first commit

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

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+materialMask = OSIEBCA * 3.0; // Gold Fresnel
+
+#ifdef GBUFFERS_TERRAIN
+    float colorG2 = pow2(color.g);
+#else
+    float colorG2 = color.g;
+#endif
+float colorG4 = pow2(colorG2);
+float factor = max(color.g, 0.8);
+
+smoothnessG = min1(factor - colorG4 * 0.5);
+highlightMult = 3.5 * max(colorG4, 0.2);
+
+smoothnessD = colorG4;
+
+color.rgb *= 0.5 + 0.4 * GetLuminance(color.rgb);
+
+#ifdef COATED_TEXTURES
+    noiseFactor = 0.33;
+#endif