Weitere Bugfixes und kleine Feature Erweiterungen

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

@@ -13,10 +13,11 @@ uniform sampler2D m_AlphaMap_2;
 uniform int m_SteepIndex;
 #endif
 
-uniform vec3 m_LightDir;
-uniform vec3 m_SunColor;
-uniform vec3 m_AmbientColor;
-uniform vec3 g_CameraPosition;
+uniform vec3  m_LightDir;
+uniform vec3  m_SunColor;
+uniform vec3  m_AmbientColor;
+uniform vec3  g_CameraPosition;
+uniform float m_Wetness;
 
 in vec3 vWorldPos;
 in vec3 vNormal;
@@ -77,15 +78,22 @@ void main() {
     col = col * flatBlend + steepCol * steepBlend;
 #endif
 
-    vec3  N       = normalize(vNormal);
+    vec3  N        = normalize(vNormal);
     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
+    float wet = clamp(m_Wetness, 0.0, 1.0);
+    col.rgb *= (1.0 - 0.20 * wet);
+    vec3  viewDir = normalize(g_CameraPosition - vWorldPos);
+    vec3  H       = normalize(lightDir + viewDir);
+    float spec    = pow(max(dot(N, H), 0.0), 80.0) * wet;
+
     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
 }