Nifty uploads a lot of data

[Trass3r]

The UI shows up as a hotspot in https://github.com/tonihele/OpenKeeper CPU profiles cause it constantly uploads data via glBufferData.
Is this a problem on the user side or does the code lack optimizations to avoid that:

jmonkeyengine/jme3-niftygui/src/main/java/com/jme3/niftygui/JmeBatchRenderBackend.java

Lines 557 to 570 in 03c26a8

	public void render() {
	renderState.setBlendMode(convertBlend(blendMode));
	vertexPosBuffer.flip();
	vertexPos.updateData(vertexPosBuffer);
	vertexTexCoordBuffer.flip();
	vertexTexCoord.updateData(vertexTexCoordBuffer);
	vertexColorBuffer.flip();
	vertexColor.updateData(vertexColorBuffer);
	indexBufferBuffer.flip();
	indexBuffer.updateData(indexBufferBuffer);