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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 {}↩