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 "pipe/p_inlines.h"
  26
  27 #include "nv50_context.h"
  28
  29 /* The restrictions in tile mode selection probably aren't necessary. */
  30 static INLINE uint32_t
  31 get_tile_mode(unsigned ny, unsigned d)
  32 {
  33         uint32_t tile_mode = 0x00;
  34
  35         if (ny > 32) tile_mode = 0x04; /* height 64 tiles */
  36         else
  37         if (ny > 16) tile_mode = 0x03; /* height 32 tiles */
  38         else
  39         if (ny >  8) tile_mode = 0x02; /* height 16 tiles */
  40         else
  41         if (ny >  4) tile_mode = 0x01; /* height 8 tiles */
  42
  43         if (d == 1)
  44                 return tile_mode;
  45         else
  46         if (tile_mode > 0x02)
  47                 tile_mode = 0x02;
  48
  49         if (d > 16 && tile_mode < 0x02)
  50                 return tile_mode | 0x50; /* depth 32 tiles */
  51         if (d >  8) return tile_mode | 0x40; /* depth 16 tiles */
  52         if (d >  4) return tile_mode | 0x30; /* depth 8 tiles */
  53         if (d >  2) return tile_mode | 0x20; /* depth 4 tiles */
  54
  55         return tile_mode | 0x10;
  56 }
  57
  58 static struct pipe_texture *
  59 nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *tmp)
  60 {
  61         struct nouveau_device *dev = nouveau_screen(pscreen)->device;
  62         struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
  63         struct pipe_texture *pt = &mt->base.base;
  64         unsigned width = tmp->width0, height = tmp->height0;
  65         unsigned depth = tmp->depth0, image_alignment;
  66         uint32_t tile_flags;
  67         int ret, i, l;
  68
  69         *pt = *tmp;
  70         pipe_reference_init(&pt->reference, 1);
  71         pt->screen = pscreen;
  72
  73         switch (pt->format) {
  74         case PIPE_FORMAT_Z32_FLOAT:
  75                 tile_flags = 0x4800;
  76                 break;
  77         case PIPE_FORMAT_Z24S8_UNORM:
  78                 tile_flags = 0x1800;
  79                 break;
  80         case PIPE_FORMAT_X8Z24_UNORM:
  81         case PIPE_FORMAT_S8Z24_UNORM:
  82                 tile_flags = 0x2800;
  83                 break;
  84         default:
  85                 tile_flags = 0x7000;
  86                 break;
  87         }
  88
  89         /* XXX: texture arrays */
  90         mt->image_nr = (pt->target == PIPE_TEXTURE_CUBE) ? 6 : 1;
  91
  92         for (l = 0; l <= pt->last_level; l++) {
  93                 struct nv50_miptree_level *lvl = &mt->level[l];
  94                 unsigned nblocksy = pf_get_nblocksy(pt->format, height);
  95
  96                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
  97                 lvl->pitch = align(pf_get_stride(pt->format, width), 64);
  98                 lvl->tile_mode = get_tile_mode(nblocksy, depth);
  99
 100                 width = u_minify(width, 1);
 101                 height = u_minify(height, 1);
 102                 depth = u_minify(depth, 1);
 103         }
 104
 105         image_alignment  = get_tile_height(mt->level[0].tile_mode) * 64;
 106         image_alignment *= get_tile_depth(mt->level[0].tile_mode);
 107
 108         /* NOTE the distinction between arrays of mip-mapped 2D textures and
 109          * mip-mapped 3D textures. We can't use image_nr == depth for 3D mip.
