Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  1.  
  2. /**********************************************************
  3.  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
  4.  *
  5.  * Permission is hereby granted, free of charge, to any person
  6.  * obtaining a copy of this software and associated documentation
  7.  * files (the "Software"), to deal in the Software without
  8.  * restriction, including without limitation the rights to use, copy,
  9.  * modify, merge, publish, distribute, sublicense, and/or sell copies
  10.  * of the Software, and to permit persons to whom the Software is
  11.  * furnished to do so, subject to the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice shall be
  14.  * included in all copies or substantial portions of the Software.
  15.  *
  16.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17.  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19.  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  20.  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  21.  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22.  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23.  * SOFTWARE.
  24.  *
  25.  **********************************************************/
  26.  
  27. #ifndef SVGA_SCREEN_CACHE_H_
  28. #define SVGA_SCREEN_CACHE_H_
  29.  
  30.  
  31. #include "svga_types.h"
  32. #include "svga_reg.h"
  33. #include "svga3d_reg.h"
  34.  
  35. #include "os/os_thread.h"
  36.  
  37. #include "util/u_double_list.h"
  38.  
  39.  
  40. /* Guess the storage size of cached surfaces and try and keep it under
  41.  * this amount:
  42.  */
  43. #define SVGA_HOST_SURFACE_CACHE_BYTES (16 * 1024 * 1024)
  44.  
  45. /* Maximum number of discrete surfaces in the cache:
  46.  */
  47. #define SVGA_HOST_SURFACE_CACHE_SIZE 1024
  48.  
  49. /* Number of hash buckets:
  50.  */
  51. #define SVGA_HOST_SURFACE_CACHE_BUCKETS 256
  52.  
  53.  
  54. struct svga_winsys_surface;
  55. struct svga_screen;
  56.  
  57. /**
  58.  * Same as svga_winsys_screen::surface_create.
  59.  */
  60. struct svga_host_surface_cache_key
  61. {
  62.    SVGA3dSurfaceFlags flags;
  63.    SVGA3dSurfaceFormat format;
  64.    SVGA3dSize size;
  65.    uint32_t numFaces:24;
  66.    uint32_t numMipLevels:7;
  67.    uint32_t cachable:1;         /* False if this is a shared surface */
  68. };
  69.  
  70.  
  71. struct svga_host_surface_cache_entry
  72. {
  73.    /**
  74.     * Head for the LRU list, svga_host_surface_cache::unused, and
  75.     * svga_host_surface_cache::empty
  76.     */
  77.    struct list_head head;
  78.    
  79.    /** Head for the bucket lists. */
  80.    struct list_head bucket_head;
  81.  
  82.    struct svga_host_surface_cache_key key;
  83.    struct svga_winsys_surface *handle;
  84.    
  85.    struct pipe_fence_handle *fence;
  86. };
  87.  
  88.  
  89. /**
  90.  * Cache of the host surfaces.
  91.  *
  92.  * A cache entry can be in the following stages:
  93.  * 1. empty (entry->handle = NULL)
  94.  * 2. holding a buffer in a validate list
  95.  * 3. holding a flushed buffer (not in any validate list) with an active fence
  96.  * 4. holding a flushed buffer with an expired fence
  97.  *
  98.  * An entry progresses from 1 -> 2 -> 3 -> 4. When we need an entry to put a
  99.  * buffer into we preferentially take from 1, or from the least recently used
  100.  * buffer from 3/4.
  101.  */
  102. struct svga_host_surface_cache
  103. {
  104.    pipe_mutex mutex;
  105.    
  106.    /* Unused buffers are put in buckets to speed up lookups */
  107.    struct list_head bucket[SVGA_HOST_SURFACE_CACHE_BUCKETS];
  108.    
  109.    /* Entries with unused buffers, ordered from most to least recently used
  110.     * (3 and 4) */
  111.    struct list_head unused;
  112.    
  113.    /* Entries with buffers still in validate lists (2) */
  114.    struct list_head validated;
  115.    
  116.    /** Empty entries (1) */
  117.    struct list_head empty;
  118.  
  119.    /** The actual storage for the entries */
  120.    struct svga_host_surface_cache_entry entries[SVGA_HOST_SURFACE_CACHE_SIZE];
  121.  
  122.    /** Sum of sizes of all surfaces (in bytes) */
  123.    unsigned total_size;
  124. };
  125.  
  126.  
  127. void
  128. svga_screen_cache_cleanup(struct svga_screen *svgascreen);
  129.  
  130. void
  131. svga_screen_cache_flush(struct svga_screen *svgascreen,
  132.                         struct pipe_fence_handle *fence);
  133.  
  134. enum pipe_error
  135. svga_screen_cache_init(struct svga_screen *svgascreen);
  136.  
  137.  
  138. struct svga_winsys_surface *
  139. svga_screen_surface_create(struct svga_screen *svgascreen,
  140.                            struct svga_host_surface_cache_key *key);
  141.  
  142. void
  143. svga_screen_surface_destroy(struct svga_screen *svgascreen,
  144.                             const struct svga_host_surface_cache_key *key,
  145.                             struct svga_winsys_surface **handle);
  146.  
  147. void
  148. svga_screen_cache_dump(const struct svga_screen *svgascreen);
  149.  
  150.  
  151. #endif /* SVGA_SCREEN_CACHE_H_ */
  152.