Patch Rendering

Using the Plop-Render mode, you can do a patch render of image. Patch rendering involves the rendering of background and flat elements using normal rendering and then using the Plop-Render controls to render areas that contain more complex elements.

There are two things you should remember when using patch rendering:

1. Make sure you use the Clear and Render button when you make changes to a partially rendered image.
2. If you stop a rendering, make changes and then click Resume Render, you'll end up with noise instead of an image.

If you change elements that don't affect a large area of your scene, you don't have to render the entire scene again. For example, if you render a scene with a floating sphere and then delete the sphere, you don't need to re-render the scene, only the area where the sphere was.

To patch render your image:

1. Start a render as normal.
2. Let the rendering proceed for two or three passes and then click the mouse.
3. Switch to Bitmap display mode.
4. Drag a marquee around key portions of your scene and then render those areas using the Plop-Render controls.

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