sanya-dbms/grassprovider/description/r.composite.txt

r.composite
Combines red, green and blue raster maps into a single composite raster map.
Raster (r.*)
QgsProcessingParameterRasterLayer|red|Red|None|False
QgsProcessingParameterRasterLayer|green|Green|None|False
QgsProcessingParameterRasterLayer|blue|Blue|None|False
QgsProcessingParameterNumber|levels|Number of levels to be used for each component|QgsProcessingParameterNumber.Integer|32|True|1|256
QgsProcessingParameterNumber|level_red|Number of levels to be used for <red>|QgsProcessingParameterNumber.Integer|None|True|1|256
QgsProcessingParameterNumber|level_green|Number of levels to be used for <green>|QgsProcessingParameterNumber.Integer|None|True|1|256
QgsProcessingParameterNumber|level_blue|Number of levels to be used for <blue>|QgsProcessingParameterNumber.Integer|None|True|1|256
QgsProcessingParameterBoolean|-d|Dither|False
QgsProcessingParameterBoolean|-c|Use closest color|False
QgsProcessingParameterRasterDestination|output|Composite