src/gallium/drivers/nv10/nv10_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 "nv10_context.h"
   7 #include "nv10_screen.h"
   8
   9 static void
  10 nv10_miptree_layout(struct nv10_miptree *nv10mt)
  11 {
  12         struct pipe_texture *pt = &nv10mt->base;
  13         boolean swizzled = FALSE;
  14         uint width = pt->width[0], height = pt->height[0], depth = pt->depth[0];
  15         uint offset = 0;
  16         int nr_faces, l, f;
  17
  18         if (pt->target == PIPE_TEXTURE_CUBE) {
  19                 nr_faces = 6;
  20         } else {
  21                 nr_faces = 1;
  22         }
  23
  24         for (l = 0; l <= pt->last_level; l++) {
  25                 pt->width[l] = width;
  26                 pt->height[l] = height;
  27                 pt->depth[l] = depth;
  28
  29                 if (swizzled)
  30                         nv10mt->level[l].pitch = pt->width[l] * pt->cpp;
  31                 else
  32                         nv10mt->level[l].pitch = pt->width[0] * pt->cpp;
  33                 nv10mt->level[l].pitch = (nv10mt->level[l].pitch + 63) & ~63;
  34
  35                 nv10mt->level[l].image_offset =
  36                         CALLOC(nr_faces, sizeof(unsigned));
  37
  38                 width  = MAX2(1, width  >> 1);
  39                 height = MAX2(1, height >> 1);
  40                 depth  = MAX2(1, depth  >> 1);
  41
  42         }
  43
  44         for (f = 0; f < nr_faces; f++) {
  45                 for (l = 0; l <= pt->last_level; l++) {
  46                         nv10mt->level[l].image_offset[f] = offset;
  47                         offset += nv10mt->level[l].pitch * pt->height[l];
  48                 }
  49         }
  50
  51         nv10mt->total_size = offset;
  52 }
  53
  54 static struct pipe_texture *
  55 nv10_miptree_create(struct pipe_screen *screen, struct pipe_texture *pt)
  56 {
  57         struct pipe_winsys *ws = screen->winsys;
  58         struct nv10_miptree *mt;
  59
  60         mt = MALLOC(sizeof(struct nv10_miptree));
  61         if (!mt)
  62                 return NULL;
  63         mt->base = *pt;
  64         mt->base.refcount = 1;
  65         mt->base.screen = screen;
  66
  67         nv10_miptree_layout(mt);
  68
  69         mt->buffer = ws->buffer_create(ws, 256, PIPE_BUFFER_USAGE_PIXEL,
  70                                            mt->total_size);
  71         if (!mt->buffer) {
  72                 FREE(mt);
  73                 return NULL;
  74         }
  75
  76         return &mt->base;
  77 }
  78
  79 static void
  80 nv10_miptree_release(struct pipe_screen *screen, struct pipe_texture **pt)
  81 {
  82         struct pipe_winsys *ws = screen->winsys;
  83         struct pipe_texture *mt = *pt;
  84
  85         *pt = NULL;
  86         if (--mt->refcount <= 0) {
  87                 struct nv10_miptree *nv10mt = (struct nv10_miptree *)mt;
  88                 int l;
  89
  90                 pipe_buffer_reference(ws, &nv10mt->buffer, NULL);
  91                 for (l = 0; l <= mt->last_level; l++) {
  92                         if (nv10mt->level[l].image_offset)
  93                                 FREE(nv10mt->level[l].image_offset);
  94                 }
  95                 FREE(nv10mt);
  96         }
  97 }
  98
  99 static void
 100 nv10_miptree_update(struct pipe_context *pipe, struct pipe_texture *mt,
 101                     uint face, uint levels)
 102 {
 103 }
 104
 105
 106 static struct pipe_surface *
 107 nv10_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
 108                          unsigned face, unsigned level, unsigned zslice)
 109 {
 110         struct pipe_winsys *ws = screen->winsys;
 111         struct nv10_miptree *nv10mt = (struct nv10_miptree *)pt;
 112         struct pipe_surface *ps;
 113
 114         ps = ws->surface_alloc(ws);
 115         if (!ps)
 116                 return NULL;
 117         pipe_buffer_reference(ws, &ps->buffer, nv10mt->buffer);
 118         ps->format = pt->format;
 119         ps->cpp = pt->cpp;
 120         ps->width = pt->width[level];
 121         ps->height = pt->height[level];
 122         ps->pitch = nv10mt->level[level].pitch / ps->cpp;
 123
 124         if (pt->target == PIPE_TEXTURE_CUBE) {
 125                 ps->offset = nv10mt->level[level].image_offset[face];
 126         } else {
 127                 ps->offset = nv10mt->level[level].image_offset[0];
 128         }
 129
 130         return ps;
 131 }
 132
 133 void nv10_init_miptree_functions(struct nv10_context *nv10)
 134 {
 135         nv10->pipe.texture_update = nv10_miptree_update;
 136 }
 137
 138 void nv10_screen_init_miptree_functions(struct pipe_screen *pscreen)
 139 {
 140         pscreen->texture_create = nv10_miptree_create;
 141         pscreen->texture_release = nv10_miptree_release;
 142         pscreen->get_tex_surface = nv10_miptree_surface_get;
 143 }
 144