From b6e3c64405c4dc04cca074424c99a9a671810d3c Mon Sep 17 00:00:00 2001
From: Merlin1809 <88194861+Merlin1809@users.noreply.github.com>
Date: Sat, 8 Aug 2026 10:48:13 +0200
Subject: [PATCH] fix normal encoding for denoised rough reflections

---
 shaders/dimensions/composite1.fsh | 12 ++++++++----
 shaders/dimensions/composite2.fsh |  4 +++-
 shaders/lang/en_us.lang           |  2 +-
 shaders/lang/zh_cn.lang           |  2 +-
 4 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/shaders/dimensions/composite1.fsh b/shaders/dimensions/composite1.fsh
index 47d89d8..93b8cda 100644
--- a/shaders/dimensions/composite1.fsh
+++ b/shaders/dimensions/composite1.fsh
@@ -871,8 +871,8 @@ uniform float wetness;
 
 				vec2 driprate = vec2(0.0,frameTimeCounter)*0.05;
 
-				vec2 UV = mix(worldPos.xz, worldPos.xy*vec2(2.0, 0.5)+driprate, abs(flatNormals.z));
-				UV = mix(UV, worldPos.zy*vec2(2.0, 0.5)+driprate, abs(flatNormals.x));
+				vec2 UV = mix(worldPos.xz, worldPos.xy*vec2(2.0, 0.5)+driprate, pow(abs(flatNormals.z),2));
+				UV = mix(UV, worldPos.zy*vec2(2.0, 0.5)+driprate, pow(abs(flatNormals.x),2));
 
 				#ifdef SHADER_GRASS
 				if(isShaderGrass) UV = worldPos.xz;
@@ -984,10 +984,14 @@ float encodeVec2(float x,float y){
     return encodeVec2(vec2(x,y));
 }
 
+vec2 signNotZero(vec2 v) {
+    return step(vec2(0.0), v) * 2.0 - 1.0;
+}
+
 vec2 encodeNormal(vec3 n){
 	n.xy = n.xy / dot(abs(n), vec3(1.0));
-	n.xy = n.z <= 0.0 ? (1.0 - abs(n.yx)) * sign(n.xy) : n.xy;
-    vec2 encn = clamp(n.xy * 0.5 + 0.5,-1.0,1.0);
+	n.xy = n.z <= 0.0 ? (1.0 - abs(n.yx)) * signNotZero(n.xy) : n.xy;
+    vec2 encn = clamp(n.xy * 0.5 + 0.5,0.0,1.0);
 	
     return encn;
 }
diff --git a/shaders/dimensions/composite2.fsh b/shaders/dimensions/composite2.fsh
index 85d5653..3a30ac2 100644
--- a/shaders/dimensions/composite2.fsh
+++ b/shaders/dimensions/composite2.fsh
@@ -490,7 +490,7 @@ void main() {
       vec2 lightmap = dataUnpacked1.yz;
 
       vec4 stuff = texelFetch(colortex8, ivec2(gl_FragCoord.xy), 0);
-      vec3 normal = decode(stuff.xy);
+      vec3 normal = normalize(decode(stuff.xy));
       vec2 speculars = stuff.zw;
 
       float roughness = speculars.r;
@@ -505,6 +505,8 @@ void main() {
       // get reflected vector
       mat3 basis = CoordBase(normal);
       vec3 viewDir = -NplayerPos*basis;
+      viewDir.z = abs(viewDir.z);
+
       float VdotN = dot(-normalize(viewDir), vec3(0.0,0.0,1.0));
       float shlickFresnel = shlickFresnelRoughness(VdotN, roughness);
 
diff --git a/shaders/lang/en_us.lang b/shaders/lang/en_us.lang
index 9df605b..d41db35 100644
--- a/shaders/lang/en_us.lang
+++ b/shaders/lang/en_us.lang
@@ -1,6 +1,6 @@
 option.SHADER_VERSION_LABEL = §d§lECLIPSE§r - A Bliss Edit
     prefix.SHADER_VERSION_LABEL = V
-    value.SHADER_VERSION_LABEL.482 = 8.3.1
+    value.SHADER_VERSION_LABEL.482 = 8.3.2
 
 iris_extension.keybind.key0.name=Flashlight
 
diff --git a/shaders/lang/zh_cn.lang b/shaders/lang/zh_cn.lang
index f584d65..627f087 100644
--- a/shaders/lang/zh_cn.lang
+++ b/shaders/lang/zh_cn.lang
@@ -1,6 +1,6 @@
 option.SHADER_VERSION_LABEL = §d§lECLIPSE§r - Bliss 编辑版
     prefix.SHADER_VERSION_LABEL = 版本
-    value.SHADER_VERSION_LABEL.482 = 8.3.1
+    value.SHADER_VERSION_LABEL.482 = 8.3.2
 
 # 如果你是来翻译的，这不是玩笑，这些选项的功能正如其名
 profile.POTATO=§4土豆 (极低配置)