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/**************************************************************************
*
* Copyright 2010 Luca Barbieri
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef U_SURFACES_H_
#define U_SURFACES_H_
#include "pipe/p_compiler.h"
#include "pipe/p_state.h"
#include "util/u_atomic.h"
#include "cso_cache/cso_hash.h"
struct util_surfaces
{
union
{
struct cso_hash *hash;
struct pipe_surface **array;
void* pv;
} u;
};
/* Return value indicates if the pipe surface result is new */
boolean
util_surfaces_do_get(struct util_surfaces *us, unsigned surface_struct_size,
struct pipe_context *ctx, struct pipe_resource *pt,
unsigned level, unsigned layer,
struct pipe_surface **res);
/* fast inline path for the very common case */
static INLINE boolean
util_surfaces_get(struct util_surfaces *us, unsigned surface_struct_size,
struct pipe_context *ctx, struct pipe_resource *pt,
unsigned level, unsigned layer,
struct pipe_surface **res)
{
if(likely((pt->target == PIPE_TEXTURE_2D || pt->target == PIPE_TEXTURE_RECT) && us->u.array))
{
struct pipe_surface *ps = us->u.array[level];
if(ps && ps->context == ctx)
{
p_atomic_inc(&ps->reference.count);
*res = ps;
return FALSE;
}
}
return util_surfaces_do_get(us, surface_struct_size, ctx, pt, level, layer, res);
}
static INLINE struct pipe_surface *
util_surfaces_peek(struct util_surfaces *us, struct pipe_resource *pt, unsigned level, unsigned layer)
{
if(!us->u.pv)
return 0;
if(unlikely(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE))
return cso_hash_iter_data(cso_hash_find(us->u.hash, (layer << 8) | level));
else
return us->u.array[level];
}
void util_surfaces_do_detach(struct util_surfaces *us, struct pipe_surface *ps);
static INLINE void
util_surfaces_detach(struct util_surfaces *us, struct pipe_surface *ps)
{
if(likely(ps->texture->target == PIPE_TEXTURE_2D || ps->texture->target == PIPE_TEXTURE_RECT))
{
us->u.array[ps->u.tex.level] = 0;
return;
}
util_surfaces_do_detach(us, ps);
}
void util_surfaces_destroy(struct util_surfaces *us, struct pipe_resource *pt, void (*destroy_surface) (struct pipe_surface *));
#endif
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