void
_pixman_implementation_lookup_composite (pixman_implementation_t *toplevel,
pixman_op_t op,
pixman_format_code_t src_format,
uint32_t src_flags,
pixman_format_code_t mask_format,
uint32_t mask_flags,
pixman_format_code_t dest_format,
uint32_t dest_flags,
pixman_implementation_t **out_imp,
pixman_composite_func_t *out_func)
{
pixman_implementation_t *imp;
cache_t *cache;
int i;
/* Check cache for fast paths */
cache = PIXMAN_GET_THREAD_LOCAL (fast_path_cache);
for (i = 0; i < N_CACHED_FAST_PATHS; ++i)
{
const pixman_fast_path_t *info = &(cache->cache[i].fast_path);
/* Note that we check for equality here, not whether
* the cached fast path matches. This is to prevent
* us from selecting an overly general fast path
* when a more specific one would work.
*/
if (info->op == op &&
info->src_format == src_format &&
info->mask_format == mask_format &&
info->dest_format == dest_format &&
info->src_flags == src_flags &&
info->mask_flags == mask_flags &&
info->dest_flags == dest_flags &&
info->func)
{
*out_imp = cache->cache[i].imp;
*out_func = cache->cache[i].fast_path.func;
goto update_cache;
}
}
for (imp = toplevel; imp != NULL; imp = imp->fallback)
{
const pixman_fast_path_t *info = imp->fast_paths;
while (info->op != PIXMAN_OP_NONE)
{
if ((info->op == op || info->op == PIXMAN_OP_any) &&
/* Formats */
((info->src_format == src_format) ||
(info->src_format == PIXMAN_any)) &&
((info->mask_format == mask_format) ||
(info->mask_format == PIXMAN_any)) &&
((info->dest_format == dest_format) ||
(info->dest_format == PIXMAN_any)) &&
/* Flags */
(info->src_flags & src_flags) == info->src_flags &&
(info->mask_flags & mask_flags) == info->mask_flags &&
(info->dest_flags & dest_flags) == info->dest_flags)
{
*out_imp = imp;
*out_func = info->func;
/* Set i to the last spot in the cache so that the
* move-to-front code below will work
*/
i = N_CACHED_FAST_PATHS - 1;
goto update_cache;
}
++info;
}
}
/* We should never reach this point */
_pixman_log_error (FUNC, "No known composite function\n");
*out_imp = NULL;
*out_func = dummy_composite_rect;
update_cache:
if (i)
{
while (i--)
cache->cache[i + 1] = cache->cache[i];
cache->cache[0].imp = *out_imp;
cache->cache[0].fast_path.op = op;
cache->cache[0].fast_path.src_format = src_format;
cache->cache[0].fast_path.src_flags = src_flags;
cache->cache[0].fast_path.mask_format = mask_format;
cache->cache[0].fast_path.mask_flags = mask_flags;
cache->cache[0].fast_path.dest_format = dest_format;
cache->cache[0].fast_path.dest_flags = dest_flags;
cache->cache[0].fast_path.func = *out_func;
}
}
pixman_bool_t
_pixman_implementation_lookup_composite (pixman_implementation_t *toplevel,
pixman_op_t op,
pixman_format_code_t src_format,
uint32_t src_flags,
pixman_format_code_t mask_format,
uint32_t mask_flags,
pixman_format_code_t dest_format,
uint32_t dest_flags,
pixman_implementation_t **out_imp,
pixman_composite_func_t *out_func)
{
static cache_t fast_path_cache;
static DWORD thread_id;
pixman_implementation_t *imp;
cache_t *cache;
int i;
/* tomnotcat: FIXME: use thread local storage to support multi thread access. */
if (thread_id) {
assert (GetCurrentThreadId () == thread_id);
}
else {
thread_id = GetCurrentThreadId ();
}
/* Check cache for fast paths */
cache = PIXMAN_GET_THREAD_LOCAL (fast_path_cache);
for (i = 0; i < N_CACHED_FAST_PATHS; ++i)
{
const pixman_fast_path_t *info = &(cache->cache[i].fast_path);
/* Note that we check for equality here, not whether
* the cached fast path matches. This is to prevent
* us from selecting an overly general fast path
* when a more specific one would work.
*/
if (info->op == op &&
info->src_format == src_format &&
info->mask_format == mask_format &&
info->dest_format == dest_format &&
info->src_flags == src_flags &&
info->mask_flags == mask_flags &&
info->dest_flags == dest_flags &&
info->func)
{
*out_imp = cache->cache[i].imp;
*out_func = cache->cache[i].fast_path.func;
goto update_cache;
}
}
for (imp = toplevel; imp != NULL; imp = imp->fallback)
{
const pixman_fast_path_t *info = imp->fast_paths;
while (info->op != PIXMAN_OP_NONE)
{
if ((info->op == op || info->op == PIXMAN_OP_any) &&
/* Formats */
((info->src_format == src_format) ||
(info->src_format == PIXMAN_any)) &&
((info->mask_format == mask_format) ||
(info->mask_format == PIXMAN_any)) &&
((info->dest_format == dest_format) ||
(info->dest_format == PIXMAN_any)) &&
/* Flags */
(info->src_flags & src_flags) == info->src_flags &&
(info->mask_flags & mask_flags) == info->mask_flags &&
(info->dest_flags & dest_flags) == info->dest_flags)
{
*out_imp = imp;
*out_func = info->func;
/* Set i to the last spot in the cache so that the
* move-to-front code below will work
*/
i = N_CACHED_FAST_PATHS - 1;
goto update_cache;
}
++info;
}
}
return FALSE;
update_cache:
if (i)
{
while (i--)
cache->cache[i + 1] = cache->cache[i];
cache->cache[0].imp = *out_imp;
cache->cache[0].fast_path.op = op;
cache->cache[0].fast_path.src_format = src_format;
cache->cache[0].fast_path.src_flags = src_flags;
cache->cache[0].fast_path.mask_format = mask_format;
cache->cache[0].fast_path.mask_flags = mask_flags;
cache->cache[0].fast_path.dest_format = dest_format;
cache->cache[0].fast_path.dest_flags = dest_flags;
cache->cache[0].fast_path.func = *out_func;
}
return TRUE;
}
