1 /*
2  * Copyright 2012 Advanced Micro Devices, Inc.
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 DEALINGS
21  * IN THE SOFTWARE.
22  */
23 
24 #ifndef AC_SHADER_UTIL_H
25 #define AC_SHADER_UTIL_H
26 
27 #include "ac_binary.h"
28 #include "amd_family.h"
29 #include "compiler/nir/nir.h"
30 
31 #include <stdbool.h>
32 #include <stdint.h>
33 
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
37 
38 enum ac_image_dim
39 {
40    ac_image_1d,
41    ac_image_2d,
42    ac_image_3d,
43    ac_image_cube, // includes cube arrays
44    ac_image_1darray,
45    ac_image_2darray,
46    ac_image_2dmsaa,
47    ac_image_2darraymsaa,
48 };
49 
50 struct ac_data_format_info {
51    uint8_t element_size;
52    uint8_t num_channels;
53    uint8_t chan_byte_size;
54    uint8_t chan_format;
55 };
56 
57 struct ac_spi_color_formats {
58    unsigned normal : 8;
59    unsigned alpha : 8;
60    unsigned blend : 8;
61    unsigned blend_alpha : 8;
62 };
63 
64 /* For ac_build_fetch_format.
65  *
66  * Note: FLOAT must be 0 (used for convenience of encoding in radeonsi).
67  */
68 enum ac_fetch_format
69 {
70    AC_FETCH_FORMAT_FLOAT = 0,
71    AC_FETCH_FORMAT_FIXED,
72    AC_FETCH_FORMAT_UNORM,
73    AC_FETCH_FORMAT_SNORM,
74    AC_FETCH_FORMAT_USCALED,
75    AC_FETCH_FORMAT_SSCALED,
76    AC_FETCH_FORMAT_UINT,
77    AC_FETCH_FORMAT_SINT,
78    AC_FETCH_FORMAT_NONE,
79 };
80 
81 unsigned ac_get_spi_shader_z_format(bool writes_z, bool writes_stencil, bool writes_samplemask);
82 
83 unsigned ac_get_cb_shader_mask(unsigned spi_shader_col_format);
84 
85 uint32_t ac_vgt_gs_mode(unsigned gs_max_vert_out, enum chip_class chip_class);
86 
87 unsigned ac_get_tbuffer_format(enum chip_class chip_class, unsigned dfmt, unsigned nfmt);
88 
89 const struct ac_data_format_info *ac_get_data_format_info(unsigned dfmt);
90 
91 enum ac_image_dim ac_get_sampler_dim(enum chip_class chip_class, enum glsl_sampler_dim dim,
92                                      bool is_array);
93 
94 enum ac_image_dim ac_get_image_dim(enum chip_class chip_class, enum glsl_sampler_dim sdim,
95                                    bool is_array);
96 
97 unsigned ac_get_fs_input_vgpr_cnt(const struct ac_shader_config *config,
98                                   signed char *face_vgpr_index, signed char *ancillary_vgpr_index);
99 
100 void ac_choose_spi_color_formats(unsigned format, unsigned swap, unsigned ntype, bool is_depth,
101                                  struct ac_spi_color_formats *formats);
102 
103 #ifdef __cplusplus
104 }
105 #endif
106 
107 #endif
108