dispose pixels array after init texture

Author: codeanticode

core/src/processing/opengl/PGraphicsOpenGL.java

@@ -6646,9 +6646,16 @@ protected Object initCache(PImage img) {
     if (tex == null || tex.contextIsOutdated()) {
       tex = addTexture(img);
       if (tex != null) {
+        boolean dispose = !img.loaded;
         img.loadPixels();
         tex.set(img.pixels, img.format);
         img.setModified();
+        if (dispose) {
+          // We only used the pixels to load the image into the texture and the user did not request
+          // to load the pixels, so we should dispose the pixels array to avoid wasting memory
+          img.pixels = null;
+          img.loaded = false;
+        }
       }
     }
     return tex;