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 *nv40mt)
   9 {
  10         struct pipe_texture *pt = &nv40mt->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                 nv40mt->level[l].pitch = pitch * pt->block.size;
  38                 nv40mt->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                         nv40mt->level[l].image_offset[f] = offset;
  49                         offset += nv40mt->level[l].pitch * pt->height[l];
  50                 }
  51         }
  52
  53         nv40mt->total_size = offset;
  54 }
  55
  56 static struct pipe_texture *
  57 nv40_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  58 {
  59         struct pipe_winsys *ws = pscreen->winsys;
  60         struct nv40_miptree *mt;
  61
  62         mt = MALLOC(sizeof(struct nv40_miptree));
  63         if (!mt)
  64                 return NULL;
  65         mt->base = *pt;
  66         mt->base.refcount = 1;
  67         mt->base.screen = pscreen;
  68
  69         nv40_miptree_layout(mt);
  70
  71         mt->buffer = ws->buffer_create(ws, 256,
  72                                        PIPE_BUFFER_USAGE_PIXEL |
  73                                        NOUVEAU_BUFFER_USAGE_TEXTURE,
  74                                        mt->total_size);
  75         if (!mt->buffer) {
  76                 FREE(mt);
  77                 return NULL;
  78         }
  79
  80         return &mt->base;
  81 }
  82
  83 static void
  84 nv40_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **pt)
  85 {
  86         struct pipe_texture *mt = *pt;
  87
  88         *pt = NULL;
  89         if (--mt->refcount <= 0) {
  90                 struct nv40_miptree *nv40mt = (struct nv40_miptree *)mt;
  91                 int l;
  92
  93                 pipe_buffer_reference(pscreen, &nv40mt->buffer, NULL);
  94                 for (l = 0; l <= mt->last_level; l++) {
  95                         if (nv40mt->level[l].image_offset)
  96                                 FREE(nv40mt->level[l].image_offset);
  97                 }
  98                 FREE(nv40mt);
  99         }
 100 }
 101
 102 static struct pipe_surface *
 103 nv40_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 104                          unsigned face, unsigned level, unsigned zslice,
 105                          unsigned flags)
 106 {
 107         struct nv40_miptree *nv40mt = (struct nv40_miptree *)pt;
 108         struct pipe_surface *ps;
 109
 110         ps = CALLOC_STRUCT(pipe_surface);
 111         if (!ps)
 112                 return NULL;
 113         pipe_texture_reference(&ps->texture, pt);
 114         pipe_buffer_reference(pscreen, &ps->buffer, nv40mt->buffer);
 115         ps->format = pt->format;
 116         ps->width = pt->width[level];
 117         ps->height = pt->height[level];
 118         ps->block = pt->block;
 119         ps->nblocksx = pt->nblocksx[level];
 120         ps->nblocksy = pt->nblocksy[level];
 121         ps->stride = nv40mt->level[level].pitch;
 122         ps->usage = flags;
 123         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 124
 125         if (pt->target == PIPE_TEXTURE_CUBE) {
 126                 ps->offset = nv40mt->level[level].image_offset[face];
 127         } else
 128         if (pt->target == PIPE_TEXTURE_3D) {
 129                 ps->offset = nv40mt->level[level].image_offset[zslice];
 130         } else {
 131                 ps->offset = nv40mt->level[level].image_offset[0];
 132         }
 133
 134         return ps;
 135 }
 136
 137 static void
 138 nv40_miptree_surface_del(struct pipe_screen *pscreen,
 139                          struct pipe_surface **psurface)
 140 {
 141         struct pipe_surface *ps = *psurface;
 142
 143         *psurface = NULL;
 144         if (--ps->refcount > 0)
 145                 return;
 146
 147         pipe_texture_reference(&ps->texture, NULL);
 148         pipe_buffer_reference(pscreen, &ps->buffer, NULL);
 149         FREE(ps);
 150 }
 151
 152 void
 153 nv40_screen_init_miptree_functions(struct pipe_screen *pscreen)
 154 {
 155         pscreen->texture_create = nv40_miptree_create;
 156         pscreen->texture_release = nv40_miptree_release;
 157         pscreen->get_tex_surface = nv40_miptree_surface_new;
 158         pscreen->tex_surface_release = nv40_miptree_surface_del;
 159 }
 160