diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..940794e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,288 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+
+# Visual Studio 2015 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+**/Properties/launchSettings.json
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding add-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# TODO: Comment the next line if you want to checkin your web deploy settings
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/packages/*
+# except build/, which is used as an MSBuild target.
+!**/packages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/packages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Typescript v1 declaration files
+typings/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# CodeRush
+.cr/
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..0a5135f
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Roope Mäkinen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index bde6151..9055d35 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,72 @@
-# 4k_synthwave
+# Leviathan 2.0
+Leviathan is a simple "framework" for developing small (around 1-8 kilobyte) [Demoscene](https://en.wikipedia.org/wiki/Demoscene) productions. It is primarily developed for creating the [Prismbeings](https://www.pouet.net/groups.php?which=12646) 4k Intros. "Intro" is parlance for a size-wise small Demo.
+## "Features"
+* Kept as simple as possible, made for productivity.
+* No external dependencies, instantly ready for development.
+* Readymade configurations for different use cases.
+* Automated shader minification upon compilation.
+* Simple unintrusive editor mode with seeking and hot reloading.
+* Easy to customize for your needs.
+
+## Compatibility
+Current version intended to be used with Visual Studio 2017 (any version). Make sure you have a version with the latest Windows SDK installed (at least version 10.0.17134.0), or use version 8.1. With some extra configuration 2015 and 2013 should work as well. Leviathan is is very Windows-specific and isn't really sensibly portable anywhere else.
+
+### Components
+Leviathan requires these componens to be installed with the Visual Studio configuration. Run the Visual Studio Installer to check you have at least these installed:
+* **VC++ 2017 version 15.9 v14.16 latest v141 tools**, or VC++ 2015.3 v14.00 (v140)
+* **Windows 10 SDK** (any version should be fine, Leviathan currently defaults to 10.0.17134.0, change as needed) or Windows 8.1 SDK
+* Windows Universal CRT SDK
+* Windows Universal C Runtime
+
+## Configurations
+This section describes the different build configurations available from Visual Studio IDE
+### Heavy Release
+Uses heavier Crinkler settings to squeeze out maximum compression (note though that the /VERYSLOW flag could sometimes backfire and produce a larger executable). Also doesn't do shader minification since it assumes the user is performing hand minifications to the .inl source, which would be overwritten by the Shader Minifier.
+### Release
+Generally recommended for producing a final executable to be released. Uses moderate Crinkler settings.
+### Snapshot
+Use for general development. Only minimal crinklering but nothing extra included. Useful still for keeping track of relative size changes. This configuration overwrites Release configuration binaries, but doesn't generate and overwrite crinkler report.
+### Debug
+Deprecated, might work but currently not really useful and not updated. Editor covers everything in this configuration.
+### Editor
+Creates a bigger exe similar to Debug, but with keyboard controls for pausing and seeking around temporally. Requires a pre-rendered copy of the audio track used (well, not a must but...). Overwrites Debug configuration binaries.
+
+## Build Flags
+This section describes the preprocessor definitions available for various features and size optimizations.
+### OPENGL_DEBUG
+Checks for shader compilation errors on initialization. Also enables to use the CHECK_ERRORS macro on debug.h. You want to leave this disabled in the final release obviously.
+### FULLSCREEN
+Changes the display mode to fullscreen instead of a static window. You want to use this in your final release but probably not while developing and debugging. Disabling this saves around 20 bytes.
+### DESPERATE
+Enabling this disables message handling, which isn't strictly necessary but makes running the intro much more reliable and compatible. Enabling this saves around 20 bytes.
+### BREAK_COMPATIBILITY
+Enabling this uses a pixel format descriptor that uses parameters that are mostly zeroes. This improves the compressability at the cost of violating the API specifications. You might be able to run your intro currently, but might break in the future or on other peoples' configurations right now. Enabling this saves around 5 bytes.
+### POST_PASS
+Enables using the OpenGL backbuffer as a framebuffer and texture to perform simple post processing or other functionality.
+### USE_MIPMAPS
+Generates mipmaps for the backbuffer texture.
+### USE_AUDIO
+Disabling this doesn't include or init 4klang at all.
