Enum Payload 

pub enum Payload<T: GpuSendable> {
    Cpu(T),
    Gpu(T::GpuRepr),
}

Generic payload that can carry either CPU data or a GPU representation.

Variants

Cpu(T)

Gpu(T::GpuRepr)

Implementations

impl<T: GpuSendable> Payload<T>

pub fn is_gpu(&self) -> bool

pub fn as_cpu(&self) -> Option<&T>

pub fn as_gpu(&self) -> Option<&T::GpuRepr>

impl Payload<DynamicImage>

pub fn dimensions(&self) -> (u32, u32)

Return image dimensions without forcing the caller to pattern match.

pub fn into_gpu( self, ctx: &GpuContextHandle, ) -> Result<(GpuImageHandle, u32, u32), GpuError>

Ensure this payload is resident on GPU; uploads if necessary and returns the handle and dimensions.

impl Payload<DynamicImage>

pub fn to_rgba_bytes( &self, ctx: Option<&GpuContextHandle>, ) -> Result<(Vec<u8>, u32, u32), GpuError>

Get RGBA8 bytes + dimensions, downloading from GPU if needed.

pub fn from_rgba_bytes( ctx: Option<&GpuContextHandle>, bytes: Vec<u8>, w: u32, h: u32, ) -> Result<Self, GpuError>

Construct a payload from RGBA8 bytes, uploading if a GPU context is available.

Trait Implementations

impl<T: Clone + GpuSendable> Clone for Payload<T>

where T::GpuRepr: Clone,

fn clone(&self) -> Payload<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug + GpuSendable> Debug for Payload<T>

where T::GpuRepr: Debug,

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

Formats the value using the given formatter.