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
use super::ranges::is_overlapping_ranges;
use crate::{
buffer::BufferAccess,
device::{Device, DeviceOwned},
DeviceSize, VulkanObject,
};
use std::{error, fmt};
pub fn check_copy_buffer(
device: &Device,
source: &dyn BufferAccess,
destination: &dyn BufferAccess,
source_offset: DeviceSize,
destination_offset: DeviceSize,
size: DeviceSize,
) -> Result<(), CheckCopyBufferError> {
assert_eq!(
source.inner().buffer.device().internal_object(),
device.internal_object()
);
assert_eq!(
destination.inner().buffer.device().internal_object(),
device.internal_object()
);
if !source.inner().buffer.usage().transfer_source {
return Err(CheckCopyBufferError::SourceMissingTransferUsage);
}
if !destination.inner().buffer.usage().transfer_destination {
return Err(CheckCopyBufferError::DestinationMissingTransferUsage);
}
if source_offset + size > source.size() {
return Err(CheckCopyBufferError::SourceOutOfBounds);
}
if destination_offset + size > destination.size() {
return Err(CheckCopyBufferError::DestinationOutOfBounds);
}
if source.conflict_key() == destination.conflict_key()
&& is_overlapping_ranges(source_offset, size, destination_offset, size)
{
return Err(CheckCopyBufferError::OverlappingRanges);
}
Ok(())
}
#[derive(Debug, Copy, Clone)]
pub enum CheckCopyBufferError {
SourceMissingTransferUsage,
DestinationMissingTransferUsage,
OverlappingRanges,
SourceOutOfBounds,
DestinationOutOfBounds,
}
impl error::Error for CheckCopyBufferError {}
impl fmt::Display for CheckCopyBufferError {
#[inline]
fn fmt(&self, fmt: &mut fmt::Formatter) -> Result<(), fmt::Error> {
write!(
fmt,
"{}",
match *self {
CheckCopyBufferError::SourceMissingTransferUsage => {
"the source buffer is missing the transfer source usage"
}
CheckCopyBufferError::DestinationMissingTransferUsage => {
"the destination buffer is missing the transfer destination usage"
}
CheckCopyBufferError::OverlappingRanges =>
"the source and destination ranges are overlapping",
CheckCopyBufferError::SourceOutOfBounds => "the source range is out of bounds",
CheckCopyBufferError::DestinationOutOfBounds => {
"the destination range is out of bounds"
}
}
)
}
}