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/format/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/ralloc.h"
  35 #include "util/u_drm.h"
  36 #include "renderonly/renderonly.h"
  37
  38 #include "state_tracker/drm_driver.h"
  39
  40 #include "drm-uapi/drm_fourcc.h"
  41 #include "drm-uapi/lima_drm.h"
  42
  43 #include "lima_screen.h"
  44 #include "lima_context.h"
  45 #include "lima_resource.h"
  46 #include "lima_bo.h"
  47 #include "lima_util.h"
  48 #include "pan_tiling.h"
  49
  50 static struct pipe_resource *
  51 lima_resource_create_scanout(struct pipe_screen *pscreen,
  52                              const struct pipe_resource *templat,
  53                              unsigned width, unsigned height)
  54 {
  55    struct lima_screen *screen = lima_screen(pscreen);
  56    struct renderonly_scanout *scanout;
  57    struct winsys_handle handle;
  58    struct pipe_resource *pres;
  59
  60    struct pipe_resource scanout_templat = *templat;
  61    scanout_templat.width0 = width;
  62    scanout_templat.height0 = height;
  63    scanout_templat.screen = pscreen;
  64
  65    scanout = renderonly_scanout_for_resource(&scanout_templat,
  66                                              screen->ro, &handle);
  67    if (!scanout)
  68       return NULL;
  69
  70    assert(handle.type == WINSYS_HANDLE_TYPE_FD);
  71    pres = pscreen->resource_from_handle(pscreen, templat, &handle,
  72                                         PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE);
  73
  74    close(handle.handle);
  75    if (!pres) {
  76       renderonly_scanout_destroy(scanout, screen->ro);
  77       return NULL;
  78    }
  79
  80    struct lima_resource *res = lima_resource(pres);
  81    res->scanout = scanout;
  82
  83    return pres;
  84 }
  85
  86 static uint32_t
  87 setup_miptree(struct lima_resource *res,
  88               unsigned width0, unsigned height0,
  89               bool should_align_dimensions)
  90 {
  91    struct pipe_resource *pres = &res->base;
  92    unsigned level;
  93    unsigned width = width0;
  94    unsigned height = height0;
  95    unsigned depth = pres->depth0;
  96    uint32_t size = 0;
  97
  98    for (level = 0; level <= pres->last_level; level++) {
  99       uint32_t actual_level_size;
 100       uint32_t stride;
 101       unsigned aligned_width;
 102       unsigned aligned_height;
 103
 104       if (should_align_dimensions) {
 105          aligned_width = align(width, 16);
 106          aligned_height = align(height, 16);
 107       } else {
 108          aligned_width = width;
 109          aligned_height = height;
 110       }
 111
 112       stride = util_format_get_stride(pres->format, aligned_width);
 113       actual_level_size = stride *
 114          util_format_get_nblocksy(pres->format, aligned_height) *
 115          pres->array_size * depth;
 116
 117       res->levels[level].width = aligned_width;
 118       res->levels[level].stride = stride;
 119       res->levels[level].offset = size;
 120       res->levels[level].layer_stride = util_format_get_stride(pres->format, align(width, 16)) * align(height, 16);
 121
 122       if (util_format_is_compressed(pres->format))
 123          res->levels[level].layer_stride /= 4;
 124
 125       /* The start address of each level except the last level
 126        * must be 64-aligned in order to be able to pass the
 127        * addresses to the hardware. */
 128       if (level != pres->last_level)
 129          size += align(actual_level_size, 64);
 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 = lima_debug & LIMA_DEBUG_NO_TILING ? false : true;
 181    unsigned width, height;
 182    bool should_align_dimensions;
 183    bool has_user_modifiers = true;
 184
 185    if (count == 1 && modifiers[0] == DRM_FORMAT_MOD_INVALID)
 186       has_user_modifiers = false;
 187
 188    /* VBOs/PBOs are untiled (and 1 height). */
 189    if (templat->target == PIPE_BUFFER)
 190       should_tile = false;
 191
