src/gallium/drivers/nv30/nv30_miptree.c

   1 #include "pipe/p_state.h"
   2 #include "pipe/p_defines.h"
   3 #include "pipe/p_inlines.h"
   4
   5 #include "nv30_context.h"
   6
   7 static void
   8 nv30_miptree_layout(struct nv30_miptree *nv30mt)
   9 {
  10         struct pipe_texture *pt = &nv30mt->base;
  11         boolean swizzled = FALSE;
  12         uint width = pt->width[0], height = pt->height[0], depth = pt->depth[0];
  13         uint offset = 0;
  14         int nr_faces, l, f, pitch;
  15
  16         if (pt->target == PIPE_TEXTURE_CUBE) {
  17                 nr_faces = 6;
  18         } else
  19         if (pt->target == PIPE_TEXTURE_3D) {
  20                 nr_faces = pt->depth[0];
  21         } else {
  22                 nr_faces = 1;
  23         }
  24
  25         pitch = pt->width[0];
  26         for (l = 0; l <= pt->last_level; l++) {
  27                 pt->width[l] = width;
  28                 pt->height[l] = height;
  29                 pt->depth[l] = depth;
  30                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  31                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  32
  33                 if (swizzled)
  34                         pitch = pt->nblocksx[l];
  35                 pitch = align(pitch, 64);
  36
  37                 nv30mt->level[l].pitch = pitch * pt->block.size;
  38                 nv30mt->level[l].image_offset =
  39                         CALLOC(nr_faces, sizeof(unsigned));
  40
  41                 width  = MAX2(1, width  >> 1);
  42                 height = MAX2(1, height >> 1);
  43                 depth  = MAX2(1, depth  >> 1);
  44         }
  45
  46         for (f = 0; f < nr_faces; f++) {
  47                 for (l = 0; l <= pt->last_level; l++) {
  48                         nv30mt->level[l].image_offset[f] = offset;
  49                         offset += nv30mt->level[l].pitch * pt->height[l];
  50                 }
  51         }
  52
  53         nv30mt->total_size = offset;
  54 }
  55
  56 static struct pipe_texture *
  57 nv30_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  58 {
  59         struct pipe_winsys *ws = pscreen->winsys;
  60         struct nv30_miptree *mt;
  61
  62         mt = MALLOC(sizeof(struct nv30_miptree));
  63         if (!mt)
  64                 return NULL;
  65         mt->base = *pt;
  66         mt->base.refcount = 1;
  67         mt->base.screen = pscreen;
  68         mt->shadow_tex = NULL;
  69         mt->shadow_surface = NULL;
  70
  71         /* Swizzled textures must be POT */
  72         if (pt->width[0] & (pt->width[0] - 1) ||
  73             pt->height[0] & (pt->height[0] - 1))
  74                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  75         else
  76         if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
  77                              PIPE_TEXTURE_USAGE_DISPLAY_TARGET))
  78                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  79         else
  80         if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
  81                 mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  82         else {
  83                 switch (pt->format) {
  84                 /* TODO: Figure out which formats can be swizzled */
  85                 case PIPE_FORMAT_A8R8G8B8_UNORM:
  86                 case PIPE_FORMAT_X8R8G8B8_UNORM:
  87                 case PIPE_FORMAT_R16_SNORM:
  88                         break;
  89                 default:
  90                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  91                 }
  92         }
  93
  94         nv30_miptree_layout(mt);
  95
  96         mt->buffer = ws->buffer_create(ws, 256,
  97                                        PIPE_BUFFER_USAGE_PIXEL |
  98                                        NOUVEAU_BUFFER_USAGE_TEXTURE,
  99                                        mt->total_size);
 100         if (!mt->buffer) {
 101                 FREE(mt);
 102                 return NULL;
 103         }
 104
 105         return &mt->base;
 106 }
 107
 108 static void
 109 nv30_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
 110 {
 111         struct pipe_texture *pt = *ppt;
 112         struct nv30_miptree *mt = (struct nv30_miptree *)pt;
 113         int l;
 114
 115         *ppt = NULL;
 116         if (--pt->refcount)
 117                 return;
 118
 119         pipe_buffer_reference(pscreen, &mt->buffer, NULL);
 120         for (l = 0; l <= pt->last_level; l++) {
 121                 if (mt->level[l].image_offset)
 122                         FREE(mt->level[l].image_offset);
 123         }
 124
 125         if (mt->shadow_tex) {
 126                 assert(mt->shadow_surface);
 127                 pscreen->tex_surface_release(pscreen, &mt->shadow_surface);
 128                 nv30_miptree_release(pscreen, &mt->shadow_tex);
 129         }
 130
 131         FREE(mt);
 132 }
 133
 134 static struct pipe_surface *
 135 nv30_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 136                          unsigned face, unsigned level, unsigned zslice,
 137                          unsigned flags)
 138 {
 139         struct nv30_miptree *nv30mt = (struct nv30_miptree *)pt;
 140         struct pipe_surface *ps;
 141
 142         ps = CALLOC_STRUCT(pipe_surface);
 143         if (!ps)
 144                 return NULL;
 145         pipe_texture_reference(&ps->texture, pt);
 146         pipe_buffer_reference(pscreen, &ps->buffer, nv30mt->buffer);
 147         ps->format = pt->format;
 148         ps->width = pt->width[level];
 149         ps->height = pt->height[level];
 150         ps->block = pt->block;
 151         ps->nblocksx = pt->nblocksx[level];
 152         ps->nblocksy = pt->nblocksy[level];
 153         ps->stride = nv30mt->level[level].pitch;
 154         ps->usage = flags;
 155         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 156         ps->refcount = 1;
 157         ps->face = face;
 158         ps->level = level;
 159         ps->zslice = zslice;
 160
 161         if (pt->target == PIPE_TEXTURE_CUBE) {
 162                 ps->offset = nv30mt->level[level].image_offset[face];
 163         } else
 164         if (pt->target == PIPE_TEXTURE_3D) {
 165                 ps->offset = nv30mt->level[level].image_offset[zslice];
 166         } else {
 167                 ps->offset = nv30mt->level[level].image_offset[0];
 168         }
 169
 170         return ps;
 171 }
 172
 173 static void
 174 nv30_miptree_surface_del(struct pipe_screen *pscreen,
 175                          struct pipe_surface **psurface)
 176 {
 177         struct pipe_surface *ps = *psurface;
 178
 179         *psurface = NULL;
 180         if (--ps->refcount > 0)
 181                 return;
 182
 183         pipe_texture_reference(&ps->texture, NULL);
 184         pipe_buffer_reference(pscreen, &ps->buffer, NULL);
 185         FREE(ps);
 186 }
 187
 188 void
 189 nv30_screen_init_miptree_functions(struct pipe_screen *pscreen)
 190 {
 191         pscreen->texture_create = nv30_miptree_create;
 192         pscreen->texture_release = nv30_miptree_release;
 193         pscreen->get_tex_surface = nv30_miptree_surface_new;
 194         pscreen->tex_surface_release = nv30_miptree_surface_del;
 195 }