 110          */
 111         for (i = 0; i < mt->image_nr; i++) {
 112                 for (l = 0; l <= pt->last_level; l++) {
 113                         struct nv50_miptree_level *lvl = &mt->level[l];
 114                         int size;
 115                         unsigned tile_h = get_tile_height(lvl->tile_mode);
 116                         unsigned tile_d = get_tile_depth(lvl->tile_mode);
 117
 118                         size  = lvl->pitch;
 119                         size *= align(pf_get_nblocksy(pt->format, u_minify(pt->height0, l)), tile_h);
 120                         size *= align(u_minify(pt->depth0, l), tile_d);
 121
 122                         lvl->image_offset[i] = mt->total_size;
 123
 124                         mt->total_size += size;
 125                 }
 126                 mt->total_size = align(mt->total_size, image_alignment);
 127         }
 128
 129         ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size,
 130                                   mt->level[0].tile_mode, tile_flags,
 131                                   &mt->base.bo);
 132         if (ret) {
 133                 for (l = 0; l < pt->last_level; ++l)
 134                         FREE(mt->level[l].image_offset);
 135                 FREE(mt);
 136                 return NULL;
 137         }
 138
 139         return pt;
 140 }
 141
 142 static struct pipe_texture *
 143 nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 144                      const unsigned *stride, struct pipe_buffer *pb)
 145 {
 146         struct nouveau_bo *bo = nouveau_bo(pb);
 147         struct nv50_miptree *mt;
 148
 149         /* Only supports 2D, non-mipmapped textures for the moment */
 150         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 151             pt->depth0 != 1)
 152                 return NULL;
 153
 154         mt = CALLOC_STRUCT(nv50_miptree);
 155         if (!mt)
 156                 return NULL;
 157
 158         mt->base.base = *pt;
 159         pipe_reference_init(&mt->base.base.reference, 1);
 160         mt->base.base.screen = pscreen;
 161         mt->image_nr = 1;
 162         mt->level[0].pitch = *stride;
 163         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 164         mt->level[0].tile_mode = bo->tile_mode;
 165
 166         nouveau_bo_ref(bo, &mt->base.bo);
 167         return &mt->base.base;
 168 }
 169
 170 static void
 171 nv50_miptree_destroy(struct pipe_texture *pt)
 172 {
 173         struct nv50_miptree *mt = nv50_miptree(pt);
 174         unsigned l;
 175
 176         for (l = 0; l < pt->last_level; ++l)
 177                 FREE(mt->level[l].image_offset);
 178
 179         nouveau_bo_ref(NULL, &mt->base.bo);
 180         FREE(mt);
 181 }
 182
 183 static struct pipe_surface *
 184 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 185                          unsigned face, unsigned level, unsigned zslice,
 186                          unsigned flags)
 187 {
 188         struct nv50_miptree *mt = nv50_miptree(pt);
 189         struct nv50_miptree_level *lvl = &mt->level[level];
 190         struct pipe_surface *ps;
 191         int img;
 192
 193         if (pt->target == PIPE_TEXTURE_CUBE)
 194                 img = face;
 195         else
 196         if (pt->target == PIPE_TEXTURE_3D)
 197                 img = zslice;
 198         else
 199                 img = 0;
 200
 201         ps = CALLOC_STRUCT(pipe_surface);
 202         if (!ps)
 203                 return NULL;
 204         pipe_texture_reference(&ps->texture, pt);
 205         ps->format = pt->format;
 206         ps->width = u_minify(pt->width0, level);
 207         ps->height = u_minify(pt->height0, level);
 208         ps->usage = flags;
 209         pipe_reference_init(&ps->reference, 1);
 210         ps->face = face;
 211         ps->level = level;
 212         ps->zslice = zslice;
 213         ps->offset = lvl->image_offset[img];
 214
 215         return ps;
 216 }
 217
 218 static void
 219 nv50_miptree_surface_del(struct pipe_surface *ps)
 220 {
 221         struct nv50_surface *s = nv50_surface(ps);
 222
 223         pipe_texture_reference(&ps->texture, NULL);
 224         FREE(s);
 225 }
 226
 227 void
 228 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 229 {
 230         pscreen->texture_create = nv50_miptree_create;
 231         pscreen->texture_blanket = nv50_miptree_blanket;
 232         pscreen->texture_destroy = nv50_miptree_destroy;
 233         pscreen->get_tex_surface = nv50_miptree_surface_new;
 234         pscreen->tex_surface_destroy = nv50_miptree_surface_del;
 235 }
 236