Hardware Encoding, Zero-Copy Capture & Virtual Displays

1. Zero-Copy D3D11 Capture-to-Encode Pipeline

OmegaDesk eliminates CPU-to-GPU memory roundtrips on Windows:

1. DXGI Desktop Duplication (omegadesk-capture): Acquires the desktop frame directly as an ID3D11Texture2D on the GPU, composites hardware cursors, and handles rotated displays (90°, 180°, 270°).
2. GPU Color Conversion (ID3D11VideoProcessor): Converts BGRA8 desktop textures to NV12 entirely on the GPU.
3. Media Foundation Hardware H.264 (omegadesk-codec): Wraps the NV12 texture via MFCreateDXGISurfaceBuffer and feeds it directly into Intel Quick Sync, NVIDIA NVENC, or AMD AMF hardware encoders (--encoder auto|hardware|software), falling back to OpenH264 when no GPU encoder is available.

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2. Adaptive Video QoS (Congestion Control)

Every video frame is acknowledged by omegadesk-client. When RTT rises or frame acknowledgments lag:

1. The agent dynamically lowers the target H.264 bitrate first.
2. If congestion persists, it reduces frame rate while respecting --bitrate-mbps and --fps ceilings.
3. As soon as network congestion clears, bitrate and FPS ramp back up smoothly.

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3. Signed IddCx Virtual Display Driver & Privacy Screen Blanking

• Virtual Monitors (drivers/idd): Pass --virtual-display 1920x1080@60 to create headless virtual displays on machines without physical monitors attached.
• Privacy Mode (--privacy): Renders a fullscreen WDA_EXCLUDEFROMCAPTURE blackout overlay on the physical monitor so local bystanders cannot view or control the screen while the remote operator works.