Added DARKEN blendMode

android/assets/shaders/indexpalette3.frag

@@ -90,6 +90,12 @@ void main() {
       color.g = 0.0;
       color.b = 0.0;
     }
+
+  // Same as 8, except darker
+  } else if (blendMode == 10) {
+    if (color.a > 0.0) {
+      color.rgb *= tint.rgb;
+    }
   }
 
   vec3 colorRGB = pow(color.rgb, vec3(1.0 / gamma));

core/src/com/riiablo/graphics/BlendMode.java

@@ -16,4 +16,5 @@ public interface BlendMode {
   int TINT_ID         = 7;
   int BRIGHTEN        = 8;
   int TINT_ID_RED     = 9;
+  int DARKEN          = 10;
 }