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// use std::fmt;
/// Memory object wrapper.
/// Contains size and properties of the memory.
#[derive(Debug)]
pub struct Memory<B: gfx_hal::Backend> {
raw: B::Memory,
size: u64,
properties: gfx_hal::memory::Properties,
non_coherent_atom_size: u64,
relevant: relevant::Relevant,
}
impl<B> Memory<B>
where
B: gfx_hal::Backend,
{
/// Get memory properties.
pub fn properties(&self) -> gfx_hal::memory::Properties {
self.properties
}
/// Get memory size.
pub fn size(&self) -> u64 {
self.size
}
/// Get raw memory.
pub fn raw(&self) -> &B::Memory {
&self.raw
}
/// Get raw memory mutably.
pub fn raw_mut(&mut self) -> &mut B::Memory {
&mut self.raw
}
/// Unwrap raw memory.
pub fn into_raw(self) -> B::Memory {
self.relevant.dispose();
self.raw
}
pub(crate) fn non_coherent_atom_size(&self) -> u64 {
debug_assert!(
self.host_visible() && !self.host_coherent(),
"Irrelevent and shouldn't be called",
);
self.non_coherent_atom_size
}
/// Create memory from raw object.
///
/// # Safety
///
/// TODO:
pub unsafe fn from_raw(
raw: B::Memory,
size: u64,
properties: gfx_hal::memory::Properties,
non_coherent_atom_size: u64,
) -> Self {
Memory {
properties,
raw,
size,
non_coherent_atom_size,
relevant: relevant::Relevant,
}
}
/// Check if this memory is host-visible and can be mapped.
/// `memory.host_visible()` is equivalent to `memory.properties().contains(Properties::CPU_VISIBLE)`
pub fn host_visible(&self) -> bool {
self.properties
.contains(gfx_hal::memory::Properties::CPU_VISIBLE)
}
/// Check if this memory is host-coherent and doesn't require invalidating or flushing.
/// `memory.host_coherent()` is equivalent to `memory.properties().contains(Properties::COHERENT)`
pub fn host_coherent(&self) -> bool {
self.properties
.contains(gfx_hal::memory::Properties::COHERENT)
}
}
// pub(crate) fn memory_ptr_fmt(
// memory: &*const Memory,
// fmt: &mut fmt::Formatter<'_>,
// ) -> Result<(), fmt::Error> {
// unsafe {
// if fmt.alternate() {
// write!(fmt, "*const {:#?}", **memory)
// } else {
// write!(fmt, "*const {:?}", **memory)
// }
// }
// }
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