Bugfixes, weitere Vegetationsgeneratoren hinzugefügt

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

@@ -1,5 +1,12 @@
 uniform sampler2D m_TexFlat;
 uniform sampler2D m_TexSteep;
+
+#ifdef HAS_SPLAT
+uniform sampler2D m_SplatMap;
+uniform sampler2D m_TexFlat2;
+uniform sampler2D m_TexFlat3;
+uniform sampler2D m_TexFlat4;
+#endif
 uniform float m_TexScale;
 
 #ifdef HAS_NM_FLAT
@@ -57,7 +64,22 @@ void main() {
 
     // Flat: reines XZ-UV wie das Terrain (uvY = worldPos.xz / texScale), kein Triplanar.
     // Steep: Triplanar für alle nicht-flachen Flächen inkl. Decken und Tunnelwände.
-    vec4 col = texture(m_TexFlat,  uvY)                  * flatBlend
+#ifdef HAS_SPLAT
+    // Splatmap-UV: worldPos.xz linear auf [0,1] (kein Flip nötig – Konvention im Editor: pz=0 → worldZ=-2048)
+    vec2 splatUV = (vWorldPos.xz + 2048.0) / 4096.0;
+    vec4 splat   = texture(m_SplatMap, splatUV);
+    float w2 = splat.g;
+    float w3 = splat.b;
+    float w4 = splat.a;
+    float w1 = max(0.0, 1.0 - w2 - w3 - w4);
+    vec4 flatCol = texture(m_TexFlat,  uvY) * w1
+                 + texture(m_TexFlat2, uvY) * w2
+                 + texture(m_TexFlat3, uvY) * w3
+                 + texture(m_TexFlat4, uvY) * w4;
+#else
+    vec4 flatCol = texture(m_TexFlat, uvY);
+#endif
+    vec4 col = flatCol                                    * flatBlend
              + triplanar(m_TexSteep, uvX, uvY, uvZ, bw) * steepBlend;
 
     // Geometrie-Normale für Beleuchtung, ggf. durch Normal-Map ersetzt.