Enum vulkano::render_pass::AttachmentLoadOp

#[non_exhaustive]
#[repr(i32)]
pub enum AttachmentLoadOp {
    Load = 0,
    Clear = 1,
    DontCare = 2,
}

Describes what the implementation should do with an attachment at the start of the subpass.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Load = 0

The content of the attachment will be loaded from memory. This is what you want if you want to draw over something existing.

While this is the most intuitive option, it is also the slowest because it uses a lot of memory bandwidth.

Clear = 1

The content of the attachment will be filled by the implementation with a uniform value that you must provide when you start drawing.

This is what you usually use at the start of a frame, in order to reset the content of the color, depth and/or stencil buffers.

DontCare = 2

The attachment will have undefined content.

This is what you should use for attachments that you intend to entirely cover with draw commands. If you are going to fill the attachment with a uniform value, it is better to use Clear instead.

Trait Implementations

impl Clone for AttachmentLoadOp

fn clone(&self) -> AttachmentLoadOp

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AttachmentLoadOp

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<AttachmentLoadOp> for AttachmentLoadOp

fn from(val: AttachmentLoadOp) -> Self

Converts to this type from the input type.

impl Hash for AttachmentLoadOp

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for AttachmentLoadOp

fn eq(&self, other: &AttachmentLoadOp) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<AttachmentLoadOp> for AttachmentLoadOp

type Error = ()

The type returned in the event of a conversion error.

fn try_from(val: AttachmentLoadOp) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for AttachmentLoadOp

impl Eq for AttachmentLoadOp

impl StructuralEq for AttachmentLoadOp

impl StructuralPartialEq for AttachmentLoadOp