/**************************************************************************
*
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
*
**************************************************************************/
- /*
- * Authors:
- * Zack Rusin <zack@tungstengraphics.com>
+ /**
+ * @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
#include "pipe/p_context.h"
#include "pipe/p_state.h"
-#include "cso_hash.h" /* for cso_hash_iter, as MSVC requires structures returned by value to be fully defined */
+/* 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
-
-struct cso_cache {
- struct cso_hash *blend_hash;
- struct cso_hash *depth_stencil_hash;
- struct cso_hash *fs_hash;
- struct cso_hash *vs_hash;
- struct cso_hash *rasterizer_hash;
- struct cso_hash *sampler_hash;
+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;
+ 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;
-};
-
-struct cso_fragment_shader {
- struct pipe_shader_state state;
- void *data;
-};
-
-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;
};
+struct cso_velems_state {
+ unsigned count;
+ struct pipe_vertex_element velems[PIPE_MAX_ATTRIBS];
+};
-enum cso_cache_type {
- CSO_BLEND,
- CSO_SAMPLER,
- CSO_DEPTH_STENCIL_ALPHA,
- CSO_RASTERIZER,
- CSO_FRAGMENT_SHADER,
- CSO_VERTEX_SHADER
+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);
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 *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
}
projects / mesa.git / blobdiff