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 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         *pt = *tmp;
 141         pipe_reference_init(&pt->reference, 1);
 142         pt->screen = pscreen;
 143
 144         switch (pt->format) {
 145         case PIPE_FORMAT_Z32_FLOAT:
 146                 tile_flags = 0x4800;
 147                 break;
 148         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 149                 tile_flags = 0x1800;
 150                 break;
 151         case PIPE_FORMAT_Z16_UNORM:
 152                 tile_flags = 0x6c00;
 153                 break;
 154         case PIPE_FORMAT_Z24X8_UNORM:
 155         case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 156                 tile_flags = 0x2800;
 157                 break;
 158         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 159         case PIPE_FORMAT_R32G32B32_FLOAT:
 160                 tile_flags = 0x7400;
 161                 break;
 162         default:
 163                 if ((pt->bind & PIPE_BIND_SCANOUT) &&
 164                     util_format_get_blocksizebits(pt->format) == 32)
 165                         tile_flags = 0x7a00;
 166                 else
 167                         tile_flags = 0x7000;
 168                 break;
 169         }
 170
 171         /* XXX: texture arrays */
 172         mt->image_nr = (pt->target == PIPE_TEXTURE_CUBE) ? 6 : 1;
 173
 174         for (l = 0; l <= pt->last_level; l++) {
 175                 struct nv50_miptree_level *lvl = &mt->level[l];
 176                 unsigned nblocksy = util_format_get_nblocksy(pt->format, height);
 177
 178                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
 179                 lvl->pitch = align(util_format_get_stride(pt->format, width), 64);
 180                 lvl->tile_mode = get_tile_mode(nblocksy, depth);
 181
 182                 width = u_minify(width, 1);
 183                 height = u_minify(height, 1);
 184                 depth = u_minify(depth, 1);
 185         }
 186
 187         image_alignment  = get_tile_height(mt->level[0].tile_mode) * 64;
 188         image_alignment *= get_tile_depth(mt->level[0].tile_mode);
 189
 190         /* NOTE the distinction between arrays of mip-mapped 2D textures and
 191          * mip-mapped 3D textures. We can't use image_nr == depth for 3D mip.
 192          */
 193         for (i = 0; i < mt->image_nr; i++) {
 194                 for (l = 0; l <= pt->last_level; l++) {
 195                         struct nv50_miptree_level *lvl = &mt->level[l];
 196                         int size;
 197                         unsigned tile_h = get_tile_height(lvl->tile_mode);
 198                         unsigned tile_d = get_tile_depth(lvl->tile_mode);
 199
 200                         size  = lvl->pitch;
 201                         size *= align(util_format_get_nblocksy(pt->format, u_minify(pt->height0, l)), tile_h);
 202                         size *= align(u_minify(pt->depth0, l), tile_d);
 203
 204                         lvl->image_offset[i] = mt->total_size;
 205
 206                         mt->total_size += size;
 207                 }
 208                 mt->total_size = align(mt->total_size, image_alignment);
 209         }
 210
 211         ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size,
 212                                   mt->level[0].tile_mode, tile_flags,
 213                                   &mt->base.bo);
 214         if (ret) {
 215                 for (l = 0; l <= pt->last_level; ++l)
 216                         FREE(mt->level[l].image_offset);
 217                 FREE(mt);
 218                 return NULL;
 219         }
 220
 221         return pt;
 222 }
 223
 224
 225 struct pipe_resource *
 226 nv50_miptree_from_handle(struct pipe_screen *pscreen,
 227                          const struct pipe_resource *template,
 228                          struct winsys_handle *whandle)
 229 {
 230         struct nv50_miptree *mt;
 231         unsigned stride;
 232
 233         /* Only supports 2D, non-mipmapped textures for the moment */
 234         if (template->target != PIPE_TEXTURE_2D ||
 235             template->last_level != 0 ||
 236             template->depth0 != 1)
 237                 return NULL;
 238
 239         mt = CALLOC_STRUCT(nv50_miptree);
 240         if (!mt)
 241                 return NULL;
 242
 243         mt->base.bo = nouveau_screen_bo_from_handle(pscreen, whandle, &stride);
 244         if (mt->base.bo == NULL) {
 245                 FREE(mt);
 246                 return NULL;
 247         }
 248
 249
 250         mt->base.base = *template;
 251         pipe_reference_init(&mt->base.base.reference, 1);
 252         mt->base.base.screen = pscreen;
 253         mt->image_nr = 1;
 254         mt->level[0].pitch = stride;
 255         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 256         mt->level[0].tile_mode = mt->base.bo->tile_mode;
 257
 258         /* XXX: Need to adjust bo refcount??
 259          */
 260         /* nouveau_bo_ref(bo, &mt->base.bo); */
 261         return &mt->base.base;
 262 }
 263
 264
 265
 266 /* Surface functions
 267  */
 268
 269 struct pipe_surface *
 270 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_resource *pt,
 271                          unsigned face, unsigned level, unsigned zslice,
 272                          unsigned flags)
 273 {
 274         struct nv50_miptree *mt = nv50_miptree(pt);
 275         struct nv50_miptree_level *lvl = &mt->level[level];
 276         struct pipe_surface *ps;
 277         unsigned img = 0;
 278
 279         if (pt->target == PIPE_TEXTURE_CUBE)
 280                 img = face;
 281
 282         ps = CALLOC_STRUCT(pipe_surface);
 283         if (!ps)
 284                 return NULL;
 285         pipe_resource_reference(&ps->texture, pt);
 286         ps->format = pt->format;
 287         ps->width = u_minify(pt->width0, level);
 288         ps->height = u_minify(pt->height0, level);
 289         ps->usage = flags;
 290         pipe_reference_init(&ps->reference, 1);
 291         ps->face = face;
 292         ps->level = level;
 293         ps->zslice = zslice;
 294         ps->offset = lvl->image_offset[img];
 295
 296         if (pt->target == PIPE_TEXTURE_3D) {
 297                 unsigned nb_h = util_format_get_nblocksy(pt->format, ps->height);
 298                 ps->offset += get_zslice_offset(lvl->tile_mode, zslice,
 299                                                 lvl->pitch, nb_h);
 300         }
 301
 302         return ps;
 303 }
 304
 305 void
 306 nv50_miptree_surface_del(struct pipe_surface *ps)
 307 {
 308         struct nv50_surface *s = nv50_surface(ps);
 309
 310         pipe_resource_reference(&ps->texture, NULL);
 311         FREE(s);
 312 }