1 /*
2 * Copyright (c) 2012-2015 Etnaviv Project
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sub license,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the
12 * next paragraph) shall be included in all copies or substantial portions
13 * of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Wladimir J. van der Laan <laanwj@gmail.com>
25 */
26
27 #include "etnaviv_tiling.h"
28
29 #include <stdint.h>
30 #include <stdio.h>
31
32 #define TEX_TILE_WIDTH (4)
33 #define TEX_TILE_HEIGHT (4)
34 #define TEX_TILE_WORDS (TEX_TILE_WIDTH * TEX_TILE_HEIGHT)
35
36 #define DO_TILE(type) \
37 src_stride /= sizeof(type); \
38 dst_stride = (dst_stride * TEX_TILE_HEIGHT) / sizeof(type); \
39 for (unsigned srcy = 0; srcy < height; ++srcy) { \
40 unsigned dsty = basey + srcy; \
41 unsigned ty = (dsty / TEX_TILE_HEIGHT) * dst_stride + \
42 (dsty % TEX_TILE_HEIGHT) * TEX_TILE_WIDTH; \
43 for (unsigned srcx = 0; srcx < width; ++srcx) { \
44 unsigned dstx = basex + srcx; \
45 ((type *)dest)[ty + (dstx / TEX_TILE_WIDTH) * TEX_TILE_WORDS + \
46 (dstx % TEX_TILE_WIDTH)] = \
47 ((type *)src)[srcy * src_stride + srcx]; \
48 } \
49 }
50
51 #define DO_UNTILE(type) \
52 src_stride = (src_stride * TEX_TILE_HEIGHT) / sizeof(type); \
53 dst_stride /= sizeof(type); \
54 for (unsigned dsty = 0; dsty < height; ++dsty) { \
55 unsigned srcy = basey + dsty; \
56 unsigned sy = (srcy / TEX_TILE_HEIGHT) * src_stride + \
57 (srcy % TEX_TILE_HEIGHT) * TEX_TILE_WIDTH; \
58 for (unsigned dstx = 0; dstx < width; ++dstx) { \
59 unsigned srcx = basex + dstx; \
60 ((type *)dest)[dsty * dst_stride + dstx] = \
61 ((type *)src)[sy + (srcx / TEX_TILE_WIDTH) * TEX_TILE_WORDS + \
62 (srcx % TEX_TILE_WIDTH)]; \
63 } \
64 }
65
66 void
etna_texture_tile(void * dest,void * src,unsigned basex,unsigned basey,unsigned dst_stride,unsigned width,unsigned height,unsigned src_stride,unsigned elmtsize)67 etna_texture_tile(void *dest, void *src, unsigned basex, unsigned basey,
68 unsigned dst_stride, unsigned width, unsigned height,
69 unsigned src_stride, unsigned elmtsize)
70 {
71 if (elmtsize == 4) {
72 DO_TILE(uint32_t)
73 } else if (elmtsize == 2) {
74 DO_TILE(uint16_t)
75 } else if (elmtsize == 1) {
76 DO_TILE(uint8_t)
77 } else {
78 printf("etna_texture_tile: unhandled element size %i\n", elmtsize);
79 }
80 }
81
82 void
etna_texture_untile(void * dest,void * src,unsigned basex,unsigned basey,unsigned src_stride,unsigned width,unsigned height,unsigned dst_stride,unsigned elmtsize)83 etna_texture_untile(void *dest, void *src, unsigned basex, unsigned basey,
84 unsigned src_stride, unsigned width, unsigned height,
85 unsigned dst_stride, unsigned elmtsize)
86 {
87 if (elmtsize == 4) {
88 DO_UNTILE(uint32_t);
89 } else if (elmtsize == 2) {
90 DO_UNTILE(uint16_t);
91 } else if (elmtsize == 1) {
92 DO_UNTILE(uint8_t);
93 } else {
94 printf("etna_texture_tile: unhandled element size %i\n", elmtsize);
95 }
96 }
97