first commit

shaderpacks/Reimagined - Low/shaders/lib/materials/specificMaterials/terrain/diamondBlock.glsl

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+materialMask = OSIEBCA; // Intense Fresnel
+
+float factor = max(color.g, 0.8);
+float factor2 = pow2(factor);
+#ifdef GBUFFERS_TERRAIN
+    float factor4 = pow2(factor2);
+#else
+    float factor4 = factor2;
+#endif
+
+smoothnessG = factor - pow2(pow2(color.g)) * 0.4;
+highlightMult = 3.0 * max(pow2(factor4), 0.2);
+
+smoothnessD = factor4 * 0.75;
+
+#if MC_VERSION < 11300
+    highlightMult *= 2.0;
+    smoothnessD /= 0.75;
+#endif
+
+color.rgb *= 0.7 + 0.4 * GetLuminance(color.rgb);
+
+#ifdef COATED_TEXTURES
+    noiseFactor = 0.5;
+#endif