src/gallium/auxiliary/util/u_surfaces.h

   1 #ifndef U_SURFACES_H_
   2 #define U_SURFACES_H_
   3
   4 #include "pipe/p_compiler.h"
   5 #include "pipe/p_state.h"
   6 #include "util/u_atomic.h"
   7
   8 struct util_hash_table;
   9
  10 struct util_surfaces
  11 {
  12    union
  13    {
  14       struct util_hash_table *table;
  15       struct pipe_surface **array;
  16    } u;
  17 };
  18
  19 struct pipe_surface *util_surfaces_do_get(struct util_surfaces *us, unsigned surface_struct_size, struct pipe_screen *pscreen, struct pipe_resource *pt, unsigned face, unsigned level, unsigned zslice, unsigned flags);
  20
  21 /* fast inline path for the very common case */
  22 static INLINE struct pipe_surface *
  23 util_surfaces_get(struct util_surfaces *us, unsigned surface_struct_size, struct pipe_screen *pscreen, struct pipe_resource *pt, unsigned face, unsigned level, unsigned zslice, unsigned flags)
  24 {
  25    if(likely(pt->target == PIPE_TEXTURE_2D && us->u.array))
  26    {
  27       struct pipe_surface *ps = us->u.array[level];
  28       if(ps)
  29       {
  30          p_atomic_inc(&ps->reference.count);
  31          return ps;
  32       }
  33    }
  34
  35    return util_surfaces_do_get(us, surface_struct_size, pscreen, pt, face, level, zslice, flags);
  36 }
  37
  38 void util_surfaces_do_detach(struct util_surfaces *us, struct pipe_surface *ps);
  39
  40 static INLINE void
  41 util_surfaces_detach(struct util_surfaces *us, struct pipe_surface *ps)
  42 {
  43    if(likely(ps->texture->target == PIPE_TEXTURE_2D))
  44    {
  45       us->u.array[ps->level] = 0;
  46       return;
  47    }
  48
  49    return util_surfaces_do_detach(us, ps);
  50 }
  51
  52 void util_surfaces_destroy(struct util_surfaces *us, struct pipe_resource *pt, void (*destroy_surface) (struct pipe_surface *));
  53
  54 #endif