src/gallium/drivers/nv40/nv40_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "pipe/p_inlines.h"
   4
   5 #include "nv40_context.h"
   6
   7 static void
   8 nv40_miptree_layout(struct nv40_miptree *mt)
   9 {
  10         struct pipe_texture *pt = &mt->base;
  11         uint width = pt->width[0], height = pt->height[0], depth = pt->depth[0];
  12         uint offset = 0;
  13         int nr_faces, l, f, pitch;
  14
  15         if (pt->target == PIPE_TEXTURE_CUBE) {
  16                 nr_faces = 6;
  17         } else
  18         if (pt->target == PIPE_TEXTURE_3D) {
  19                 nr_faces = pt->depth[0];
  20         } else {
  21                 nr_faces = 1;
  22         }
  23
  24         pitch = pt->width[0];
  25         for (l = 0; l <= pt->last_level; l++) {
  26                 pt->width[l] = width;
  27                 pt->height[l] = height;
  28                 pt->depth[l] = depth;
  29                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  30                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  31
  32                 if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
  33                         pitch = pt->nblocksx[l];
  34                 pitch = align(pitch, 64);
  35
  36                 mt->level[l].pitch = pitch * pt->block.size;
  37                 mt->level[l].image_offset =
  38                         CALLOC(nr_faces, sizeof(unsigned));
  39
  40                 width  = MAX2(1, width  >> 1);
  41                 height = MAX2(1, height >> 1);
  42                 depth  = MAX2(1, depth  >> 1);
  43         }
  44
  45         for (f = 0; f < nr_faces; f++) {
  46                 for (l = 0; l <= pt->last_level; l++) {
  47                         mt->level[l].image_offset[f] = offset;
  48                         offset += mt->level[l].pitch * pt->height[l];
  49                 }
  50         }
  51
  52         mt->total_size = offset;
  53 }
  54
  55 static struct pipe_texture *
  56 nv40_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  57 {
  58         struct pipe_winsys *ws = pscreen->winsys;
  59         struct nv40_miptree *mt;
  60         unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
  61                              NOUVEAU_BUFFER_USAGE_TEXTURE;
  62
  63         mt = MALLOC(sizeof(struct nv40_miptree));
  64         if (!mt)
  65                 return NULL;
  66         mt->base = *pt;
  67         mt->base.refcount = 1;
  68         mt->base.screen = pscreen;
  69         mt->shadow_tex = NULL;
  70         mt->shadow_surface = NULL;
  71
  72         /* Swizzled textures must be POT */
  73         if (pt->width[0] & (pt->width[0] - 1) ||
  74             pt->height[0] & (pt->height[0] - 1))
  75                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  76         else
  77         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
  78                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET))
  79                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  80         else
  81         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
  82                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  83         else {
  84                 switch (pt->format) {
  85                 /* TODO: Figure out which formats can be swizzled */
  86                 case PIPE_FORMAT_A8R8G8B8_UNORM:
  87                 case PIPE_FORMAT_X8R8G8B8_UNORM:
  88                 case PIPE_FORMAT_R16_SNORM:
  89                         break;
  90                 default:
  91                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  92                 }
  93         }
  94
  95         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
  96                 buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
  97
  98         nv40_miptree_layout(mt);
  99
 100         mt->buffer = ws->_buffer_create(ws, 256, buf_usage, mt->total_size);
 101         if (!mt->buffer) {
 102                 FREE(mt);
 103                 return NULL;
 104         }
 105
 106         return &mt->base;
 107 }
 108
 109 static void
 110 nv40_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
 111 {
 112         struct pipe_texture *pt = *ppt;
 113         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
 114         int l;
 115
 116         *ppt = NULL;
 117         if (--pt->refcount)
 118                 return;
 119
 120         pipe_buffer_reference(pscreen, &mt->buffer, NULL);
 121         for (l = 0; l <= pt->last_level; l++) {
 122                 if (mt->level[l].image_offset)
 123                         FREE(mt->level[l].image_offset);
 124         }
 125
 126         if (mt->shadow_tex) {
 127                 assert(mt->shadow_surface);
 128                 pscreen->tex_surface_release(pscreen, &mt->shadow_surface);
 129                 nv40_miptree_release(pscreen, &mt->shadow_tex);
 130         }
 131
 132         FREE(mt);
 133 }
 134
 135 static struct pipe_surface *
 136 nv40_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 137                          unsigned face, unsigned level, unsigned zslice,
 138                          unsigned flags)
 139 {
 140         struct nv40_miptree *mt = (struct nv40_miptree *)pt;
 141         struct pipe_surface *ps;
 142
 143         ps = CALLOC_STRUCT(pipe_surface);
 144         if (!ps)
 145                 return NULL;
 146         pipe_texture_reference(&ps->texture, pt);
 147         pipe_buffer_reference(pscreen, &ps->buffer, mt->buffer);
 148         ps->format = pt->format;
 149         ps->width = pt->width[level];
 150         ps->height = pt->height[level];
 151         ps->block = pt->block;
 152         ps->nblocksx = pt->nblocksx[level];
 153         ps->nblocksy = pt->nblocksy[level];
 154         ps->stride = mt->level[level].pitch;
 155         ps->usage = flags;
 156         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 157         ps->refcount = 1;
 158         ps->face = face;
 159         ps->level = level;
 160         ps->zslice = zslice;
 161
 162         if (pt->target == PIPE_TEXTURE_CUBE) {
 163                 ps->offset = mt->level[level].image_offset[face];
 164         } else
 165         if (pt->target == PIPE_TEXTURE_3D) {
 166                 ps->offset = mt->level[level].image_offset[zslice];
 167         } else {
 168                 ps->offset = mt->level[level].image_offset[0];
 169         }
 170
 171         return ps;
 172 }
 173
 174 static void
 175 nv40_miptree_surface_del(struct pipe_screen *pscreen,
 176                          struct pipe_surface **psurface)
 177 {
 178         struct pipe_surface *ps = *psurface;
 179
 180         *psurface = NULL;
 181         if (--ps->refcount > 0)
 182                 return;
 183
 184         pipe_texture_reference(&ps->texture, NULL);
 185         pipe_buffer_reference(pscreen, &ps->buffer, NULL);
 186         FREE(ps);
 187 }
 188
 189 void
 190 nv40_screen_init_miptree_functions(struct pipe_screen *pscreen)
 191 {
 192         pscreen->texture_create = nv40_miptree_create;
 193         pscreen->texture_release = nv40_miptree_release;
 194         pscreen->get_tex_surface = nv40_miptree_surface_new;
 195         pscreen->tex_surface_release = nv40_miptree_surface_del;
 196 }
 197