+### NO_UNIFORMS
+Enables using the gl_Color vertex attribute to pass variables to the shader instead of the usual uniform uploading. This saves one function import and around 10 bytes.
+
+## Contributing
+Fork your own and submit a pull request, ideas always welcome. Please don't add any additional dependencies unless it's a single-file-header library or something similar, and non-GPL licensed. Inclusion of CMake or other such tools is also not considered.
+
+## TODO
+* Automatically render and dump audio in Editor mode if no .wav already exists.
+* Support for more softsynths?
+* Editor mode overlays (non-interactive seekbar, etc.).
+* More functionality to add further render passes easily.
+* Continue Structuring the code better so not everything is inlined in the main loop.
+* Write out a version in assembly to use in the Release configuration.
+
+## Acknowledgements
+* Rimina for initial motivation and OpenGL debug functions.
+* LJ for giving suggestions for some nice hacks.
+* Fizzer for help with implementing some of said hacks.
+* iq for the original 4k intro framework.
+* Mentor and Blueberry for Crinkler.
+* LLB for Shader Minifier.
+* Numerous people for various resources and information: auld, ps, cce, msqrt, ferris, yzi, las to name a few.
diff --git a/crinkler-license.txt b/crinkler-license.txt
new file mode 100644
index 0000000..c5f3514
--- /dev/null
+++ b/crinkler-license.txt
@@ -0,0 +1,55 @@
+
+Crinkler - compressing linker for Windows
+Copyright 2005-2019 Aske Simon Christensen and Rune L. H. Stubbe.
+
+
+DISTRIBUTION
+
+Crinkler is freeware. You may distribute it freely, as long as the
+Crinkler executable and all accompanying documentation files are kept
+together and intact. You may not distribute modified versions or any
+kind of derived work based on Crinkler or its documentation.
+
+USE AND AUTHOR RIGHTS
+
+The output of Crinkler (executable files, HTML compression reports
+and other textual output) is to be considered the original works of
+you as a user of Crinkler. You may use Crinkler and its output for
+any legal purpose with the following restrictions:
+- You may not use Crinkler or its output for any commercial purpose.
+- You may not use Crinkler or its output in any setting where security
+ is essential.
+- You may not use Crinkler or its output for any safety critical
+ purpose.
+- You may not use Crinkler or its output in the production of any
+ virus, worm, trojan, spyware or other malicious software.
+
+NO WARRANTY
+
+Crinkler comes with no warranties of any kind. Crinkler is
+experimental software that relies on many undocumented features of the
+Windows PE loader. It has been created with the sole purpose of
+producing tiny executable files that may or may not work as intended
+on current and/or future versions of Windows.
+
+LICENSE OF DISTORM
+
+Crinkler uses the BSD-licensed diStorm disassembler library for
+producing disassembly output of the compressed code. The license for
+diStorm requires that the license below is included with derivative
+works. The license below applies only to diStorm and not to Crinkler
+as a whole.
+
+
+:[diStorm64}:
+The ultimate disassembler library.
+Copyright (c) 2003,2004,2005,2006,2007,2008, Gil Dabah
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ * Neither the name of the diStorm nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/crinkler-manual.txt b/crinkler-manual.txt
new file mode 100644
index 0000000..f54b7ce
--- /dev/null
+++ b/crinkler-manual.txt
@@ -0,0 +1,1229 @@
+
+CRINKLER - Compressing linker for Windows specialized for 4k intros
+
+Aske Simon Christensen "Blueberry/Loonies"
+Rune L. H. Stubbe "Mentor/TBC"
+
+Version 2.1a (January 19, 2019)
+
+
+
+VERSION HISTORY
+---------------
+19.01.19: 2.1a: Fixed width of report to make room for the 32 hex columns.
+ /REUSEMODE:WRITE to write the reuse file without reading it.
+
+18.12.18: 2.1: Crinkler executable built for both 32 bit and 64 bit.
+ New, slightly different model estimation. 8-12x speedup.
+ Optimized section reordering. About 3-4x speedup.
+ Optimized and multi-threaded hash size optimization.
+ New /COMPMODE:VERYSLOW option for a few extra bytes.
+ Changed default compression mode to SLOW.
+ Changed default HASHSIZE to 500 and HASHTRIES to 100.
+ /REUSE option: Use models and ordering from last run.
