1 /*
2 * Copyright © 2018 Rob Clark <[email protected]>
3 * Copyright © 2018-2019 Google, Inc.
4 * SPDX-License-Identifier: MIT
5 *
6 * Authors:
7 * Rob Clark <[email protected]>
8 */
9
10 #include <stdio.h>
11
12 #include "freedreno_layout.h"
13
14 void
fdl5_layout(struct fdl_layout * layout,enum pipe_format format,uint32_t nr_samples,uint32_t width0,uint32_t height0,uint32_t depth0,uint32_t mip_levels,uint32_t array_size,bool is_3d)15 fdl5_layout(struct fdl_layout *layout, enum pipe_format format,
16 uint32_t nr_samples, uint32_t width0, uint32_t height0,
17 uint32_t depth0, uint32_t mip_levels, uint32_t array_size,
18 bool is_3d)
19 {
20 assert(nr_samples > 0);
21 layout->width0 = width0;
22 layout->height0 = height0;
23 layout->depth0 = depth0;
24
25 layout->cpp = util_format_get_blocksize(format);
26 layout->cpp *= nr_samples;
27 layout->cpp_shift = ffs(layout->cpp) - 1;
28
29 layout->format = format;
30 layout->nr_samples = nr_samples;
31 layout->layer_first = !is_3d;
32
33 uint32_t heightalign = layout->cpp == 1 ? 32 : 16;
34 /* in layer_first layout, the level (slice) contains just one
35 * layer (since in fact the layer contains the slices)
36 */
37 uint32_t layers_in_level = layout->layer_first ? 1 : array_size;
38
39 /* use 128 pixel alignment for cpp=1 and cpp=2 */
40 if (layout->cpp < 4 && layout->tile_mode)
41 fdl_set_pitchalign(layout, fdl_cpp_shift(layout) + 7);
42 else
43 fdl_set_pitchalign(layout, fdl_cpp_shift(layout) + 6);
44
45 for (uint32_t level = 0; level < mip_levels; level++) {
46 uint32_t depth = u_minify(depth0, level);
47 struct fdl_slice *slice = &layout->slices[level];
48 uint32_t tile_mode = fdl_tile_mode(layout, level);
49 uint32_t pitch = fdl_pitch(layout, level);
50 uint32_t nblocksy =
51 util_format_get_nblocksy(format, u_minify(height0, level));
52
53 if (tile_mode) {
54 nblocksy = align(nblocksy, heightalign);
55 } else {
56 /* The blits used for mem<->gmem work at a granularity of
57 * 32x32, which can cause faults due to over-fetch on the
58 * last level. The simple solution is to over-allocate a
59 * bit the last level to ensure any over-fetch is harmless.
60 * The pitch is already sufficiently aligned, but height
61 * may not be:
62 */
63 if (level == mip_levels - 1)
64 nblocksy = align(nblocksy, 32);
65 }
66
67 slice->offset = layout->size;
68
69 /* 1d array and 2d array textures must all have the same layer size
70 * for each miplevel on a3xx. 3d textures can have different layer
71 * sizes for high levels, but the hw auto-sizer is buggy (or at least
72 * different than what this code does), so as soon as the layer size
73 * range gets into range, we stop reducing it.
74 */
75 if (is_3d) {
76 if (level <= 1 || layout->slices[level - 1].size0 > 0xf000) {
77 slice->size0 = align(nblocksy * pitch, 4096);
78 } else {
79 slice->size0 = layout->slices[level - 1].size0;
80 }
81 } else {
82 slice->size0 = nblocksy * pitch;
83 }
84
85 layout->size += slice->size0 * depth * layers_in_level;
86 }
87
88 if (layout->layer_first) {
89 layout->layer_size = align64(layout->size, 4096);
90 layout->size = layout->layer_size * array_size;
91 }
92 }
93