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->width[0], height = tmp->height[0];
  65         unsigned depth = tmp->depth[0], 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
  95                 pt->width[l] = width;
  96                 pt->height[l] = height;
  97                 pt->depth[l] = depth;
  98                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  99                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
 100
 101                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
 102                 lvl->pitch = align(pt->nblocksx[l] * pt->block.size, 64);
 103                 lvl->tile_mode = get_tile_mode(pt->nblocksy[l], depth);
 104
 105                 width = MAX2(1, width >> 1);
 106                 height = MAX2(1, height >> 1);
 107                 depth = MAX2(1, depth >> 1);
 108         }
 109
 110         image_alignment  = get_tile_height(mt->level[0].tile_mode) * 64;
 111         image_alignment *= get_tile_depth(mt->level[0].tile_mode);
 112
 113         /* NOTE the distinction between arrays of mip-mapped 2D textures and
 114          * mip-mapped 3D textures. We can't use image_nr == depth for 3D mip.
 115          */
 116         for (i = 0; i < mt->image_nr; i++) {
 117                 for (l = 0; l <= pt->last_level; l++) {
 118                         struct nv50_miptree_level *lvl = &mt->level[l];
 119                         int size;
 120                         unsigned tile_h = get_tile_height(lvl->tile_mode);
 121                         unsigned tile_d = get_tile_depth(lvl->tile_mode);
 122
 123                         size  = lvl->pitch;
 124                         size *= align(pt->nblocksy[l], tile_h);
 125                         size *= align(pt->depth[l], tile_d);
 126
 127                         lvl->image_offset[i] = mt->total_size;
 128
 129                         mt->total_size += size;
 130                 }
 131                 mt->total_size = align(mt->total_size, image_alignment);
 132         }
 133
 134         ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size,
 135                                   mt->level[0].tile_mode, tile_flags,
 136                                   &mt->base.bo);
 137         if (ret) {
 138                 FREE(mt);
 139                 return NULL;
 140         }
 141
 142         return pt;
 143 }
 144
 145 static struct pipe_texture *
 146 nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 147                      const unsigned *stride, struct pipe_buffer *pb)
 148 {
 149         struct nouveau_bo *bo = nouveau_bo(pb);
 150         struct nv50_miptree *mt;
 151
 152         /* Only supports 2D, non-mipmapped textures for the moment */
 153         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 154             pt->depth[0] != 1)
 155                 return NULL;
 156
 157         mt = CALLOC_STRUCT(nv50_miptree);
 158         if (!mt)
 159                 return NULL;
 160
 161         mt->base.base = *pt;
 162         pipe_reference_init(&mt->base.base.reference, 1);
 163         mt->base.base.screen = pscreen;
 164         mt->image_nr = 1;
 165         mt->level[0].pitch = *stride;
 166         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 167         mt->level[0].tile_mode = bo->tile_mode;
 168
 169         nouveau_bo_ref(bo, &mt->base.bo);
 170         return &mt->base.base;
 171 }
 172
 173 static void
 174 nv50_miptree_destroy(struct pipe_texture *pt)
 175 {
 176         struct nv50_miptree *mt = nv50_miptree(pt);
 177
 178         nouveau_bo_ref(NULL, &mt->base.bo);
 179         FREE(mt);
 180 }
 181
 182 static struct pipe_surface *
 183 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 184                          unsigned face, unsigned level, unsigned zslice,
 185                          unsigned flags)
 186 {
 187         struct nv50_miptree *mt = nv50_miptree(pt);
 188         struct nv50_miptree_level *lvl = &mt->level[level];
 189         struct pipe_surface *ps;
 190         int img;
 191
 192         if (pt->target == PIPE_TEXTURE_CUBE)
 193                 img = face;
 194         else
 195         if (pt->target == PIPE_TEXTURE_3D)
 196                 img = zslice;
 197         else
 198                 img = 0;
 199
 200         ps = CALLOC_STRUCT(pipe_surface);
 201         if (!ps)
 202                 return NULL;
 203         pipe_texture_reference(&ps->texture, pt);
 204         ps->format = pt->format;
 205         ps->width = pt->width[level];
 206         ps->height = pt->height[level];
 207         ps->usage = flags;
 208         pipe_reference_init(&ps->reference, 1);
 209         ps->face = face;
 210         ps->level = level;
 211         ps->zslice = zslice;
 212         ps->offset = lvl->image_offset[img];
 213
 214         return ps;
 215 }
 216
 217 static void
 218 nv50_miptree_surface_del(struct pipe_surface *ps)
 219 {
 220         struct nv50_surface *s = nv50_surface(ps);
 221
 222         pipe_texture_reference(&ps->texture, NULL);
 223         FREE(s);
 224 }
 225
 226 void
 227 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 228 {
 229         pscreen->texture_create = nv50_miptree_create;
 230         pscreen->texture_blanket = nv50_miptree_blanket;
 231         pscreen->texture_destroy = nv50_miptree_destroy;
 232         pscreen->get_tex_surface = nv50_miptree_surface_new;
 233         pscreen->tex_surface_destroy = nv50_miptree_surface_del;
 234 }
 235