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authorRémi Verschelde <rverschelde@gmail.com>2017-11-05 11:37:59 +0100
committerRémi Verschelde <rverschelde@gmail.com>2017-11-05 11:37:59 +0100
commit5bc2cf257b46b7ba52c95e43c9b0f91f6e06998e (patch)
treefe226ce29e8cef979492b4778c65bab6109191e5 /thirdparty/etc2comp
parenta89fa34c21103430b1d140ee04c3ae6a433d77ce (diff)
downloadredot-engine-5bc2cf257b46b7ba52c95e43c9b0f91f6e06998e.tar.gz
Convert DOS line endings to Unix line endings
Should fix issues some of us have with `misc/dist/uwp_template/AppxManifest.xml` always showing up as modified. Might cause issues on Windows due to the removal of BOMs or change of line endings in some of the Mono, UWP or gradlew.bat files, we will test and adapt if need be.
Diffstat (limited to 'thirdparty/etc2comp')
-rw-r--r--thirdparty/etc2comp/AUTHORS14
-rw-r--r--thirdparty/etc2comp/LICENSE404
-rw-r--r--thirdparty/etc2comp/README.md394
3 files changed, 406 insertions, 406 deletions
diff --git a/thirdparty/etc2comp/AUTHORS b/thirdparty/etc2comp/AUTHORS
index 32daca27fe..e78a7f4d21 100644
--- a/thirdparty/etc2comp/AUTHORS
+++ b/thirdparty/etc2comp/AUTHORS
@@ -1,7 +1,7 @@
-# This is the list of Etc2Comp authors for copyright purposes.
-#
-# This does not necessarily list everyone who has contributed code, since in
-# some cases, their employer may be the copyright holder. To see the full list
-# of contributors, see the revision history in source control.
-Google Inc.
-Blue Shift Inc.
+# This is the list of Etc2Comp authors for copyright purposes.
+#
+# This does not necessarily list everyone who has contributed code, since in
+# some cases, their employer may be the copyright holder. To see the full list
+# of contributors, see the revision history in source control.
+Google Inc.
+Blue Shift Inc.
diff --git a/thirdparty/etc2comp/LICENSE b/thirdparty/etc2comp/LICENSE
index 75b52484ea..d645695673 100644
--- a/thirdparty/etc2comp/LICENSE
+++ b/thirdparty/etc2comp/LICENSE
@@ -1,202 +1,202 @@
-
- Apache License
- Version 2.0, January 2004
- http://www.apache.org/licenses/
-
- TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
- 1. Definitions.
-
- "License" shall mean the terms and conditions for use, reproduction,
- and distribution as defined by Sections 1 through 9 of this document.
-
- "Licensor" shall mean the copyright owner or entity authorized by
- the copyright owner that is granting the License.
-
- "Legal Entity" shall mean the union of the acting entity and all
- other entities that control, are controlled by, or are under common
- control with that entity. For the purposes of this definition,
- "control" means (i) the power, direct or indirect, to cause the
- direction or management of such entity, whether by contract or
- otherwise, or (ii) ownership of fifty percent (50%) or more of the
- outstanding shares, or (iii) beneficial ownership of such entity.
-
- "You" (or "Your") shall mean an individual or Legal Entity
- exercising permissions granted by this License.
-
- "Source" form shall mean the preferred form for making modifications,
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- source, and configuration files.
-
- "Object" form shall mean any form resulting from mechanical
- transformation or translation of a Source form, including but
- not limited to compiled object code, generated documentation,
- and conversions to other media types.
-
- "Work" shall mean the work of authorship, whether in Source or
- Object form, made available under the License, as indicated by a
- copyright notice that is included in or attached to the work
- (an example is provided in the Appendix below).
-
- "Derivative Works" shall mean any work, whether in Source or Object
- form, that is based on (or derived from) the Work and for which the
- editorial revisions, annotations, elaborations, or other modifications
- represent, as a whole, an original work of authorship. For the purposes
- of this License, Derivative Works shall not include works that remain
- separable from, or merely link (or bind by name) to the interfaces of,
- the Work and Derivative Works thereof.
