src/gallium/drivers/llvmpipe/lp_tile_cache.h

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   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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  16  * of the Software.
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  27
  28 #ifndef LP_TILE_CACHE_H
  29 #define LP_TILE_CACHE_H
  30
  31
  32 #include "pipe/p_compiler.h"
  33 #include "lp_tile_soa.h"
  34
  35
  36 enum llvmpipe_tile_status
  37 {
  38    LP_TILE_STATUS_UNDEFINED = 0,
  39    LP_TILE_STATUS_CLEAR = 1,
  40    LP_TILE_STATUS_DEFINED = 2
  41 };
  42
  43
  44 struct llvmpipe_cached_tile
  45 {
  46    enum llvmpipe_tile_status status;
  47
  48    /** color in SOA format */
  49    uint8_t *color;
  50 };
  51
  52
  53 /** XXX move these */
  54 #define MAX_WIDTH 4096
  55 #define MAX_HEIGHT 4096
  56
  57
  58 struct llvmpipe_tile_cache
  59 {
  60    struct pipe_screen *screen;
  61    struct pipe_surface *surface;  /**< the surface we're caching */
  62    struct pipe_transfer *transfer;
  63    void *transfer_map;
  64
  65    struct llvmpipe_cached_tile entries[MAX_WIDTH/TILE_SIZE][MAX_HEIGHT/TILE_SIZE];
  66
  67    uint8_t clear_color[4];  /**< for color bufs */
  68    uint clear_val;        /**< for z+stencil, or packed color clear value */
  69
  70    struct llvmpipe_cached_tile *last_tile;  /**< most recently retrieved tile */
  71 };
  72
  73
  74 extern struct llvmpipe_tile_cache *
  75 lp_create_tile_cache( struct pipe_screen *screen );
  76
  77 extern void
  78 lp_destroy_tile_cache(struct llvmpipe_tile_cache *tc);
  79
  80 extern void
  81 lp_tile_cache_set_surface(struct llvmpipe_tile_cache *tc,
  82                           struct pipe_surface *lps);
  83
  84 extern struct pipe_surface *
  85 lp_tile_cache_get_surface(struct llvmpipe_tile_cache *tc);
  86
  87 extern void
  88 lp_tile_cache_map_transfers(struct llvmpipe_tile_cache *tc);
  89
  90 extern void
  91 lp_tile_cache_unmap_transfers(struct llvmpipe_tile_cache *tc);
  92
  93 extern void
  94 lp_flush_tile_cache(struct llvmpipe_tile_cache *tc);
  95
  96 extern void
  97 lp_tile_cache_clear(struct llvmpipe_tile_cache *tc, const float *rgba,
  98                     uint clearValue);
  99
 100 extern void *
 101 lp_get_cached_tile(struct llvmpipe_tile_cache *tc,
 102                    unsigned x, unsigned y );
 103
 104
 105 #endif /* LP_TILE_CACHE_H */
 106