Currently, SVG files that have filter tags in their XML are not respected by the RadPictureBox control. Sample code:
<filter ..>
<feGaussianBlur .. />
<feMorphology .. />
<feGaussianBlur .. />
<feColorMatrix .. />
<feComposite .. />
<feGaussianBlur .. />
<feDiffuseLighting ...>
<feDistantLight ... />
</feDiffuseLighting>
<feBlend .. />
<feComposite ../>
<feSpecularLighting ...>
<feDistantLight ../>
</feSpecularLighting>
<feComposite .. />
</filter>