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 static struct pipe_texture *
  30 nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *tmp)
  31 {
  32         struct nouveau_device *dev = nouveau_screen(pscreen)->device;
  33         struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
  34         struct pipe_texture *pt = &mt->base;
  35         unsigned width = tmp->width[0], height = tmp->height[0];
  36         unsigned depth = tmp->depth[0];
  37         uint32_t tile_mode, tile_flags, tile_h;
  38         int ret, i, l;
  39
  40         mt->base = *tmp;
  41         pipe_reference_init(&mt->base.reference, 1);
  42         mt->base.screen = pscreen;
  43
  44         switch (pt->format) {
  45         case PIPE_FORMAT_Z24X8_UNORM:
  46         case PIPE_FORMAT_Z24S8_UNORM:
  47         case PIPE_FORMAT_Z16_UNORM:
  48                 tile_flags = 0x2800;
  49                 break;
  50         default:
  51                 tile_flags = 0x7000;
  52                 break;
  53         }
  54
  55         if      (pt->height[0] > 32) tile_mode = 4;
  56         else if (pt->height[0] > 16) tile_mode = 3;
  57         else if (pt->height[0] >  8) tile_mode = 2;
  58         else if (pt->height[0] >  4) tile_mode = 1;
  59         else                         tile_mode = 0;
  60         tile_h = 1 << (tile_mode + 2);
  61
  62         switch (pt->target) {
  63         case PIPE_TEXTURE_3D:
  64                 mt->image_nr = pt->depth[0];
  65                 break;
  66         case PIPE_TEXTURE_CUBE:
  67                 mt->image_nr = 6;
  68                 break;
  69         default:
  70                 mt->image_nr = 1;
  71                 break;
  72         }
  73
  74         for (l = 0; l <= pt->last_level; l++) {
  75                 struct nv50_miptree_level *lvl = &mt->level[l];
  76
  77                 pt->width[l] = width;
  78                 pt->height[l] = height;
  79                 pt->depth[l] = depth;
  80                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  81                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  82
  83                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
  84                 lvl->pitch = align(pt->width[l] * pt->block.size, 64);
  85
  86                 width = MAX2(1, width >> 1);
  87                 height = MAX2(1, height >> 1);
  88                 depth = MAX2(1, depth >> 1);
  89         }
  90
  91         for (i = 0; i < mt->image_nr; i++) {
  92                 for (l = 0; l <= pt->last_level; l++) {
  93                         struct nv50_miptree_level *lvl = &mt->level[l];
  94                         int size;
  95
  96                         size  = align(pt->width[l], 8) * pt->block.size;
  97                         size  = align(size, 64);
  98                         size *= align(pt->height[l], tile_h) * pt->block.size;
  99
 100                         lvl->image_offset[i] = mt->total_size;
 101
 102                         mt->total_size += size;
 103                 }
 104         }
 105
 106         ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size,
 107                                   tile_mode, tile_flags, &mt->bo);
 108         if (ret) {
 109                 FREE(mt);
 110                 return NULL;
 111         }
 112
 113         return &mt->base;
 114 }
 115
 116 static struct pipe_texture *
 117 nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 118                      const unsigned *stride, struct pipe_buffer *pb)
 119 {
 120         struct nouveau_bo *bo = nouveau_bo(pb);
 121         struct nv50_miptree *mt;
 122
 123         /* Only supports 2D, non-mipmapped textures for the moment */
 124         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 125             pt->depth[0] != 1)
 126                 return NULL;
 127
 128         mt = CALLOC_STRUCT(nv50_miptree);
 129         if (!mt)
 130                 return NULL;
 131
 132         mt->base = *pt;
 133         pipe_reference_init(&mt->base.reference, 1);
 134         mt->base.screen = pscreen;
 135         mt->image_nr = 1;
 136         mt->level[0].pitch = *stride;
 137         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 138
 139         nouveau_bo_ref(bo, &mt->bo);
 140         return &mt->base;
 141 }
 142
 143 static void
 144 nv50_miptree_destroy(struct pipe_texture *pt)
 145 {
 146         struct nv50_miptree *mt = nv50_miptree(pt);
 147
 148         nouveau_bo_ref(NULL, &mt->bo);
 149         FREE(mt);
 150 }
 151
 152 static struct pipe_surface *
 153 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 154                          unsigned face, unsigned level, unsigned zslice,
 155                          unsigned flags)
 156 {
 157         struct nv50_miptree *mt = nv50_miptree(pt);
 158         struct nv50_miptree_level *lvl = &mt->level[level];
 159         struct pipe_surface *ps;
 160         int img;
 161
 162         if (pt->target == PIPE_TEXTURE_CUBE)
 163                 img = face;
 164         else
 165         if (pt->target == PIPE_TEXTURE_3D)
 166                 img = zslice;
 167         else
 168                 img = 0;
 169
 170         ps = CALLOC_STRUCT(pipe_surface);
 171         if (!ps)
 172                 return NULL;
 173         pipe_texture_reference(&ps->texture, pt);
 174         ps->format = pt->format;
 175         ps->width = pt->width[level];
 176         ps->height = pt->height[level];
 177         ps->usage = flags;
 178         pipe_reference_init(&ps->reference, 1);
 179         ps->face = face;
 180         ps->level = level;
 181         ps->zslice = zslice;
 182         ps->offset = lvl->image_offset[img];
 183
 184         return ps;
 185 }
 186
 187 static void
 188 nv50_miptree_surface_del(struct pipe_surface *ps)
 189 {
 190         struct nv50_surface *s = nv50_surface(ps);
 191
 192         pipe_texture_reference(&ps->texture, NULL);
 193         FREE(s);
 194 }
 195
 196 void
 197 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 198 {
 199         pscreen->texture_create = nv50_miptree_create;
 200         pscreen->texture_blanket = nv50_miptree_blanket;
 201         pscreen->texture_destroy = nv50_miptree_destroy;
 202         pscreen->get_tex_surface = nv50_miptree_surface_new;
 203         pscreen->tex_surface_destroy = nv50_miptree_surface_del;
 204 }
 205