The screen in the above screenshot is a picture layer using a texture created by a colourmap layer. By pasting another show inside the colourmap layer (<Control> M), you can play a show inside a show.
With the colourmap layer you can generate colourmap textures for use in other layers.
Choose LAYER > Add layer > Add colourmap layer... to create a new colourmap layer.
The new colourmap layer can be selected from the layers dropdown to make it the active layer.
The installer comes with shows demonstrating the possibilities of the colourmap layer. Choose FILE > Open show... and select a show from the BluffTitler/Media/Shows/Colourmap folder.
To quickly switch between your own shows and the ones that come with the installer, click on the Personal and App buttons in the upper right corner of the file dialog.
The colourmap layer does not render anything. Instead, it creates a colourmap texture in memory that can be used by other layers.
Any effect that can use a colourmap, can also use the output of a colourmap layer. Examples are:
Click on the Select colourmap layer button in the Change textures and effect dialog.
A colourmap layer is like a show inside a show. The only difference is that the output is not rendered to screen, but to a texture.
Make the colourmap layer the active layer before creating the new layer.
Choose LAYER > Attach layer > Attach active layer.
Make the colourmap layer the active layer and press <Control> M to import a show inside the colourmap layer.
Click <Control> B to export the active colourmap layer as a show.
Make the colourmap layer the active layer and click on the Delete all active layers button to clear the colourmap layer.
The generated colourmap is a 32 bits per pixel RGBA texture.
The generated colourmap is a 64 bits per pixel RGBA texture. This can be necessary when the colourmap is used as a displacementmap.
The resolution of the texture that will be generated. A higher resolution looks sharper but requires more memory and is slower.
The background colour.
The transparency of the background.