src/gallium/drivers/nv50/nv50_miptree.c

   1 /*
   2  * Copyright 2008 Ben Skeggs
   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, sublicense,
   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 shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include "pipe/p_state.h"
  24 #include "pipe/p_defines.h"
  25 #include "util/u_inlines.h"
  26 #include "util/u_format.h"
  27
  28 #include "nv50_context.h"
  29 #include "nv50_resource.h"
  30
  31 static INLINE uint32_t
  32 nv50_tex_choose_tile_dims(unsigned nx, unsigned ny, unsigned nz)
  33 {
  34    return nvc0_tex_choose_tile_dims(nx, ny * 2, nz) >> 4;
  35 }
  36
  37 static uint32_t
  38 nv50_mt_choose_storage_type(struct nv50_miptree *mt, boolean compressed)
  39 {
  40    const unsigned ms = util_logbase2(mt->base.base.nr_samples);
  41
  42    uint32_t tile_flags;
  43
  44    if (mt->base.base.bind & PIPE_BIND_CURSOR)
  45       return NOUVEAU_BO_TILE_SCANOUT;
  46
  47    switch (mt->base.base.format) {
  48    case PIPE_FORMAT_Z16_UNORM:
  49       tile_flags = 0x6c00 + (ms << 8);
  50       break;
  51    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
  52       tile_flags = 0x1800 + (ms << 8);
  53       break;
  54    case PIPE_FORMAT_Z24X8_UNORM:
  55    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
  56       tile_flags = 0x22800 + (ms << 8);
  57       break;
  58    case PIPE_FORMAT_Z32_FLOAT:
  59       tile_flags = 0x4000 + (ms << 8);
  60       break;
  61    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
  62       tile_flags = 0x6000 + (ms << 8);
  63       break;
  64    default:
  65       switch (util_format_get_blocksizebits(mt->base.base.format)) {
  66       case 128:
  67          assert(ms < 3);
  68          tile_flags = 0x7400;
  69          break;
  70       case 64:
  71          switch (ms) {
  72          case 2: tile_flags = 0x17c00; break;
  73          case 3: tile_flags = 0x17d00; break;
  74          default:
  75             tile_flags = 0x7000;
  76             break;
  77          }
  78          break;
  79       case 32:
  80          if (mt->base.base.bind & PIPE_BIND_SCANOUT) {
  81             assert(ms == 0);
  82             tile_flags = 0x7a00;
  83          } else {
  84             switch (ms) {
  85             case 2: tile_flags = 0x17800; break;
  86             case 3: tile_flags = 0x17900; break;
  87             default:
  88                tile_flags = 0x7000;
  89                break;
  90             }
  91          }
  92          break;
  93       case 16:
  94       case 8:
  95          tile_flags = 0x7000;
  96          break;
  97       default:
  98          return 0;
  99       }
 100       if (mt->base.base.bind & PIPE_BIND_CURSOR)
 101          tile_flags = 0;
 102    }
 103
 104    if (mt->base.base.bind & (PIPE_BIND_SCANOUT | PIPE_BIND_CURSOR))
 105       tile_flags |= NOUVEAU_BO_TILE_SCANOUT;
 106
 107    if (!compressed)
 108       tile_flags &= ~0x30000;
 109
 110    if (unlikely(mt->base.base.flags & NOUVEAU_RESOURCE_FLAG_LINEAR))
 111       tile_flags &= ~0x3ff00;
 112
 113    return tile_flags;
 114 }
 115
 116 void
 117 nv50_miptree_destroy(struct pipe_screen *pscreen, struct pipe_resource *pt)
 118 {
 119    struct nv50_miptree *mt = nv50_miptree(pt);
 120
