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Render-Pass Nodes (MEC)

Two nodes for working with multi-pass renderer output (V-Ray, Arnold, Redshift, Cycles, Octane, etc.).

MergeRenderPassesMEC

Composites a beauty pass with optional auxiliary passes:

out = beauty * (ao_strength · AO + (1 - ao_strength))
    + diffuse_gain  · diffuse
    + specular_gain · specular
    + emission_gain · emission

All auxiliary passes are optional; missing passes contribute zero. Inputs are auto-resized (bilinear) to the beauty resolution if needed. This is intentionally simple — for full re-light workflows use a dedicated tool, but for quick AO multiplies and emission boosts this covers 90% of use cases.

DepthOfFieldMaskMEC

Converts a depth pass into a per-pixel circle-of-confusion (CoC) mask:

coc = clamp(|depth - focus_distance| / aperture, 0, 1)

Outputs both the CoC mask (1 = fully defocused, 0 = sharp) and an in_focus mask (its complement). Use these to drive a separable blur node for cheap depth-of-field, or as alpha layers for compositing.

The depth_channel selector lets you pick R / G / B / luma when the depth pass arrives encoded in an unusual channel layout.