Blend two Vulkan frames into each other.

The blend filter takes two input streams and outputs one stream, the first input is the "top" layer and second input is "bottom" layer. By default, the output terminates when the longest input terminates.

A description of the accepted options follows.

c0_mode, c1_mode, c2_mode, c3_mode, all_mode

Set blend mode for specific pixel component or all pixel components in case of all_mode. Default value is normal.

Available values for component modes are:

• normal
• multiply