src/gallium/drivers/nvc0/nvc0_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 "nvc0_context.h"
  29 #include "nvc0_resource.h"
  30
  31 uint32_t
  32 nvc0_tex_choose_tile_dims(unsigned nx, unsigned ny, unsigned nz)
  33 {
  34    uint32_t tile_mode = 0x000;
  35
  36    if (ny > 64) tile_mode = 0x040; /* height 128 tiles */
  37    else
  38    if (ny > 32) tile_mode = 0x030; /* height 64 tiles */
  39    else
  40    if (ny > 16) tile_mode = 0x020; /* height 32 tiles */
  41    else
  42    if (ny >  8) tile_mode = 0x010; /* height 16 tiles */
  43
  44    if (nz == 1)
  45       return tile_mode;
  46    else
  47    if (tile_mode > 0x020)
  48       tile_mode = 0x020;
  49
  50    if (nz > 16 && tile_mode < 0x020)
  51       return tile_mode | 0x500; /* depth 32 tiles */
  52    if (nz > 8) return tile_mode | 0x400; /* depth 16 tiles */
  53    if (nz > 4) return tile_mode | 0x300; /* depth 8 tiles */
  54    if (nz > 2) return tile_mode | 0x200; /* depth 4 tiles */
  55
  56    return tile_mode | 0x100;
  57 }
  58
  59 static uint32_t
  60 nvc0_mt_choose_storage_type(struct nv50_miptree *mt, boolean compressed)
  61 {
  62    const unsigned ms = util_logbase2(mt->base.base.nr_samples);
  63
  64    uint32_t tile_flags;
  65
  66    compressed = FALSE; /* not yet supported */
  67
  68    if (unlikely(mt->base.base.bind & PIPE_BIND_CURSOR))
  69       return 0;
  70    if (unlikely(mt->base.base.flags & NOUVEAU_RESOURCE_FLAG_LINEAR))
  71       return 0;
  72
  73    switch (mt->base.base.format) {
  74    case PIPE_FORMAT_Z16_UNORM:
  75       if (compressed)
  76          tile_flags = 0x02 + ms;
  77       else
  78          tile_flags = 0x01;
  79       break;
  80    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
  81       if (compressed)
  82          tile_flags = 0x51 + ms;
  83       else
  84          tile_flags = 0x46;
  85       break;
  86    case PIPE_FORMAT_Z24X8_UNORM:
  87    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
  88       if (compressed)
  89          tile_flags = 0x17 + ms;
  90       else
  91          tile_flags = 0x11;
  92       break;
  93    case PIPE_FORMAT_Z32_FLOAT:
  94       if (compressed)
  95          tile_flags = 0x86 + ms;
  96       else
  97          tile_flags = 0x7b;
  98       break;
  99    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
 100       if (compressed)
 101          tile_flags = 0xce + ms;
 102       else
 103          tile_flags = 0xc3;
 104       break;
 105    default:
 106       switch (util_format_get_blocksizebits(mt->base.base.format)) {
 107       case 128:
 108          if (compressed)
 109             tile_flags = 0xf4 + ms;
 110          else
 111             tile_flags = 0xfe;
 112          break;
 113       case 64:
 114          if (compressed) {
 115             switch (ms) {
 116             case 0: tile_flags = 0xe6; break;
 117             case 1: tile_flags = 0xeb; break;
 118             case 2: tile_flags = 0xed; break;
 119             case 3: tile_flags = 0xf2; break;
 120             default:
 121                return 0;
 122             }
 123          } else {
 124             tile_flags = 0xfe;
 125          }
 126          break;
 127       case 32:
 128          if (compressed) {
 129             switch (ms) {
 130             case 0: tile_flags = 0xdb; break;
 131             case 1: tile_flags = 0xdd; break;
 132             case 2: tile_flags = 0xdf; break;
 133             case 3: tile_flags = 0xe4; break;
 134             default:
 135                return 0;
 136             }
 137          } else {
 138             tile_flags = 0xfe;
 139          }
 140          break;
