Struct DmabufImage 

pub struct DmabufImage(/* private fields */);

A client’s single-plane dma-buf, imported once, that yields a texture to draw each commit from (Self::texture).

A foreign producer writes the buffer again between commits, and the spec has an image acquire it from VK_QUEUE_FAMILY_FOREIGN_EXT after each write, which a texture wgpu keeps in one layout cannot. So with explicit layouts the device memory is imported once and every commit binds it to a fresh VkImage, whose first use is that acquire (a patched wgpu-hal makes the first barrier of a ForeignExternal texture one). An image over memory costs a vkCreateImage and a bind, no import.

Implementations

impl DmabufImage

pub fn texture(&self, device: &Device) -> Result<Texture, ImportError>

A texture of the buffer as it is now, to draw one commit from. Its first use acquires the image from the foreign queue family, so the producer’s latest writes and compression metadata are what is read.

Errors

ImportError::Vulkan when the image cannot be created or bound.

Trait Implementations

impl Clone for DmabufImage

fn clone(&self) -> DmabufImage

Returns a duplicate of the value.

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

Performs copy-assignment from source.