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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/****************************************************************************
* Copyright (C) 2015 Intel Corporation. All Rights Reserved.
*
* 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.
***************************************************************************/
#include "pipe/p_screen.h"
#include "util/u_memory.h"
#include "util/os_time.h"
#include "swr_context.h"
#include "swr_screen.h"
#include "swr_fence.h"
#ifdef __APPLE__
#include <sched.h>
#endif
#if defined(PIPE_CC_MSVC) // portable thread yield
#define sched_yield SwitchToThread
#endif
/*
* Fence callback, called by back-end thread on completion of all rendering up
* to SwrSync call.
*/
static void
swr_fence_cb(uint64_t userData, uint64_t userData2, uint64_t userData3)
{
struct swr_fence *fence = (struct swr_fence *)userData;
/* Complete all work attached to the fence */
swr_fence_do_work(fence);
/* Correct value is in SwrSync data, and not the fence write field. */
/* Contexts may not finish in order, but fence value always increases */
if (fence->read < userData2)
fence->read = userData2;
}
/*
* Submit an existing fence.
*/
void
swr_fence_submit(struct swr_context *ctx, struct pipe_fence_handle *fh)
{
struct swr_fence *fence = swr_fence(fh);
fence->write++;
fence->pending = TRUE;
ctx->api.pfnSwrSync(ctx->swrContext, swr_fence_cb, (uint64_t)fence, fence->write, 0);
}
/*
* Create a new fence object.
*/
struct pipe_fence_handle *
swr_fence_create()
{
static int fence_id = 0;
struct swr_fence *fence = CALLOC_STRUCT(swr_fence);
if (!fence)
return NULL;
pipe_reference_init(&fence->reference, 1);
fence->id = fence_id++;
fence->work.tail = &fence->work.head;
return (struct pipe_fence_handle *)fence;
}
/** Destroy a fence. Called when refcount hits zero. */
static void
swr_fence_destroy(struct swr_fence *fence)
{
/* Complete any work left if fence was not submitted */
swr_fence_do_work(fence);
FREE(fence);
}
/**
* Set ptr = fence, with reference counting
*/
void
swr_fence_reference(struct pipe_screen *screen,
struct pipe_fence_handle **ptr,
struct pipe_fence_handle *f)
{
struct swr_fence *fence = swr_fence(f);
struct swr_fence *old;
if (likely(ptr)) {
old = swr_fence(*ptr);
*ptr = f;
} else {
old = NULL;
}
if (pipe_reference(&old->reference, &fence->reference)) {
swr_fence_finish(screen, NULL, (struct pipe_fence_handle *) old, 0);
swr_fence_destroy(old);
}
}
/*
* Wait for the fence to finish.
*/
boolean
swr_fence_finish(struct pipe_screen *screen,
struct pipe_context *ctx,
struct pipe_fence_handle *fence_handle,
uint64_t timeout)
{
while (!swr_is_fence_done(fence_handle))
sched_yield();
swr_fence(fence_handle)->pending = FALSE;
return TRUE;
}
uint64_t
swr_get_timestamp(struct pipe_screen *screen)
{
return os_time_get_nano();
}
void
swr_fence_init(struct pipe_screen *p_screen)
{
p_screen->fence_reference = swr_fence_reference;
p_screen->fence_finish = swr_fence_finish;
p_screen->get_timestamp = swr_get_timestamp;
/* Create persistant StoreTiles "flush" fence, used to signal completion
* of flushing tile state back to resource texture, via StoreTiles. */
struct swr_screen *screen = swr_screen(p_screen);
screen->flush_fence = swr_fence_create();
}
|
