                                              ctx->tex_stateobj.num_samplers,
 672                                              (void**)ctx->tex_stateobj.samplers);
 673    util_blitter_save_fragment_sampler_views(ctx->blitter,
 674                                             ctx->tex_stateobj.num_textures,
 675                                             ctx->tex_stateobj.textures);
 676 }
 677
 678 static void
 679 lima_blit(struct pipe_context *pctx, const struct pipe_blit_info *blit_info)
 680 {
 681    struct lima_context *ctx = lima_context(pctx);
 682    struct pipe_blit_info info = *blit_info;
 683
 684    if (util_try_blit_via_copy_region(pctx, &info)) {
 685       return; /* done */
 686    }
 687
 688    if (info.mask & PIPE_MASK_S) {
 689       debug_printf("lima: cannot blit stencil, skipping\n");
 690       info.mask &= ~PIPE_MASK_S;
 691    }
 692
 693    if (!util_blitter_is_blit_supported(ctx->blitter, &info)) {
 694       debug_printf("lima: blit unsupported %s -> %s\n",
 695                    util_format_short_name(info.src.resource->format),
 696                    util_format_short_name(info.dst.resource->format));
 697       return;
 698    }
 699
 700    lima_util_blitter_save_states(ctx);
 701
 702    util_blitter_blit(ctx->blitter, &info);
 703 }
 704
 705 static void
 706 lima_flush_resource(struct pipe_context *pctx, struct pipe_resource *resource)
 707 {
 708
 709 }
 710
 711 void
 712 lima_resource_context_init(struct lima_context *ctx)
 713 {
 714    ctx->base.create_surface = lima_surface_create;
 715    ctx->base.surface_destroy = lima_surface_destroy;
 716
 717    /* TODO: optimize these functions to read/write data directly
 718     * from/to target instead of creating a staging memory for tiled
 719     * buffer indirectly
 720     */
 721    ctx->base.buffer_subdata = u_default_buffer_subdata;
 722    ctx->base.texture_subdata = u_default_texture_subdata;
 723    ctx->base.resource_copy_region = util_resource_copy_region;
 724
 725    ctx->base.blit = lima_blit;
 726
 727    ctx->base.transfer_map = lima_transfer_map;
 728    ctx->base.transfer_flush_region = lima_transfer_flush_region;
 729    ctx->base.transfer_unmap = lima_transfer_unmap;
 730
 731    ctx->base.flush_resource = lima_flush_resource;
 732 }