 141       case 16:
 142       case 8:
 143          tile_flags = 0xfe;
 144          break;
 145       default:
 146          return 0;
 147       }
 148       break;
 149    }
 150
 151    return tile_flags;
 152 }
 153
 154 static INLINE boolean
 155 nvc0_miptree_init_ms_mode(struct nv50_miptree *mt)
 156 {
 157    switch (mt->base.base.nr_samples) {
 158    case 8:
 159       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS8;
 160       mt->ms_x = 2;
 161       mt->ms_y = 1;
 162       break;
 163    case 4:
 164       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS4;
 165       mt->ms_x = 1;
 166       mt->ms_y = 1;
 167       break;
 168    case 2:
 169       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS2;
 170       mt->ms_x = 1;
 171       break;
 172    case 1:
 173    case 0:
 174       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS1;
 175       break;
 176    default:
 177       NOUVEAU_ERR("invalid nr_samples: %u\n", mt->base.base.nr_samples);
 178       return FALSE;
 179    }
 180    return TRUE;
 181 }
 182
 183 boolean
 184 nv50_miptree_init_layout_linear(struct nv50_miptree *);
 185
 186 static void
 187 nvc0_miptree_init_layout_video(struct nv50_miptree *mt)
 188 {
 189    const struct pipe_resource *pt = &mt->base.base;
 190    const unsigned blocksize = util_format_get_blocksize(pt->format);
 191
 192    unsigned nbx = util_format_get_nblocksx(pt->format, pt->width0);
 193    unsigned nby = util_format_get_nblocksy(pt->format, pt->height0);
 194
 195    assert(pt->last_level == 0);
 196    assert(mt->ms_x == 0 &&
 197           mt->ms_y == 0);
 198    assert(!util_format_is_compressed(pt->format));
 199
 200    assert(nby > 8);
 201    mt->level[0].tile_mode = 0x10;
 202    mt->level[0].pitch = align(nbx * blocksize, 64);
 203    mt->total_size = align(nby, 16) * mt->level[0].pitch;
 204
 205    if (pt->array_size > 1) {
 206       mt->layer_stride = align(mt->total_size, NVC0_TILE_SIZE(0x10));
 207       mt->total_size = mt->layer_stride * pt->array_size;
 208    }
 209 }
 210
 211 static void
 212 nvc0_miptree_init_layout_tiled(struct nv50_miptree *mt)
 213 {
 214    struct pipe_resource *pt = &mt->base.base;
 215    unsigned w, h, d, l;
 216    const unsigned blocksize = util_format_get_blocksize(pt->format);
 217
 218    mt->layout_3d = pt->target == PIPE_TEXTURE_3D;
 219
 220    w = pt->width0 << mt->ms_x;
 221    h = pt->height0 << mt->ms_y;
 222
 223    /* For 3D textures, a mipmap is spanned by all the layers, for array
 224     * textures and cube maps, each layer contains its own mipmaps.
 225     */
 226    d = mt->layout_3d ? pt->depth0 : 1;
 227
 228    for (l = 0; l <= pt->last_level; ++l) {
 229       struct nv50_miptree_level *lvl = &mt->level[l];
 230       unsigned tsx, tsy, tsz;
 231       unsigned nbx = util_format_get_nblocksx(pt->format, w);
 232       unsigned nby = util_format_get_nblocksy(pt->format, h);
 233
 234       lvl->offset = mt->total_size;
 235
 236       lvl->tile_mode = nvc0_tex_choose_tile_dims(nbx, nby, d);
 237
 238       tsx = NVC0_TILE_SIZE_X(lvl->tile_mode); /* x is tile row pitch in bytes */
 239       tsy = NVC0_TILE_SIZE_Y(lvl->tile_mode);
 240       tsz = NVC0_TILE_SIZE_Z(lvl->tile_mode);
 241
 242       lvl->pitch = align(nbx * blocksize, tsx);
 243
 244       mt->total_size += lvl->pitch * align(nby, tsy) * align(d, tsz);
 245
 246       w = u_minify(w, 1);
 247       h = u_minify(h, 1);
 248       d = u_minify(d, 1);
 249    }
 250
 251    if (pt->array_size > 1) {
 252       mt->layer_stride = align(mt->total_size,
 253                                NVC0_TILE_SIZE(mt->level[0].tile_mode));