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- "Contribution" shall mean any work of authorship, including
- the original version of the Work and any modifications or additions
- to that Work or Derivative Works thereof, that is intentionally
- submitted to Licensor for inclusion in the Work by the copyright owner
- or by an individual or Legal Entity authorized to submit on behalf of
- the copyright owner. For the purposes of this definition, "submitted"
- means any form of electronic, verbal, or written communication sent
- to the Licensor or its representatives, including but not limited to
- communication on electronic mailing lists, source code control systems,
- and issue tracking systems that are managed by, or on behalf of, the
- Licensor for the purpose of discussing and improving the Work, but
- excluding communication that is conspicuously marked or otherwise
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- 2. Grant of Copyright License. Subject to the terms and conditions of
- this License, each Contributor hereby grants to You a perpetual,
- worldwide, non-exclusive, no-charge, royalty-free, irrevocable
- copyright license to reproduce, prepare Derivative Works of,
- publicly display, publicly perform, sublicense, and distribute the
- Work and such Derivative Works in Source or Object form.
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- 3. Grant of Patent License. Subject to the terms and conditions of
- this License, each Contributor hereby grants to You a perpetual,
- worldwide, non-exclusive, no-charge, royalty-free, irrevocable
- (except as stated in this section) patent license to make, have made,
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- or a Contribution incorporated within the Work constitutes direct
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- granted to You under this License for that Work shall terminate
- as of the date such litigation is filed.
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- 4. Redistribution. You may reproduce and distribute copies of the
- Work or Derivative Works thereof in any medium, with or without
- modifications, and in Source or Object form, provided that You
- meet the following conditions:
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- (a) You must give any other recipients of the Work or
- Derivative Works a copy of this License; and
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- any Contribution intentionally submitted for inclusion in the Work
- by You to the Licensor shall be under the terms and conditions of
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- the terms of any separate license agreement you may have executed
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- PARTICULAR PURPOSE. You are solely responsible for determining the
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- 8. Limitation of Liability. In no event and under no legal theory,
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- Work (including but not limited to damages for loss of goodwill,
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- of any other Contributor, and only if You agree to indemnify,
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- END OF TERMS AND CONDITIONS
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- To apply the Apache License to your work, attach the following
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- Unless required by applicable law or agreed to in writing, software
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- See the License for the specific language governing permissions and
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+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+ Copyright [yyyy] [name of copyright owner]
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
diff --git a/thirdparty/etc2comp/README.md b/thirdparty/etc2comp/README.md
index 1c70ae9f4e..2f4363d042 100644
--- a/thirdparty/etc2comp/README.md
+++ b/thirdparty/etc2comp/README.md
@@ -1,197 +1,197 @@
-# Etc2Comp - Texture to ETC2 compressor
-
-Etc2Comp is a command line tool that converts textures (e.g. bitmaps)
-into the [ETC2](https://en.wikipedia.org/wiki/Ericsson_Texture_Compression)
-format. The tool is built with a focus on encoding performance
-to reduce the amount of time required to compile asset heavy applications as
-well as reduce overall application size.
-
-This repo provides source code that can be compiled into a binary. The
-binary can then be used to convert textures to the ETC2 format.
-
-Important: This is not an official Google product. It is an experimental
-library published as-is. Please see the CONTRIBUTORS.md file for information
-about questions or issues.
-
-## Setup
-This project uses [CMake](https://cmake.org/) to generate platform-specific
-build files:
- - Linux: make files
- - OS X: Xcode workspace files
- - Microsoft Windows: Visual Studio solution files
- - Note: CMake supports other formats, but this doc only provides steps for
- one of each platform for brevity.
-
-Refer to each platform's setup section to setup your environment and build
-an Etc2Comp binary. Then skip to the usage section of this page for examples
-of how to use the library.
-
-### Setup for OS X
- build tested on this config:
- OS X 10.9.5 i7 16GB RAM
- Xcode 5.1.1
- cmake 3.2.3
-
-Start by downloading and installing the following components if they are not
-already installed on your development machine.
- - *Xcode* version 5.1.1, or greater
- - [CMake](https://cmake.org/download/) version 3.2.3, or greater
-
-To build the Etc2Comp binary:
- 1. Open a *Terminal* window and navigate to the project directory.
- 1. Run `mkdir build_xcode`
- 1. Run `cd build_xcode`
- 1. Run `cmake -G Xcode ../`
- 1. Open *Xcode* and import the `build_xcode/EtcTest.xcodeproj` file.
- 1. Open the Product menu and choose Build For -> Running.
- 1. Once the build succeeds the binary located at `build_xcode/EtcTool/Debug/EtcTool`
-can be executed.
-
-Optional
-Xcode EtcTool ‘Run’ preferences
-note: if the build_xcode/EtcTest.xcodeproj is manually deleted then some Xcode preferences
-will need to be set by hand after cmake is run (these prefs are retained across
-cmake updates if the .xcodeproj is not deleted/removed)
-
-1. Set the active scheme to ‘EtcTool’
-1. Edit the scheme
-1. Select option ‘Run EtcTool’, then tab ‘Arguments’.
