#[repr(u32)]
pub enum LoadOp {
    Load,
    Clear,
    DontCare,
}
Expand description

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

Variants

Load

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

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.

See the draw_inline and draw_secondary methods of PrimaryComputeBufferBuilder.

DontCare

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

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more
Feeds this value into the given Hasher. Read more
Feeds a slice of this type into the given Hasher. Read more
This method tests for self and other values to be equal, and is used by ==. Read more
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
Builds a pointer to this type from a raw pointer.
Returns true if the size is suitable to store a type like this.
Returns the size of an individual element.

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.