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/*
* Cogl
*
* A Low Level GPU Graphics and Utilities API
*
* Copyright (C) 2013 Intel Corporation.
*
* 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 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 AUTHORS OR COPYRIGHT HOLDERS
* 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 __COGL_PIPELINE_HASH_H__
#define __COGL_PIPELINE_HASH_H__
#include "cogl-pipeline-cache.h"
typedef struct
{
/* Total number of pipelines that were ever added to the hash. This
* is not decremented when a pipeline is removed. It is only used to
* generate a warning if an unusually high number of pipelines are
* generated */
int n_unique_pipelines;
/* This is the expected minimum size we could prune the hash table
* to if we were to remove all pipelines that are not in use. This
* is only updated after we prune the table */
int expected_min_size;
/* String that will be used to describe the usage of this hash table
* in the debug warning when too many pipelines are generated. This
* must be a static string because it won't be copied or freed */
const char *debug_string;
unsigned int main_state;
unsigned int layer_state;
GHashTable *table;
} CoglPipelineHashTable;
void
_cogl_pipeline_hash_table_init (CoglPipelineHashTable *hash,
unsigned int main_state,
unsigned int layer_state,
const char *debug_string);
void
_cogl_pipeline_hash_table_destroy (CoglPipelineHashTable *hash);
/*
* Gets a pipeline from the hash that has the same state as
* @key_pipeline according to the limited state bits passed to
* _cogl_pipeline_hash_table_init(). If there is no matching pipelines
* already then a copy of key_pipeline is stored in the hash so that
* it will be used next time the function is called with a similar
* pipeline. In that case the copy itself will be returned
*/
CoglPipelineCacheEntry *
_cogl_pipeline_hash_table_get (CoglPipelineHashTable *hash,
CoglPipeline *key_pipeline);
#endif /* __COGL_PIPELINE_HASH_H__ */
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