src/gallium/drivers/nv04/nv04_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 "nv04_context.h"
   7 #include "nv04_screen.h"
   8
   9 static void
  10 nv04_miptree_layout(struct nv04_miptree *nv04mt)
  11 {
  12         struct pipe_texture *pt = &nv04mt->base;
  13         uint width = pt->width[0], height = pt->height[0];
  14         uint offset = 0;
  15         int nr_faces, l, f;
  16
  17         nr_faces = 1;
  18
  19         for (l = 0; l <= pt->last_level; l++) {
  20                 pt->width[l] = width;
  21                 pt->height[l] = height;
  22
  23                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  24                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
  25
  26                 nv04mt->level[l].pitch = pt->width[0] * pt->block.size;
  27                 nv04mt->level[l].pitch = (nv04mt->level[l].pitch + 63) & ~63;
  28
  29                 nv04mt->level[l].image_offset =
  30                         CALLOC(nr_faces, sizeof(unsigned));
  31
  32                 width  = MAX2(1, width  >> 1);
  33                 height = MAX2(1, height >> 1);
  34
  35         }
  36
  37         for (f = 0; f < nr_faces; f++) {
  38                 for (l = 0; l <= pt->last_level; l++) {
  39                         nv04mt->level[l].image_offset[f] = offset;
  40                         offset += nv04mt->level[l].pitch * pt->height[l];
  41                 }
  42         }
  43
  44         nv04mt->total_size = offset;
  45 }
  46
  47 static struct pipe_texture *
  48 nv04_miptree_create(struct pipe_screen *screen, const struct pipe_texture *pt)
  49 {
  50         struct pipe_winsys *ws = screen->winsys;
  51         struct nv04_miptree *mt;
  52
  53         mt = MALLOC(sizeof(struct nv04_miptree));
  54         if (!mt)
  55                 return NULL;
  56         mt->base = *pt;
  57         mt->base.refcount = 1;
  58         mt->base.screen = screen;
  59
  60         nv04_miptree_layout(mt);
  61
  62         mt->buffer = ws->buffer_create(ws, 256, PIPE_BUFFER_USAGE_PIXEL,
  63                                            mt->total_size);
  64         if (!mt->buffer) {
  65                 FREE(mt);
  66                 return NULL;
  67         }
  68
  69         return &mt->base;
  70 }
  71
  72 static void
  73 nv04_miptree_release(struct pipe_screen *screen, struct pipe_texture **pt)
  74 {
  75         struct pipe_winsys *ws = screen->winsys;
  76         struct pipe_texture *mt = *pt;
  77
  78         *pt = NULL;
  79         if (--mt->refcount <= 0) {
  80                 struct nv04_miptree *nv04mt = (struct nv04_miptree *)mt;
  81                 int l;
  82
  83                 pipe_buffer_reference(ws, &nv04mt->buffer, NULL);
  84                 for (l = 0; l <= mt->last_level; l++) {
  85                         if (nv04mt->level[l].image_offset)
  86                                 FREE(nv04mt->level[l].image_offset);
  87                 }
  88                 FREE(nv04mt);
  89         }
  90 }
  91
  92 static struct pipe_surface *
  93 nv04_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
  94                          unsigned face, unsigned level, unsigned zslice,
  95                          unsigned flags)
  96 {
  97         struct pipe_winsys *ws = pscreen->winsys;
  98         struct nv04_miptree *nv04mt = (struct nv04_miptree *)pt;
  99         struct pipe_surface *ps;
 100
 101         ps = ws->surface_alloc(ws);
 102         if (!ps)
 103                 return NULL;
 104         pipe_buffer_reference(ws, &ps->buffer, nv04mt->buffer);
 105         ps->format = pt->format;
 106                 ps->width = pt->width[level];
 107         ps->height = pt->height[level];
 108         ps->block = pt->block;
 109         ps->width = pt->width[level];
 110         ps->height = pt->height[level];
 111         ps->nblocksx = pt->nblocksx[level];
 112         ps->nblocksy = pt->nblocksy[level];
 113         ps->stride = nv04mt->level[level].pitch;
 114
 115         if (pt->target == PIPE_TEXTURE_CUBE) {
 116                 ps->offset = nv04mt->level[level].image_offset[face];
 117         } else {
 118                 ps->offset = nv04mt->level[level].image_offset[0];
 119         }
 120
 121         return ps;
 122 }
 123
 124 static void
 125 nv04_miptree_surface_del(struct pipe_screen *pscreen,
 126                          struct pipe_surface **psurface)
 127 {
 128 }
 129
 130 void
 131 nv04_init_miptree_functions(struct pipe_screen *pscreen)
 132 {
 133         pscreen->texture_create = nv04_miptree_create;
 134         pscreen->texture_release = nv04_miptree_release;
 135         pscreen->get_tex_surface = nv04_miptree_surface_new;
 136         pscreen->tex_surface_release = nv04_miptree_surface_del;
 137 }
 138