+ /REUSEMODE:STABLE to quickly iterate when making changes.
+ /REUSEMODE:IMPROVE to improve upon previous compression.
+ Print output file size in report.
+ More compact bits-per-byte color legend in report.
+ Choose configuration instead of hiding/showing in report.
+ 32 column hex view and other adjustments in report.
+ Avoid crash if an existing file could not be opened.
+ Updated internal function list to Windows version 1809.
+
+28.03.18: 2.0a: Fixed Crinkler crash on recent Windows SDK versions.
+ Fixed Crinkler crash on forwards from ole32.dll.
+ Corrected horizontal alignment issue in HTML report.
+ Support forwarded RVA imports with /TINYIMPORT.
+ Fixed spurious import of MessageBox with /TINYIMPORT.
+ Print compatibility warning when using /TINYIMPORT.
+ Updated internal function list to Windows version 1803.
+ Extended description in the manual of /TINYIMPORT.
+ Updated download link for the lib file for msvcrt.dll.
+
+28.07.15: 2.0: /TINYHEADER option: smaller decompressor for 1k intros.
+ /TINYIMPORT option: smaller import code for 1k intros.
+ /EXPORT option to export code and data symbols.
+ /SATURATE option to saturate context counters.
+ /FALLBACKDLL option for when a DLL is not available.
+ /UNALIGNCODE option to set alignment of all code to 1.
+ Support for /REPLACEDLL during recompression.
+ Consistent size between model estimation and reordering.
+ Header size reduced by 2 bytes.
+ Print previous size of output file.
+ Accept version specifier after /SUBSYSTEM value.
+ Switched from Intel OpenMP to MSVC concurrency API.
+
+19.01.13: 1.4: Output EXE files work with recent NVIDIA drivers.
+ New zero-section header layout saving around 30-50 bytes.
+ Forwarded RVA imports supported via link-time forwarding.
+ Dynamic C++ initializers supported.
+ Support for producing Large Address Aware executables.
+ Crinkler is Large Address Aware, handling larger inputs.
+ Report all unresolved symbols and the location of each.
+ Better resolving of ambiguous label references in report.
+ Various adjustments to textual output.
+ /RECOMPRESS overwrites input file by default.
+
+05.03.11: 1.3: Fixed Crinkler crash on some AMD systems.
+ Header size reduced by 21 bytes.
+ Slightly improved model hash function.
+ /OVERRIDEALIGNMENTS option to specify label alignments.
+ No limit on the number of calls in call transform.
+ Import code and entry point movable by section reordering.
+ Fixed bug in handling of files with absolute path.
+ Fixed labels in report showing up in the wrong section.
+ Crinkler writes .dmp files in case of a crash.
+
+05.09.09: 1.2: Output EXE files are now Windows 7 compatible.
+ Output EXE files are no longer Windows 2000 compatible.
+ Header size reduced by 16 bytes.
+ Non-range import code is (usually) slightly smaller.
+ Slightly improved section ordering estimation.
+ /RECOMPRESS option to recompress Crinkler-compressed
+ executables, optionally with different parameters.
+ /FIX removed, as it is subsumed by /RECOMPRESS.
+
+14.01.09: 1.1a: Fixed /TRUNCATEFLOATS crashing in some cases.
+ Improved /ORDERTRIES estimation when call transform is used.
+ Sometimes sections were misplaced in the HTML report.
+ Various improvements to the HTML report.
+ The /FIX option can input and output to the same file.
+ Helpful error messages for various unsupported features.
+ Prefer a custom entry point to a standard library one.
+ New section in the manual about runtime libraries.
+
+12.01.08: 1.1: Support for weak externals (virtual C++ destructors).
+ Fixed compatibility with Data Execution Prevention.
+ /REPORT option for a colorful HTML compression report.
+ /TRUNCATEFLOATS option to mutilate float constants.
+ /SAFEIMPORT is now default, disabled with /UNSAFEIMPORT.
+ Slightly smaller overhead if range importing is not used.
+ Fixed some problems with compressing very small files.
+ /VERBOSE:FUNCTIONS removed, as it is subsumed by /REPORT.
+ Remaining /VERBOSE options renamed to /PRINT.
+ Maximum number of ORDERTRIES increased to 100000.
