1/*
2 * Copyright (C) 2018 Rob Clark <robclark@freedesktop.org>
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 FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 *    Rob Clark <robclark@freedesktop.org>
25 */
26
27#include "fd5_resource.h"
28
29static void
30setup_lrz(struct fd_resource *rsc)
31{
32   struct fd_screen *screen = fd_screen(rsc->b.b.screen);
33   unsigned lrz_pitch = align(DIV_ROUND_UP(rsc->b.b.width0, 8), 64);
34   unsigned lrz_height = DIV_ROUND_UP(rsc->b.b.height0, 8);
35
36   /* LRZ buffer is super-sampled: */
37   switch (rsc->b.b.nr_samples) {
38   case 4:
39      lrz_pitch *= 2;
40      FALLTHROUGH;
41   case 2:
42      lrz_height *= 2;
43   }
44
45   unsigned size = lrz_pitch * lrz_height * 2;
46
47   size += 0x1000; /* for GRAS_LRZ_FAST_CLEAR_BUFFER */
48
49   rsc->lrz_height = lrz_height;
50   rsc->lrz_width = lrz_pitch;
51   rsc->lrz_pitch = lrz_pitch;
52   rsc->lrz = fd_bo_new(screen->dev, size, FD_BO_NOMAP, "lrz");
53}
54
55uint32_t
56fd5_setup_slices(struct fd_resource *rsc)
57{
58   struct pipe_resource *prsc = &rsc->b.b;
59
60   if (FD_DBG(LRZ) && has_depth(rsc->b.b.format))
61      setup_lrz(rsc);
62
63   fdl5_layout(&rsc->layout, prsc->format, fd_resource_nr_samples(prsc),
64               prsc->width0, prsc->height0, prsc->depth0, prsc->last_level + 1,
65               prsc->array_size, prsc->target == PIPE_TEXTURE_3D);
66
67   return rsc->layout.size;
68}
69