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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
# 📒 gpu-allocator
[](https://github.com/Traverse-Research/gpu-allocator/actions)
[](https://crates.io/crates/gpu-allocator)
[](https://docs.rs/gpu-allocator/)
[](LICENSE-MIT)
[](LICENSE-APACHE)
[](../main/CODE_OF_CONDUCT.md)
[](https://blog.rust-lang.org/2023/06/01/Rust-1.70.0.html)
[](https://traverseresearch.nl)
```toml
[dependencies]
gpu-allocator = "0.27.0"
```
This crate provides a fully written in Rust memory allocator for Vulkan, DirectX 12 and Metal.
## [Windows-rs] and [winapi]
`gpu-allocator` recently migrated from [winapi] to [windows-rs] but still provides convenient helpers to convert to and from [winapi] types, enabled when compiling with the `public-winapi` crate feature.
[Windows-rs]: https://github.com/microsoft/windows-rs
[winapi]: https://github.com/retep998/winapi-rs
## Setting up the Vulkan memory allocator
```rust
use gpu_allocator::vulkan::*;
let mut allocator = Allocator::new(&AllocatorCreateDesc {
instance,
device,
physical_device,
debug_settings: Default::default(),
buffer_device_address: true, // Ideally, check the BufferDeviceAddressFeatures struct.
allocation_sizes: Default::default(),
});
```
## Simple Vulkan allocation example
```rust
use gpu_allocator::vulkan::*;
use gpu_allocator::MemoryLocation;
// Setup vulkan info
let vk_info = vk::BufferCreateInfo::default()
.size(512)
.usage(vk::BufferUsageFlags::STORAGE_BUFFER);
let buffer = unsafe { device.create_buffer(&vk_info, None) }.unwrap();
let requirements = unsafe { device.get_buffer_memory_requirements(buffer) };
let allocation = allocator
.allocate(&AllocationCreateDesc {
name: "Example allocation",
requirements,
location: MemoryLocation::CpuToGpu,
linear: true, // Buffers are always linear
allocation_scheme: AllocationScheme::GpuAllocatorManaged,
}).unwrap();
// Bind memory to the buffer
unsafe { device.bind_buffer_memory(buffer, allocation.memory(), allocation.offset()).unwrap() };
// Cleanup
allocator.free(allocation).unwrap();
unsafe { device.destroy_buffer(buffer, None) };
```
## Setting up the D3D12 memory allocator
```rust
use gpu_allocator::d3d12::*;
let mut allocator = Allocator::new(&AllocatorCreateDesc {
device: ID3D12DeviceVersion::Device(device),
debug_settings: Default::default(),
allocation_sizes: Default::default(),
});
```
## Simple d3d12 allocation example
```rust
use gpu_allocator::d3d12::*;
use gpu_allocator::MemoryLocation;
let buffer_desc = Direct3D12::D3D12_RESOURCE_DESC {
Dimension: Direct3D12::D3D12_RESOURCE_DIMENSION_BUFFER,
Alignment: 0,
Width: 512,
Height: 1,
DepthOrArraySize: 1,
MipLevels: 1,
Format: Dxgi::Common::DXGI_FORMAT_UNKNOWN,
SampleDesc: Dxgi::Common::DXGI_SAMPLE_DESC {
Count: 1,
Quality: 0,
},
Layout: Direct3D12::D3D12_TEXTURE_LAYOUT_ROW_MAJOR,
Flags: Direct3D12::D3D12_RESOURCE_FLAG_NONE,
};
let allocation_desc = AllocationCreateDesc::from_d3d12_resource_desc(
&allocator.device(),
&buffer_desc,
"Example allocation",
MemoryLocation::GpuOnly,
);
let allocation = allocator.allocate(&allocation_desc).unwrap();
let mut resource: Option<Direct3D12::ID3D12Resource> = None;
let hr = unsafe {
device.CreatePlacedResource(
allocation.heap(),
allocation.offset(),
&buffer_desc,
Direct3D12::D3D12_RESOURCE_STATE_COMMON,
None,
&mut resource,
)
}?;
// Cleanup
drop(resource);
allocator.free(allocation).unwrap();
```
## Setting up the Metal memory allocator
```rust
use gpu_allocator::metal::*;
let mut allocator = Allocator::new(&AllocatorCreateDesc {
device: device.clone(),
debug_settings: Default::default(),
allocation_sizes: Default::default(),
});
```
## Simple Metal allocation example
```rust
use gpu_allocator::metal::*;
use gpu_allocator::MemoryLocation;
let allocation_desc = AllocationCreateDesc::buffer(
&device,
"Example allocation",
512, // size in bytes
gpu_allocator::MemoryLocation::GpuOnly,
);
let allocation = allocator.allocate(&allocation_desc).unwrap();
let resource = allocation.make_buffer().unwrap();
// Cleanup
drop(resource);
allocator.free(&allocation).unwrap();
```
## Minimum Supported Rust Version
The MSRV for this crate and the `vulkan`, `d3d12` and `metal` features is Rust 1.70. Any other features such as the `visualizer` (with all the `egui` dependencies) may have a higher requirement and are not tested in our CI.
## License
Licensed under either of
- Apache License, Version 2.0, ([LICENSE-APACHE](../master/LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license ([LICENSE-MIT](../master/LICENSE-MIT) or http://opensource.org/licenses/MIT)
at your option.
## Alternative libraries
- [vk-mem-rs](https://github.com/gwihlidal/vk-mem-rs)
## Contribution
Unless you explicitly state otherwise, any contribution intentionally
submitted for inclusion in the work by you, as defined in the Apache-2.0
license, shall be dual licensed as above, without any additional terms or
conditions.
|
