Examples of com.jme3.texture.FrameBuffer

com.jme3.ui.Picture

FrameBuffers are rendering surfaces allowing off-screen rendering and render-to-texture functionality. Instead of the scene rendering to the screen, it is rendered into the FrameBuffer, the result can be either a texture or a buffer.
A FrameBuffer supports two methods of rendering, using a {@link Texture} or using a buffer. When using a texture, the result of the rendering will be rendered onto the texture, after which the texture can be placed on an object and rendered as if the texture was uploaded from disk. When using a buffer, the result is rendered onto a buffer located on the GPU, the data of this buffer is not accessible to the user. buffers are useful if one wishes to retrieve only the color content of the scene, but still desires depth testing (which requires a depth buffer). Buffers can be copied to other framebuffers including the main screen, by using {@link Renderer#copyFrameBuffer(com.jme3.texture.FrameBuffer,com.jme3.texture.FrameBuffer) }. The content of a {@link RenderBuffer} can be retrieved by using {@link Renderer#readFrameBuffer(com.jme3.texture.FrameBuffer,java.nio.ByteBuffer) }.
FrameBuffers have several attachment points, there are several color attachment points and a single depth attachment point. The color attachment points support image formats such as {@link Format#RGBA8}, allowing rendering the color content of the scene. The depth attachment point requires a depth image format. @see Renderer#setFrameBuffer(com.jme3.texture.FrameBuffer) @author Kirill Vainer


        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);
        }

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         * @param numSamples
         */
        public void init(Renderer renderer, int width, int height, Format textureFormat, Format depthBufferFormat, int numSamples, boolean renderDepth) {
            Collection<Caps> caps = renderer.getCaps();
            if (numSamples > 1 && caps.contains(Caps.FrameBufferMultisample) && caps.contains(Caps.OpenGL31)) {
                renderFrameBuffer = new FrameBuffer(width, height, numSamples);                
                renderedTexture = new Texture2D(width, height, numSamples, textureFormat);
                renderFrameBuffer.setDepthBuffer(depthBufferFormat);
                if (renderDepth) {
                    depthTexture = new Texture2D(width, height, numSamples, depthBufferFormat);
                    renderFrameBuffer.setDepthTexture(depthTexture);
                }
            } else {
                renderFrameBuffer = new FrameBuffer(width, height, 1);
                renderedTexture = new Texture2D(width, height, textureFormat);
                renderFrameBuffer.setDepthBuffer(depthBufferFormat);
                if (renderDepth) {
                    depthTexture = new Texture2D(width, height, depthBufferFormat);
                    renderFrameBuffer.setDepthTexture(depthTexture);

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    private void reshapeInThread(int width, int height) {
        byteBuf = BufferUtils.ensureLargeEnough(byteBuf, width * height * 4);
        intBuf = byteBuf.asIntBuffer();
        
        fb = new FrameBuffer(width, height, 1);
        fb.setDepthBuffer(Format.Depth);
        fb.setColorBuffer(Format.RGB8);
        
        if (attachAsMain){
            rm.getRenderer().setMainFrameBufferOverride(fb);

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    public void reshape(ViewPort vp, int w, int h){
        if (mainSceneFB != null){
            renderer.deleteFrameBuffer(mainSceneFB);
        }


        mainSceneFB = new FrameBuffer(w, h, 1);
        mainScene = new Texture2D(w, h, bufFormat);
        mainSceneFB.setDepthBuffer(Format.Depth);
        mainSceneFB.setColorTexture(mainScene);
        mainScene.setMagFilter(fbMagFilter);
        mainScene.setMinFilter(fbMinFilter);


        if (msFB != null){
            renderer.deleteFrameBuffer(msFB);
        }


        tone.setTexture("Texture", mainScene);
        
        Collection<Caps> caps = renderer.getCaps();
        if (numSamples > 1 && caps.contains(Caps.FrameBufferMultisample)){
            msFB = new FrameBuffer(w, h, numSamples);
            msFB.setDepthBuffer(Format.Depth);
            msFB.setColorBuffer(bufFormat);
            vp.setOutputFrameBuffer(msFB);
        }else{
            if (numSamples > 1)