-Add this launch argument: ‘-argfile ../../EtcTool/args.txt’
-1. Select tab ‘Options’ and set a custom working directory to: ‘$(SRCROOT)/Build_Xcode/EtcTool’
-
-### SetUp for Windows
-
-1. Open a *Terminal* window and navigate to the project directory.
-1. Run `mkdir build_vs`
-1. Run `cd build_vs`
-1. Run CMAKE, noting what build version you need, and pointing to the parent directory as the source root;
- For VS 2013 : `cmake -G "Visual Studio 12 2013 Win64" ../`
- For VS 2015 : `cmake -G "Visual Studio 14 2015 Win64" ../`
- NOTE: To see what supported Visual Studio outputs there are, run `cmake -G`
-1. open the 'EtcTest' solution
-1. make the 'EtcTool' project the start up project
-1. (optional) in the project properties, under 'Debugging ->command arguments'
-add the argfile textfile thats included in the EtcTool directory.
-example: -argfile C:\etc2\EtcTool\Args.txt
-
-### Setup For Linux
-The Linux build was tested on this config:
- Ubuntu desktop 14.04
- gcc/g++ 4.8
- cmake 2.8.12.2
-
-1. Verify linux has cmake and C++-11 capable g++ installed
-1. Open shell
-1. Run `mkdir build_linux`
-1. Run `cd build_linux`
-1. Run `cmake ../`
-1. Run `make`
-1. navigate to the newly created EtcTool directory `cd EtcTool`
-1. run the executable: `./EtcTool -argfile ../../EtcTool/args.txt`
-
-Skip to the <a href="#usage">Usage</a> section for more information about using the
-tool.
-
-## Usage
-
-### Command Line Usage
-EtcTool can be run from the command line with the following usage:
- etctool.exe source_image [options ...] -output encoded_image
-
-The encoder will use an array of RGBA floats read from the source_image to create
-an ETC1 or ETC2 encoded image in encoded_image. The RGBA floats should be in the
-range [0:1].
-
-Options:
-
- -analyze <analysis_folder>
- -argfile <arg_file> additional command line arguments read from a file
- -blockAtHV <H V> encodes a single block that contains the
- pixel specified by the H V coordinates
- -compare <comparison_image> compares source_image to comparison_image
- -effort <amount> number between 0 and 100 to specify the encoding quality
- (100 is the highest quality)
- -errormetric <error_metric> specify the error metric, the options are
- rgba, rgbx, rec709, numeric and normalxyz
- -format <etc_format> ETC1, RGB8, SRGB8, RGBA8, SRGB8, RGB8A1,
- SRGB8A1 or R11
- -help prints this message
- -jobs or -j <thread_count> specifies the number of threads (default=1)
- -normalizexyz normalize RGB to have a length of 1
- -verbose or -v shows status information during the encoding
- process
- -mipmaps or -m <mip_count> sets the maximum number of mipaps to generate (default=1)
- -mipwrap or -w <x|y|xy> sets the mipmap filter wrap mode (default=clamp)
-
-* -analyze will run an analysis of the encoding and place it in folder
-"analysis_folder" (e.g. ../analysis/kodim05). within the analysis_folder, a folder
-will be created with a name of the current date/time (e.g. 20151204_153306). this
-date/time folder is used to compare encodings of the same texture over time.
-within the date/time folder is a text file with several encoding stats and a 2x png
-image showing the encoding mode for each 4x4 block.
-
-* -argfile allows additional command line arguments to be placed in a text file
-
-* -blockAtHV selects the 4x4 pixel subset of the source image at position (H,V).
-This is mainly used for debugging
-
-* -compare compares the source image to the created encoded image. The encoding
-will dictate what error analysis is used in the comparison.
-
-* -effort uses an "amount" between 0 and 100 to determine how much additional effort
-to apply during the encoding.
-
-* -errormetric selects the fitting algorithm used by the encoder. "rgba" calculates
-RMS error using RGB components that are weighted by A. "rgbx" calculates RMS error
-using RGBA components, where A is treated as an additional data channel, instead of
-as alpha. "rec709" is similar to "rgba", except the RGB components are also weighted
-according to Rec709. "numeric" calculates RMS error using unweighted RGBA components.
-"normalize" calculates error based on dot product and vector length for RGB and RMS
-error for A.
-
-* -help prints out the usage message
-
-* -jobs enables multi-threading to speed up image encoding
-
-* -normalizexyz normalizes the source RGB to have a length of 1.
