etc1tool
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etc1tool is a command line utility that lets you encode PNG
images to the ETC1 compression standard and decode ETC1 compressed images back to PNG.
The usage for etc1tool is:
etc1tool infile [--help | --encode | --encodeNoHeader | --decode] [--showDifference
diff-file] [-o outfile]
This table lists the command options:
| Option |
Description |
infile |
The input file to compress. |
--help |
Print usage information. |
--encode |
Create an ETC1 file from a PNG file.
This is the default mode for the tool if nothing is specified. |
--encodeNoHeader |
Create a raw ETC1 data file without a header from a PNG file. |
--decode |
Create a PNG file from an ETC1 file. |
--showDifference diff-file |
Write the difference between the original and encoded image to
diff-file. This option is only valid when encoding. |
-o outfile |
Specify the name of the output file.
If outfile is not specified, the output file is constructed
from the input filename with the appropriate suffix (.pkm or .png).
|
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2023-04-12 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-04-12 UTC."],[],[],null,["# etc1tool\n\n`etc1tool` is a command line utility that lets you encode PNG\nimages to the [ETC1](https://registry.khronos.org/OpenGL/extensions/OES/OES_compressed_ETC1_RGB8_texture.txt) compression standard and decode ETC1 compressed images back to PNG.\n\nThe usage for `etc1tool` is: \n\n```\netc1tool infile [--help | --encode | --encodeNoHeader | --decode] [--showDifference\ndiff-file] [-o outfile]\n```\n\nThis table lists the command options:\n\n| Option | Description |\n|--------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `infile` | The input file to compress. |\n| `--help` | Print usage information. |\n| `--encode` | Create an ETC1 file from a PNG file. This is the default mode for the tool if nothing is specified. |\n| `--encodeNoHeader` | Create a raw ETC1 data file without a header from a PNG file. |\n| `--decode` | Create a PNG file from an ETC1 file. |\n| `--showDifference `*diff-file* | Write the difference between the original and encoded image to *diff-file*. This option is only valid when encoding. |\n| `-o `*outfile* | Specify the name of the output file. If *outfile* is not specified, the output file is constructed from the input filename with the appropriate suffix (`.pkm` or `.png`). |"]]
