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
  30 /* The restrictions in tile mode selection probably aren't necessary. */
  31 static INLINE uint32_t
  32 get_tile_mode(unsigned ny, unsigned d)
  33 {
  34         uint32_t tile_mode = 0x00;
  35
  36         if (ny > 32) tile_mode = 0x04; /* height 64 tiles */
  37         else
  38         if (ny > 16) tile_mode = 0x03; /* height 32 tiles */
  39         else
  40         if (ny >  8) tile_mode = 0x02; /* height 16 tiles */
  41         else
  42         if (ny >  4) tile_mode = 0x01; /* height 8 tiles */
  43
  44         if (d == 1)
  45                 return tile_mode;
  46         else
  47         if (tile_mode > 0x02)
  48                 tile_mode = 0x02;
  49
  50         if (d > 16 && tile_mode < 0x02)
  51                 return tile_mode | 0x50; /* depth 32 tiles */
  52         if (d >  8) return tile_mode | 0x40; /* depth 16 tiles */
  53         if (d >  4) return tile_mode | 0x30; /* depth 8 tiles */
  54         if (d >  2) return tile_mode | 0x20; /* depth 4 tiles */
  55
  56         return tile_mode | 0x10;
  57 }
  58
  59 static INLINE unsigned
  60 get_zslice_offset(unsigned tile_mode, unsigned z, unsigned pitch, unsigned nb_h)
  61 {
  62         unsigned tile_h = get_tile_height(tile_mode);
  63         unsigned tile_d = get_tile_depth(tile_mode);
  64
  65         /* pitch_2d == to next slice within this volume-tile */
  66         /* pitch_3d == size (in bytes) of a volume-tile */
  67         unsigned pitch_2d = tile_h * 64;
  68         unsigned pitch_3d = tile_d * align(nb_h, tile_h) * pitch;
  69
  70         return (z % tile_d) * pitch_2d + (z / tile_d) * pitch_3d;
  71 }
  72
  73 static struct pipe_texture *
  74 nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *tmp)
  75 {
  76         struct nouveau_device *dev = nouveau_screen(pscreen)->device;
  77         struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
  78         struct pipe_texture *pt = &mt->base.base;
  79         unsigned width = tmp->width0, height = tmp->height0;
  80         unsigned depth = tmp->depth0, image_alignment;
  81         uint32_t tile_flags;
  82         int ret, i, l;
  83
  84         *pt = *tmp;
  85         pipe_reference_init(&pt->reference, 1);
  86         pt->screen = pscreen;
  87
  88         switch (pt->format) {
  89         case PIPE_FORMAT_Z32_FLOAT:
  90                 tile_flags = 0x4800;
  91                 break;
  92         case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
  93                 tile_flags = 0x1800;
  94                 break;
  95         case PIPE_FORMAT_Z16_UNORM:
  96                 tile_flags = 0x6c00;
  97                 break;
  98         case PIPE_FORMAT_Z24X8_UNORM:
  99         case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 100                 tile_flags = 0x2800;
 101                 break;
 102         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 103         case PIPE_FORMAT_R32G32B32_FLOAT:
 104                 tile_flags = 0x7400;
 105                 break;
 106         default:
 107                 if ((pt->tex_usage & PIPE_TEXTURE_USAGE_SCANOUT) &&
 108                     util_format_get_blocksizebits(pt->format) == 32)
 109                         tile_flags = 0x7a00;
 110                 else
 111                         tile_flags = 0x7000;
 112                 break;
 113         }
 114
 115         /* XXX: texture arrays */
 116         mt->image_nr = (pt->target == PIPE_TEXTURE_CUBE) ? 6 : 1;
 117
 118         for (l = 0; l <= pt->last_level; l++) {
 119                 struct nv50_miptree_level *lvl = &mt->level[l];
 120                 unsigned nblocksy = util_format_get_nblocksy(pt->format, height);
 121
 122                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
 123                 lvl->pitch = align(util_format_get_stride(pt->format, width), 64);
 124                 lvl->tile_mode = get_tile_mode(nblocksy, depth);
 125
 126                 width = u_minify(width, 1);
 127                 height = u_minify(height, 1);
 128                 depth = u_minify(depth, 1);
 129         }
 130
 131         image_alignment  = get_tile_height(mt->level[0].tile_mode) * 64;
 132         image_alignment *= get_tile_depth(mt->level[0].tile_mode);
 133
 134         /* NOTE the distinction between arrays of mip-mapped 2D textures and
 135          * mip-mapped 3D textures. We can't use image_nr == depth for 3D mip.
