The rasterize (vector to raster) GDAL process now supports 3D data, in that it now includes the possibility to use the Z value (elevation) of a feature to extract burn values.
The use of this option indicates that a burn value should be extracted from the “Z” values of the feature. Works with points and lines (linear interpolation along each segment). For polygons, it only works properly if the features are flat (i.e. contain the same Z value for all vertices)
This feature was developed by talledodiego