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
#[cfg(feature = "rafx-metal")]
use crate::metal::RafxSemaphoreMetal;
#[cfg(feature = "rafx-vulkan")]
use crate::vulkan::RafxSemaphoreVulkan;
/// A GPU -> GPU synchronization mechanism.
///
/// A semaphore is either "signalled" or "unsignalled". Only the GPU can read or write this status.
///
/// Semaphores can be used to queue multiple dependent units of work to the GPU where one unit of
/// work cannot start until another unit of work completes.
///
/// Semaphores must not be dropped if they are in use by the GPU.
pub enum RafxSemaphore {
#[cfg(feature = "rafx-vulkan")]
Vk(RafxSemaphoreVulkan),
#[cfg(feature = "rafx-metal")]
Metal(RafxSemaphoreMetal),
}
impl RafxSemaphore {
/// Get the underlying vulkan API object. This provides access to any internally created
/// vulkan objects.
#[cfg(feature = "rafx-vulkan")]
pub fn vk_semaphore(&self) -> Option<&RafxSemaphoreVulkan> {
match self {
#[cfg(feature = "rafx-vulkan")]
RafxSemaphore::Vk(inner) => Some(inner),
#[cfg(feature = "rafx-metal")]
RafxSemaphore::Metal(_) => None,
}
}
/// Get the underlying metal API object. This provides access to any internally created
/// metal objects.
#[cfg(feature = "rafx-metal")]
pub fn metal_semaphore(&self) -> Option<&RafxSemaphoreMetal> {
match self {
#[cfg(feature = "rafx-vulkan")]
RafxSemaphore::Vk(_) => None,
#[cfg(feature = "rafx-metal")]
RafxSemaphore::Metal(inner) => Some(inner),
}
}
}