Struct CommandBuffer

pub struct CommandBuffer { /* private fields */ }

The command buffer of video system.

Implementations

impl CommandBuffer

pub fn new() -> Self

Creates a new and empty CommandBuffer.

pub fn draw(&mut self, dc: Draw)

Draws ur mesh.

pub fn update_scissor(&mut self, scissor: SurfaceScissor)

Updates the scissor test of surface.

The test is initially disabled. While the test is enabled, only pixels that lie within the scissor box can be modified by drawing commands.

pub fn update_viewport(&mut self, viewport: SurfaceViewport)

Updates the viewport of surface.

pub fn update_texture( &mut self, id: TextureHandle, area: Aabb2<u32>, bytes: &[u8], )

Update a contiguous subregion of an existing two-dimensional texture object.

pub fn update_vertex_buffer( &mut self, id: MeshHandle, offset: usize, bytes: &[u8], )

Update a subset of dynamic vertex buffer. Use offset specifies the offset into the buffer object’s data store where data replacement will begin, measured in bytes.

pub fn update_index_buffer( &mut self, id: MeshHandle, offset: usize, bytes: &[u8], )

Update a subset of dynamic index buffer. Use offset specifies the offset into the buffer object’s data store where data replacement will begin, measured in bytes.

pub fn submit(&mut self, surface: SurfaceHandle) -> Result<()>

Clears the batch, and submits all the commands into video device. Its guaranteed that all the commands in this batch will be executed one by one in order.

Notes that this method has no effect on the allocated capacity of the underlying storage.

Trait Implementations

impl Default for CommandBuffer

fn default() -> CommandBuffer

Returns the “default value” for a type.