Trait rutabaga_gfx::rutabaga_core::RutabagaComponent

pub trait RutabagaComponent {
    // Provided methods
    fn get_capset_info(&self, _capset_id: u32) -> (u32, u32) { ... }
    fn get_capset(&self, _capset_id: u32, _version: u32) -> Vec<u8> { ... }
    fn force_ctx_0(&self) { ... }
    fn create_fence(&mut self, _fence: RutabagaFence) -> RutabagaResult<()> { ... }
    fn event_poll(&self) { ... }
    fn poll_descriptor(&self) -> Option<SafeDescriptor> { ... }
    fn create_3d(
        &self,
        resource_id: u32,
        _resource_create_3d: ResourceCreate3D
    ) -> RutabagaResult<RutabagaResource> { ... }
    fn attach_backing(
        &self,
        _resource_id: u32,
        _vecs: &mut Vec<RutabagaIovec>
    ) -> RutabagaResult<()> { ... }
    fn detach_backing(&self, _resource_id: u32) { ... }
    fn unref_resource(&self, _resource_id: u32) { ... }
    fn transfer_write(
        &self,
        _ctx_id: u32,
        _resource: &mut RutabagaResource,
        _transfer: Transfer3D
    ) -> RutabagaResult<()> { ... }
    fn transfer_read(
        &self,
        _ctx_id: u32,
        _resource: &mut RutabagaResource,
        _transfer: Transfer3D,
        _buf: Option<IoSliceMut<'_>>
    ) -> RutabagaResult<()> { ... }
    fn resource_flush(
        &self,
        _resource_id: &mut RutabagaResource
    ) -> RutabagaResult<()> { ... }
    fn create_blob(
        &mut self,
        _ctx_id: u32,
        _resource_id: u32,
        _resource_create_blob: ResourceCreateBlob,
        _iovec_opt: Option<Vec<RutabagaIovec>>,
        _handle_opt: Option<RutabagaHandle>
    ) -> RutabagaResult<RutabagaResource> { ... }
    fn map(&self, _resource_id: u32) -> RutabagaResult<RutabagaMapping> { ... }
    fn unmap(&self, _resource_id: u32) -> RutabagaResult<()> { ... }
    fn export_fence(&self, _fence_id: u64) -> RutabagaResult<RutabagaHandle> { ... }
    fn create_context(
        &self,
        _ctx_id: u32,
        _context_init: u32,
        _context_name: Option<&str>,
        _fence_handler: RutabagaFenceHandler
    ) -> RutabagaResult<Box<dyn RutabagaContext>> { ... }
    fn snapshot(&self, _directory: &str) -> RutabagaResult<()> { ... }
    fn restore(&self, _directory: &str) -> RutabagaResult<()> { ... }
}

A RutabagaComponent is a building block of the Virtual Graphics Interface (VGI). Each component on it’s own is sufficient to virtualize graphics on many Google products. These components wrap libraries like gfxstream or virglrenderer, and Rutabaga’s own 2D and cross-domain prototype functionality.

Most methods return a RutabagaResult that indicate the success, failure, or requested data for the given command.

Provided Methods

fn get_capset_info(&self, _capset_id: u32) -> (u32, u32)

Implementations should return the version and size of the given capset_id. (0, 0) is returned by default.

fn get_capset(&self, _capset_id: u32, _version: u32) -> Vec<u8>

Implementations should return the capabilites of given a capset_id and version. A zero-sized array is returned by default.

fn force_ctx_0(&self)

Implementations should set their internal context to be the reserved context 0.

fn create_fence(&mut self, _fence: RutabagaFence) -> RutabagaResult<()>

Implementations must create a fence that represents the completion of prior work. This is required for synchronization with the guest kernel.

fn event_poll(&self)

Used only by VirglRenderer to poll when its poll_descriptor is signaled.

fn poll_descriptor(&self) -> Option<SafeDescriptor>

Used only by VirglRenderer to return a poll_descriptor that is signaled when a poll() is necessary.

fn create_3d( &self, resource_id: u32, _resource_create_3d: ResourceCreate3D ) -> RutabagaResult<RutabagaResource>

Implementations must create a resource with the given metadata. For 2D rutabaga components, this a system memory allocation. For 3D components, this is typically a GL texture or buffer. Vulkan components should use blob resources instead.

fn attach_backing( &self, _resource_id: u32, _vecs: &mut Vec<RutabagaIovec> ) -> RutabagaResult<()>

Implementations must attach vecs to the resource.

fn detach_backing(&self, _resource_id: u32)

Implementations must detach vecs from the resource.

fn unref_resource(&self, _resource_id: u32)

Implementations must release the guest kernel reference on the resource.

fn transfer_write( &self, _ctx_id: u32, _resource: &mut RutabagaResource, _transfer: Transfer3D ) -> RutabagaResult<()>

Implementations must perform the transfer write operation. For 2D rutabaga components, this done via memcpy(). For 3D components, this is typically done via glTexSubImage(..).

fn transfer_read( &self, _ctx_id: u32, _resource: &mut RutabagaResource, _transfer: Transfer3D, _buf: Option<IoSliceMut<'_>> ) -> RutabagaResult<()>

Implementations must perform the transfer read operation. For 2D rutabaga components, this done via memcpy(). For 3D components, this is typically done via glReadPixels(..).

fn resource_flush( &self, _resource_id: &mut RutabagaResource ) -> RutabagaResult<()>

Implementations must flush the given resource to the display.

fn create_blob( &mut self, _ctx_id: u32, _resource_id: u32, _resource_create_blob: ResourceCreateBlob, _iovec_opt: Option<Vec<RutabagaIovec>>, _handle_opt: Option<RutabagaHandle> ) -> RutabagaResult<RutabagaResource>

Implementations must create a blob resource on success. The memory parameters, size, and usage of the blob resource is given by resource_create_blob.

fn map(&self, _resource_id: u32) -> RutabagaResult<RutabagaMapping>

Implementations must map the blob resource on success. This is typically done by glMapBufferRange(…) or vkMapMemory.

fn unmap(&self, _resource_id: u32) -> RutabagaResult<()>

Implementations must unmap the blob resource on success. This is typically done by glUnmapBuffer(…) or vkUnmapMemory.

fn export_fence(&self, _fence_id: u64) -> RutabagaResult<RutabagaHandle>

Implementations must return a RutabagaHandle of the fence on success.

fn create_context( &self, _ctx_id: u32, _context_init: u32, _context_name: Option<&str>, _fence_handler: RutabagaFenceHandler ) -> RutabagaResult<Box<dyn RutabagaContext>>

Implementations must create a context for submitting commands. The command stream of the context is determined by context_init. For virgl contexts, it is a Gallium/TGSI command stream. For gfxstream contexts, it’s an autogenerated Vulkan or GLES streams.

fn snapshot(&self, _directory: &str) -> RutabagaResult<()>

Implementations must snapshot to the specified directory

fn restore(&self, _directory: &str) -> RutabagaResult<()>

Implementations must restore from the specified directory

Implementors

impl RutabagaComponent for CrossDomain

impl RutabagaComponent for Gfxstream

impl RutabagaComponent for Rutabaga2D

impl RutabagaComponent for VirglRenderer