NONE

Disables face culling during shadow rendering.

All triangle faces (both front and back) are rendered into the shadow map. No faces are culled.

Renders: Both front and back faces

Pros:

• Most geometrically accurate shadows

• Essential for double-sided materials

• Correct for thin geometry where both sides are visible

Cons:

• Highest fragment processing cost (~2× render cost)

• Increased risk of shadow acne from interior surfaces

• May require more aggressive depth biasing

Best for: Thin geometry (foliage, cloth, hair, paper), transparent objects, or any double-sided materials where both sides cast visible shadows.

Performance note: Use sparingly. Consider BACK for background foliage or distant objects where the accuracy difference is imperceptible.