1 /*
2 * Copyright © 2018 Intel 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 * 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 NIR_XFB_INFO_H
25 #define NIR_XFB_INFO_H
26
27 #include "nir.h"
28
29 #ifdef __cplusplus
30 extern "C" {
31 #endif
32
33 #define NIR_MAX_XFB_BUFFERS 4
34 #define NIR_MAX_XFB_STREAMS 4
35
36 typedef struct {
37 uint16_t stride;
38 uint16_t varying_count;
39 } nir_xfb_buffer_info;
40
41 typedef struct {
42 uint8_t buffer;
43 uint16_t offset;
44 uint8_t location;
45 uint8_t component_mask;
46 uint8_t component_offset;
47 } nir_xfb_output_info;
48
49 typedef struct {
50 const struct glsl_type *type;
51 uint8_t buffer;
52 uint16_t offset;
53 } nir_xfb_varying_info;
54
55 typedef struct nir_xfb_info {
56 uint8_t buffers_written;
57 uint8_t streams_written;
58
59 nir_xfb_buffer_info buffers[NIR_MAX_XFB_BUFFERS];
60 uint8_t buffer_to_stream[NIR_MAX_XFB_BUFFERS];
61
62 uint16_t output_count;
63 nir_xfb_output_info outputs[0];
64 } nir_xfb_info;
65
66 typedef struct nir_xfb_varyings_info {
67 uint16_t varying_count;
68 nir_xfb_varying_info varyings[0];
69 } nir_xfb_varyings_info;
70
71 static inline size_t
nir_xfb_info_size(uint16_t output_count)72 nir_xfb_info_size(uint16_t output_count)
73 {
74 return sizeof(nir_xfb_info) + sizeof(nir_xfb_output_info) * output_count;
75 }
76
77 void nir_shader_gather_xfb_info(nir_shader *shader);
78
79 void
80 nir_gather_xfb_info_with_varyings(nir_shader *shader,
81 void *mem_ctx,
82 nir_xfb_varyings_info **varyings_info);
83
84 nir_xfb_info *
85 nir_gather_xfb_info_from_intrinsics(nir_shader *nir,
86 int slot_to_register[NUM_TOTAL_VARYING_SLOTS]);
87
88 void
89 nir_print_xfb_info(nir_xfb_info *info, FILE *fp);
90
91 #ifdef __cplusplus
92 } /* extern "C" */
93 #endif
94
95 #endif /* NIR_XFB_INFO_H */
96