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 (mt->base.base.bind & PIPE_BIND_CURSOR)
  69       return NOUVEAU_BO_TILE_SCANOUT;
  70
  71    switch (mt->base.base.format) {
  72    case PIPE_FORMAT_Z16_UNORM:
  73       if (compressed)
  74          tile_flags = 0x0200 + (ms << 8);
  75       else
  76          tile_flags = 0x0100;
  77       break;
  78    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
  79       if (compressed)
  80          tile_flags = 0x5100 + (ms << 8);
  81       else
  82          tile_flags = 0x4600;
  83       break;
  84    case PIPE_FORMAT_Z24X8_UNORM:
  85    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
  86       if (compressed)
  87          tile_flags = 0x1700 + (ms << 8);
  88       else
  89          tile_flags = 0x1100;
  90       break;
  91    case PIPE_FORMAT_Z32_FLOAT:
  92       if (compressed)
  93          tile_flags = 0x8600 + (ms << 8);
  94       else
  95          tile_flags = 0x7b00;
  96       break;
  97    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
  98       if (compressed)
  99          tile_flags = 0xce00 + (ms << 8);
 100       else
 101          tile_flags = 0xc300;
 102       break;
 103    default:
 104       switch (util_format_get_blocksizebits(mt->base.base.format)) {
 105       case 128:
 106          if (compressed)
 107             tile_flags = 0xf400 + (ms << 9);
 108          else
 109             tile_flags = 0xfe00;
 110          break;
 111       case 64:
 112          if (compressed) {
 113             switch (ms) {
 114             case 0: tile_flags = 0xe600; break;
 115             case 1: tile_flags = 0xeb00; break;
 116             case 2: tile_flags = 0xed00; break;
 117             case 3: tile_flags = 0xf200; break;
 118             default:
 119                return 0;
 120             }
 121          } else {
 122             tile_flags = 0xfe00;
 123          }
 124          break;
 125       case 32:
 126          if (compressed) {
 127             switch (ms) {
 128             case 0: tile_flags = 0xdb00; break;
 129             case 1: tile_flags = 0xdd00; break;
 130             case 2: tile_flags = 0xdf00; break;
 131             case 3: tile_flags = 0xe400; break;
 132             default:
 133                return 0;
 134             }
 135          } else {
 136             tile_flags = 0xfe00;
 137          }
 138          break;
 139       case 16:
 140       case 8:
 141          tile_flags = 0xfe00;
 142          break;
 143       default:
 144          return 0;
 145       }
 146       break;
 147    }
 148
 149    if (mt->base.base.bind & PIPE_BIND_SCANOUT)
 150       tile_flags |= NOUVEAU_BO_TILE_SCANOUT;
 151
 152    if (unlikely(mt->base.base.flags & NOUVEAU_RESOURCE_FLAG_LINEAR))
 153       tile_flags &= ~0xff00;
 154
 155    return tile_flags;
 156 }
 157
 158 static INLINE boolean
 159 nvc0_miptree_init_ms_mode(struct nv50_miptree *mt)
 160 {
 161    switch (mt->base.base.nr_samples) {
 162    case 8:
 163       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS8;
 164       mt->ms_x = 2;
 165       mt->ms_y = 1;
 166       break;
 167    case 4:
 168       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS4;
 169       mt->ms_x = 1;
 170       mt->ms_y = 1;
 171       break;
 172    case 2:
 173       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS2;
 174       mt->ms_x = 1;
 175       break;
 176    case 1:
 177    case 0:
 178       mt->ms_mode = NVC0_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 *);
 189
 190 static void
 191 nvc0_miptree_init_layout_video(struct nv50_miptree *mt)
 192 {
 193    const struct pipe_resource *pt = &mt->base.base;
 194    const unsigned blocksize = util_format_get_blocksize(pt->format);
 195
 196    unsigned nbx = util_format_get_nblocksx(pt->format, pt->width0);
 197    unsigned nby = util_format_get_nblocksy(pt->format, pt->height0);
 198
 199    assert(pt->last_level == 0);
 200    assert(mt->ms_x == 0 &&
 201           mt->ms_y == 0);
 202    assert(!util_format_is_compressed(pt->format));
 203
 204    assert(nby > 8);
 205    mt->level[0].tile_mode = 0x10;
 206    mt->level[0].pitch = align(nbx * blocksize, 64);
 207    mt->total_size = align(nby, 16) * mt->level[0].pitch;
 208
 209    if (pt->array_size > 1) {
 210       mt->layer_stride = align(mt->total_size, NVC0_TILE_SIZE(0x10));
 211       mt->total_size = mt->layer_stride * pt->array_size;
 212    }
 213 }
 214
 215 static void
 216 nvc0_miptree_init_layout_tiled(struct nv50_miptree *mt)
 217 {
 218    struct pipe_resource *pt = &mt->base.base;
 219    unsigned w, h, d, l;
 220    const unsigned blocksize = util_format_get_blocksize(pt->format);
 221
 222    mt->layout_3d = pt->target == PIPE_TEXTURE_3D;
 223
 224    w = pt->width0 << mt->ms_x;
 225    h = pt->height0 << mt->ms_y;
 226
 227    /* For 3D textures, a mipmap is spanned by all the layers, for array
 228     * textures and cube maps, each layer contains its own mipmaps.
