src/gallium/drivers/nv30/nv30_miptree.c

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