Add format flag to ddscompress

Scripts/README.md

@@ -11,15 +11,16 @@ All files require python3 to be installed.
 ## Usage
 
 ### ddscompress.py
-usage: `ddscompress.py [-h] [--convertcmd CMD] [--compresscmd CMD] [files ...]`
+usage: `ddscompress.py [-h] [--format {auto,DXT1,DXT5}] [--convertcmd CMD] [--compresscmd CMD] [files ...]`
 
 Converts any number of files to `.dds` format, automatically choosing dxt1 or dxt5 depending on if the source image has anything in its alpha channel. Designed to be used with a glob, e.g: `ddscompress.py *.png`
 
-###### positional arguments:
+##### positional arguments:
 * `files`: input texture files
 
-###### optional arguments:
+##### optional arguments:
 * `-h, --help `: show this help message and exit
+* `--format {auto,DXT1,DXT5}`: output texture format (default: auto)
 * `--convertcmd CMD`: name of imagemagick's convert tool (default: `convert`)
 * `--compresscmd CMD`: name of the nvidia dds compress tool (default: `nvcompress`)
 
@@ -28,10 +29,10 @@ usage: `ddsdecompress.py [-h] [--decompresscmd CMD] [files ...]`
 
 Converts any number of files to `.tga` from `.dds`. Designed to be used with a glob, e.g: `ddsdecompress.py *.dds`
 
-###### positional arguments:
+##### positional arguments:
 * `files`: input dds files
 
-###### optional arguments:
+##### optional arguments:
 * `-h, --help`: show this help message and exit
 * `--decompresscmd CMD`: name of the nvidia dds decompress tool (default: `nvdecompress`)
 
@@ -40,10 +41,10 @@ usage: `ddsck.py [-h] [--convertcmd CMD] [--infocmd CMD] [files ...]`
 
 Checks any number of dds files for common issues, including formats not supported by KSP, and DXT5 textures that don't use the alpha channel. Designed to be used with a glob, e.g: `ddsck.py *.dds`
 
-###### positional arguments:
+##### positional arguments:
 * `files`: input dds files
 
-###### optional arguments:
+##### optional arguments:
 * `-h, --help`: show this help message and exit
 * `--convertcmd CMD`: name of imagemagick's convert tool (default: `convert`)
 * `--infocmd CMD`: name of the nvidia dds info tool (default: `nvddsinfo`)

Scripts/ddscompress.py

@@ -9,6 +9,7 @@ import dds
 
 parser = argparse.ArgumentParser(description="Converts any number of textures to dds format. automatically chooses dxt1 or dxt5 depending on if the source image has anything in its alpha channel.")
 parser.add_argument('files', type=str, nargs='*', help = "input texture files")
+parser.add_argument('--format', type=str, choices=['auto', 'DXT1', 'DXT5'], default = "auto", help = "output texture format (default: %(default)s)")
 parser.add_argument('--convertcmd', type=str, metavar='CMD', default="convert", help="name of imagemagick's convert tool (default: %(default)s)")
 parser.add_argument('--compresscmd', type=str, metavar='CMD', default="nvcompress", help="name of the nvidia dds compress tool (default: %(default)s)")
 
@@ -23,13 +24,13 @@ with tempfile.TemporaryDirectory() as tempDir:
         file = os.path.abspath(argv)
         tmpOutput = os.path.join(tempDir, os.path.basename(file))
         output = os.path.splitext(file)[0] + ".dds"
-        
+         
-        alpha = dds.alpha(file)
         dds.flip(file, tmpOutput)
-                    
+             
-        if alpha < 255:
+        if (args.format == "auto" and dds.alpha(file) < 255) or args.format == "DXT5":      
             format = "-bc3"
         else:
             format = "-bc1"
+
         dds.nvcompress(format, tmpOutput, output)
         os.remove(file)