cso_cache.h

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/**************************************************************************
 *
 * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
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 * permit persons to whom the Software is furnished to do so, subject to
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 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 **************************************************************************/

#ifndef CSO_CACHE_H
#define CSO_CACHE_H

#include "pipe/p_context.h"
#include "pipe/p_state.h"

/* cso_hash.h is necessary for cso_hash_iter, as MSVC requires structures
 * returned by value to be fully defined */
#include "cso_hash.h"


#ifdef  __cplusplus
extern "C" {
#endif

enum cso_cache_type {
   CSO_BLEND,
   CSO_SAMPLER,
   CSO_DEPTH_STENCIL_ALPHA,
   CSO_RASTERIZER,
   CSO_FRAGMENT_SHADER,
   CSO_VERTEX_SHADER
};

typedef void (*cso_state_callback)(void *ctx, void *obj);

typedef void (*cso_sanitize_callback)(struct cso_hash *hash,
                                      enum cso_cache_type type,
                                      int max_size,
                                      void *user_data);

struct cso_cache;

struct cso_blend {
   struct pipe_blend_state state;
   void *data;
   cso_state_callback delete_state;
   struct pipe_context *context;
};

struct cso_depth_stencil_alpha {
   struct pipe_depth_stencil_alpha_state state;
   void *data;
   cso_state_callback delete_state;
   struct pipe_context *context;
};

struct cso_rasterizer {
   struct pipe_rasterizer_state state;
   void *data;
   cso_state_callback delete_state;
   struct pipe_context *context;
};

struct cso_fragment_shader {
   struct pipe_shader_state state;
   void *data;
   cso_state_callback delete_state;
   struct pipe_context *context;
};

struct cso_vertex_shader {
   struct pipe_shader_state state;
   void *data;
   cso_state_callback delete_state;
   struct pipe_context *context;
};

struct cso_sampler {
   struct pipe_sampler_state state;
   void *data;
   cso_state_callback delete_state;
   struct pipe_context *context;
};

unsigned cso_construct_key(void *item, int item_size);

struct cso_cache *cso_cache_create(void);
void cso_cache_delete(struct cso_cache *sc);

void cso_cache_set_sanitize_callback(struct cso_cache *sc,
                                     cso_sanitize_callback cb,
                                     void *user_data);

struct cso_hash_iter cso_insert_state(struct cso_cache *sc,
                                      unsigned hash_key, enum cso_cache_type type,
                                      void *state);
struct cso_hash_iter cso_find_state(struct cso_cache *sc,
                                    unsigned hash_key, enum cso_cache_type type);
struct cso_hash_iter cso_find_state_template(struct cso_cache *sc,
                                             unsigned hash_key, enum cso_cache_type type,
                                             void *templ);
void cso_for_each_state(struct cso_cache *sc, enum cso_cache_type type,
                        cso_state_callback func, void *user_data);
void * cso_take_state(struct cso_cache *sc, unsigned hash_key,
                      enum cso_cache_type type);

void cso_set_maximum_cache_size(struct cso_cache *sc, int number);
int cso_maximum_cache_size(const struct cso_cache *sc);

#ifdef  __cplusplus
}
#endif

#endif

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