1 /*
2 * Copyright (C) 2021 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
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 #ifndef PANVK_VARYINGS_H
25 #define PANVK_VARYINGS_H
26
27 #include "util/bitset.h"
28 #include "util/format/u_format.h"
29
30 #include "compiler/shader_enums.h"
31 #include "panfrost-job.h"
32
33 #include "pan_pool.h"
34
35 struct pan_pool;
36 struct panvk_device;
37
38 enum panvk_varying_buf_id {
39 PANVK_VARY_BUF_GENERAL,
40 PANVK_VARY_BUF_POSITION,
41 PANVK_VARY_BUF_PSIZ,
42
43 /* Keep last */
44 PANVK_VARY_BUF_MAX,
45 };
46
47 struct panvk_varying {
48 unsigned buf;
49 unsigned offset;
50 enum pipe_format format;
51 };
52
53 struct panvk_varying_buf {
54 mali_ptr address;
55 void *cpu;
56 unsigned stride;
57 unsigned size;
58 };
59
60 struct panvk_varyings_info {
61 struct panvk_varying varying[VARYING_SLOT_MAX];
62 BITSET_DECLARE(active, VARYING_SLOT_MAX);
63 struct panvk_varying_buf buf[VARYING_SLOT_MAX];
64 struct {
65 unsigned count;
66 gl_varying_slot loc[VARYING_SLOT_MAX];
67 } stage[MESA_SHADER_STAGES];
68 unsigned buf_mask;
69 };
70
71 static inline unsigned
panvk_varying_buf_index(const struct panvk_varyings_info * varyings,enum panvk_varying_buf_id b)72 panvk_varying_buf_index(const struct panvk_varyings_info *varyings,
73 enum panvk_varying_buf_id b)
74 {
75 return util_bitcount(varyings->buf_mask & BITFIELD_MASK(b));
76 }
77
78 static inline enum panvk_varying_buf_id
panvk_varying_buf_id(gl_varying_slot loc)79 panvk_varying_buf_id(gl_varying_slot loc)
80 {
81 switch (loc) {
82 case VARYING_SLOT_POS:
83 return PANVK_VARY_BUF_POSITION;
84 case VARYING_SLOT_PSIZ:
85 return PANVK_VARY_BUF_PSIZ;
86 default:
87 return PANVK_VARY_BUF_GENERAL;
88 }
89 }
90
91 static inline unsigned
panvk_varying_size(const struct panvk_varyings_info * varyings,gl_varying_slot loc)92 panvk_varying_size(const struct panvk_varyings_info *varyings,
93 gl_varying_slot loc)
94 {
95 switch (loc) {
96 case VARYING_SLOT_POS:
97 return sizeof(float) * 4;
98 case VARYING_SLOT_PSIZ:
99 return sizeof(uint16_t);
100 default:
101 return util_format_get_blocksize(varyings->varying[loc].format);
102 }
103 }
104
105 static inline unsigned
panvk_varyings_buf_count(struct panvk_varyings_info * varyings)106 panvk_varyings_buf_count(struct panvk_varyings_info *varyings)
107 {
108 return util_bitcount(varyings->buf_mask);
109 }
110
111 static inline void
panvk_varyings_alloc(struct panvk_varyings_info * varyings,struct pan_pool * varying_mem_pool,unsigned vertex_count)112 panvk_varyings_alloc(struct panvk_varyings_info *varyings,
113 struct pan_pool *varying_mem_pool,
114 unsigned vertex_count)
115 {
116 for (unsigned i = 0; i < PANVK_VARY_BUF_MAX; i++) {
117 if (!(varyings->buf_mask & (1 << i))) continue;
118
119 unsigned buf_idx = panvk_varying_buf_index(varyings, i);
120 unsigned size = varyings->buf[buf_idx].stride * vertex_count;
121 if (!size)
122 continue;
123
124 struct panfrost_ptr ptr =
125 pan_pool_alloc_aligned(varying_mem_pool, size, 64);
126
127 varyings->buf[buf_idx].size = size;
128 varyings->buf[buf_idx].address = ptr.gpu;
129 varyings->buf[buf_idx].cpu = ptr.cpu;
130 }
131 }
132
133 #endif
134