[gdal-dev] Support for Terrain-RGB

[Lars Ahlzen]

On 12/01/2026 15:17, Even Rouault wrote:
>> Certain creation options, like LOSSLESS=YES in the last example, may 
>> need to be passed on from the ENCODE_RGB driver to the actual output 
>> driver. Is that possible in general, or would it have to be handled 
>> as special cases for different formats?
>>
> You could require that such driver specific options are prefixed with 
> something like DRV_OPT_  and then strip that prefix when sending them 
> to the underlying driver 

That's probably the way to go. The last example would then be:

gdal raster tile --min-zoom 5 --max-zoom 15 --format ENCODE_RGB --co 
DRIVER=WEBP --co DRV_OPT_LOSSLESS=YES --co BANDS=RGB --co OFFSET=-10000 
--co SCALE=0.1 dem.tif rgb-tiles/

I can start looking at implementing such a driver. I assume this would 
warrant an RFC?

- Lars