1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* Copyright (C) 2019 Collabora, Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors (Collabora):
* Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
*
*/
#include <assert.h>
#include "util/u_math.h"
#include "pan_encoder.h"
/* Compute shaders are invoked with a gl_NumWorkGroups X/Y/Z triplet. Vertex
* shaders, it turns out, are invoked with the same mechanism, with the triplet
* (1, vertex_count, instance_count).
*
* Alongside this triplet is the gl_WorkGroupSize X/Y/Z triplet.
*
* Unfortunately, the packing for these triplet into the
* mali_vertex_tiler_prefix is a little funky, using a dynamic bitfield. The
* routines here exist to pack this */
void
panfrost_pack_work_groups_compute(
struct mali_vertex_tiler_prefix *out,
unsigned num_x,
unsigned num_y,
unsigned num_z,
unsigned size_x,
unsigned size_y,
unsigned size_z,
bool quirk_graphics)
{
/* First of all, all 6 values are off-by-one (strictly positive).
* Account for that, first by ensuring all values are strictly positive
* and then by offsetting */
assert(num_x > 0);
assert(num_y > 0);
assert(num_z > 0);
assert(size_x > 0);
assert(size_y > 0);
assert(size_z > 0);
num_x = MALI_POSITIVE(num_x);
num_y = MALI_POSITIVE(num_y);
num_z = MALI_POSITIVE(num_z);
size_x = MALI_POSITIVE(size_x);
size_y = MALI_POSITIVE(size_y);
size_z = MALI_POSITIVE(size_z);
/* Next up is to pack in order */
uint32_t packed = 0;
/* The values needing packing, in order, and the corresponding shifts.
* Indicies into shift are off-by-one to make the logic easier */
unsigned shifts[7] = { 0 };
unsigned values[6] = { size_x, size_y, size_z, num_x, num_y, num_z };
for (unsigned i = 0; i < 6; ++i) {
/* OR it in, shifting as required */
packed |= (values[i] << shifts[i]);
/* How many bits did we use? */
unsigned bit_count = util_logbase2_ceil(values[i] + 1);
/* Set the next shift accordingly */
shifts[i + 1] = shifts[i] + bit_count;
}
/* We're packed, so upload everything */
out->invocation_count = packed;
out->size_y_shift = shifts[1];
out->size_z_shift = shifts[2];
out->workgroups_x_shift = shifts[3];
out->workgroups_y_shift = shifts[4];
out->workgroups_z_shift = shifts[5];
/* Quirk: for non-instanced graphics, the blob sets workgroups_z_shift
* = 32. This doesn't appear to matter to the hardware, but it's good
* to be bit-identical. */
if (quirk_graphics && (num_z <= 1))
out->workgroups_z_shift = 32;
/* Special fields */
out->workgroups_x_shift_2 = MAX2(out->workgroups_x_shift, 2);
out->workgroups_x_shift_3 = out->workgroups_x_shift_2;
}
/* Packs vertex/tiler descriptors simultaneously */
void
panfrost_pack_work_groups_fused(
struct mali_vertex_tiler_prefix *vertex,
struct mali_vertex_tiler_prefix *tiler,
unsigned num_x,
unsigned num_y,
unsigned num_z,
unsigned size_x,
unsigned size_y,
unsigned size_z)
{
panfrost_pack_work_groups_compute(vertex, num_x, num_y, num_z, size_x, size_y, size_z, true);
/* Copy results over */
tiler->invocation_count = vertex->invocation_count;
tiler->size_y_shift = vertex->size_y_shift;
tiler->size_z_shift = vertex->size_z_shift;
tiler->workgroups_x_shift = vertex->workgroups_x_shift;
tiler->workgroups_x_shift_2 = vertex->workgroups_x_shift_2;
tiler->workgroups_y_shift = vertex->workgroups_y_shift;
tiler->workgroups_z_shift = vertex->workgroups_z_shift;
/* Set special fields for each */
vertex->workgroups_x_shift_3 = 5;
tiler->workgroups_x_shift_3 = 6;
}
|