+
+07.01.07: 1.0a: New /VERBOSE:FUNCTIONS options to sort the functions.
+ Various verbose output fixes.
+ Various crash fixes.
+ A fix to the /FIX Crinkler version recognizer.
+
+27.12.06: 1.0: Output EXE files are now Windows Vista compatible.
+ Compression tweak for greatly improved compression ratio.
+ Much faster compression.
+ Automatically takes advantage of multiple processors.
+ Improved Visual Studio 2005 integration.
+ /COMPMODE:INSTANT option for very quick compression.
+ /ORDERTRIES option to try out different section orderings.
+ /SAFEIMPORT option to insert a check for nonexistent DLLs.
+ /PROGRESSGUI option for a graphical progress bar.
+ /REPLACEDLL option to replace one DLL with another.
+ /FIX option to fix compatibility problems of older versions.
+
+09.02.06: 0.4a: Fixed linker crash problem with blank member entries
+ in some library files (such as glut32).
+ The /PRIORITY option was not mentioned in the
+ commandline usage help.
+
+18.12.05: 0.4: Changed header and import code to make output EXE files
+ compatible with 64-bit versions of Windows.
+ Fixed a bug in the ordinal range import mechanism.
+ Added a switch to control the process priority.
+ Added a warning for range import of an unused DLL.
+ Some more header squeezing.
+
+31.10.05: 0.3: Output EXE files are now Windows 2000 compatible.
+ Added a number of verbose options to output useful
+ information about the program being compressed.
+ Added an option for transforming function calls to
+ use absolute offsets to improve compression.
+ Fixed a bug in the linker regarding identically named
+ sections.
+ Fixed a potential crash bug in the linker.
+ Various small tweaks and optimizations.
+
+23.07.05: 0.2: Fixed bug in the decompressor.
+ Changed the behaviour of the /CRINKLER option.
+ Added timing to the progress bars.
+ Some updates to the manual and usage description.
+
+21.07.05: 0.1: First release.
+
+
+
+BACKGROUND
+----------
+
+Ever since the concept of size-limited demo competitions was
+introduced in the early 1990's (and before that as well), people have
+been using executable file compressors to reduce the size of their
+final executables. An executable file compressor is a program that
+takes as input an executable file and produces a new executable file
+which has the same behaviour as the original one but is (hopefully)
+smaller.
+
+The usual technique employed by executable file compressors is to
+compress the contents of the executable file using some general
+purpose data compression method and prepend to this compressed data a
+small piece of code (the decompressor) which decompresses the contents
+into memory in such a way that it looks to the code as if the original
+executable file had been loaded into memory in the normal way.
+
+The size of the decompressor is usually around a few hundred bytes,
+depending on the complexity of the compression method. This
+constitutes an unavoidable overhead in the compressed file, which is
+particularly evident for small files, such as 4k intros. Furthermore,
+the header of the Windows EXE file format contains a lot of
+information that needs to be there at fixed offsets in order for
+Windows to be able to load the file. The presence of these overheads
+from the header and decompressor motivated people to look for other
+means of compressing their 4k intros.
+
+Until Crinkler came around, the most popular strategy for compressing
+4k intros for Windows was CAB dropping: A few simple transformations
+are performed on the executable to make it compress better (such as
+merging sections and setting unused header fields to zero), and the
+result is compressed using the Cabinet Compression tool included with
+Windows. The resulting .CAB file is renamed to have .BAT extension,
+and some commands are inserted into the file such that when the .BAT
+file is executed, it decompresses the executable to disk (using the
+Cabinet decompression command), runs the executable and then deletes
+the executable again. This saves the size of the decompression code
+(since an external program is used to do the decompression) and some
+of the size of the header (since the header can be compressed).
+
+Various dropping strategies combined with other space-saving hacks
+people employed on their 4k intros (in particular import by ordinal)
+caused severe compatibility problems. More often than not, people
+who wanted to run a newly released 4k intro found that it did not
+work on their own machine. It became customary to include a
+'compatible' version in the distribution which was larger than 4k
+but worked on all machines. For a time, it seemed that the term
+'4k intro' meant '4k on the compo machine' intro.
