1 /*
2 * Copyright © 2018 Rob Clark <[email protected]>
3 * SPDX-License-Identifier: MIT
4 *
5 * Authors:
6 * Rob Clark <[email protected]>
7 */
8
9 #include "fd5_resource.h"
10
11 static void
setup_lrz(struct fd_resource * rsc)12 setup_lrz(struct fd_resource *rsc)
13 {
14 struct fd_screen *screen = fd_screen(rsc->b.b.screen);
15 unsigned lrz_pitch = align(DIV_ROUND_UP(rsc->b.b.width0, 8), 64);
16 unsigned lrz_height = DIV_ROUND_UP(rsc->b.b.height0, 8);
17
18 /* LRZ buffer is super-sampled: */
19 switch (rsc->b.b.nr_samples) {
20 case 4:
21 lrz_pitch *= 2;
22 FALLTHROUGH;
23 case 2:
24 lrz_height *= 2;
25 }
26
27 unsigned size = lrz_pitch * lrz_height * 2;
28
29 size += 0x1000; /* for GRAS_LRZ_FAST_CLEAR_BUFFER */
30
31 rsc->lrz_height = lrz_height;
32 rsc->lrz_width = lrz_pitch;
33 rsc->lrz_pitch = lrz_pitch;
34 rsc->lrz = fd_bo_new(screen->dev, size, FD_BO_NOMAP, "lrz");
35 }
36
37 uint32_t
fd5_setup_slices(struct fd_resource * rsc)38 fd5_setup_slices(struct fd_resource *rsc)
39 {
40 struct pipe_resource *prsc = &rsc->b.b;
41
42 if (FD_DBG(LRZ) && has_depth(prsc->format) && !is_z32(prsc->format))
43 setup_lrz(rsc);
44
45 fdl5_layout(&rsc->layout, prsc->format, fd_resource_nr_samples(prsc),
46 prsc->width0, prsc->height0, prsc->depth0, prsc->last_level + 1,
47 prsc->array_size, prsc->target == PIPE_TEXTURE_3D);
48
49 return rsc->layout.size;
50 }
51