#18 accessing images during creation

[Sascha Fricke]

I think it would be extremely useful if we'd be able to open the image file during rendering.
3delight does this for example (at least i know its openexr display driver is able to do that).
As I'm writing a renderman integration for Blender 2.5 as well as whiterabbit(i tthink dreamscapearts here on sourceforge) at least we both would benefit from this to be able to not only send the rendered images to blenders compositing but also watch it being rendered without the need of an extra framebuffer.