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Enum gfx_core::factory::Usage [−] [src]

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 Debug for Usage
[src]

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

Formats the value using the given formatter.

impl Clone for Usage
[src]

fn clone(&self) -> Usage

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)
1.0.0

Performs copy-assignment from source. Read more

impl Copy for Usage
[src]

impl Hash for Usage
[src]

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

Feeds this value into the state given, updating the hasher as necessary.

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher
1.3.0

Feeds a slice of this type into the state provided.

impl PartialOrd for Usage
[src]

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

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

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

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

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. Read more

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

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

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. Read more

impl PartialEq for Usage
[src]

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

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

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

This method tests for !=.

impl Ord for Usage
[src]

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

This method returns an Ordering between self and other. Read more

impl Eq for Usage
[src]