 136          */
 137         for (i = 0; i < mt->image_nr; i++) {
 138                 for (l = 0; l <= pt->last_level; l++) {
 139                         struct nv50_miptree_level *lvl = &mt->level[l];
 140                         int size;
 141                         unsigned tile_h = get_tile_height(lvl->tile_mode);
 142                         unsigned tile_d = get_tile_depth(lvl->tile_mode);
 143
 144                         size  = lvl->pitch;
 145                         size *= align(util_format_get_nblocksy(pt->format, u_minify(pt->height0, l)), tile_h);
 146                         size *= align(u_minify(pt->depth0, l), tile_d);
 147
 148                         lvl->image_offset[i] = mt->total_size;
 149
 150                         mt->total_size += size;
 151                 }
 152                 mt->total_size = align(mt->total_size, image_alignment);
 153         }
 154
 155         ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size,
 156                                   mt->level[0].tile_mode, tile_flags,
 157                                   &mt->base.bo);
 158         if (ret) {
 159                 for (l = 0; l <= pt->last_level; ++l)
 160                         FREE(mt->level[l].image_offset);
 161                 FREE(mt);
 162                 return NULL;
 163         }
 164
 165         return pt;
 166 }
 167
 168 static struct pipe_texture *
 169 nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 170                      const unsigned *stride, struct pipe_buffer *pb)
 171 {
 172         struct nouveau_bo *bo = nouveau_bo(pb);
 173         struct nv50_miptree *mt;
 174
 175         /* Only supports 2D, non-mipmapped textures for the moment */
 176         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 177             pt->depth0 != 1)
 178                 return NULL;
 179
 180         mt = CALLOC_STRUCT(nv50_miptree);
 181         if (!mt)
 182                 return NULL;
 183
 184         mt->base.base = *pt;
 185         pipe_reference_init(&mt->base.base.reference, 1);
 186         mt->base.base.screen = pscreen;
 187         mt->image_nr = 1;
 188         mt->level[0].pitch = *stride;
 189         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 190         mt->level[0].tile_mode = bo->tile_mode;
 191
 192         nouveau_bo_ref(bo, &mt->base.bo);
 193         return &mt->base.base;
 194 }
 195
 196 static void
 197 nv50_miptree_destroy(struct pipe_texture *pt)
 198 {
 199         struct nv50_miptree *mt = nv50_miptree(pt);
 200         unsigned l;
 201
 202         for (l = 0; l <= pt->last_level; ++l)
 203                 FREE(mt->level[l].image_offset);
 204
 205         nouveau_bo_ref(NULL, &mt->base.bo);
 206         FREE(mt);
 207 }
 208
 209 static struct pipe_surface *
 210 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 211                          unsigned face, unsigned level, unsigned zslice,
 212                          unsigned flags)
 213 {
 214         struct nv50_miptree *mt = nv50_miptree(pt);
 215         struct nv50_miptree_level *lvl = &mt->level[level];
 216         struct pipe_surface *ps;
 217         unsigned img = 0;
 218
 219         if (pt->target == PIPE_TEXTURE_CUBE)
 220                 img = face;
 221
 222         ps = CALLOC_STRUCT(pipe_surface);
 223         if (!ps)
 224                 return NULL;
 225         pipe_texture_reference(&ps->texture, pt);
 226         ps->format = pt->format;
 227         ps->width = u_minify(pt->width0, level);
 228         ps->height = u_minify(pt->height0, level);
 229         ps->usage = flags;
 230         pipe_reference_init(&ps->reference, 1);
 231         ps->face = face;
 232         ps->level = level;
 233         ps->zslice = zslice;
 234         ps->offset = lvl->image_offset[img];
 235
 236         if (pt->target == PIPE_TEXTURE_3D) {
 237                 unsigned nb_h = util_format_get_nblocksy(pt->format, ps->height);
 238                 ps->offset += get_zslice_offset(lvl->tile_mode, zslice,
 239                                                 lvl->pitch, nb_h);
 240         }
 241
 242         return ps;
 243 }
 244
 245 static void
 246 nv50_miptree_surface_del(struct pipe_surface *ps)
 247 {
 248         struct nv50_surface *s = nv50_surface(ps);
 249
 250         pipe_texture_reference(&ps->texture, NULL);
 251         FREE(s);
 252 }
 253
 254 void
 255 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 256 {
 257         pscreen->texture_create = nv50_miptree_create;
 258         pscreen->texture_destroy = nv50_miptree_destroy;
 259         pscreen->get_tex_surface = nv50_miptree_surface_new;
 260         pscreen->tex_surface_destroy = nv50_miptree_surface_del;
 261
 262         nouveau_screen(pscreen)->texture_blanket = nv50_miptree_blanket;
 263 }
 264