Removed the switch/case statements in convertBlendFunc() by extending

the BlendFunc enumeration with a convenience integer value.

jme3-core/src/main/java/com/jme3/material/RenderState.java

@@ -216,63 +216,64 @@ public class RenderState implements Cloneable, Savable {
         /**
          * RGB Factor (0, 0, 0), Alpha Factor (0)
          */
-        Zero,
+        Zero(0),
         /**
          * RGB Factor (1, 1, 1), Alpha Factor (1)
          */
-        One,
+        One(1),
         /**
          * RGB Factor (R_s0, G_s0, B_s0), Alpha Factor (A_s0)
          */
-        Src_Color,
+        Src_Color(2),
         /**
          * RGB Factor (1-R_s0, 1-G_s0, 1-B_s0), Alpha Factor (1-A_s0)
          */
-        One_Minus_Src_Color,
+        One_Minus_Src_Color(3),
         /**
          * RGB Factor (R_d, G_d, B_d), Alpha Factor (A_d)
          */
-        Dst_Color,
+        Dst_Color(4),
         /**
          * RGB Factor (1-R_d, 1-G_d, 1-B_d), Alpha Factor (1-A_d)
          */
-        One_Minus_Dst_Color,
+        One_Minus_Dst_Color(5),
         /**
          * RGB Factor (A_s0, A_s0, A_s0), Alpha Factor (A_s0)
          */
-        Src_Alpha,
+        Src_Alpha(6),
         /**
          * RGB Factor (1-A_s0, 1-A_s0, 1-A_s0), Alpha Factor (1-A_s0)
          */
-        One_Minus_Src_Alpha,
+        One_Minus_Src_Alpha(7),
         /**
          * RGB Factor (A_d, A_d, A_d), Alpha Factor (A_d)
          */
-        Dst_Alpha,
+        Dst_Alpha(8),
         /**
          * RGB Factor (1-A_d, 1-A_d, 1-A_d), Alpha Factor (1-A_d)
          */
-        One_Minus_Dst_Alpha,
-        /**
-         * RGB Factor (R_c, G_c, B_c), Alpha Factor (A_c)
-         */
-        //Constant_Color,
-        /**
-         * RGB Factor (1-R_c, 1-G_c, 1-B_c), Alpha Factor (1-A_c)
-         */
-        //One_Minus_Constant_Color,
-        /**
-         * RGB Factor (A_c, A_c, A_c), Alpha Factor (A_c)
-         */
-        //Constant_Alpha,
+        One_Minus_Dst_Alpha(9),
         /**
-         * RGB Factor (1-A_c, 1-A_c, 1-A_c), Alpha Factor (A_c)
+         * RGB Factor (i, i, i), Alpha Factor (1)
          */
-        //One_Minus_Constant_Alpha,
+        Src_Alpha_Saturate(10);
+        
+        // Convenience value for easy use by the renderer.
+        private final int value;
+        
+        // Convenience constructor.
+        private BlendFunc(int value) {
+            this.value=value;
+        }
+        
         /**
-         * RGB Factor (i, i, i), Alpha Factor (1)
+         * Provides a predefined integer value for easy use by the renderer.
+         * 
+         * @return   The predefined integer value.
          */
-        Src_Alpha_Saturate
+        public int getIntValue() {
+            return value;
+        }
     }
     
 

jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java

@@ -751,10 +751,10 @@ public final class GLRenderer implements Renderer {
                         break;
                     case Custom:
                         gl.glBlendFuncSeparate(
-                            convertBlendFunc(state.getCustomSfactorRGB()), 
-                            convertBlendFunc(state.getCustomDfactorRGB()), 
-                            convertBlendFunc(state.getCustomSfactorAlpha()), 
-                            convertBlendFunc(state.getCustomDfactorAlpha()));
+                            state.getCustomSfactorRGB().getIntValue(),
+                            state.getCustomDfactorRGB().getIntValue(),
+                            state.getCustomSfactorAlpha().getIntValue(),
+                            state.getCustomDfactorAlpha().getIntValue());
                         break;
                     default:
                         throw new UnsupportedOperationException("Unrecognized blend mode: "
@@ -858,35 +858,6 @@ public final class GLRenderer implements Renderer {
         }
     }
 
-    private int convertBlendFunc(BlendFunc blendFunc) {
-       switch (blendFunc) {
-           case Zero:
-               return GL.GL_ZERO;
-           case One:
-               return GL.GL_ONE;
-           case Src_Color:
-               return GL.GL_SRC_COLOR;
-           case One_Minus_Src_Color:
-               return GL.GL_ONE_MINUS_SRC_COLOR;
-           case Dst_Color:
-               return GL.GL_DST_COLOR;
-           case One_Minus_Dst_Color:
-               return GL.GL_ONE_MINUS_DST_COLOR;
-           case Src_Alpha:
-               return GL.GL_SRC_ALPHA;
-           case One_Minus_Src_Alpha:
-               return GL.GL_ONE_MINUS_SRC_ALPHA;
-           case Dst_Alpha:
-               return GL3.GL_DST_ALPHA;
-           case One_Minus_Dst_Alpha:
-               return GL3.GL_ONE_MINUS_DST_ALPHA;
-           case Src_Alpha_Saturate:
-               return GL.GL_SRC_ALPHA_SATURATE;
-           default:
-              throw new UnsupportedOperationException("Unrecognized blend function: " + blendFunc);
-       }
-    }
-    
     private int convertStencilOperation(StencilOperation stencilOp) {
         switch (stencilOp) {
             case Keep: