Libgdx Pixmap and getFrameBufferPixels

Question

I wonder know how to get the FrameBufferPixel in a Pixmap

I know I must use getFrameBufferPixels(true)

But I don't know what parameters to put in

new Pixmap(byte[] encodedData, int offset, int len);

Can you show me an exemple who should works ?

Thanks you

Answer 1

new Pixmap(byte[] encodedData, int offset, int len);

As far as I know, encodedData needs to hold data from a png, jpg or bmp file, including the file header. The data you receive from getFrameBufferPixels is in RGBA8888 format. So you can't use this constructor for your screenshot. Instead I would try something like this:

byte[] pixelData = ScreenUtils.getFrameBufferPixels(true);
Pixmap pixmap = new Pixmap(Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), Format.RGBA8888);
ByteBuffer pixels = pixmap.getPixels();
pixels.clear();
pixels.put(pixelData);
pixels.position(0)