1/**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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#ifndef LP_TILE_SOA_H
29#define LP_TILE_SOA_H
30
31#include "pipe/p_compiler.h"
32#include "tgsi/tgsi_exec.h" /* for TGSI_NUM_CHANNELS */
33#include "lp_limits.h"
34
35#ifdef __cplusplus
36extern "C" {
37#endif
38
39
40struct pipe_transfer;
41
42
43#define TILE_VECTOR_HEIGHT 4
44#define TILE_VECTOR_WIDTH 4
45
46extern const unsigned char
47tile_offset[TILE_VECTOR_HEIGHT][TILE_VECTOR_WIDTH];
48
49#define TILE_C_STRIDE (TILE_VECTOR_HEIGHT * TILE_VECTOR_WIDTH) //16
50#define TILE_X_STRIDE (TGSI_NUM_CHANNELS * TILE_C_STRIDE) //64
51#define TILE_Y_STRIDE (TILE_VECTOR_HEIGHT * TILE_SIZE * TGSI_NUM_CHANNELS) //1024
52
53
54#ifdef DEBUG
55extern unsigned lp_tile_unswizzle_count;
56extern unsigned lp_tile_swizzle_count;
57#endif
58
59
60/**
61 * Return offset of the given pixel (and color channel) from the start
62 * of a tile, in bytes.
63 */
64static INLINE unsigned
65tile_pixel_offset(unsigned x, unsigned y, unsigned c)
66{
67   unsigned ix = (x / TILE_VECTOR_WIDTH) * TILE_X_STRIDE;
68   unsigned iy = (y / TILE_VECTOR_HEIGHT) * TILE_Y_STRIDE;
69   unsigned offset = iy + ix + c * TILE_C_STRIDE +
70      tile_offset[y % TILE_VECTOR_HEIGHT][x % TILE_VECTOR_WIDTH];
71   return offset;
72}
73
74
75#define TILE_PIXEL(_p, _x, _y, _c)   ((_p)[tile_pixel_offset(_x, _y, _c)])
76
77
78void
79lp_tile_swizzle_4ub(enum pipe_format format,
80                 uint8_t *dst,
81                 const void *src, unsigned src_stride,
82                 unsigned x, unsigned y);
83
84
85void
86lp_tile_unswizzle_4ub(enum pipe_format format,
87                  const uint8_t *src,
88                  void *dst, unsigned dst_stride,
89                  unsigned x, unsigned y);
90
91
92
93#ifdef __cplusplus
94}
95#endif
96
97#endif
98