Update mappings to stable_39-1.12 (#322)

src/main/java/appeng/client/render/cablebus/CubeBuilder.java

@@ -398,7 +398,7 @@ public class CubeBuilder {
                     builder.put(i, x, y, z);
                     break;
                 case NORMAL:
-                    builder.put(i, face.getFrontOffsetX(), face.getFrontOffsetY(), face.getFrontOffsetZ());
+                    builder.put(i, face.getXOffset(), face.getYOffset(), face.getZOffset());
                     break;
                 case COLOR:
                     // Color format is RGBA

src/main/java/appeng/client/render/cablebus/QuadRotator.java

@@ -72,7 +72,7 @@ public class QuadRotator {
         // Figure out where the position is in the array
         VertexFormat format = quad.getFormat();
         int posIdx = this.findPositionOffset(format) / 4;
-        int stride = format.getNextOffset() / 4;
+        int stride = format.getSize() / 4;
         int normalIdx = format.getNormalOffset();
         VertexFormatElement.EnumType normalType = null;
         // Figure out the type of the normals