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 #include "nv50_transfer.h"
  31
  32 /* The restrictions in tile mode selection probably aren't necessary. */
  33 static INLINE uint32_t
  34 get_tile_mode(unsigned ny, unsigned d)
  35 {
  36         uint32_t tile_mode = 0x00;
  37
  38         if (ny > 32) tile_mode = 0x04; /* height 64 tiles */
  39         else
  40         if (ny > 16) tile_mode = 0x03; /* height 32 tiles */
  41         else
  42         if (ny >  8) tile_mode = 0x02; /* height 16 tiles */
  43         else
  44         if (ny >  4) tile_mode = 0x01; /* height 8 tiles */
  45
  46         if (d == 1)
  47                 return tile_mode;
  48         else
  49         if (tile_mode > 0x02)
  50                 tile_mode = 0x02;
  51
  52         if (d > 16 && tile_mode < 0x02)
  53                 return tile_mode | 0x50; /* depth 32 tiles */
  54         if (d >  8) return tile_mode | 0x40; /* depth 16 tiles */
  55         if (d >  4) return tile_mode | 0x30; /* depth 8 tiles */
  56         if (d >  2) return tile_mode | 0x20; /* depth 4 tiles */
  57
  58         return tile_mode | 0x10;
  59 }
  60
  61 static INLINE unsigned
  62 get_zslice_offset(unsigned tile_mode, unsigned z, unsigned pitch, unsigned nb_h)
  63 {
  64         unsigned tile_h = get_tile_height(tile_mode);
  65         unsigned tile_d = get_tile_depth(tile_mode);
  66
  67         /* pitch_2d == to next slice within this volume-tile */
  68         /* pitch_3d == size (in bytes) of a volume-tile */
  69         unsigned pitch_2d = tile_h * 64;
  70         unsigned pitch_3d = tile_d * align(nb_h, tile_h) * pitch;
  71
  72         return (z % tile_d) * pitch_2d + (z / tile_d) * pitch_3d;
  73 }
  74
  75
  76
  77
  78 static void
  79 nv50_miptree_destroy(struct pipe_screen *pscreen,
  80                      struct pipe_resource *pt)
  81 {
  82         struct nv50_miptree *mt = nv50_miptree(pt);
  83         unsigned l;
  84
  85         for (l = 0; l <= pt->last_level; ++l)
  86                 FREE(mt->level[l].image_offset);
  87
  88         nouveau_screen_bo_release(pscreen, mt->base.bo);
  89         FREE(mt);
  90 }
  91
  92 static boolean
  93 nv50_miptree_get_handle(struct pipe_screen *pscreen,
  94                         struct pipe_resource *pt,
  95                         struct winsys_handle *whandle)
  96 {
  97         struct nv50_miptree *mt = nv50_miptree(pt);
  98         unsigned stride;
  99
 100
 101         if (!mt || !mt->base.bo)
 102                 return FALSE;
 103
 104         stride = util_format_get_stride(mt->base.base.format,
 105                                         mt->base.base.width0);
 106
 107         return nouveau_screen_bo_get_handle(pscreen,
 108                                             mt->base.bo,
 109                                             stride,
 110                                             whandle);
 111 }
 112
 113
 114 const struct u_resource_vtbl nv50_miptree_vtbl =
 115 {
 116    nv50_miptree_get_handle,           /* get_handle */
 117    nv50_miptree_destroy,              /* resource_destroy */
 118    NULL,                              /* is_resource_referenced */
 119    nv50_miptree_transfer_new,         /* get_transfer */
 120    nv50_miptree_transfer_del,     /* transfer_destroy */
 121    nv50_miptree_transfer_map,         /* transfer_map */
 122    u_default_transfer_flush_region,   /* transfer_flush_region */
 123    nv50_miptree_transfer_unmap,       /* transfer_unmap */
 124    u_default_transfer_inline_write    /* transfer_inline_write */
 125 };
 126
 127
 128
 129 struct pipe_resource *
 130 nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_resource *tmp)
 131 {
 132         struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 133         struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
 134         struct pipe_resource *pt = &mt->base.base;
 135         unsigned width = tmp->width0, height = tmp->height0;
 136         unsigned depth = tmp->depth0, image_alignment;
 137         uint32_t tile_flags;
 138         int ret, i, l;
 139
 140         if (!mt)
 141                 return NULL;
 142
 143         *pt = *tmp;
 144         mt->base.vtbl = &nv50_miptree_vtbl;
 145         pipe_reference_init(&pt->reference, 1);
 146         pt->screen = pscreen;
 147
 148         switch (pt->format) {
 149         case PIPE_FORMAT_Z32_FLOAT:
 150                 tile_flags = 0x4800;
 151                 break;
 152         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 153                 tile_flags = 0x1800;
 154                 break;
 155         case PIPE_FORMAT_Z16_UNORM:
 156                 tile_flags = 0x6c00;
 157                 break;
 158         case PIPE_FORMAT_Z24X8_UNORM:
 159         case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 160                 tile_flags = 0x2800;
 161                 break;
 162         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 163         case PIPE_FORMAT_R32G32B32_FLOAT:
 164                 tile_flags = 0x7400;
 165                 break;
 166         default:
 167                 if ((pt->bind & PIPE_BIND_SCANOUT) &&
 168                     util_format_get_blocksizebits(pt->format) == 32)
 169                         tile_flags = 0x7a00;
 170                 else
 171                         tile_flags = 0x7000;
 172                 break;
 173         }
 174
 175         /* XXX: texture arrays */
 176         mt->image_nr = (pt->target == PIPE_TEXTURE_CUBE) ? 6 : 1;
 177
 178         for (l = 0; l <= pt->last_level; l++) {
 179                 struct nv50_miptree_level *lvl = &mt->level[l];
 180                 unsigned nblocksy = util_format_get_nblocksy(pt->format, height);
 181
 182                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
 183                 lvl->pitch = align(util_format_get_stride(pt->format, width), 64);
 184                 lvl->tile_mode = get_tile_mode(nblocksy, depth);
 185
 186                 width = u_minify(width, 1);
 187                 height = u_minify(height, 1);
 188                 depth = u_minify(depth, 1);
 189         }
 190
 191         image_alignment  = get_tile_height(mt->level[0].tile_mode) * 64;
 192         image_alignment *= get_tile_depth(mt->level[0].tile_mode);
 193
 194         /* NOTE the distinction between arrays of mip-mapped 2D textures and
 195          * mip-mapped 3D textures. We can't use image_nr == depth for 3D mip.
