Enum gfx::Usage

#[repr(u8)]
pub enum Usage {
    GpuOnly,
    Const,
    Dynamic,
    CpuOnly(MapAccess),
}

A hint as to how this buffer/texture will be used.

The nature of these hints make them very implementation specific. Different drivers on different hardware will handle them differently. Only careful profiling will tell which is the best to use for a specific buffer.

Variants

GpuOnly

GPU: read + write, CPU: copy. Optimal for render targets.

Const

GPU: read, CPU: none. Optimal for resourced textures/buffers.

Dynamic

GPU: read, CPU: write.

CpuOnly(MapAccess)

GPU: copy, CPU: as specified. Used as a staging buffer, to be copied back and forth with on-GPU targets.

Trait Implementations

impl Copy for Usage

impl Eq for Usage

impl PartialEq<Usage> for Usage

fn eq(&self, __arg_0: &Usage) -> bool

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

fn ne(&self, __arg_0: &Usage) -> bool

This method tests for !=.

impl Hash for Usage

fn hash<__H>(&self, __arg_0: &mut __H) where
    __H: Hasher, 

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl PartialOrd<Usage> for Usage

fn partial_cmp(&self, __arg_0: &Usage) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, __arg_0: &Usage) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, __arg_0: &Usage) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, __arg_0: &Usage) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, __arg_0: &Usage) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Debug for Usage

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl Clone for Usage

fn clone(&self) -> Usage

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Ord for Usage

fn cmp(&self, __arg_0: &Usage) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.