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#include "u_surfaces.h"
#include "util/u_hash_table.h"
#include "util/u_inlines.h"
#include "util/u_memory.h"
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)
{
struct pipe_surface *ps;
if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
{ /* or 2D array */
if(!us->u.hash)
us->u.hash = cso_hash_create();
ps = cso_hash_iter_data(cso_hash_find(us->u.hash, ((zslice + face) << 8) | level));
}
else
{
if(!us->u.array)
us->u.array = CALLOC(pt->last_level + 1, sizeof(struct pipe_surface *));
ps = us->u.array[level];
}
if(ps)
{
p_atomic_inc(&ps->reference.count);
return ps;
}
ps = (struct pipe_surface *)CALLOC(1, surface_struct_size);
if(!ps)
return NULL;
pipe_surface_init(ps, pt, face, level, zslice, flags);
ps->offset = ~0;
if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
cso_hash_insert(us->u.hash, ((zslice + face) << 8) | level, ps);
else
us->u.array[level] = ps;
return ps;
}
void
util_surfaces_do_detach(struct util_surfaces *us, struct pipe_surface *ps)
{
struct pipe_resource *pt = ps->texture;
if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
{ /* or 2D array */
cso_hash_erase(us->u.hash, cso_hash_find(us->u.hash, ((ps->zslice + ps->face) << 8) | ps->level));
}
else
us->u.array[ps->level] = 0;
}
void
util_surfaces_destroy(struct util_surfaces *us, struct pipe_resource *pt, void (*destroy_surface) (struct pipe_surface *))
{
if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
{ /* or 2D array */
if(us->u.hash)
{
struct cso_hash_iter iter;
iter = cso_hash_first_node(us->u.hash);
while (!cso_hash_iter_is_null(iter)) {
destroy_surface(cso_hash_iter_data(iter));
iter = cso_hash_iter_next(iter);
}
cso_hash_delete(us->u.hash);
us->u.hash = NULL;
}
}
else
{
if(us->u.array)
{
unsigned i;
for(i = 0; i <= pt->last_level; ++i)
{
struct pipe_surface *ps = us->u.array[i];
if(ps)
destroy_surface(ps);
}
FREE(us->u.array);
us->u.array = NULL;
}
}
}
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