src/gallium/auxiliary/util/u_linear.h

   1
   2 #ifndef U_LINEAR_H
   3 #define U_LINEAR_H
   4
   5 #include "pipe/p_format.h"
   6 struct pipe_tile_info
   7 {
   8    unsigned size;
   9    unsigned stride;
  10
  11    /* The number of tiles */
  12    unsigned tiles_x;
  13    unsigned tiles_y;
  14
  15    /* size of each tile expressed in blocks */
  16    unsigned cols;
  17    unsigned rows;
  18
  19    /* Describe the tile in pixels */
  20    struct pipe_format_block tile;
  21
  22    /* Describe each block within the tile */
  23    struct pipe_format_block block;
  24 };
  25
  26 void pipe_linear_to_tile(size_t src_stride, void *src_ptr,
  27                          struct pipe_tile_info *t, void  *dst_ptr);
  28
  29 void pipe_linear_from_tile(struct pipe_tile_info *t, void  *src_ptr,
  30                            size_t dst_stride, void *dst_ptr);
  31
  32 /**
  33  * Convenience function to fillout a pipe_tile_info struct.
  34  * @t info to fill out.
  35  * @block block info about pixel layout
  36  * @tile_width the width of the tile in pixels
  37  * @tile_height the height of the tile in pixels
  38  * @tiles_x number of tiles in x axis
  39  * @tiles_y number of tiles in y axis
  40  */
  41 void pipe_linear_fill_info(struct pipe_tile_info *t,
  42                            struct pipe_format_block *block,
  43                            unsigned tile_width, unsigned tile_height,
  44                            unsigned tiles_x, unsigned tiles_y);
  45
  46 static INLINE boolean pipe_linear_check_tile(struct pipe_tile_info *t)
  47 {
  48    if (t->tile.size != t->block.size * t->cols * t->rows)
  49       return FALSE;
  50
  51    if (t->stride != t->block.size * t->cols * t->tiles_x)
  52       return FALSE;
  53
  54    if (t->size < t->stride * t->rows * t->tiles_y)
  55       return FALSE;
  56
  57    return TRUE;
  58 }
  59
  60 #endif /* U_LINEAR_H */