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|
use {
core::fmt::{self, Display},
gpu_alloc_types::{DeviceMapError, OutOfMemory},
};
/// Enumeration of possible errors that may occur during memory allocation.
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub enum AllocationError {
/// Backend reported that device memory has been exhausted.\
/// Deallocating device memory from the same heap may increase chance
/// that another allocation would succeed.
OutOfDeviceMemory,
/// Backend reported that host memory has been exhausted.\
/// Deallocating host memory may increase chance that another allocation would succeed.
OutOfHostMemory,
/// Allocation request cannot be fulfilled as no available memory types allowed
/// by `Request.memory_types` mask is compatible with `request.usage`.
NoCompatibleMemoryTypes,
/// Reached limit on allocated memory objects count.\
/// Deallocating device memory may increase chance that another allocation would succeed.
/// Especially dedicated memory blocks.
///
/// If this error is returned when memory heaps are far from exhausted
/// `Config` should be tweaked to allocate larger memory objects.
TooManyObjects,
}
impl From<OutOfMemory> for AllocationError {
fn from(err: OutOfMemory) -> Self {
match err {
OutOfMemory::OutOfDeviceMemory => AllocationError::OutOfDeviceMemory,
OutOfMemory::OutOfHostMemory => AllocationError::OutOfHostMemory,
}
}
}
impl Display for AllocationError {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
AllocationError::OutOfDeviceMemory => fmt.write_str("Device memory exhausted"),
AllocationError::OutOfHostMemory => fmt.write_str("Host memory exhausted"),
AllocationError::NoCompatibleMemoryTypes => fmt.write_str(
"No compatible memory types from requested types support requested usage",
),
AllocationError::TooManyObjects => {
fmt.write_str("Reached limit on allocated memory objects count")
}
}
}
}
#[cfg(feature = "std")]
impl std::error::Error for AllocationError {}
/// Enumeration of possible errors that may occur during memory mapping.
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub enum MapError {
/// Backend reported that device memory has been exhausted.\
/// Deallocating device memory from the same heap may increase chance
/// that another mapping would succeed.
OutOfDeviceMemory,
/// Backend reported that host memory has been exhausted.\
/// Deallocating host memory may increase chance that another mapping would succeed.
OutOfHostMemory,
/// Attempt to map memory block with non-host-visible memory type.\
/// Ensure to include `UsageFlags::HOST_ACCESS` into allocation request
/// when memory mapping is intended.
NonHostVisible,
/// Map failed for implementation specific reason.\
/// For Vulkan backend this includes failed attempt
/// to allocate large enough virtual address space.
MapFailed,
/// Mapping failed due to block being already mapped.
AlreadyMapped,
}
impl From<DeviceMapError> for MapError {
fn from(err: DeviceMapError) -> Self {
match err {
DeviceMapError::OutOfDeviceMemory => MapError::OutOfDeviceMemory,
DeviceMapError::OutOfHostMemory => MapError::OutOfHostMemory,
DeviceMapError::MapFailed => MapError::MapFailed,
}
}
}
impl From<OutOfMemory> for MapError {
fn from(err: OutOfMemory) -> Self {
match err {
OutOfMemory::OutOfDeviceMemory => MapError::OutOfDeviceMemory,
OutOfMemory::OutOfHostMemory => MapError::OutOfHostMemory,
}
}
}
impl Display for MapError {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
MapError::OutOfDeviceMemory => fmt.write_str("Device memory exhausted"),
MapError::OutOfHostMemory => fmt.write_str("Host memory exhausted"),
MapError::MapFailed => fmt.write_str("Failed to map memory object"),
MapError::NonHostVisible => fmt.write_str("Impossible to map non-host-visible memory"),
MapError::AlreadyMapped => fmt.write_str("Block is already mapped"),
}
}
}
#[cfg(feature = "std")]
impl std::error::Error for MapError {}
|
