1 /**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 /**
29 * Functions for converting tiled data to linear and vice versa.
30 */
31
32
33 #include "util/u_debug.h"
34 #include "u_linear.h"
35
36 void
pipe_linear_to_tile(size_t src_stride,const void * src_ptr,struct pipe_tile_info * t,void * dst_ptr)37 pipe_linear_to_tile(size_t src_stride, const void *src_ptr,
38 struct pipe_tile_info *t, void *dst_ptr)
39 {
40 unsigned x, y, z;
41 char *ptr;
42 size_t bytes = t->cols * t->block.size;
43 char *dst_ptr2 = (char *) dst_ptr;
44
45 assert(pipe_linear_check_tile(t));
46
47 /* lets write linearly to the tiled buffer */
48 for (y = 0; y < t->tiles_y; y++) {
49 for (x = 0; x < t->tiles_x; x++) {
50 /* this inner loop could be replace with SSE magic */
51 ptr = (char*)src_ptr + src_stride * t->rows * y + bytes * x;
52 for (z = 0; z < t->rows; z++) {
53 memcpy(dst_ptr2, ptr, bytes);
54 dst_ptr2 += bytes;
55 ptr += src_stride;
56 }
57 }
58 }
59 }
60
pipe_linear_from_tile(struct pipe_tile_info * t,const void * src_ptr,size_t dst_stride,void * dst_ptr)61 void pipe_linear_from_tile(struct pipe_tile_info *t, const void *src_ptr,
62 size_t dst_stride, void *dst_ptr)
63 {
64 unsigned x, y, z;
65 char *ptr;
66 size_t bytes = t->cols * t->block.size;
67 const char *src_ptr2 = (const char *) src_ptr;
68
69 /* lets read linearly from the tiled buffer */
70 for (y = 0; y < t->tiles_y; y++) {
71 for (x = 0; x < t->tiles_x; x++) {
72 /* this inner loop could be replace with SSE magic */
73 ptr = (char*)dst_ptr + dst_stride * t->rows * y + bytes * x;
74 for (z = 0; z < t->rows; z++) {
75 memcpy(ptr, src_ptr2, bytes);
76 src_ptr2 += bytes;
77 ptr += dst_stride;
78 }
79 }
80 }
81 }
82
83 void
pipe_linear_fill_info(struct pipe_tile_info * t,const struct u_linear_format_block * block,unsigned tile_width,unsigned tile_height,unsigned tiles_x,unsigned tiles_y)84 pipe_linear_fill_info(struct pipe_tile_info *t,
85 const struct u_linear_format_block *block,
86 unsigned tile_width, unsigned tile_height,
87 unsigned tiles_x, unsigned tiles_y)
88 {
89 t->block = *block;
90
91 t->tile.width = tile_width;
92 t->tile.height = tile_height;
93 t->cols = t->tile.width / t->block.width;
94 t->rows = t->tile.height / t->block.height;
95 t->tile.size = t->cols * t->rows * t->block.size;
96
97 t->tiles_x = tiles_x;
98 t->tiles_y = tiles_y;
99 t->stride = t->cols * t->tiles_x * t->block.size;
100 t->size = t->tiles_x * t->tiles_y * t->tile.size;
101 }
102