+
+The main motivation for starting the Crinkler project was the feeling
+that the existing means available for compressing 4k intros were
+unsatisfactory. We want 4k intros that are self-contained EXE
+files. We want 4k intros that are 4 kilobytes in size. Our aim for
+Crinkler is to be the cleanest, most effective and most compatible
+executable file compressor for Windows 4k intros.
+
+
+
+COMPATIBILITY
+-------------
+
+The goal of Crinkler is for the produced EXE files to be compatible
+with all widely used Windows versions and configurations. As of
+version 2.0a, the EXE files produced by Crinkler are, to the best of
+our knowledge, compatible with Windows XP, Windows Vista, Windows 7,
+Windows 8 and Windows 10, both 32 bit and 64 bit versions. They are
+compatible with Data Execution Prevention and with execution hooks
+that inspect the import or export table of launched executables
+(graphics drivers are known to do this).
+
+It is not a primary goal of Crinkler to anticipate incompatibilities
+that may arise in the future as a consequence of new Windows versions,
+graphics drivers or other widespread system changes. Guaranteeing such
+compatibility would require Crinkler to follow the EXE file format
+specification to the letter, precluding most of the header hacks that
+Crinkler utilizes in order to reduce the size overhead of the EXE
+format as much as possible. Rather, we strive to continually monitor
+the compatibility situation and release a new, fixed version of
+Crinkler whenever a situation arises that affects the compatibility
+severely (such as a new, incompatible version of Windows). This has
+occurred several times already throughout the history of Crinkler.
+
+Each new version of Crinkler not only produces executables that are
+compatible with the current majority of targeted systems. It also
+includes a way of fixing old Crinkler executables to have the same
+level of compatibility. See the section on recompression for more
+details on this feature.
+
+This compatibility strategy ensures that intros made using Crinkler
+will continue to be accessible to their audience, even if the Windows
+EXE loader changes in an incompatible way that could not be
+anticipated at the time the intro was produced.
+
+
+
+INTRODUCTION
+------------
+
+Crinkler is a different approach to executable file compression. While
+an ordinary executable file compressor operates on the executable file
+produced by the linker from object files, Crinkler replaces the linker
+by a combined linker and compressor. The result is an EXE file which
+does not do any kind of dropping. It decompresses into memory like a
+traditional executable file compressor.
+
+Crinkler employs a range of techniques to reduce the size of the
+resulting EXE file beyond what is usually obtained by using CAB
+compression:
+
+- Having control over the linking step gives much more flexibility in
+ the optimizations and transformations possible on the data before
+ and after compression.
+
+- The compression technique used by Crinkler is based on context
+ modelling, which is far superior in compression ratio to the LZ
+ variants used by CAB and most other compressors. The disadvantage of
+ context modelling is that it is extremely slow, but this is of
+ little importance when only 4 kilobytes need to be compressed. It
+ also needs quite a lot of memory for decompression, but this is
+ again not a problem, since the typical 4k intro uses a lot of memory
+ anyway.
+
+- The actual compression algorithm performs many passes over the data
+ in order to optimize the internal parameters of the compressor. This
+ results in slower compression, but this is usually a reasonable
+ price to pay for the extra bytes gained on the file size.
+
+- The contents of the executable are split into two parts - a code
+ part and a data part - and each of these are compressed
+ individually. This leads to better compression, as code and data are
+ usually very different in structure and so do not benefit from being
+ compressed together.
+
+- DLL functions are imported by hash code. This is robust to
+ structural changes to the DLL between different versions while being
+ quite compact - only 4 bytes per imported function. For DLLs with
+ fixed relative ordinals (such as opengl32), a special technique,
+ ordinal range import, can be used to further reduce the number of
+ hash codes needed.
+
+- Much of the data in the EXE header is actually ignored by the EXE
+ loader. This space is used for some of the decompression code.
+
+Using Crinkler is somewhat different from using an ordinary executable
+file compressor because of the linking step. In the following
+sections, we describe its use in detail.
+
+
+
+INSTALLATION
+------------
+
+To use as a stand-alone linker, Crinkler does not need any
+installation. Simply run crinkler.exe from the commandline with
+appropriate arguments, as described in the next section.
