Module double_buffer 

Double-buffered GPU command submission.

Overlaps CPU work (encoding the next frame’s commands) with GPU work (executing the current frame’s commands) using a ping-pong buffer scheme.

Architecture

Frame N:   CPU encodes buffer A   ───▶  GPU executes buffer A
Frame N+1: CPU encodes buffer B   ───▶  GPU executes buffer B
Frame N+2: CPU encodes buffer A   ───▶  GPU executes buffer A  (recycled)
           └──── overlapped ─────┘

The DoubleBufferSubmitter manages two command slots and alternates between them. While the GPU processes slot A, the CPU can prepare commands in slot B, minimising idle time on both sides.

Status

This module provides the scheduling and statistics logic. Actual GPU command execution is delegated to the caller via closures.

Structs

CommandSlot

A command buffer slot with timing information.

DoubleBufferStats

Performance statistics for the double-buffer submitter.

DoubleBufferSubmitter

Double-buffered command submission manager.

Enums

DoubleBufferError

Errors from the double-buffer submitter.

SlotState

State of a single command buffer slot.