 192    if (templat->bind & (PIPE_BIND_LINEAR | PIPE_BIND_SCANOUT))
 193       should_tile = false;
 194
 195    /* If there's no user modifiers and buffer is shared we use linear */
 196    if (!has_user_modifiers && (templat->bind & PIPE_BIND_SHARED))
 197       should_tile = false;
 198
 199    if (has_user_modifiers &&
 200       !drm_find_modifier(DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED,
 201                          modifiers, count))
 202       should_tile = false;
 203
 204    if (should_tile || (templat->bind & PIPE_BIND_RENDER_TARGET) ||
 205        (templat->bind & PIPE_BIND_DEPTH_STENCIL)) {
 206       should_align_dimensions = true;
 207       width = align(templat->width0, 16);
 208       height = align(templat->height0, 16);
 209    }
 210    else {
 211       should_align_dimensions = false;
 212       width = templat->width0;
 213       height = templat->height0;
 214    }
 215
 216    struct pipe_resource *pres;
 217    if (screen->ro && (templat->bind & PIPE_BIND_SCANOUT))
 218       pres = lima_resource_create_scanout(pscreen, templat, width, height);
 219    else
 220       pres = lima_resource_create_bo(pscreen, templat, width, height,
 221                                      should_align_dimensions);
 222
 223    if (pres) {
 224       struct lima_resource *res = lima_resource(pres);
 225       res->tiled = should_tile;
 226
 227       debug_printf("%s: pres=%p width=%u height=%u depth=%u target=%d "
 228                    "bind=%x usage=%d tile=%d last_level=%d\n", __func__,
 229                    pres, pres->width0, pres->height0, pres->depth0,
 230                    pres->target, pres->bind, pres->usage, should_tile, templat->last_level);
 231    }
 232    return pres;
 233 }
 234
 235 static struct pipe_resource *
 236 lima_resource_create(struct pipe_screen *pscreen,
 237                      const struct pipe_resource *templat)
 238 {
 239    const uint64_t mod = DRM_FORMAT_MOD_INVALID;
 240
 241    return _lima_resource_create_with_modifiers(pscreen, templat, &mod, 1);
 242 }
 243
 244 static struct pipe_resource *
 245 lima_resource_create_with_modifiers(struct pipe_screen *pscreen,
 246                                     const struct pipe_resource *templat,
 247                                     const uint64_t *modifiers,
 248                                     int count)
 249 {
 250    struct pipe_resource tmpl = *templat;
 251
 252    /* gbm_bo_create_with_modifiers & gbm_surface_create_with_modifiers
 253     * don't have usage parameter, but buffer created by these functions
 254     * may be used for scanout. So we assume buffer created by this
 255     * function always enable scanout if linear modifier is permitted.
 256     */
 257    if (drm_find_modifier(DRM_FORMAT_MOD_LINEAR, modifiers, count))
 258       tmpl.bind |= PIPE_BIND_SCANOUT;
 259
 260    return _lima_resource_create_with_modifiers(pscreen, &tmpl, modifiers, count);
 261 }
 262
 263 static void
 264 lima_resource_destroy(struct pipe_screen *pscreen, struct pipe_resource *pres)
 265 {
 266    struct lima_screen *screen = lima_screen(pscreen);
 267    struct lima_resource *res = lima_resource(pres);
 268
 269    if (res->bo)
 270       lima_bo_unreference(res->bo);
 271
 272    if (res->scanout)
 273       renderonly_scanout_destroy(res->scanout, screen->ro);
 274
 275    if (res->damage.region)
 276       FREE(res->damage.region);
 277
 278    FREE(res);
 279 }
 280
 281 static struct pipe_resource *
 282 lima_resource_from_handle(struct pipe_screen *pscreen,
 283         const struct pipe_resource *templat,
 284         struct winsys_handle *handle, unsigned usage)
 285 {
 286    struct lima_resource *res;
 287    struct lima_screen *screen = lima_screen(pscreen);
 288
 289    res = CALLOC_STRUCT(lima_resource);
 290    if (!res)
 291       return NULL;
 292
 293    struct pipe_resource *pres = &res->base;
 294    *pres = *templat;
 295    pres->screen = pscreen;
 296    pipe_reference_init(&pres->reference, 1);
