1/*
2 * Copyright (C) 2021 Collabora Ltd.
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
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24#include "util/macros.h"
25#include "compiler/shader_enums.h"
26
27#include "pan_cs.h"
28#include "pan_pool.h"
29
30#include "panvk_cs.h"
31#include "panvk_private.h"
32
33/*
34 * Upload the viewport scale. Defined as (px/2, py/2, pz) at the start of section
35 * 24.5 ("Controlling the Viewport") of the Vulkan spec. At the end of the
36 * section, the spec defines:
37 *
38 * px = width
39 * py = height
40 * pz = maxDepth - minDepth
41 */
42void
43panvk_sysval_upload_viewport_scale(const VkViewport *viewport,
44                                   union panvk_sysval_vec4 *data)
45{
46   data->f32[0] = 0.5f * viewport->width;
47   data->f32[1] = 0.5f * viewport->height;
48   data->f32[2] = (viewport->maxDepth - viewport->minDepth);
49}
50
51/*
52 * Upload the viewport offset. Defined as (ox, oy, oz) at the start of section
53 * 24.5 ("Controlling the Viewport") of the Vulkan spec. At the end of the
54 * section, the spec defines:
55 *
56 * ox = x + width/2
57 * oy = y + height/2
58 * oz = minDepth
59 */
60void
61panvk_sysval_upload_viewport_offset(const VkViewport *viewport,
62                                    union panvk_sysval_vec4 *data)
63{
64   data->f32[0] = (0.5f * viewport->width) + viewport->x;
65   data->f32[1] = (0.5f * viewport->height) + viewport->y;
66   data->f32[2] = viewport->minDepth;
67}
68