-
-* -verbose shows information on the current encoding process. It will then display the
-PSNR and time time it took to encode the image.
-
-* -mipmaps takes an argument that specifies how many mipmaps to generate from the
-source image. The mipmaps are generated with a lanczos3 filter using edge clamping.
-If the mipmaps option is not specified no mipmaps are created.
-
-* -mipwrap takes an argument that specifies the mipmap filter wrap mode. The options
-are "x", "y" and "xy" which specify wrapping in x only, y only or x and y respectively.
-The default options are clamping in both x and y.
-
-Note: Path names can use slashes or backslashes. The tool will convert the
-slashes to the appropriate polarity for the current platform.
-
-
-## API
-
-The library supports two different APIs - a C-like API that is not heavily
-class-based and a class-based API.
-
-main() in EtcTool.cpp contains an example of both APIs.
-
-The Encode() method now returns an EncodingStatus that contains bit flags for
-reporting various warnings and flags encountered when encoding.
-
-
-## Copyright
-Copyright 2015 Etc2Comp Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
+# Etc2Comp - Texture to ETC2 compressor
+
+Etc2Comp is a command line tool that converts textures (e.g. bitmaps)
+into the [ETC2](https://en.wikipedia.org/wiki/Ericsson_Texture_Compression)
+format. The tool is built with a focus on encoding performance
+to reduce the amount of time required to compile asset heavy applications as
+well as reduce overall application size.
+
+This repo provides source code that can be compiled into a binary. The
+binary can then be used to convert textures to the ETC2 format.
+
+Important: This is not an official Google product. It is an experimental
+library published as-is. Please see the CONTRIBUTORS.md file for information
+about questions or issues.
+
+## Setup
+This project uses [CMake](https://cmake.org/) to generate platform-specific
+build files:
+ - Linux: make files
+ - OS X: Xcode workspace files
+ - Microsoft Windows: Visual Studio solution files
+ - Note: CMake supports other formats, but this doc only provides steps for
+ one of each platform for brevity.
+
+Refer to each platform's setup section to setup your environment and build
+an Etc2Comp binary. Then skip to the usage section of this page for examples
+of how to use the library.
+
+### Setup for OS X
+ build tested on this config:
+ OS X 10.9.5 i7 16GB RAM
+ Xcode 5.1.1
+ cmake 3.2.3
+
+Start by downloading and installing the following components if they are not
+already installed on your development machine.
+ - *Xcode* version 5.1.1, or greater
+ - [CMake](https://cmake.org/download/) version 3.2.3, or greater
+
+To build the Etc2Comp binary:
+ 1. Open a *Terminal* window and navigate to the project directory.
+ 1. Run `mkdir build_xcode`
+ 1. Run `cd build_xcode`
+ 1. Run `cmake -G Xcode ../`
+ 1. Open *Xcode* and import the `build_xcode/EtcTest.xcodeproj` file.
+ 1. Open the Product menu and choose Build For -> Running.
+ 1. Once the build succeeds the binary located at `build_xcode/EtcTool/Debug/EtcTool`
+can be executed.
+
+Optional
+Xcode EtcTool ‘Run’ preferences
+note: if the build_xcode/EtcTest.xcodeproj is manually deleted then some Xcode preferences
+will need to be set by hand after cmake is run (these prefs are retained across
+cmake updates if the .xcodeproj is not deleted/removed)
+
+1. Set the active scheme to ‘EtcTool’
+1. Edit the scheme
+1. Select option ‘Run EtcTool’, then tab ‘Arguments’.
+Add this launch argument: ‘-argfile ../../EtcTool/args.txt’
+1. Select tab ‘Options’ and set a custom working directory to: ‘$(SRCROOT)/Build_Xcode/EtcTool’
+
+### SetUp for Windows
+
+1. Open a *Terminal* window and navigate to the project directory.
+1. Run `mkdir build_vs`
+1. Run `cd build_vs`
+1. Run CMAKE, noting what build version you need, and pointing to the parent directory as the source root;
+ For VS 2013 : `cmake -G "Visual Studio 12 2013 Win64" ../`
+ For VS 2015 : `cmake -G "Visual Studio 14 2015 Win64" ../`
+ NOTE: To see what supported Visual Studio outputs there are, run `cmake -G`
+1. open the 'EtcTest' solution
+1. make the 'EtcTool' project the start up project
+1. (optional) in the project properties, under 'Debugging ->command arguments'
+add the argfile textfile thats included in the EtcTool directory.
