Fix capes being scaled wrong and invisible skins

connector/src/main/java/org/geysermc/connector/skin/SkinProvider.java

@@ -412,15 +412,38 @@ private static byte[] requestImage(String imageUrl, CapeProvider provider) throw
 
         // if the requested image is a cape
         if (provider != null) {
+            // Scale capes based on size
+            BufferedImage newImage;
             if (image.getWidth() > 64) {
-                image = scale(image, 64, 32);
+                newImage = new BufferedImage(128, 64, BufferedImage.TYPE_INT_ARGB);
+                Graphics g = newImage.createGraphics();
+                g.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
+                g.dispose();
+                newImage = scale(newImage, 64, 32);
+            } else {
+                newImage = new BufferedImage(64, 32, BufferedImage.TYPE_INT_ARGB);
+                Graphics g = newImage.createGraphics();
+                g.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
+                g.dispose();
             }
+
+            image.flush();
+            image = newImage;
         } else {
             // Very rarely, skins can be larger than Minecraft's default.
             // Bedrock will not render anything above a width of 128.
             if (image.getWidth() > 128) {
                 image = scale(image, 128, image.getHeight() / (image.getWidth() / 128));
             }
+
+            // Remove alpha from skins to replicate how java displays
+            BufferedImage newImage = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_RGB);
+            Graphics g = newImage.createGraphics();
+            g.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
+            g.dispose();
+
+            image.flush();
+            image = newImage;
         }
 
         byte[] data = bufferedImageToImageData(image);