Microsoft DirectDraw Surface (DDS) Writer
Licensing options for this format begin with FME Desktop Professional Edition.
The DDS Writer gives FME the ability to write raster data in the DirectDraw Surface (DDS) format.
Overview
A DDS (Microsoft DirectDraw Surface) file is a raster image saved in the DDS container format. DDS is a Microsoft format for storing data compressed with an S3 Texture Compression (S3TC) algorithm.
DDS files store compressed and uncompressed pixel formats that can be decompressed on the fly by hardware. These files are often used to store textures. DDS files use lossy compression, meaning you will lose detail and color information compared to the original texture. DDS files are represented as three 8-bit bands (RGB) or four 8-bit bands (RGBA).
Writer Overview
FME considers a writer dataset to be a folder name. The DDS writer distinguishes duplicate output files by appending numbers to the filenames.
FME Raster Features
FME raster features represent raster data and use several concepts that are unlike those used in the handling of vector data. The topics below describe how FME processes raster data.
DDS supports rasters with Red8, Green8, Blue8 bands, with an optional Alpha8 band.
DDS files can only be created with square pixel dimensions.