@Deprecated
    public void addColorBuffer(Image.Format format) {
        if (id != -1) {
            throw new UnsupportedOperationException("FrameBuffer already initialized.");
        }

        if (format.isDepthFormat()) {
            throw new IllegalArgumentException("Color buffer format must be color/luminance.");
        }

        RenderBuffer colorBuf = new RenderBuffer();
        colorBuf.slot = colorBufs.size();
        colorBuf.format = format;

        colorBufs.add(colorBuf);
    }
Add a color buffer without a texture bound to it.
If MRT is enabled, then each subsequently added texture or buffer can be
rendered to through a shader that writes to the array <code>gl_FragData</code>.
If MRT is not enabled, then the index set with {@link FrameBuffer#setTargetIndex(int) }
is rendered to by the shader.

@param format the format of the color buffer
@see #addColorTexture(com.jme3.texture.Texture2D)
@deprecated Use addColorTarget
jme3-core/src/main/java/com/jme3/texture/FrameBuffer.java