 229     */
 230    d = mt->layout_3d ? pt->depth0 : 1;
 231
 232    for (l = 0; l <= pt->last_level; ++l) {
 233       struct nv50_miptree_level *lvl = &mt->level[l];
 234       unsigned tsx, tsy, tsz;
 235       unsigned nbx = util_format_get_nblocksx(pt->format, w);
 236       unsigned nby = util_format_get_nblocksy(pt->format, h);
 237
 238       lvl->offset = mt->total_size;
 239
 240       lvl->tile_mode = nvc0_tex_choose_tile_dims(nbx, nby, d);
 241
 242       tsx = NVC0_TILE_SIZE_X(lvl->tile_mode); /* x is tile row pitch in bytes */
 243       tsy = NVC0_TILE_SIZE_Y(lvl->tile_mode);
 244       tsz = NVC0_TILE_SIZE_Z(lvl->tile_mode);
 245
 246       lvl->pitch = align(nbx * blocksize, tsx);
 247
 248       mt->total_size += lvl->pitch * align(nby, tsy) * align(d, tsz);
 249
 250       w = u_minify(w, 1);
 251       h = u_minify(h, 1);
 252       d = u_minify(d, 1);
 253    }
 254
 255    if (pt->array_size > 1) {
 256       mt->layer_stride = align(mt->total_size,
 257                                NVC0_TILE_SIZE(mt->level[0].tile_mode));
 258       mt->total_size = mt->layer_stride * pt->array_size;
 259    }
 260 }
 261
 262 const struct u_resource_vtbl nvc0_miptree_vtbl =
 263 {
 264    nv50_miptree_get_handle,         /* get_handle */
 265    nv50_miptree_destroy,            /* resource_destroy */
 266    nvc0_miptree_transfer_new,       /* get_transfer */
 267    nvc0_miptree_transfer_del,       /* transfer_destroy */
 268    nvc0_miptree_transfer_map,       /* transfer_map */
 269    u_default_transfer_flush_region, /* transfer_flush_region */
 270    nvc0_miptree_transfer_unmap,     /* transfer_unmap */
 271    u_default_transfer_inline_write  /* transfer_inline_write */
 272 };
 273
 274 struct pipe_resource *
 275 nvc0_miptree_create(struct pipe_screen *pscreen,
 276                     const struct pipe_resource *templ)
 277 {
 278    struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 279    struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
 280    struct pipe_resource *pt = &mt->base.base;
 281    int ret;
 282    uint32_t tile_flags;
 283
 284    if (!mt)
 285       return NULL;
 286
 287    mt->base.vtbl = &nvc0_miptree_vtbl;
 288    *pt = *templ;
 289    pipe_reference_init(&pt->reference, 1);
 290    pt->screen = pscreen;
 291
 292    tile_flags = nvc0_mt_choose_storage_type(mt, TRUE);
 293
 294    if (!nvc0_miptree_init_ms_mode(mt)) {
 295       FREE(mt);
 296       return NULL;
 297    }
 298
 299    if (unlikely(pt->flags & NVC0_RESOURCE_FLAG_VIDEO)) {
 300       nvc0_miptree_init_layout_video(mt);
 301    } else
 302    if (tile_flags & NOUVEAU_BO_TILE_LAYOUT_MASK) {
 303       nvc0_miptree_init_layout_tiled(mt);
 304    } else
 305    if (!nv50_miptree_init_layout_linear(mt)) {
 306       FREE(mt);
 307       return NULL;
 308    }
 309
 310    ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 4096,
 311                              mt->total_size,
 312                              mt->level[0].tile_mode, tile_flags,
 313                              &mt->base.bo);
 314    if (ret) {
 315       FREE(mt);
 316       return NULL;
 317    }
 318    mt->base.domain = NOUVEAU_BO_VRAM;
 319
 320    return pt;
 321 }
 322
 323 /* Offset of zslice @z from start of level @l. */
 324 INLINE unsigned
 325 nvc0_mt_zslice_offset(const struct nv50_miptree *mt, unsigned l, unsigned z)
 326 {
 327    const struct pipe_resource *pt = &mt->base.base;
 328
 329    unsigned tds = NVC0_TILE_SHIFT_Z(mt->level[l].tile_mode);
 330    unsigned ths = NVC0_TILE_SHIFT_Y(mt->level[l].tile_mode);
 331
 332    unsigned nby = util_format_get_nblocksy(pt->format,
 333                                            u_minify(pt->height0, l));
 334
 335    /* to next 2D tile slice within a 3D tile */
 336    unsigned stride_2d = NVC0_TILE_SIZE_2D(mt->level[l].tile_mode);
 337
 338    /* to slice in the next (in z direction) 3D tile */
 339    unsigned stride_3d = (align(nby, (1 << ths)) * mt->level[l].pitch) << tds;
 340
 341    return (z & (1 << (tds - 1))) * stride_2d + (z >> tds) * stride_3d;
 342 }
 343
 344 /* Surface functions.
 345  */
 346
 347 struct pipe_surface *
 348 nvc0_miptree_surface_new(struct pipe_context *pipe,
 349                          struct pipe_resource *pt,
 350                          const struct pipe_surface *templ)
 351 {
 352    struct nv50_surface *ns = nv50_surface_from_miptree(nv50_miptree(pt), templ);
 353    if (!ns)
 354       return NULL;
 355    ns->base.context = pipe;
 356    return &ns->base;
 357 }