 297    res->levels[0].offset = 0;
 298    res->levels[0].stride = handle->stride;
 299
 300    res->bo = lima_bo_import(screen, handle);
 301    if (!res->bo) {
 302       FREE(res);
 303       return NULL;
 304    }
 305
 306    /* check alignment for the buffer */
 307    if (pres->bind & PIPE_BIND_RENDER_TARGET) {
 308       unsigned width, height, stride, size;
 309
 310       width = align(pres->width0, 16);
 311       height = align(pres->height0, 16);
 312       stride = util_format_get_stride(pres->format, width);
 313       size = util_format_get_2d_size(pres->format, stride, height);
 314
 315       if (res->levels[0].stride != stride || res->bo->size < size) {
 316          debug_error("import buffer not properly aligned\n");
 317          goto err_out;
 318       }
 319
 320       res->levels[0].width = width;
 321    }
 322    else
 323       res->levels[0].width = pres->width0;
 324
 325    switch (handle->modifier) {
 326    case DRM_FORMAT_MOD_LINEAR:
 327       res->tiled = false;
 328       break;
 329    case DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED:
 330       res->tiled = true;
 331       break;
 332    case DRM_FORMAT_MOD_INVALID:
 333       /* Modifier wasn't specified and it's shared buffer. We create these
 334        * as linear, so disable tiling.
 335        */
 336       res->tiled = false;
 337       break;
 338    default:
 339       fprintf(stderr, "Attempted to import unsupported modifier 0x%llx\n",
 340                   (long long)handle->modifier);
 341       goto err_out;
 342    }
 343
 344    return pres;
 345
 346 err_out:
 347    lima_resource_destroy(pscreen, pres);
 348    return NULL;
 349 }
 350
 351 static bool
 352 lima_resource_get_handle(struct pipe_screen *pscreen,
 353                          struct pipe_context *pctx,
 354                          struct pipe_resource *pres,
 355                          struct winsys_handle *handle, unsigned usage)
 356 {
 357    struct lima_screen *screen = lima_screen(pscreen);
 358    struct lima_resource *res = lima_resource(pres);
 359
 360    if (res->tiled)
 361       handle->modifier = DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED;
 362    else
 363       handle->modifier = DRM_FORMAT_MOD_LINEAR;
 364
 365    if (handle->type == WINSYS_HANDLE_TYPE_KMS && screen->ro &&
 366        renderonly_get_handle(res->scanout, handle))
 367       return true;
 368
 369    if (!lima_bo_export(res->bo, handle))
 370       return false;
 371
 372    handle->stride = res->levels[0].stride;
 373    return true;
 374 }
 375
 376 static void
 377 get_scissor_from_box(struct pipe_scissor_state *s,
 378                      const struct pipe_box *b, int h)
 379 {
 380    int y = h - (b->y + b->height);
 381    /* region in tile unit */
 382    s->minx = b->x >> 4;
 383    s->miny = y >> 4;
 384    s->maxx = (b->x + b->width + 0xf) >> 4;
 385    s->maxy = (y + b->height + 0xf) >> 4;
 386 }
 387
 388 static void
 389 get_damage_bound_box(struct pipe_resource *pres,
 390                      const struct pipe_box *rects,
 391                      unsigned int nrects,
 392                      struct pipe_scissor_state *bound)
 393 {
 394    struct pipe_box b = rects[0];
 395
 396    for (int i = 1; i < nrects; i++)
 397       u_box_union_2d(&b, &b, rects + i);
 398
 399    int ret = u_box_clip_2d(&b, &b, pres->width0, pres->height0);
 400    if (ret < 0)
 401       memset(bound, 0, sizeof(*bound));
 402    else
 403       get_scissor_from_box(bound, &b, pres->height0);
 404 }
 405
 406 static void
 407 lima_resource_set_damage_region(struct pipe_screen *pscreen,
 408                                 struct pipe_resource *pres,
 409                                 unsigned int nrects,
 410                                 const struct pipe_box *rects)
 411 {
 412    struct lima_resource *res = lima_resource(pres);
 413    struct lima_damage_region *damage = &res->damage;
 414    int i;
 415
 416    if (damage->region) {
 417       FREE(damage->region);
