public void setupOffscreenView() {
offCamera = new Camera(width, height);
// create a pre-view. a view that is rendered before the main view
offView = renderManager.createPreView("Offscreen View", offCamera);
offView.setBackgroundColor(ColorRGBA.DarkGray);
offView.setClearFlags(true, true, true);
// this will let us know when the scene has been rendered to the
// frame buffer
offView.addProcessor(this);
// create offscreen framebuffer
offBuffer = new FrameBuffer(width, height, 1);
// setup framebuffer's cam
offCamera.setFrustumPerspective(45f, 1f, 1f, 1000f);
offCamera.setLocation(new Vector3f(0f, 0f, -5f));
offCamera.lookAt(new Vector3f(0f, 0f, 0f), Vector3f.UNIT_Y);
// setup framebuffer's texture
// offTex = new Texture2D(width, height, Format.RGBA8);
// setup framebuffer to use renderbuffer
// this is faster for gpu -> cpu copies
offBuffer.setDepthBuffer(Format.Depth);
offBuffer.setColorBuffer(Format.RGBA8);
// offBuffer.setColorTexture(offTex);
// set viewport to render to offscreen framebuffer
offView.setOutputFrameBuffer(offBuffer);
// setup framebuffer's scene
Box boxMesh = new Box(Vector3f.ZERO, 1, 1, 1);
Material material = assetManager.loadMaterial("Interface/Logo/Logo.j3m");
offBox = new Geometry("box", boxMesh);
offBox.setMaterial(material);
// attach the scene to the viewport to be rendered
offView.attachScene(offBox);
}
public void reshape(ViewPort vp, int w, int h) {
// this has no effect at first init but is useful when resizing the canvas with multi views
Camera cam = vp.getCamera();
cam.setViewPort(left, right, bottom, top);
// resizing the camera to fit the new viewport and saving original dimensions
cam.resize(w, h, false);
left = cam.getViewPortLeft();
right = cam.getViewPortRight();
top = cam.getViewPortTop();
bottom = cam.getViewPortBottom();
originalWidth = w;
originalHeight = h;
cam.setViewPort(0, 1, 0, 1);
// computing real dimension of the viewport and resizing he camera
width = (int) (w * (Math.abs(right - left)));
height = (int) (h * (Math.abs(bottom - top)));
width = Math.max(1, width);
height = Math.max(1, height);
cam.resize(width, height, false);
cameraInit = true;
computeDepth = false;
if (renderFrameBuffer == null) {
outputBuffer = viewPort.getOutputFrameBuffer();
}
Collection<Caps> caps = renderer.getCaps();
// antialiasing on filters only supported in opengl 3 due to depth read problem
if (numSamples > 1 && caps.contains(Caps.FrameBufferMultisample)) {
renderFrameBufferMS = new FrameBuffer(width, height, numSamples);
if (caps.contains(Caps.OpenGL31)) {
Texture2D msColor = new Texture2D(width, height, numSamples, Format.RGBA8);
Texture2D msDepth = new Texture2D(width, height, numSamples, Format.Depth);
renderFrameBufferMS.setDepthTexture(msDepth);
renderFrameBufferMS.setColorTexture(msColor);
filterTexture = msColor;
depthTexture = msDepth;
} else {
renderFrameBufferMS.setDepthBuffer(Format.Depth);
renderFrameBufferMS.setColorBuffer(Format.RGBA8);
}
}
if (numSamples <= 1 || !caps.contains(Caps.OpenGL31)) {
renderFrameBuffer = new FrameBuffer(width, height, 1);
renderFrameBuffer.setDepthBuffer(Format.Depth);
filterTexture = new Texture2D(width, height, Format.RGBA8);
renderFrameBuffer.setColorTexture(filterTexture);
}
for (Iterator<Filter> it = filters.iterator(); it.hasNext(); ) {
Filter filter = it.next();
initFilter(filter, vp);
}
if (renderFrameBufferMS != null) {
viewPort.setOutputFrameBuffer(renderFrameBufferMS);
} else {
viewPort.setOutputFrameBuffer(renderFrameBuffer);
}
}
