u_linear.c revision ea4bf267e4b023b08043f91ac44592fed1736e7f 
1
2#include "util/u_debug.h"
3#include "u_linear.h"
4
5void
6pipe_linear_to_tile(size_t src_stride, const void *src_ptr,
7		    struct pipe_tile_info *t, void *dst_ptr)
8{
9   int x, y, z;
10   char *ptr;
11   size_t bytes = t->cols * t->block.size;
12   char *dst_ptr2 = (char *) dst_ptr;
13
14   assert(pipe_linear_check_tile(t));
15
16   /* lets write lineary to the tiled buffer */
17   for (y = 0; y < t->tiles_y; y++) {
18      for (x = 0; x < t->tiles_x; x++) {
19	 /* this inner loop could be replace with SSE magic */
20	 ptr = (char*)src_ptr + src_stride * t->rows * y + bytes * x;
21	 for (z = 0; z < t->rows; z++) {
22	    memcpy(dst_ptr2, ptr, bytes);
23	    dst_ptr2 += bytes;
24	    ptr += src_stride;
25	 }
26      }
27   }
28}
29
30void pipe_linear_from_tile(struct pipe_tile_info *t, const void *src_ptr,
31			   size_t dst_stride, void *dst_ptr)
32{
33   int x, y, z;
34   char *ptr;
35   size_t bytes = t->cols * t->block.size;
36   const char *src_ptr2 = (const char *) src_ptr;
37
38   /* lets read lineary from the tiled buffer */
39   for (y = 0; y < t->tiles_y; y++) {
40      for (x = 0; x < t->tiles_x; x++) {
41	 /* this inner loop could be replace with SSE magic */
42	 ptr = (char*)dst_ptr + dst_stride * t->rows * y + bytes * x;
43	 for (z = 0; z < t->rows; z++) {
44	    memcpy(ptr, src_ptr2, bytes);
45	    src_ptr2 += bytes;
46	    ptr += dst_stride;
47	 }
48      }
49   }
50}
51
52void
53pipe_linear_fill_info(struct pipe_tile_info *t,
54		      const struct pipe_format_block *block,
55		      unsigned tile_width, unsigned tile_height,
56		      unsigned tiles_x, unsigned tiles_y)
57{
58   t->block = *block;
59
60   t->tile.width = tile_width;
61   t->tile.height = tile_height;
62   t->cols = t->tile.width / t->block.width;
63   t->rows = t->tile.height / t->block.height;
64   t->tile.size = t->cols * t->rows * t->block.size;
65
66   t->tiles_x = tiles_x;
67   t->tiles_y = tiles_y;
68   t->stride = t->cols * t->tiles_x * t->block.size;
69   t->size = t->tiles_x * t->tiles_y * t->tile.size;
70}
71