 254       mt->total_size = mt->layer_stride * pt->array_size;
 255    }
 256 }
 257
 258 const struct u_resource_vtbl nvc0_miptree_vtbl =
 259 {
 260    nv50_miptree_get_handle,         /* get_handle */
 261    nv50_miptree_destroy,            /* resource_destroy */
 262    nvc0_miptree_transfer_new,       /* get_transfer */
 263    nvc0_miptree_transfer_del,       /* transfer_destroy */
 264    nvc0_miptree_transfer_map,       /* transfer_map */
 265    u_default_transfer_flush_region, /* transfer_flush_region */
 266    nvc0_miptree_transfer_unmap,     /* transfer_unmap */
 267    u_default_transfer_inline_write  /* transfer_inline_write */
 268 };
 269
 270 struct pipe_resource *
 271 nvc0_miptree_create(struct pipe_screen *pscreen,
 272                     const struct pipe_resource *templ)
 273 {
 274    struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 275    struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
 276    struct pipe_resource *pt = &mt->base.base;
 277    int ret;
 278    union nouveau_bo_config bo_config;
 279    uint32_t bo_flags;
 280
 281    if (!mt)
 282       return NULL;
 283
 284    mt->base.vtbl = &nvc0_miptree_vtbl;
 285    *pt = *templ;
 286    pipe_reference_init(&pt->reference, 1);
 287    pt->screen = pscreen;
 288
 289    bo_config.nvc0.memtype = nvc0_mt_choose_storage_type(mt, TRUE);
 290
 291    if (!nvc0_miptree_init_ms_mode(mt)) {
 292       FREE(mt);
 293       return NULL;
 294    }
 295
 296    if (unlikely(pt->flags & NVC0_RESOURCE_FLAG_VIDEO)) {
 297       nvc0_miptree_init_layout_video(mt);
 298    } else
 299    if (likely(bo_config.nvc0.memtype)) {
 300       nvc0_miptree_init_layout_tiled(mt);
 301    } else
 302    if (!nv50_miptree_init_layout_linear(mt)) {
 303       FREE(mt);
 304       return NULL;
 305    }
 306    bo_config.nvc0.tile_mode = mt->level[0].tile_mode;
 307
 308    mt->base.domain = NOUVEAU_BO_VRAM;
 309
 310    bo_flags = mt->base.domain | NOUVEAU_BO_NOSNOOP;
 311
 312    if (mt->base.base.bind & (PIPE_BIND_CURSOR | PIPE_BIND_DISPLAY_TARGET))
 313       bo_flags |= NOUVEAU_BO_CONTIG;
 314
 315    ret = nouveau_bo_new(dev, bo_flags, 4096, mt->total_size, &bo_config,
 316                         &mt->base.bo);
 317    if (ret) {
 318       FREE(mt);
 319       return NULL;
 320    }
 321    mt->base.address = mt->base.bo->offset;
 322
 323    return pt;
 324 }
 325
 326 /* Offset of zslice @z from start of level @l. */
 327 INLINE unsigned
 328 nvc0_mt_zslice_offset(const struct nv50_miptree *mt, unsigned l, unsigned z)
 329 {
 330    const struct pipe_resource *pt = &mt->base.base;
 331
 332    unsigned tds = NVC0_TILE_SHIFT_Z(mt->level[l].tile_mode);
 333    unsigned ths = NVC0_TILE_SHIFT_Y(mt->level[l].tile_mode);
 334
 335    unsigned nby = util_format_get_nblocksy(pt->format,
 336                                            u_minify(pt->height0, l));
 337
 338    /* to next 2D tile slice within a 3D tile */
 339    unsigned stride_2d = NVC0_TILE_SIZE_2D(mt->level[l].tile_mode);
 340
 341    /* to slice in the next (in z direction) 3D tile */
 342    unsigned stride_3d = (align(nby, (1 << ths)) * mt->level[l].pitch) << tds;
 343
 344    return (z & (1 << (tds - 1))) * stride_2d + (z >> tds) * stride_3d;
 345 }
 346
 347 /* Surface functions.
 348  */
 349
 350 struct pipe_surface *
 351 nvc0_miptree_surface_new(struct pipe_context *pipe,
 352                          struct pipe_resource *pt,
 353                          const struct pipe_surface *templ)
 354 {
 355    struct nv50_surface *ns = nv50_surface_from_miptree(nv50_miptree(pt), templ);
 356    if (!ns)
 357       return NULL;
 358    ns->base.context = pipe;
 359    return &ns->base;
 360 }