public void put(Bitmap bitmap) {
        final Key key = keyPool.get(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());

        groupedMap.put(key, bitmap);
    }
A strategy for reusing bitmaps that requires any returned bitmap's dimensions to exactly match those request.
core/src/main/java/com/bumptech/glide/load/engine/bitmap_recycle/AttributeStrategy.java