1 /*
2 * Copyright 2020 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 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24 #ifndef ZINK_FORMAT_H
25 #define ZINK_FORMAT_H
26
27 #include "util/format/u_formats.h"
28 #include "util/format/u_format.h"
29
30 #include <stdbool.h>
31 #include <vulkan/vulkan_core.h>
32
33 union pipe_color_union;
34
35 enum pipe_format
36 zink_decompose_vertex_format(enum pipe_format format);
37
38 bool
39 zink_format_is_voidable_rgba_variant(enum pipe_format format);
40 bool
41 zink_format_is_red_alpha(enum pipe_format format);
42 bool
43 zink_format_is_emulated_alpha(enum pipe_format format);
44 enum pipe_format
45 zink_format_get_emulated_alpha(enum pipe_format format);
46 void
47 zink_format_clamp_channel_color(const struct util_format_description *desc, union pipe_color_union *dst, const union pipe_color_union *src, unsigned i);
48 void
49 zink_format_clamp_channel_srgb(const struct util_format_description *desc, union pipe_color_union *dst, const union pipe_color_union *src, unsigned i);
50
51 static inline bool
zink_format_needs_mutable(enum pipe_format a,enum pipe_format b)52 zink_format_needs_mutable(enum pipe_format a, enum pipe_format b)
53 {
54 if (a == b)
55 return false;
56 if (util_format_is_srgb(a))
57 return util_format_linear(a) != b;
58 if (util_format_is_srgb(b))
59 return util_format_linear(b) != a;
60 return true;
61 }
62 #endif
63