 121    nouveau_screen_bo_release(pscreen, mt->base.bo);
 122
 123    FREE(mt);
 124 }
 125
 126 boolean
 127 nv50_miptree_get_handle(struct pipe_screen *pscreen,
 128                         struct pipe_resource *pt,
 129                         struct winsys_handle *whandle)
 130 {
 131    struct nv50_miptree *mt = nv50_miptree(pt);
 132    unsigned stride;
 133
 134    if (!mt || !mt->base.bo)
 135       return FALSE;
 136
 137    stride = util_format_get_stride(mt->base.base.format,
 138                                    mt->base.base.width0);
 139
 140    return nouveau_screen_bo_get_handle(pscreen,
 141                                        mt->base.bo,
 142                                        stride,
 143                                        whandle);
 144 }
 145
 146 const struct u_resource_vtbl nv50_miptree_vtbl =
 147 {
 148    nv50_miptree_get_handle,         /* get_handle */
 149    nv50_miptree_destroy,            /* resource_destroy */
 150    nv50_miptree_transfer_new,       /* get_transfer */
 151    nv50_miptree_transfer_del,       /* transfer_destroy */
 152    nv50_miptree_transfer_map,       /* transfer_map */
 153    u_default_transfer_flush_region, /* transfer_flush_region */
 154    nv50_miptree_transfer_unmap,     /* transfer_unmap */
 155    u_default_transfer_inline_write  /* transfer_inline_write */
 156 };
 157
 158 static INLINE boolean
 159 nv50_miptree_init_ms_mode(struct nv50_miptree *mt)
 160 {
 161    switch (mt->base.base.nr_samples) {
 162    case 8:
 163       mt->ms_mode = NV50_3D_MULTISAMPLE_MODE_MS8;
 164       mt->ms_x = 2;
 165       mt->ms_y = 1;
 166       break;
 167    case 4:
 168       mt->ms_mode = NV50_3D_MULTISAMPLE_MODE_MS4;
 169       mt->ms_x = 1;
 170       mt->ms_y = 1;
 171       break;
 172    case 2:
 173       mt->ms_mode = NV50_3D_MULTISAMPLE_MODE_MS2;
 174       mt->ms_x = 1;
 175       break;
 176    case 1:
 177    case 0:
 178       mt->ms_mode = NV50_3D_MULTISAMPLE_MODE_MS1;
 179       break;
 180    default:
 181       NOUVEAU_ERR("invalid nr_samples: %u\n", mt->base.base.nr_samples);
 182       return FALSE;
 183    }
 184    return TRUE;
 185 }
 186
 187 boolean
 188 nv50_miptree_init_layout_linear(struct nv50_miptree *mt)
 189 {
 190    struct pipe_resource *pt = &mt->base.base;
 191    const unsigned blocksize = util_format_get_blocksize(pt->format);
 192
 193    if (util_format_is_depth_or_stencil(pt->format))
 194       return FALSE;
 195
 196    if ((pt->last_level > 0) || (pt->depth0 > 1) || (pt->array_size > 1))
 197       return FALSE;
 198    if (mt->ms_x | mt->ms_y)
 199       return FALSE;
 200
 201    mt->level[0].pitch = align(pt->width0 * blocksize, 64);
 202
 203    mt->total_size = mt->level[0].pitch * pt->height0;
 204
 205    return TRUE;
 206 }
 207
 208 static void
 209 nv50_miptree_init_layout_tiled(struct nv50_miptree *mt)
 210 {
 211    struct pipe_resource *pt = &mt->base.base;
 212    unsigned w, h, d, l;
 213    const unsigned blocksize = util_format_get_blocksize(pt->format);
 214
 215    mt->layout_3d = pt->target == PIPE_TEXTURE_3D;
 216
 217    w = pt->width0 << mt->ms_x;
 218    h = pt->height0 << mt->ms_y;
 219
 220    /* For 3D textures, a mipmap is spanned by all the layers, for array
 221     * textures and cube maps, each layer contains its own mipmaps.
