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 = 0, tile_flags = 0;
  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_Z24S8_UNORM:
  46         case PIPE_FORMAT_Z16_UNORM:
  47                 tile_flags = 0x2800;
  48                 break;
  49         default:
  50                 tile_flags = 0x7000;
  51                 break;
  52         }
  53
  54         switch (pt->target) {
  55         case PIPE_TEXTURE_3D:
  56                 mt->image_nr = pt->depth[0];
  57                 break;
  58         case PIPE_TEXTURE_CUBE:
  59                 mt->image_nr = 6;
  60                 break;
  61         default:
  62                 mt->image_nr = 1;
  63                 break;
  64         }
  65
  66         for (l = 0; l <= pt->last_level; l++) {
  67                 struct nv50_miptree_level *lvl = &mt->level[l];
  68
  69                 pt->width[l] = width;
  70                 pt->height[l] = height;
  71                 pt->depth[l] = depth;
  72                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  73                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  74
  75                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
  76                 lvl->pitch = align(pt->width[l] * pt->block.size, 64);
  77
  78                 width = MAX2(1, width >> 1);
  79                 height = MAX2(1, height >> 1);
  80                 depth = MAX2(1, depth >> 1);
  81         }
  82
  83         for (i = 0; i < mt->image_nr; i++) {
  84                 for (l = 0; l <= pt->last_level; l++) {
  85                         struct nv50_miptree_level *lvl = &mt->level[l];
  86                         int size;
  87
  88                         size  = align(pt->width[l], 8) * pt->block.size;
  89                         size  = align(size, 64);
  90                         size *= align(pt->height[l], 8) * pt->block.size;
  91
  92                         lvl->image_offset[i] = mt->total_size;
  93
  94                         mt->total_size += size;
  95                 }
  96         }
  97
  98         ret = nouveau_bo_new_tile(dev, NOUVEAU_BO_VRAM, 256, mt->total_size,
  99                                   tile_mode, tile_flags, &mt->bo);
 100         if (ret) {
 101                 FREE(mt);
 102                 return NULL;
 103         }
 104
 105         return &mt->base;
 106 }
 107
 108 static struct pipe_texture *
 109 nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 110                      const unsigned *stride, struct pipe_buffer *pb)
 111 {
 112         struct nouveau_bo *bo = nouveau_bo(pb);
 113         struct nv50_miptree *mt;
 114
 115         /* Only supports 2D, non-mipmapped textures for the moment */
 116         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 117             pt->depth[0] != 1)
 118                 return NULL;
 119
 120         mt = CALLOC_STRUCT(nv50_miptree);
 121         if (!mt)
 122                 return NULL;
 123
 124         mt->base = *pt;
 125         pipe_reference_init(&mt->base.reference, 1);
 126         mt->base.screen = pscreen;
 127         mt->image_nr = 1;
 128         mt->level[0].pitch = *stride;
 129         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 130
 131         nouveau_bo_ref(bo, &mt->bo);
 132         return &mt->base;
 133 }
 134
 135 static void
 136 nv50_miptree_destroy(struct pipe_texture *pt)
 137 {
 138         struct nv50_miptree *mt = nv50_miptree(pt);
 139
 140         nouveau_bo_ref(NULL, &mt->bo);
 141         FREE(mt);
 142 }
 143
 144 static struct pipe_surface *
 145 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 146                          unsigned face, unsigned level, unsigned zslice,
 147                          unsigned flags)
 148 {
 149         struct nv50_miptree *mt = nv50_miptree(pt);
 150         struct nv50_miptree_level *lvl = &mt->level[level];
 151         struct pipe_surface *ps;
 152         int img;
 153
 154         if (pt->target == PIPE_TEXTURE_CUBE)
 155                 img = face;
 156         else
 157         if (pt->target == PIPE_TEXTURE_3D)
 158                 img = zslice;
 159         else
 160                 img = 0;
 161
 162         ps = CALLOC_STRUCT(pipe_surface);
 163         if (!ps)
 164                 return NULL;
 165         pipe_texture_reference(&ps->texture, pt);
 166         ps->format = pt->format;
 167         ps->width = pt->width[level];
 168         ps->height = pt->height[level];
 169         ps->usage = flags;
 170         pipe_reference_init(&ps->reference, 1);
 171         ps->face = face;
 172         ps->level = level;
 173         ps->zslice = zslice;
 174         ps->offset = lvl->image_offset[img];
 175
 176         return ps;
 177 }
 178
 179 static void
 180 nv50_miptree_surface_del(struct pipe_surface *ps)
 181 {
 182         struct nv50_surface *s = nv50_surface(ps);
 183
 184         pipe_texture_reference(&ps->texture, NULL);
 185         FREE(s);
 186 }
 187
 188 void
 189 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 190 {
 191         pscreen->texture_create = nv50_miptree_create;
 192         pscreen->texture_blanket = nv50_miptree_blanket;
 193         pscreen->texture_destroy = nv50_miptree_destroy;
 194         pscreen->get_tex_surface = nv50_miptree_surface_new;
 195         pscreen->tex_surface_destroy = nv50_miptree_surface_del;
 196 }
 197