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