Enum BufferUsage 

pub enum BufferUsage {
    StreamDraw,
    StreamRead,
    StreamCopy,
    StaticDraw,
    StaticRead,
    StaticCopy,
    DynamicDraw,
    DynamicRead,
    DynamicCopy,
}

A hint for video driver that allows it to optimize buffer’s content for more efficient use.

Variants

StreamDraw

The buffer contents will be modified once and used at most a few times. The buffer contents are modified by the application, and used as the source for drawing and image specification commands.

StreamRead

The buffer contents will be modified once and used at most a few times. The buffer contents are modified by reading data from the GPU, and used to return that data when queried by the application.

StreamCopy

The buffer contents will be modified once and used at most a few times. The buffer contents are modified by the application, and used as the source for drawing and image specification commands.

StaticDraw

The buffer contents will be modified once and used many times. The buffer contents are modified by the application, and used as the source for drawing and image specification commands.

StaticRead

The buffer contents will be modified once and used many times. The buffer contents are modified by reading data from the GPU, and used to return that data when queried by the application.

StaticCopy

The buffer contents will be modified once and used many times. The buffer contents are modified by reading data from the GPU, and used as the source for drawing and image specification commands.

DynamicDraw

The buffer contents will be modified repeatedly and used many times. The buffer contents are modified by the application, and used as the source for drawing and image specification commands.

DynamicRead

The buffer contents will be modified repeatedly and used many times. The buffer contents are modified by reading data from the GPU, and used to return that data when queried by the application.

DynamicCopy

The buffer contents will be modified repeatedly and used many times. The buffer contents are modified by reading data from the GPU, and used as the source for drawing and image specification commands.

Trait Implementations

impl Clone for BufferUsage

fn clone(&self) -> BufferUsage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BufferUsage

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

Formats the value using the given formatter.

impl Hash for BufferUsage

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

where __H: Hasher,

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 BufferUsage

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl ToGlConstant for BufferUsage

fn into_gl(self) -> u32

impl Copy for BufferUsage

impl Eq for BufferUsage

impl StructuralPartialEq for BufferUsage