Struct DmaBufSupport 

pub struct DmaBufSupport {
    pub import: bool,
    pub export: bool,
    pub modifiers: bool,
}

How a device can move images across process or device boundaries.

Both halves matter independently. A render-only GPU paired with a separate display controller — the common ARM SoC topology — needs export on one device and import on the other.

Fields

import: bool

Can import a dma-buf as a texture.

export: bool

Can export one of its own images as a dma-buf.

modifiers: bool

Can allocate and import with an explicit format modifier.

Without this, the only safe shared layout is linear, and scanout gives up whatever bandwidth a vendor tiled or compressed layout would have saved.

Implementations

impl DmaBufSupport

pub const fn can_allocate_scanout(self) -> bool

Whether this device can allocate its own scanout buffers.

When false, the DRM presentation path must allocate through GBM and import instead. Both paths are supported; this is what picks between them.

Trait Implementations

impl Clone for DmaBufSupport

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DmaBufSupport

impl Debug for DmaBufSupport

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

Formats the value using the given formatter.

impl Default for DmaBufSupport

fn default() -> Self

Returns the “default value” for a type.

impl Eq for DmaBufSupport

impl PartialEq for DmaBufSupport

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DmaBufSupport