+example: -argfile C:\etc2\EtcTool\Args.txt
+
+### Setup For Linux
+The Linux build was tested on this config:
+ Ubuntu desktop 14.04
+ gcc/g++ 4.8
+ cmake 2.8.12.2
+
+1. Verify linux has cmake and C++-11 capable g++ installed
+1. Open shell
+1. Run `mkdir build_linux`
+1. Run `cd build_linux`
+1. Run `cmake ../`
+1. Run `make`
+1. navigate to the newly created EtcTool directory `cd EtcTool`
+1. run the executable: `./EtcTool -argfile ../../EtcTool/args.txt`
+
+Skip to the <a href="#usage">Usage</a> section for more information about using the
+tool.
+
+## Usage
+
+### Command Line Usage
+EtcTool can be run from the command line with the following usage:
+ etctool.exe source_image [options ...] -output encoded_image
+
+The encoder will use an array of RGBA floats read from the source_image to create
+an ETC1 or ETC2 encoded image in encoded_image. The RGBA floats should be in the
+range [0:1].
+
+Options:
+
+ -analyze <analysis_folder>
+ -argfile <arg_file> additional command line arguments read from a file
+ -blockAtHV <H V> encodes a single block that contains the
+ pixel specified by the H V coordinates
+ -compare <comparison_image> compares source_image to comparison_image
+ -effort <amount> number between 0 and 100 to specify the encoding quality
+ (100 is the highest quality)
+ -errormetric <error_metric> specify the error metric, the options are
+ rgba, rgbx, rec709, numeric and normalxyz
+ -format <etc_format> ETC1, RGB8, SRGB8, RGBA8, SRGB8, RGB8A1,
+ SRGB8A1 or R11
+ -help prints this message
+ -jobs or -j <thread_count> specifies the number of threads (default=1)
+ -normalizexyz normalize RGB to have a length of 1
+ -verbose or -v shows status information during the encoding
+ process
+ -mipmaps or -m <mip_count> sets the maximum number of mipaps to generate (default=1)
+ -mipwrap or -w <x|y|xy> sets the mipmap filter wrap mode (default=clamp)
+
+* -analyze will run an analysis of the encoding and place it in folder
+"analysis_folder" (e.g. ../analysis/kodim05). within the analysis_folder, a folder
+will be created with a name of the current date/time (e.g. 20151204_153306). this
+date/time folder is used to compare encodings of the same texture over time.
+within the date/time folder is a text file with several encoding stats and a 2x png
+image showing the encoding mode for each 4x4 block.
+
+* -argfile allows additional command line arguments to be placed in a text file
+
+* -blockAtHV selects the 4x4 pixel subset of the source image at position (H,V).
+This is mainly used for debugging
+
+* -compare compares the source image to the created encoded image. The encoding
+will dictate what error analysis is used in the comparison.
+
+* -effort uses an "amount" between 0 and 100 to determine how much additional effort
+to apply during the encoding.
+
+* -errormetric selects the fitting algorithm used by the encoder. "rgba" calculates
+RMS error using RGB components that are weighted by A. "rgbx" calculates RMS error
+using RGBA components, where A is treated as an additional data channel, instead of
+as alpha. "rec709" is similar to "rgba", except the RGB components are also weighted
+according to Rec709. "numeric" calculates RMS error using unweighted RGBA components.
+"normalize" calculates error based on dot product and vector length for RGB and RMS
+error for A.
+
+* -help prints out the usage message
+
+* -jobs enables multi-threading to speed up image encoding
+
+* -normalizexyz normalizes the source RGB to have a length of 1.
+
+* -verbose shows information on the current encoding process. It will then display the
+PSNR and time time it took to encode the image.
+
+* -mipmaps takes an argument that specifies how many mipmaps to generate from the
+source image. The mipmaps are generated with a lanczos3 filter using edge clamping.
+If the mipmaps option is not specified no mipmaps are created.
+
+* -mipwrap takes an argument that specifies the mipmap filter wrap mode. The options
+are "x", "y" and "xy" which specify wrapping in x only, y only or x and y respectively.
+The default options are clamping in both x and y.
+
+Note: Path names can use slashes or backslashes. The tool will convert the
+slashes to the appropriate polarity for the current platform.
+
+
+## API
+
+The library supports two different APIs - a C-like API that is not heavily
+class-based and a class-based API.
+
+main() in EtcTool.cpp contains an example of both APIs.
+
+The Encode() method now returns an EncodingStatus that contains bit flags for
+reporting various warnings and flags encountered when encoding.
+
+
+## Copyright
+Copyright 2015 Etc2Comp Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.