Throw an exception when trying to upload a recycled bitmap.

        if (bitmap == null) {

            throw new NullPointerException("texImage2D can't be used with a null Bitmap");

        }

        if (bitmap.isRecycled()) {

            throw new IllegalArgumentException("bitmap is recycled");

        }

        if (native_texImage2D(target, level, -1, bitmap, -1, border)!=0) {

            throw new IllegalArgumentException("invalid Bitmap format");

        }