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 pipe_winsys *ws = pscreen->winsys;
  33         struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
  34         struct pipe_texture *pt = &mt->base;
  35         unsigned usage, width = tmp->width[0], height = tmp->height[0];
  36         unsigned depth = tmp->depth[0];
  37         int i, l;
  38
  39         mt->base = *tmp;
  40         mt->base.refcount = 1;
  41         mt->base.screen = pscreen;
  42
  43         usage = PIPE_BUFFER_USAGE_PIXEL;
  44         switch (pt->format) {
  45         case PIPE_FORMAT_Z24S8_UNORM:
  46         case PIPE_FORMAT_Z16_UNORM:
  47                 usage |= NOUVEAU_BUFFER_USAGE_ZETA;
  48                 break;
  49         default:
  50                 break;
  51         }
  52
  53         switch (pt->target) {
  54         case PIPE_TEXTURE_3D:
  55                 mt->image_nr = pt->depth[0];
  56                 break;
  57         case PIPE_TEXTURE_CUBE:
  58                 mt->image_nr = 6;
  59                 break;
  60         default:
  61                 mt->image_nr = 1;
  62                 break;
  63         }
  64
  65         for (l = 0; l <= pt->last_level; l++) {
  66                 struct nv50_miptree_level *lvl = &mt->level[l];
  67
  68                 pt->width[l] = width;
  69                 pt->height[l] = height;
  70                 pt->depth[l] = depth;
  71                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  72                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  73
  74                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
  75                 lvl->pitch = align(pt->width[l] * pt->block.size, 64);
  76
  77                 width = MAX2(1, width >> 1);
  78                 height = MAX2(1, height >> 1);
  79                 depth = MAX2(1, depth >> 1);
  80         }
  81
  82         for (i = 0; i < mt->image_nr; i++) {
  83                 for (l = 0; l <= pt->last_level; l++) {
  84                         struct nv50_miptree_level *lvl = &mt->level[l];
  85                         int size;
  86
  87                         size  = align(pt->width[l], 8) * pt->block.size;
  88                         size  = align(size, 64);
  89                         size *= align(pt->height[l], 8) * pt->block.size;
  90
  91                         lvl->image_offset[i] = mt->total_size;
  92
  93                         mt->total_size += size;
  94                 }
  95         }
  96
  97         mt->buffer = ws->buffer_create(ws, 256, usage, mt->total_size);
  98         if (!mt->buffer) {
  99                 FREE(mt);
 100                 return NULL;
 101         }
 102
 103         return &mt->base;
 104 }
 105
 106 static struct pipe_texture *
 107 nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 108                      const unsigned *stride, struct pipe_buffer *pb)
 109 {
 110         struct nv50_miptree *mt;
 111
 112         /* Only supports 2D, non-mipmapped textures for the moment */
 113         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 114             pt->depth[0] != 1)
 115                 return NULL;
 116
 117         mt = CALLOC_STRUCT(nv50_miptree);
 118         if (!mt)
 119                 return NULL;
 120
 121         mt->base = *pt;
 122         mt->base.refcount = 1;
 123         mt->base.screen = pscreen;
 124         mt->image_nr = 1;
 125         mt->level[0].pitch = *stride;
 126         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 127
 128         pipe_buffer_reference(pscreen, &mt->buffer, pb);
 129         return &mt->base;
 130 }
 131
 132 static void
 133 nv50_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
 134 {
 135         struct pipe_texture *pt = *ppt;
 136
 137         *ppt = NULL;
 138
 139         if (--pt->refcount <= 0) {
 140                 struct nv50_miptree *mt = nv50_miptree(pt);
 141
 142                 pipe_buffer_reference(pscreen, &mt->buffer, NULL);
 143                 FREE(mt);
 144         }
 145 }
 146
 147 static struct pipe_surface *
 148 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 149                          unsigned face, unsigned level, unsigned zslice,
 150                          unsigned flags)
 151 {
 152         struct nv50_miptree *mt = nv50_miptree(pt);
 153         struct nv50_miptree_level *lvl = &mt->level[level];
 154         struct pipe_surface *ps;
 155         int img;
 156
 157         if (pt->target == PIPE_TEXTURE_CUBE)
 158                 img = face;
 159         else
 160         if (pt->target == PIPE_TEXTURE_3D)
 161                 img = zslice;
 162         else
 163                 img = 0;
 164
 165         ps = CALLOC_STRUCT(pipe_surface);
 166         if (!ps)
 167                 return NULL;
 168         pipe_texture_reference(&ps->texture, pt);
 169         ps->format = pt->format;
 170         ps->width = pt->width[level];
 171         ps->height = pt->height[level];
 172         ps->usage = flags;
 173         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 174         ps->refcount = 1;
 175         ps->face = face;
 176         ps->level = level;
 177         ps->zslice = zslice;
 178         ps->offset = lvl->image_offset[img];
 179
 180         return ps;
 181 }
 182
 183 static void
 184 nv50_miptree_surface_del(struct pipe_screen *pscreen,
 185                          struct pipe_surface **psurface)
 186 {
 187         struct pipe_surface *ps = *psurface;
 188         struct nv50_surface *s = nv50_surface(ps);
 189
 190         *psurface = NULL;
 191
 192         if (--ps->refcount <= 0) {
 193                 pipe_texture_reference(&ps->texture, NULL);
 194                 FREE(s);
 195         }
 196 }
 197
 198 void
 199 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 200 {
 201         pscreen->texture_create = nv50_miptree_create;
 202         pscreen->texture_blanket = nv50_miptree_blanket;
 203         pscreen->texture_release = nv50_miptree_release;
 204         pscreen->get_tex_surface = nv50_miptree_surface_new;
 205         pscreen->tex_surface_release = nv50_miptree_surface_del;
 206 }
 207