1 /*
2 * Copyright © 2014 Broadcom
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, sublicense,
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 next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * 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 NONINFRINGEMENT. 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 DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #ifndef VC4_TILING_H
25 #define VC4_TILING_H
26
27
28 /** Return the width in pixels of a 64-byte microtile. */
29 static inline uint32_t
vc4_utile_width(int cpp)30 vc4_utile_width(int cpp)
31 {
32 switch (cpp) {
33 case 1:
34 case 2:
35 return 8;
36 case 4:
37 return 4;
38 case 8:
39 return 2;
40 default:
41 fprintf(stderr, "unknown cpp: %d\n", cpp);
42 abort();
43 }
44 }
45
46 /** Return the height in pixels of a 64-byte microtile. */
47 static inline uint32_t
vc4_utile_height(int cpp)48 vc4_utile_height(int cpp)
49 {
50 switch (cpp) {
51 case 1:
52 return 8;
53 case 2:
54 case 4:
55 case 8:
56 return 4;
57 default:
58 fprintf(stderr, "unknown cpp: %d\n", cpp);
59 abort();
60 }
61 }
62
63 bool vc4_size_is_lt(uint32_t width, uint32_t height, int cpp) ATTRIBUTE_CONST;
64 void vc4_load_tiled_image(void *dst, uint32_t dst_stride,
65 void *src, uint32_t src_stride,
66 uint8_t tiling_format, int cpp,
67 const struct pipe_box *box);
68 void vc4_store_tiled_image(void *dst, uint32_t dst_stride,
69 void *src, uint32_t src_stride,
70 uint8_t tiling_format, int cpp,
71 const struct pipe_box *box);
72
73 #endif /* VC4_TILING_H */
74