fix: modify getDisplayDPI() to handle Windows DPI misreporting

- Added check for Windows systems where Toolkit.getScreenResolution()
  incorrectly reports 96 DPI on high-DPI screens.
- Force 2x scaling for Windows if DPI is 96 to ensure correct display scaling.
- Maintain normal 2x scaling for DPI >= 144, fallback to 1x for lower DPI.

Author: yehiarasheed

core/src/processing/core/PImage.java

@@ -281,11 +281,18 @@ private void init(int width, int height, int format, int factor,
   (ACHIEVE HIGH-DPI BY DEFAULT)
   Change access modifier as needed.
   */
-  private int getDisplayDPI() {
-      int dpi = Toolkit.getDefaultToolkit().getScreenResolution();
-      return dpi > 0 ? dpi : 1;  // Fallback to 1 if DPI cannot be determined
+  protected int getDisplayDPI() {
+    int dpi = Toolkit.getDefaultToolkit().getScreenResolution();
+
+    // On Windows, always assume 2x if Toolkit misreports 96 DPI
+    if (dpi == 96 && System.getProperty("os.name").toLowerCase().contains("win")) {
+      return 2;
+    }
+
+    return (dpi >= 144) ? 2 : 1;  // 2x for high DPI, 1x otherwise
   }
 
+
   /**
    * Check the alpha on an image, using a really primitive loop.
    */