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1  /*
2   * Copyright 2019 Valve Corporation
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 AC_SHADER_ARGS_H
25  #define AC_SHADER_ARGS_H
26  
27  #include <stdbool.h>
28  #include <stdint.h>
29  
30  #define AC_MAX_INLINE_PUSH_CONSTS 8
31  
32  enum ac_arg_regfile
33  {
34     AC_ARG_SGPR,
35     AC_ARG_VGPR,
36  };
37  
38  enum ac_arg_type
39  {
40     AC_ARG_FLOAT,
41     AC_ARG_INT,
42     AC_ARG_CONST_PTR,       /* Pointer to i8 array */
43     AC_ARG_CONST_FLOAT_PTR, /* Pointer to f32 array */
44     AC_ARG_CONST_PTR_PTR,   /* Pointer to pointer to i8 array */
45     AC_ARG_CONST_DESC_PTR,  /* Pointer to v4i32 array */
46     AC_ARG_CONST_IMAGE_PTR, /* Pointer to v8i32 array */
47  };
48  
49  struct ac_arg {
50     uint8_t arg_index;
51     bool used;
52  };
53  
54  #define AC_MAX_ARGS 128
55  
56  struct ac_shader_args {
57     /* Info on how to declare arguments */
58     struct {
59        enum ac_arg_type type;
60        enum ac_arg_regfile file;
61        uint8_t offset;
62        uint8_t size;
63        bool skip;
64     } args[AC_MAX_ARGS];
65  
66     uint8_t arg_count;
67     uint8_t sgpr_count;
68     uint8_t num_sgprs_used;
69     uint8_t num_vgprs_used;
70  
71     struct ac_arg base_vertex;
72     struct ac_arg start_instance;
73     struct ac_arg draw_id;
74     struct ac_arg vertex_id;
75     struct ac_arg instance_id;
76     struct ac_arg tcs_patch_id;
77     struct ac_arg tcs_rel_ids;
78     struct ac_arg tes_patch_id;
79     struct ac_arg gs_prim_id;
80     struct ac_arg gs_invocation_id;
81  
82     /* PS */
83     struct ac_arg frag_pos[4];
84     struct ac_arg front_face;
85     struct ac_arg ancillary;
86     struct ac_arg sample_coverage;
87     struct ac_arg prim_mask;
88     struct ac_arg persp_sample;
89     struct ac_arg persp_center;
90     struct ac_arg persp_centroid;
91     struct ac_arg pull_model;
92     struct ac_arg linear_sample;
93     struct ac_arg linear_center;
94     struct ac_arg linear_centroid;
95  
96     /* CS */
97     struct ac_arg local_invocation_ids;
98     struct ac_arg num_work_groups;
99     struct ac_arg workgroup_ids[3];
100     struct ac_arg tg_size;
101  
102     /* Vulkan only */
103     struct ac_arg push_constants;
104     struct ac_arg inline_push_consts[AC_MAX_INLINE_PUSH_CONSTS];
105     unsigned num_inline_push_consts;
106     unsigned base_inline_push_consts;
107     struct ac_arg view_index;
108  };
109  
110  void ac_add_arg(struct ac_shader_args *info, enum ac_arg_regfile regfile, unsigned registers,
111                  enum ac_arg_type type, struct ac_arg *arg);
112  
113  #endif
114