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Culls back-facing triangles during shadow rendering.

Only front-facing triangles (toward the light) are rendered into the shadow map. Back-facing triangles are culled before rasterization.

Renders: Front faces only

Pros:

• Good balance between performance and correctness

• Reduces self-shadowing artifacts (shadow acne)

• Standard choice in most rendering engines

Cons:

• May miss shadows from interior surfaces of complex geometry

Best for: Solid, opaque objects (characters, props, buildings). This is the recommended default for most 3D content.