src/gallium/drivers/nv50/nv50_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 "nv50_context.h"
   7
   8 struct nv50_miptree {
   9         struct pipe_texture base;
  10         struct pipe_buffer *buffer;
  11 };
  12
  13 static INLINE struct nv50_miptree *
  14 nv50_miptree(struct pipe_texture *pt)
  15 {
  16         return (struct nv50_miptree *)pt;
  17 }
  18
  19 static struct pipe_texture *
  20 nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
  21 {
  22         struct pipe_winsys *ws = pscreen->winsys;
  23         struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
  24
  25         NOUVEAU_ERR("unimplemented\n");
  26
  27         mt->base = *pt;
  28         mt->base.refcount = 1;
  29         mt->base.screen = pscreen;
  30
  31         mt->buffer = ws->buffer_create(ws, 256, PIPE_BUFFER_USAGE_PIXEL,
  32                                        pt->width[0] * pt->cpp * pt->height[0]);
  33         if (!mt->buffer) {
  34                 FREE(mt);
  35                 return NULL;
  36         }
  37
  38         return &mt->base;
  39 }
  40
  41 static void
  42 nv50_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
  43 {
  44         struct pipe_winsys *ws = pscreen->winsys;
  45         struct pipe_texture *pt = *ppt;
  46
  47         NOUVEAU_ERR("unimplemented\n");
  48
  49         *ppt = NULL;
  50         if (--pt->refcount <= 0) {
  51                 struct nv50_miptree *mt = nv50_miptree(pt);
  52
  53                 pipe_buffer_reference(ws, &mt->buffer, NULL);
  54                 FREE(mt);
  55         }
  56 }
  57
  58 static struct pipe_surface *
  59 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
  60                          unsigned face, unsigned level, unsigned zslice,
  61                          unsigned flags)
  62 {
  63         struct pipe_winsys *ws = pscreen->winsys;
  64         struct nv50_miptree *mt = nv50_miptree(pt);
  65         struct pipe_surface *ps;
  66
  67         NOUVEAU_ERR("unimplemented\n");
  68
  69         ps = ws->surface_alloc(ws);
  70         if (!ps)
  71                 return NULL;
  72
  73         pipe_buffer_reference(ws, &ps->buffer, mt->buffer);
  74         ps->format = pt->format;
  75         ps->width = pt->width[level];
  76         ps->height = pt->height[level];
  77         ps->block = pt->block;
  78         ps->nblocksx = pt->nblocksx[level];
  79         ps->nblocksy = pt->nblocksy[level];
  80         ps->stride = ps->width * ps->block.size;
  81         ps->offset = 0;
  82
  83         return ps;
  84 }
  85
  86 static void
  87 nv50_miptree_surface_del(struct pipe_screen *pscreen,
  88                          struct pipe_surface **psurface)
  89 {
  90 }
  91
  92 void
  93 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
  94 {
  95         pscreen->texture_create = nv50_miptree_create;
  96         pscreen->texture_release = nv50_miptree_release;
  97         pscreen->get_tex_surface = nv50_miptree_surface_new;
  98         pscreen->tex_surface_release = nv50_miptree_surface_del;
  99 }
 100