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                 switch (pt->format) {
  81                 /* TODO: Figure out which formats can be swizzled */
  82                 case PIPE_FORMAT_A8R8G8B8_UNORM:
  83                 case PIPE_FORMAT_X8R8G8B8_UNORM:
  84                 /* XXX: Re-enable when SIFM size limits are fixed */
  85                 /*case PIPE_FORMAT_R16_SNORM:*/
  86                         break;
  87                 default:
  88                         mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
  89                 }
  90         }
  91
  92         nv30_miptree_layout(mt);
  93
  94         mt->buffer = ws->buffer_create(ws, 256,
  95                                        PIPE_BUFFER_USAGE_PIXEL |
  96                                        NOUVEAU_BUFFER_USAGE_TEXTURE,
  97                                        mt->total_size);
  98         if (!mt->buffer) {
  99                 FREE(mt);
 100                 return NULL;
 101         }
 102
 103         return &mt->base;
 104 }
 105
 106 static void
 107 nv30_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
 108 {
 109         struct pipe_texture *pt = *ppt;
 110         struct nv30_miptree *mt = (struct nv30_miptree *)pt;
 111         int l;
 112
 113         *ppt = NULL;
 114         if (--pt->refcount)
 115                 return;
 116
 117         pipe_buffer_reference(pscreen, &mt->buffer, NULL);
 118         for (l = 0; l <= pt->last_level; l++) {
 119                 if (mt->level[l].image_offset)
 120                         FREE(mt->level[l].image_offset);
 121         }
 122
 123         if (mt->shadow_tex) {
 124                 assert(mt->shadow_surface);
 125                 pscreen->tex_surface_release(pscreen, &mt->shadow_surface);
 126                 nv30_miptree_release(pscreen, &mt->shadow_tex);
 127         }
 128
 129         FREE(mt);
 130 }
 131
 132 static struct pipe_surface *
 133 nv30_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 134                          unsigned face, unsigned level, unsigned zslice,
 135                          unsigned flags)
 136 {
 137         struct nv30_miptree *nv30mt = (struct nv30_miptree *)pt;
 138         struct pipe_surface *ps;
 139
 140         ps = CALLOC_STRUCT(pipe_surface);
 141         if (!ps)
 142                 return NULL;
 143         pipe_texture_reference(&ps->texture, pt);
 144         pipe_buffer_reference(pscreen, &ps->buffer, nv30mt->buffer);
 145         ps->format = pt->format;
 146         ps->width = pt->width[level];
 147         ps->height = pt->height[level];
 148         ps->block = pt->block;
 149         ps->nblocksx = pt->nblocksx[level];
 150         ps->nblocksy = pt->nblocksy[level];
 151         ps->stride = nv30mt->level[level].pitch;
 152         ps->usage = flags;
 153         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 154         ps->refcount = 1;
 155         ps->winsys = pscreen->winsys;
 156         ps->face = face;
 157         ps->level = level;
 158         ps->zslice = zslice;
 159
 160         if (pt->target == PIPE_TEXTURE_CUBE) {
 161                 ps->offset = nv30mt->level[level].image_offset[face];
 162         } else
 163         if (pt->target == PIPE_TEXTURE_3D) {
 164                 ps->offset = nv30mt->level[level].image_offset[zslice];
 165         } else {
 166                 ps->offset = nv30mt->level[level].image_offset[0];
 167         }
 168
 169         return ps;
 170 }
 171
 172 static void
 173 nv30_miptree_surface_del(struct pipe_screen *pscreen,
 174                          struct pipe_surface **psurface)
 175 {
 176         struct pipe_surface *ps = *psurface;
 177
 178         *psurface = NULL;
 179         if (--ps->refcount > 0)
 180                 return;
 181
 182         pipe_texture_reference(&ps->texture, NULL);
 183         pipe_buffer_reference(pscreen->winsys, &ps->buffer, NULL);
 184         FREE(ps);
 185 }
 186
 187 void
 188 nv30_screen_init_miptree_functions(struct pipe_screen *pscreen)
 189 {
 190         pscreen->texture_create = nv30_miptree_create;
 191         pscreen->texture_release = nv30_miptree_release;
 192         pscreen->get_tex_surface = nv30_miptree_surface_new;
 193         pscreen->tex_surface_release = nv30_miptree_surface_del;
 194 }
 195