Blinn-Phong Reflection Model
Surface color is the sum of ambient, diffuse (N dot L scaled by material and light color), and specular terms, where Blinn's variant computes specular from N dot H with the half-vector H = normalize(L + V) raised to a shininess exponent. Evaluating it per-fragment with interpolated, renormalized normals gives smooth highlights that per-vertex evaluation misses.
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Surface color is the sum of ambient, diffuse (N dot L scaled by material and light color), and specular terms, where Blinn's variant computes specular from N dot H with the half-vector H = normalize(L + V) raised to a shininess exponent. Evaluating it per-fragment with interpolated, renormalized normals gives smooth highlights that per-vertex evaluation misses.
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