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.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         *pt = *tmp;
  41         pipe_reference_init(&pt->reference, 1);
  42         pt->screen = pscreen;
  43
  44         switch (pt->format) {
  45         case PIPE_FORMAT_Z32_FLOAT:
  46                 tile_flags = 0x4800;
  47                 break;
  48         case PIPE_FORMAT_Z24S8_UNORM:
  49                 tile_flags = 0x1800;
  50                 break;
  51         case PIPE_FORMAT_X8Z24_UNORM:
  52         case PIPE_FORMAT_S8Z24_UNORM:
  53                 tile_flags = 0x2800;
  54                 break;
  55         default:
  56                 tile_flags = 0x7000;
  57                 break;
  58         }
  59
  60         if      (pt->height[0] > 32) tile_mode = 4;
  61         else if (pt->height[0] > 16) tile_mode = 3;
  62         else if (pt->height[0] >  8) tile_mode = 2;
  63         else if (pt->height[0] >  4) tile_mode = 1;
  64         else                         tile_mode = 0;
  65         tile_h = 1 << (tile_mode + 2);
  66
  67         switch (pt->target) {
  68         case PIPE_TEXTURE_3D:
  69                 mt->image_nr = pt->depth[0];
  70                 break;
  71         case PIPE_TEXTURE_CUBE:
  72                 mt->image_nr = 6;
  73                 break;
  74         default:
  75                 mt->image_nr = 1;
  76                 break;
  77         }
  78
  79         for (l = 0; l <= pt->last_level; l++) {
  80                 struct nv50_miptree_level *lvl = &mt->level[l];
  81
  82                 pt->width[l] = width;
  83                 pt->height[l] = height;
  84                 pt->depth[l] = depth;
  85                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  86                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  87
  88                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
  89                 lvl->pitch = align(pt->width[l] * pt->block.size, 64);
  90                 lvl->tile_mode = tile_mode;
  91
  92                 width = MAX2(1, width >> 1);
  93                 height = MAX2(1, height >> 1);
  94                 depth = MAX2(1, depth >> 1);
  95
  96                 if (tile_mode && height <= (tile_h >> 1)) {
  97                         tile_mode--;
  98                         tile_h >>= 1;
  99                 }
 100         }
 101
 102         for (i = 0; i < mt->image_nr; i++) {
 103                 for (l = 0; l <= pt->last_level; l++) {
 104                         struct nv50_miptree_level *lvl = &mt->level[l];
 105                         int size;
 106                         tile_h = 1 << (lvl->tile_mode + 2);
 107
 108                         size  = align(pt->width[l], 8) * pt->block.size;
 109                         size  = align(size, 64);
 110                         size *= align(pt->height[l], tile_h);
 111
 112                         lvl->image_offset[i] = mt->total_size;
 113
 114                         mt->total_size += size;
 115                 }
 116         }
 117
 118         ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size,
 119                                   mt->level[0].tile_mode, tile_flags,
 120                                   &mt->base.bo);
 121         if (ret) {
 122                 FREE(mt);
 123                 return NULL;
 124         }
 125
 126         return pt;
 127 }
 128
 129 static struct pipe_texture *
 130 nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 131                      const unsigned *stride, struct pipe_buffer *pb)
 132 {
 133         struct nouveau_bo *bo = nouveau_bo(pb);
 134         struct nv50_miptree *mt;
 135
 136         /* Only supports 2D, non-mipmapped textures for the moment */
 137         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 138             pt->depth[0] != 1)
 139                 return NULL;
 140
 141         mt = CALLOC_STRUCT(nv50_miptree);
 142         if (!mt)
 143                 return NULL;
 144
 145         mt->base.base = *pt;
 146         pipe_reference_init(&mt->base.base.reference, 1);
 147         mt->base.base.screen = pscreen;
 148         mt->image_nr = 1;
 149         mt->level[0].pitch = *stride;
 150         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 151         mt->level[0].tile_mode = bo->tile_mode;
 152
 153         nouveau_bo_ref(bo, &mt->base.bo);
 154         return &mt->base.base;
 155 }
 156
 157 static void
 158 nv50_miptree_destroy(struct pipe_texture *pt)
 159 {
 160         struct nv50_miptree *mt = nv50_miptree(pt);
 161
 162         nouveau_bo_ref(NULL, &mt->base.bo);
 163         FREE(mt);
 164 }
 165
 166 static struct pipe_surface *
 167 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 168                          unsigned face, unsigned level, unsigned zslice,
 169                          unsigned flags)
 170 {
 171         struct nv50_miptree *mt = nv50_miptree(pt);
 172         struct nv50_miptree_level *lvl = &mt->level[level];
 173         struct pipe_surface *ps;
 174         int img;
 175
 176         if (pt->target == PIPE_TEXTURE_CUBE)
 177                 img = face;
 178         else
 179         if (pt->target == PIPE_TEXTURE_3D)
 180                 img = zslice;
 181         else
 182                 img = 0;
 183
 184         ps = CALLOC_STRUCT(pipe_surface);
 185         if (!ps)
 186                 return NULL;
 187         pipe_texture_reference(&ps->texture, pt);
 188         ps->format = pt->format;
 189         ps->width = pt->width[level];
 190         ps->height = pt->height[level];
 191         ps->usage = flags;
 192         pipe_reference_init(&ps->reference, 1);
 193         ps->face = face;
 194         ps->level = level;
 195         ps->zslice = zslice;
 196         ps->offset = lvl->image_offset[img];
 197
 198         return ps;
 199 }
 200
 201 static void
 202 nv50_miptree_surface_del(struct pipe_surface *ps)
 203 {
 204         struct nv50_surface *s = nv50_surface(ps);
 205
 206         pipe_texture_reference(&ps->texture, NULL);
 207         FREE(s);
 208 }
 209
 210 void
 211 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 212 {
 213         pscreen->texture_create = nv50_miptree_create;
 214         pscreen->texture_blanket = nv50_miptree_blanket;
 215         pscreen->texture_destroy = nv50_miptree_destroy;
 216         pscreen->get_tex_surface = nv50_miptree_surface_new;
 217         pscreen->tex_surface_destroy = nv50_miptree_surface_del;
 218 }
 219