Exporting image as PNG

Momoko_Fan · March 12, 2018, 1:19am

Yeah that’s basically the reason. That method is a backdoor to get platform-independent screenshot export functionality working, it’s not really intended for general use.

There’s a note that the image has to be in the RGBA8 format:

github.com

jMonkeyEngine/jmonkeyengine/blob/master/jme3-core/src/main/java/com/jme3/system/JmeSystem.java#L130


      
           */

          public static void showSoftKeyboard(boolean show) {

              checkDelegate();

              systemDelegate.showSoftKeyboard(show);

          }

          

          public static SoftTextDialogInput getSoftTextDialogInput() {

              checkDelegate();

              return systemDelegate.getSoftTextDialogInput();

          }

          

          /**

           * Compresses a raw image into a stream.

           * 

           * The encoding is performed via system libraries. On desktop, the encoding

           * is performed via ImageIO, whereas on Android, is done via the 

           * Bitmap class.

           * 

           * @param outStream The stream where to write the image data.

           * @param format The format to use, either "png" or "jpg".

           * @param imageData The image data in {@link com.jme3.texture.Image.Format#RGBA8} format.

Perhaps a better approach would have been to fallback to ImageRaster, which allows reading color data from any jME image, in case a format other than RGBA8 is used. You can implement a PR for that if you like