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        // loadInitial()
        fsQuad = new Picture("HDR Fullscreen Quad");


        Format lumFmt = Format.RGB8;
        scene64FB = new FrameBuffer(64, 64, 1);
        scene64 = new Texture2D(64, 64, lumFmt);
        scene64FB.setColorTexture(scene64);
        scene64.setMagFilter(fbMagFilter);
        scene64.setMinFilter(fbMinFilter);


        scene8FB = new FrameBuffer(8, 8, 1);
        scene8 = new Texture2D(8, 8, lumFmt);
        scene8FB.setColorTexture(scene8);
        scene8.setMagFilter(fbMagFilter);
        scene8.setMinFilter(fbMinFilter);


        scene1FB[0] = new FrameBuffer(1, 1, 1);
        scene1[0] = new Texture2D(1, 1, lumFmt);
        scene1FB[0].setColorTexture(scene1[0]);


        scene1FB[1] = new FrameBuffer(1, 1, 1);
        scene1[1] = new Texture2D(1, 1, lumFmt);
        scene1FB[1].setColorTexture(scene1[1]);


        // prepare tonemap shader
        tone = new Material(manager, "Common/MatDefs/Hdr/ToneMap.j3md");

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     * Creates a BasicShadowRenderer
     * @param manager the asset manager
     * @param size the size of the shadow map (the map is square)
     */
    public BasicShadowRenderer(AssetManager manager, int size) {
        shadowFB = new FrameBuffer(size, size, 1);
        shadowMap = new Texture2D(size, size, Format.Depth);
        shadowFB.setDepthTexture(shadowMap);
        shadowCam = new Camera(size, size);
        
         //DO NOT COMMENT THIS (it prevent the OSX incomplete read buffer crash)

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        preshadowMat = new Material(manager, "Common/MatDefs/Shadow/PreShadow.j3md");
        postshadowMat.setFloat("ShadowMapSize", size);


        for (int i = 0; i < nbSplits; i++) {
            lightViewProjectionsMatrices[i] = new Matrix4f();
            shadowFB[i] = new FrameBuffer(size, size, 1);
            shadowMaps[i] = new Texture2D(size, size, Format.Depth);


            shadowFB[i].setDepthTexture(shadowMaps[i]);


            //DO NOT COMMENT THIS (it prevent the OSX incomplete read buffer crash)

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        preshadowMat = new Material(assetManager, "Common/MatDefs/Shadow/PreShadow.j3md");
        postshadowMat.setFloat("ShadowMapSize", shadowMapSize);


        for (int i = 0; i < nbShadowMaps; i++) {
            lightViewProjectionsMatrices[i] = new Matrix4f();
            shadowFB[i] = new FrameBuffer(shadowMapSize, shadowMapSize, 1);
            shadowMaps[i] = new Texture2D(shadowMapSize, shadowMapSize, Format.Depth);


            shadowFB[i].setDepthTexture(shadowMaps[i]);


            //DO NOT COMMENT THIS (it prevent the OSX incomplete read buffer crash)

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    */
    Geometry g = new Geometry("Bubble", b);
    g.rotate(FastMath.HALF_PI, 0, FastMath.HALF_PI);
    //g.scale(1, 1, -1);
    Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
    Texture tex = assetManager.loadTexture("Textures/test3.png");
    mat.setTexture("ColorMap", tex);
    //mat.setColor("Color", ColorRGBA.Blue);
    //mat.getAdditionalRenderState().setFaceCullMode(FaceCullMode.Off);
    g.setMaterial(mat);

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  public void initialize(AppStateManager stateManager, Application app){
    super.initialize(stateManager, app);
    assetManager = app.getAssetManager();
    settings = app.getContext().getSettings();
    
    Picture pic = new Picture("HUD Picture");
    pic.setImage(assetManager, "Hud/InfoBox2.png", true);
    pic.setHeight(settings.getHeight());
    pic.setWidth(settings.getHeight()/2);
    pic.setPosition(settings.getWidth()-settings.getHeight()/2, 0);
    menuNode.attachChild(pic);
    
    
    /*Quad q = new Quad(6, 3);
        Geometry g = new Geometry("quad", q);

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