 222     */
 223    d = mt->layout_3d ? pt->depth0 : 1;
 224
 225    for (l = 0; l <= pt->last_level; ++l) {
 226       struct nv50_miptree_level *lvl = &mt->level[l];
 227       unsigned tsx, tsy, tsz;
 228       unsigned nbx = util_format_get_nblocksx(pt->format, w);
 229       unsigned nby = util_format_get_nblocksy(pt->format, h);
 230
 231       lvl->offset = mt->total_size;
 232
 233       lvl->tile_mode = nv50_tex_choose_tile_dims(nbx, nby, d);
 234
 235       tsx = NV50_TILE_SIZE_X(lvl->tile_mode); /* x is tile row pitch in bytes */
 236       tsy = NV50_TILE_SIZE_Y(lvl->tile_mode);
 237       tsz = NV50_TILE_SIZE_Z(lvl->tile_mode);
 238
 239       lvl->pitch = align(nbx * blocksize, tsx);
 240
 241       mt->total_size += lvl->pitch * align(nby, tsy) * align(d, tsz);
 242
 243       w = u_minify(w, 1);
 244       h = u_minify(h, 1);
 245       d = u_minify(d, 1);
 246    }
 247
 248    if (pt->array_size > 1) {
 249       mt->layer_stride = align(mt->total_size,
 250                                NV50_TILE_SIZE(mt->level[0].tile_mode));
 251       mt->total_size = mt->layer_stride * pt->array_size;
 252    }
 253 }
 254
 255 struct pipe_resource *
 256 nv50_miptree_create(struct pipe_screen *pscreen,
 257                     const struct pipe_resource *templ)
 258 {
 259    struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 260    struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
 261    struct pipe_resource *pt = &mt->base.base;
 262    int ret;
 263    uint32_t tile_flags;
 264
 265    if (!mt)
 266       return NULL;
 267
 268    mt->base.vtbl = &nv50_miptree_vtbl;
 269    *pt = *templ;
 270    pipe_reference_init(&pt->reference, 1);
 271    pt->screen = pscreen;
 272
 273    tile_flags = nv50_mt_choose_storage_type(mt, TRUE);
 274
 275    if (!nv50_miptree_init_ms_mode(mt)) {
 276       FREE(mt);
 277       return NULL;
 278    }
 279
 280    if (tile_flags & NOUVEAU_BO_TILE_LAYOUT_MASK) {
 281       nv50_miptree_init_layout_tiled(mt);
 282    } else
 283    if (!nv50_miptree_init_layout_linear(mt)) {
 284       FREE(mt);
 285       return NULL;
 286    }
 287
 288    ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 4096,
 289                              mt->total_size,
 290                              mt->level[0].tile_mode, tile_flags,
 291                              &mt->base.bo);
 292    if (ret) {
 293       FREE(mt);
 294       return NULL;
 295    }
 296    mt->base.domain = NOUVEAU_BO_VRAM;
 297
 298    return pt;
 299 }
 300
 301 struct pipe_resource *
 302 nv50_miptree_from_handle(struct pipe_screen *pscreen,
 303                          const struct pipe_resource *templ,
 304                          struct winsys_handle *whandle)
 305 {
 306    struct nv50_miptree *mt;
 307    unsigned stride;
 308
 309    /* only supports 2D, non-mipmapped textures for the moment */
 310    if ((templ->target != PIPE_TEXTURE_2D &&
 311         templ->target != PIPE_TEXTURE_RECT) ||
 312        templ->last_level != 0 ||
 313        templ->depth0 != 1 ||
 314        templ->array_size > 1)
 315       return NULL;
 316
 317    mt = CALLOC_STRUCT(nv50_miptree);
 318    if (!mt)
 319       return NULL;
 320
 321    mt->base.bo = nouveau_screen_bo_from_handle(pscreen, whandle, &stride);
 322    if (mt->base.bo == NULL) {
 323       FREE(mt);
 324       return NULL;
 325    }
 326
 327    mt->base.base = *templ;
 328    mt->base.vtbl = &nv50_miptree_vtbl;