 418       damage->region = NULL;
 419       damage->num_region = 0;
 420    }
 421
 422    if (!nrects)
 423       return;
 424
 425    /* check full damage
 426     *
 427     * TODO: currently only check if there is any single damage
 428     * region that can cover the full render target; there may
 429     * be some accurate way, but a single window size damage
 430     * region is most of the case from weston
 431     */
 432    for (i = 0; i < nrects; i++) {
 433       if (rects[i].x <= 0 && rects[i].y <= 0 &&
 434           rects[i].x + rects[i].width >= pres->width0 &&
 435           rects[i].y + rects[i].height >= pres->height0)
 436          return;
 437    }
 438
 439    struct pipe_scissor_state *bound = &damage->bound;
 440    get_damage_bound_box(pres, rects, nrects, bound);
 441
 442    damage->region = CALLOC(nrects, sizeof(*damage->region));
 443    if (!damage->region)
 444       return;
 445
 446    for (i = 0; i < nrects; i++)
 447       get_scissor_from_box(damage->region + i, rects + i,
 448                            pres->height0);
 449
 450    /* is region aligned to tiles? */
 451    damage->aligned = true;
 452    for (i = 0; i < nrects; i++) {
 453       if (rects[i].x & 0xf || rects[i].y & 0xf ||
 454           rects[i].width & 0xf || rects[i].height & 0xf) {
 455          damage->aligned = false;
 456          break;
 457       }
 458    }
 459
 460    damage->num_region = nrects;
 461 }
 462
 463 void
 464 lima_resource_screen_init(struct lima_screen *screen)
 465 {
 466    screen->base.resource_create = lima_resource_create;
 467    screen->base.resource_create_with_modifiers = lima_resource_create_with_modifiers;
 468    screen->base.resource_from_handle = lima_resource_from_handle;
 469    screen->base.resource_destroy = lima_resource_destroy;
 470    screen->base.resource_get_handle = lima_resource_get_handle;
 471    screen->base.set_damage_region = lima_resource_set_damage_region;
 472 }
 473
 474 static struct pipe_surface *
 475 lima_surface_create(struct pipe_context *pctx,
 476                     struct pipe_resource *pres,
 477                     const struct pipe_surface *surf_tmpl)
 478 {
 479    struct lima_surface *surf = CALLOC_STRUCT(lima_surface);
 480
 481    if (!surf)
 482       return NULL;
 483
 484    assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 485
 486    struct pipe_surface *psurf = &surf->base;
 487    unsigned level = surf_tmpl->u.tex.level;
 488
 489    pipe_reference_init(&psurf->reference, 1);
 490    pipe_resource_reference(&psurf->texture, pres);
 491
 492    psurf->context = pctx;
 493    psurf->format = surf_tmpl->format;
 494    psurf->width = u_minify(pres->width0, level);
 495    psurf->height = u_minify(pres->height0, level);
 496    psurf->u.tex.level = level;
 497    psurf->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 498    psurf->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 499
 500    surf->tiled_w = align(psurf->width, 16) >> 4;
 501    surf->tiled_h = align(psurf->height, 16) >> 4;
 502
 503    surf->reload = true;
 504
 505    return &surf->base;
 506 }
 507
 508 static void
 509 lima_surface_destroy(struct pipe_context *pctx, struct pipe_surface *psurf)
 510 {
 511    struct lima_surface *surf = lima_surface(psurf);
 512
 513    pipe_resource_reference(&psurf->texture, NULL);
 514    FREE(surf);
 515 }
 516
 517 static void *
 518 lima_transfer_map(struct pipe_context *pctx,
 519                   struct pipe_resource *pres,
 520                   unsigned level,
 521                   unsigned usage,
 522                   const struct pipe_box *box,
 523                   struct pipe_transfer **pptrans)
 524 {
 525    struct lima_context *ctx = lima_context(pctx);
 526    struct lima_resource *res = lima_resource(pres);
 527    struct lima_bo *bo = res->bo;
 528    struct lima_transfer *trans;
 529    struct pipe_transfer *ptrans;
 530
 531    /* No direct mappings of tiled, since we need to manually
 532     * tile/untile.
