0,0 → 1,175 |
/************************************************************************** |
* |
* Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas. |
* All Rights Reserved. |
* |
* 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, sub license, 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 NON-INFRINGEMENT. |
* IN NO EVENT SHALL TUNGSTEN GRAPHICS 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. |
* |
**************************************************************************/ |
|
/** |
* @file |
* Constant State Object (CSO) cache. |
* |
* The basic idea is that the states are created via the |
* create_state/bind_state/delete_state semantics. The driver is expected to |
* perform as much of the Gallium state translation to whatever its internal |
* representation is during the create call. Gallium then has a caching |
* mechanism where it stores the created states. When the pipeline needs an |
* actual state change, a bind call is issued. In the bind call the driver |
* gets its already translated representation. |
* |
* Those semantics mean that the driver doesn't do the repeated translations |
* of states on every frame, but only once, when a new state is actually |
* created. |
* |
* Even on hardware that doesn't do any kind of state cache, it makes the |
* driver look a lot neater, plus it avoids all the redundant state |
* translations on every frame. |
* |
* Currently our constant state objects are: |
* - alpha test |
* - blend |
* - depth stencil |
* - fragment shader |
* - rasterizer (old setup) |
* - sampler |
* - vertex shader |
* - vertex elements |
* |
* Things that are not constant state objects include: |
* - blend_color |
* - clip_state |
* - clear_color_state |
* - constant_buffer |
* - feedback_state |
* - framebuffer_state |
* - polygon_stipple |
* - scissor_state |
* - texture_state |
* - viewport_state |
* |
* @author Zack Rusin <zack@tungstengraphics.com> |
*/ |
|
#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_RASTERIZER, |
CSO_BLEND, |
CSO_DEPTH_STENCIL_ALPHA, |
CSO_SAMPLER, |
CSO_VELEMENTS, |
CSO_CACHE_MAX, |
}; |
|
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_sampler { |
struct pipe_sampler_state state; |
void *data; |
cso_state_callback delete_state; |
struct pipe_context *context; |
}; |
|
struct cso_velems_state { |
unsigned count; |
struct pipe_vertex_element velems[PIPE_MAX_ATTRIBS]; |
}; |
|
struct cso_velements { |
struct cso_velems_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, unsigned size); |
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 |