custommods

.minecraft/shaderpacks/ComplementaryShaders_v4.6/shaders/lib/util/encode.glsl

@@ -0,0 +1,15 @@
+//Spheremap Transform from https://aras-p.info/texts/CompactNormalStorage.html
+vec2 EncodeNormal(vec3 n) {
+    float f = sqrt(n.z * 8.0 + 8.0);
+    return n.xy / f + 0.5;
+}
+
+vec3 DecodeNormal(vec2 enc) {
+    vec2 fenc = enc * 4.0 - 2.0;
+    float f = dot(fenc,fenc);
+    float g = sqrt(1.0 - f / 4.0);
+    vec3 n;
+    n.xy = fenc * g;
+    n.z = 1.0 - f / 2.0;
+    return n;
+}