 533     */
 534    if (res->tiled && (usage & PIPE_TRANSFER_MAP_DIRECTLY))
 535       return NULL;
 536
 537    /* use once buffers are made sure to not read/write overlapped
 538     * range, so no need to sync */
 539    if (pres->usage != PIPE_USAGE_STREAM) {
 540       if (usage & PIPE_TRANSFER_READ_WRITE) {
 541          lima_flush_job_accessing_bo(ctx, bo, usage & PIPE_TRANSFER_WRITE);
 542
 543          unsigned op = usage & PIPE_TRANSFER_WRITE ?
 544             LIMA_GEM_WAIT_WRITE : LIMA_GEM_WAIT_READ;
 545          lima_bo_wait(bo, op, PIPE_TIMEOUT_INFINITE);
 546       }
 547    }
 548
 549    if (!lima_bo_map(bo))
 550       return NULL;
 551
 552    trans = slab_alloc(&ctx->transfer_pool);
 553    if (!trans)
 554       return NULL;
 555
 556    memset(trans, 0, sizeof(*trans));
 557    ptrans = &trans->base;
 558
 559    pipe_resource_reference(&ptrans->resource, pres);
 560    ptrans->level = level;
 561    ptrans->usage = usage;
 562    ptrans->box = *box;
 563
 564    *pptrans = ptrans;
 565
 566    if (res->tiled) {
 567       ptrans->stride = util_format_get_stride(pres->format, ptrans->box.width);
 568       ptrans->layer_stride = ptrans->stride * ptrans->box.height;
 569
 570       trans->staging = malloc(ptrans->stride * ptrans->box.height * ptrans->box.depth);
 571
 572       if (usage & PIPE_TRANSFER_READ) {
 573          unsigned i;
 574          for (i = 0; i < ptrans->box.depth; i++)
 575             panfrost_load_tiled_image(
 576                trans->staging + i * ptrans->stride * ptrans->box.height,
 577                bo->map + res->levels[level].offset + (i + box->z) * res->levels[level].layer_stride,
 578                ptrans->box.x, ptrans->box.y,
 579                ptrans->box.width, ptrans->box.height,
 580                ptrans->stride,
 581                res->levels[level].stride,
 582                pres->format);
 583       }
 584
 585       return trans->staging;
 586    } else {
 587       ptrans->stride = res->levels[level].stride;
 588       ptrans->layer_stride = res->levels[level].layer_stride;
 589
 590       return bo->map + res->levels[level].offset +
 591          box->z * res->levels[level].layer_stride +
 592          box->y / util_format_get_blockheight(pres->format) * ptrans->stride +
 593          box->x / util_format_get_blockwidth(pres->format) *
 594          util_format_get_blocksize(pres->format);
 595    }
 596 }
 597
 598 static void
 599 lima_transfer_flush_region(struct pipe_context *pctx,
 600                            struct pipe_transfer *ptrans,
 601                            const struct pipe_box *box)
 602 {
 603
 604 }
 605
 606 static void
 607 lima_transfer_unmap(struct pipe_context *pctx,
 608                     struct pipe_transfer *ptrans)
 609 {
 610    struct lima_context *ctx = lima_context(pctx);
 611    struct lima_transfer *trans = lima_transfer(ptrans);
 612    struct lima_resource *res = lima_resource(ptrans->resource);
 613    struct lima_bo *bo = res->bo;
 614    struct pipe_resource *pres;
 615
 616    if (trans->staging) {
 617       pres = &res->base;
 618       if (ptrans->usage & PIPE_TRANSFER_WRITE) {
 619          unsigned i;
 620          for (i = 0; i < ptrans->box.depth; i++)
 621             panfrost_store_tiled_image(
 622                bo->map + res->levels[ptrans->level].offset + (i + ptrans->box.z) * res->levels[ptrans->level].layer_stride,
 623                trans->staging + i * ptrans->stride * ptrans->box.height,
 624                ptrans->box.x, ptrans->box.y,
 625                ptrans->box.width, ptrans->box.height,
 626                res->levels[ptrans->level].stride,