 329    pipe_reference_init(&mt->base.base.reference, 1);
 330    mt->base.base.screen = pscreen;
 331    mt->level[0].pitch = stride;
 332    mt->level[0].offset = 0;
 333    mt->level[0].tile_mode = mt->base.bo->tile_mode;
 334
 335    /* no need to adjust bo reference count */
 336    return &mt->base.base;
 337 }
 338
 339
 340 /* Offset of zslice @z from start of level @l. */
 341 INLINE unsigned
 342 nv50_mt_zslice_offset(const struct nv50_miptree *mt, unsigned l, unsigned z)
 343 {
 344    const struct pipe_resource *pt = &mt->base.base;
 345
 346    unsigned tds = NV50_TILE_SHIFT_Z(mt->level[l].tile_mode);
 347    unsigned ths = NV50_TILE_SHIFT_Y(mt->level[l].tile_mode);
 348
 349    unsigned nby = util_format_get_nblocksy(pt->format,
 350                                            u_minify(pt->height0, l));
 351
 352    /* to next 2D tile slice within a 3D tile */
 353    unsigned stride_2d = NV50_TILE_SIZE_2D(mt->level[l].tile_mode);
 354
 355    /* to slice in the next (in z direction) 3D tile */
 356    unsigned stride_3d = (align(nby, (1 << ths)) * mt->level[l].pitch) << tds;
 357
 358    return (z & ((1 << tds) - 1)) * stride_2d + (z >> tds) * stride_3d;
 359 }
 360
 361 /* Surface functions.
 362  */
 363
 364 struct nv50_surface *
 365 nv50_surface_from_miptree(struct nv50_miptree *mt,
 366                           const struct pipe_surface *templ)
 367 {
 368    struct pipe_surface *ps;
 369    struct nv50_surface *ns = CALLOC_STRUCT(nv50_surface);
 370    if (!ns)
 371       return NULL;
 372    ps = &ns->base;
 373
 374    pipe_reference_init(&ps->reference, 1);
 375    pipe_resource_reference(&ps->texture, &mt->base.base);
 376
 377    ps->format = templ->format;
 378    ps->usage = templ->usage;
 379    ps->u.tex.level = templ->u.tex.level;
 380    ps->u.tex.first_layer = templ->u.tex.first_layer;
 381    ps->u.tex.last_layer = templ->u.tex.last_layer;
 382
 383    ns->width = u_minify(mt->base.base.width0, ps->u.tex.level);
 384    ns->height = u_minify(mt->base.base.height0, ps->u.tex.level);
 385    ns->depth = ps->u.tex.last_layer - ps->u.tex.first_layer + 1;
 386    ns->offset = mt->level[templ->u.tex.level].offset;
 387
 388    /* comment says there are going to be removed, but they're used by the st */
 389    ps->width = ns->width;
 390    ps->height = ns->height;
 391
 392    ns->width <<= mt->ms_x;
 393    ns->height <<= mt->ms_y;
 394
 395    return ns;
 396 }
 397
 398 struct pipe_surface *
 399 nv50_miptree_surface_new(struct pipe_context *pipe,
 400                          struct pipe_resource *pt,
 401                          const struct pipe_surface *templ)
 402 {
 403    struct nv50_miptree *mt = nv50_miptree(pt);
 404    struct nv50_surface *ns = nv50_surface_from_miptree(mt, templ);
 405    if (!ns)
 406       return NULL;
 407    ns->base.context = pipe;
 408
 409    if (ns->base.u.tex.first_layer) {
 410       const unsigned l = ns->base.u.tex.level;
 411       const unsigned z = ns->base.u.tex.first_layer;
 412
 413       if (mt->layout_3d) {
 414          ns->offset += nv50_mt_zslice_offset(mt, l, z);
 415
 416          /* TODO: switch to depth 1 tiles; but actually this shouldn't happen */
 417          if (ns->depth > 1 &&
 418              (z & (NV50_TILE_SIZE_Z(mt->level[l].tile_mode) - 1)))
 419             NOUVEAU_ERR("Creating unsupported 3D surface !\n");
 420       } else {
 421          ns->offset += mt->layer_stride * z;
 422       }
 423    }
 424
 425    return &ns->base;
 426 }