Weiter am Wettersystem gearbeitet, ordentliche Wolken und Regen etc ergänzt

blight-assets/src/main/resources/Shaders/TerrainArray.frag

@@ -16,9 +16,11 @@ uniform sampler2D m_AlphaMap_2;
 uniform sampler2DArray m_NormalArray;
 #endif
 
-uniform vec3 m_LightDir;
-uniform vec3 m_SunColor;
-uniform vec3 m_AmbientColor;
+uniform vec3  m_LightDir;
+uniform vec3  m_SunColor;
+uniform vec3  m_AmbientColor;
+uniform float m_Wetness;
+uniform vec3  g_CameraPosition;
 
 in vec2 vSplatUV;
 in vec3 vWorldPos;
@@ -106,14 +108,20 @@ void main() {
     N = normalize(pertN);
 #endif
 
-    vec3 lightDir = normalize(m_LightDir);
-    float diff = max(dot(N, lightDir), 0.0);
-    vec3 light = m_AmbientColor + m_SunColor * diff;
+    vec3  lightDir = normalize(m_LightDir);
+    float diff     = max(dot(N, lightDir), 0.0);
+    vec3  light    = m_AmbientColor + m_SunColor * diff;
+
+    // Nass-Effekt: Oberfläche abdunkeln + Blinn-Phong Specular Schimmer
+    col.rgb *= (1.0 - 0.20 * m_Wetness);
+    vec3  viewDir = normalize(g_CameraPosition - vWorldPos);
+    vec3  H       = normalize(lightDir + viewDir);
+    float spec    = pow(max(dot(N, H), 0.0), 80.0) * m_Wetness;
 
     const float BRIGHTNESS = 0.80;
 #ifdef DEBUG_NO_LIGHT
     outColor = vec4(col.rgb * BRIGHTNESS, col.a);
 #else
-    outColor = vec4(col.rgb * light * BRIGHTNESS, col.a);
+    outColor = vec4(col.rgb * light * BRIGHTNESS + vec3(spec * 0.35), col.a);
 #endif
 }