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    return tile_flags;
 153 }
 154
 155 static INLINE boolean
 156 nvc0_miptree_init_ms_mode(struct nv50_miptree *mt)
 157 {
 158    switch (mt->base.base.nr_samples) {
 159    case 8:
 160       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS8;
 161       mt->ms_x = 2;
 162       mt->ms_y = 1;
 163       break;
 164    case 4:
 165       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS4;
 166       mt->ms_x = 1;
 167       mt->ms_y = 1;
 168       break;
 169    case 2:
 170       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS2;
 171       mt->ms_x = 1;
 172       break;
 173    case 1:
 174    case 0:
 175       mt->ms_mode = NVC0_3D_MULTISAMPLE_MODE_MS1;
 176       break;
 177    default:
 178       NOUVEAU_ERR("invalid nr_samples: %u\n", mt->base.base.nr_samples);
 179       return FALSE;
 180    }
 181    return TRUE;
 182 }
 183
 184 boolean
 185 nv50_miptree_init_layout_linear(struct nv50_miptree *);
 186
 187 static void
 188 nvc0_miptree_init_layout_tiled(struct nv50_miptree *mt)
 189 {
 190    struct pipe_resource *pt = &mt->base.base;
 191    unsigned w, h, d, l;
 192    const unsigned blocksize = util_format_get_blocksize(pt->format);
 193
 194    mt->layout_3d = pt->target == PIPE_TEXTURE_3D;
 195
 196    w = pt->width0 << mt->ms_x;
 197    h = pt->height0 << mt->ms_y;
 198
 199    /* For 3D textures, a mipmap is spanned by all the layers, for array
 200     * textures and cube maps, each layer contains its own mipmaps.
 201     */
 202    d = mt->layout_3d ? pt->depth0 : 1;
 203
 204    for (l = 0; l <= pt->last_level; ++l) {
 205       struct nv50_miptree_level *lvl = &mt->level[l];
 206       unsigned tsx, tsy, tsz;
 207       unsigned nbx = util_format_get_nblocksx(pt->format, w);
 208       unsigned nby = util_format_get_nblocksy(pt->format, h);
 209
 210       lvl->offset = mt->total_size;
 211
 212       lvl->tile_mode = nvc0_tex_choose_tile_dims(nbx, nby, d);
 213
 214       tsx = NVC0_TILE_SIZE_X(lvl->tile_mode); /* x is tile row pitch in bytes */
 215       tsy = NVC0_TILE_SIZE_Y(lvl->tile_mode);
 216       tsz = NVC0_TILE_SIZE_Z(lvl->tile_mode);
 217
 218       lvl->pitch = align(nbx * blocksize, tsx);
 219
 220       mt->total_size += lvl->pitch * align(nby, tsy) * align(d, tsz);
 221
 222       w = u_minify(w, 1);
 223       h = u_minify(h, 1);
 224       d = u_minify(d, 1);
 225    }
 226
 227    if (pt->array_size > 1) {
 228       mt->layer_stride = align(mt->total_size,
 229                                NVC0_TILE_SIZE(mt->level[0].tile_mode));
 230       mt->total_size = mt->layer_stride * pt->array_size;
 231    }
 232 }
 233
 234 const struct u_resource_vtbl nvc0_miptree_vtbl =
 235 {
 236    nv50_miptree_get_handle,         /* get_handle */
 237    nv50_miptree_destroy,            /* resource_destroy */
 238    nvc0_miptree_transfer_new,       /* get_transfer */
 239    nvc0_miptree_transfer_del,       /* transfer_destroy */
 240    nvc0_miptree_transfer_map,       /* transfer_map */
 241    u_default_transfer_flush_region, /* transfer_flush_region */
 242    nvc0_miptree_transfer_unmap,     /* transfer_unmap */
 243    u_default_transfer_inline_write  /* transfer_inline_write */
 244 };
 245
 246 struct pipe_resource *
 247 nvc0_miptree_create(struct pipe_screen *pscreen,
 248                     const struct pipe_resource *templ)
 249 {
 250    struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 251    struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
 252    struct pipe_resource *pt = &mt->base.base;
 253    int ret;
 254    uint32_t tile_flags;
 255
 256    if (!mt)
 257       return NULL;
 258
 259    mt->base.vtbl = &nvc0_miptree_vtbl;
 260    *pt = *templ;
 261    pipe_reference_init(&pt->reference, 1);
 262    pt->screen = pscreen;
 263
 264    tile_flags = nvc0_mt_choose_storage_type(mt, TRUE);
 265
 266    if (!nvc0_miptree_init_ms_mode(mt)) {
 267       FREE(mt);
 268       return NULL;
 269    }
 270
 271    if (tile_flags & NOUVEAU_BO_TILE_LAYOUT_MASK) {
 272       nvc0_miptree_init_layout_tiled(mt);
 273    } else
 274    if (!nv50_miptree_init_layout_linear(mt)) {
 275       FREE(mt);
 276       return NULL;
 277    }
 278
 279    ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 4096,
 280                              mt->total_size,
 281                              mt->level[0].tile_mode, tile_flags,
 282                              &mt->base.bo);
 283    if (ret) {
 284       FREE(mt);
 285       return NULL;
 286    }
 287    mt->base.domain = NOUVEAU_BO_VRAM;
 288
 289    return pt;
 290 }
 291
 292 /* Offset of zslice @z from start of level @l. */
 293 INLINE unsigned
 294 nvc0_mt_zslice_offset(const struct nv50_miptree *mt, unsigned l, unsigned z)
 295 {
 296    const struct pipe_resource *pt = &mt->base.base;
 297
 298    unsigned tds = NVC0_TILE_SHIFT_Z(mt->level[l].tile_mode);
 299    unsigned ths = NVC0_TILE_SHIFT_Y(mt->level[l].tile_mode);
 300
 301    unsigned nby = util_format_get_nblocksy(pt->format,
 302                                            u_minify(pt->height0, l));
 303
 304    /* to next 2D tile slice within a 3D tile */
 305    unsigned stride_2d = NVC0_TILE_SIZE_2D(mt->level[l].tile_mode);
 306
 307    /* to slice in the next (in z direction) 3D tile */
 308    unsigned stride_3d = (align(nby, (1 << ths)) * mt->level[l].pitch) << tds;
 309
 310    return (z & (1 << (tds - 1))) * stride_2d + (z >> tds) * stride_3d;
 311 }
 312
 313 /* Surface functions.
 314  */
 315
 316 struct pipe_surface *
 317 nvc0_miptree_surface_new(struct pipe_context *pipe,
 318                          struct pipe_resource *pt,
 319                          const struct pipe_surface *templ)
 320 {
 321    struct nv50_surface *ns = nv50_surface_from_miptree(nv50_miptree(pt), templ);
 322    if (!ns)
 323       return NULL;
 324    ns->base.context = pipe;
 325    return &ns->base;
 326 }