1 /*
2  * Copyright (C) 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  * 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 (Collabora):
24  *      Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
25  */
26 
27 #ifndef __PAN_LOWER_FRAMEBUFFER_H
28 #define __PAN_LOWER_FRAMEBUFFER_H
29 
30 #include "compiler/nir/nir.h"
31 #include "util/format/u_format.h"
32 
33 /* NATIVE formats can use a typed load/store. PACK formats cannot but can use a
34  * typed pack/unpack instruction. SOFTWARE formats are lowered */
35 
36 enum pan_format_class {
37         PAN_FORMAT_NATIVE,
38         PAN_FORMAT_PACK,
39         PAN_FORMAT_SOFTWARE
40 };
41 
42 nir_alu_type pan_unpacked_type_for_format(const struct util_format_description *desc);
43 enum pan_format_class pan_format_class_load(const struct util_format_description *desc, unsigned quirks);
44 enum pan_format_class pan_format_class_store(const struct util_format_description *desc, unsigned quirks);
45 
46 bool pan_lower_framebuffer(nir_shader *shader, const enum pipe_format *rt_fmts,
47                            bool is_blend, unsigned quirks);
48 
49 #endif
50