 627                ptrans->stride,
 628                pres->format);
 629       }
 630       free(trans->staging);
 631    }
 632
 633    pipe_resource_reference(&ptrans->resource, NULL);
 634    slab_free(&ctx->transfer_pool, trans);
 635 }
 636
 637 static void
 638 lima_util_blitter_save_states(struct lima_context *ctx)
 639 {
 640    util_blitter_save_blend(ctx->blitter, (void *)ctx->blend);
 641    util_blitter_save_depth_stencil_alpha(ctx->blitter, (void *)ctx->zsa);
 642    util_blitter_save_stencil_ref(ctx->blitter, &ctx->stencil_ref);
 643    util_blitter_save_rasterizer(ctx->blitter, (void *)ctx->rasterizer);
 644    util_blitter_save_fragment_shader(ctx->blitter, ctx->fs);
 645    util_blitter_save_vertex_shader(ctx->blitter, ctx->vs);
 646    util_blitter_save_viewport(ctx->blitter,
 647                               &ctx->viewport.transform);
 648    util_blitter_save_scissor(ctx->blitter, &ctx->scissor);
 649    util_blitter_save_vertex_elements(ctx->blitter,
 650                                      ctx->vertex_elements);
 651    util_blitter_save_vertex_buffer_slot(ctx->blitter,
 652                                         ctx->vertex_buffers.vb);
 653
 654    util_blitter_save_framebuffer(ctx->blitter, &ctx->framebuffer.base);
 655
 656    util_blitter_save_fragment_sampler_states(ctx->blitter,
 657                                              ctx->tex_stateobj.num_samplers,
 658                                              (void**)ctx->tex_stateobj.samplers);
 659    util_blitter_save_fragment_sampler_views(ctx->blitter,
 660                                             ctx->tex_stateobj.num_textures,
 661                                             ctx->tex_stateobj.textures);
 662 }
 663
 664 static void
 665 lima_blit(struct pipe_context *pctx, const struct pipe_blit_info *blit_info)
 666 {
 667    struct lima_context *ctx = lima_context(pctx);
 668    struct pipe_blit_info info = *blit_info;
 669
 670    if (util_try_blit_via_copy_region(pctx, &info)) {
 671       return; /* done */
 672    }
 673
 674    if (info.mask & PIPE_MASK_S) {
 675       debug_printf("lima: cannot blit stencil, skipping\n");
 676       info.mask &= ~PIPE_MASK_S;
 677    }
 678
 679    if (!util_blitter_is_blit_supported(ctx->blitter, &info)) {
 680       debug_printf("lima: blit unsupported %s -> %s\n",
 681                    util_format_short_name(info.src.resource->format),
 682                    util_format_short_name(info.dst.resource->format));
 683       return;
 684    }
 685
 686    lima_util_blitter_save_states(ctx);
 687
 688    util_blitter_blit(ctx->blitter, &info);
 689 }
 690
 691 static void
 692 lima_flush_resource(struct pipe_context *pctx, struct pipe_resource *resource)
 693 {
 694
 695 }
 696
 697 void
 698 lima_resource_context_init(struct lima_context *ctx)
 699 {
 700    ctx->base.create_surface = lima_surface_create;
 701    ctx->base.surface_destroy = lima_surface_destroy;
 702
 703    /* TODO: optimize these functions to read/write data directly
 704     * from/to target instead of creating a staging memory for tiled
 705     * buffer indirectly
 706     */
 707    ctx->base.buffer_subdata = u_default_buffer_subdata;
 708    ctx->base.texture_subdata = u_default_texture_subdata;
 709    ctx->base.resource_copy_region = util_resource_copy_region;
 710
 711    ctx->base.blit = lima_blit;
 712
 713    ctx->base.transfer_map = lima_transfer_map;
 714    ctx->base.transfer_flush_region = lima_transfer_flush_region;
 715    ctx->base.transfer_unmap = lima_transfer_unmap;
 716
 717    ctx->base.flush_resource = lima_flush_resource;
 718 }