 196          */
 197         for (i = 0; i < mt->image_nr; i++) {
 198                 for (l = 0; l <= pt->last_level; l++) {
 199                         struct nv50_miptree_level *lvl = &mt->level[l];
 200                         int size;
 201                         unsigned tile_h = get_tile_height(lvl->tile_mode);
 202                         unsigned tile_d = get_tile_depth(lvl->tile_mode);
 203
 204                         size  = lvl->pitch;
 205                         size *= align(util_format_get_nblocksy(pt->format, u_minify(pt->height0, l)), tile_h);
 206                         size *= align(u_minify(pt->depth0, l), tile_d);
 207
 208                         lvl->image_offset[i] = mt->total_size;
 209
 210                         mt->total_size += size;
 211                 }
 212                 mt->total_size = align(mt->total_size, image_alignment);
 213         }
 214
 215         ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size,
 216                                   mt->level[0].tile_mode, tile_flags,
 217                                   &mt->base.bo);
 218         if (ret) {
 219                 for (l = 0; l <= pt->last_level; ++l)
 220                         FREE(mt->level[l].image_offset);
 221                 FREE(mt);
 222                 return NULL;
 223         }
 224
 225         return pt;
 226 }
 227
 228
 229 struct pipe_resource *
 230 nv50_miptree_from_handle(struct pipe_screen *pscreen,
 231                          const struct pipe_resource *template,
 232                          struct winsys_handle *whandle)
 233 {
 234         struct nv50_miptree *mt;
 235         unsigned stride;
 236
 237         /* Only supports 2D, non-mipmapped textures for the moment */
 238         if ((template->target != PIPE_TEXTURE_2D &&
 239               template->target != PIPE_TEXTURE_RECT) ||
 240             template->last_level != 0 ||
 241             template->depth0 != 1)
 242                 return NULL;
 243
 244         mt = CALLOC_STRUCT(nv50_miptree);
 245         if (!mt)
 246                 return NULL;
 247
 248         mt->base.bo = nouveau_screen_bo_from_handle(pscreen, whandle, &stride);
 249         if (mt->base.bo == NULL) {
 250                 FREE(mt);
 251                 return NULL;
 252         }
 253
 254
 255         mt->base.base = *template;
 256         mt->base.vtbl = &nv50_miptree_vtbl;
 257         pipe_reference_init(&mt->base.base.reference, 1);
 258         mt->base.base.screen = pscreen;
 259         mt->image_nr = 1;
 260         mt->level[0].pitch = stride;
 261         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 262         mt->level[0].tile_mode = mt->base.bo->tile_mode;
 263
 264         /* XXX: Need to adjust bo refcount??
 265          */
 266         /* nouveau_bo_ref(bo, &mt->base.bo); */
 267         return &mt->base.base;
 268 }
 269
 270
 271
 272 /* Surface functions
 273  */
 274
 275 struct pipe_surface *
 276 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_resource *pt,
 277                          unsigned face, unsigned level, unsigned zslice,
 278                          unsigned flags)
 279 {
 280         struct nv50_miptree *mt = nv50_miptree(pt);
 281         struct nv50_miptree_level *lvl = &mt->level[level];
 282         struct pipe_surface *ps;
 283         unsigned img = 0;
 284
 285         if (pt->target == PIPE_TEXTURE_CUBE)
 286                 img = face;
 287
 288         ps = CALLOC_STRUCT(pipe_surface);
 289         if (!ps)
 290                 return NULL;
 291         pipe_resource_reference(&ps->texture, pt);
 292         ps->format = pt->format;
 293         ps->width = u_minify(pt->width0, level);
 294         ps->height = u_minify(pt->height0, level);
 295         ps->usage = flags;
 296         pipe_reference_init(&ps->reference, 1);
 297         ps->face = face;
 298         ps->level = level;
 299         ps->zslice = zslice;
 300         ps->offset = lvl->image_offset[img];
 301
 302         if (pt->target == PIPE_TEXTURE_3D) {
 303                 unsigned nb_h = util_format_get_nblocksy(pt->format, ps->height);
 304                 ps->offset += get_zslice_offset(lvl->tile_mode, zslice,
 305                                                 lvl->pitch, nb_h);
 306         }
 307
 308         return ps;
 309 }
 310
 311 void
 312 nv50_miptree_surface_del(struct pipe_surface *ps)
 313 {
 314         struct nv50_surface *s = nv50_surface(ps);
 315
 316         pipe_resource_reference(&ps->texture, NULL);
 317         FREE(s);
 318 }