+
+However, if you are using Microsoft Visual Studio to develop your
+intro, the easiest way to use Crinkler is to run it in place of the
+normal Visual Studio linker. Crinkler has been designed as a drop-in
+replacement of the Visual Studio linker, supporting the same basic
+options. All of the options can then be set using the Visual Studio
+configuration window.
+
+Unfortunately, Visual Studio does not (as of this writing) support
+replacing its linker by a different one. So what you have to do to
+make Visual Studio use Crinkler for linking is the following:
+
+- Copy crinkler.exe to your project directory or to some other
+ directory of your choice and rename it to link.exe. If you are using
+ some other linker with a different name, such as the one used with
+ the Intel C++ compiler, call it whatever the name of the linker is.
+
+- For Visual Studio 2008 and older, select Tools/Options... and go to
+ Projects and Solutions/VC++ Directories. For Visual Studio 2010 or
+ newer, open a project, select View/Property Manager, expand a project
+ and a configuration, double click on Microsoft.Cpp.Win32.user and go
+ to Common Properties/VC++ Directories.
+
+- At the top of the list for Executable files, add the directory where
+ you placed Crinkler named link.exe, or add $(SolutionDir) to make it
+ search in the project directory.
+
+- In the Release configuration (or whichever configuration you want to
+ enable compression), under Linker/Command Line/Additional Options,
+ type in /CRINKLER, along with any other Crinkler options you want to
+ set. See the next section for more details on options. Also set
+ Linker/Manifest File/Generate Manifest to No and
+ C/C++/Optimization/Whole Program Optimization to No.
+
+If you have Visual Studio installed but want to run Crinkler from the
+commandline, the easiest way is to use the Visual Studio Command
+Prompt (available from the Start menu), since this sets up the LIB
+environment variable correctly. You can read off the value of the
+environment variables by running the 'set' command in this command
+prompt. If you are using a different command prompt, you will have to
+set up the LIB environment variable manually, or use the /LIBPATH
+option.
+
+
+
+USAGE
+-----
+
+The general form of the command line for Crinkler is:
+
+CRINKLER [options] [object files] [library files] [@commandfile]
+
+When running from within Visual Studio, the object files will be the
+ones generated from the sources in the project. The library files will
+be the standard set of Win32 libraries, plus any additional library
+files specified under Linker/Input/Additional Dependencies. If you are
+using a standard runtime library, such as msvcrt, you will have to
+specify this one manually. See the section on standard libraries for
+more information.
+
+
+The following options are compatible with the VS linker and can be set
+using switches in the Visual Studio configuration window:
+
+/SUBSYSTEM:CONSOLE
+/SUBSYSTEM:WINDOWS
+(Linker/System/SubSystem)
+
+ Specify the Windows subsystem to use. If the subsystem is CONSOLE,
+ a console window will be opened when the program starts. The
+ subsystem also determines the name of the default entry point (see
+ /ENTRY). The default subsystem is WINDOWS.
+
+/LARGEADDRESSAWARE
+/LARGEADDRESSAWARE:NO
+(Linker/System/Enable Large Addresses)
+
+ Specify whether the executable is able to handle addresses above
+ 2 gigabytes. If this option is enabled, the executable will be able
+ to allocate close to 4 gigabytes of memory.
+
+/OUT:[file]
+(Linker/General/Output File)
+
+ Specify the name of the resulting executable file. The default
+ name is out.exe.
+
+/ENTRY:[symbol]
+(Linker/Advanced/Entry Point)
+
+ Specify the entry label in the code. The default entry label is
+ mainCRTStartup for CONSOLE subsystem applications and
+ WinMainCRTStartup for WINDOWS subsystem applications.
+
+/LIBPATH:[path]
+(Linker/General/Additional Library Directories)
+
+ Add a number of directories (separated by semicolons) to the ones
+ searched for library files. If a library is not found in any of
+ these, the directories mentioned in the LIB environment variable
+ are searched.
+
+@commandfile
+
+ Commandline arguments will be read from the given file, as if they
+ were given directly on the commandline.
+
+
+In addition to the above options, a number of options can be given to
+control the compression process. These can be specified under
+Linker/Command Line/Additional Options:
+
+/CRINKLER
+
+ Enable the Crinkler compressor. If this option is disabled,
+ Crinkler will search through the path for a command with the same
+ name as itself, skipping itself, and pass all arguments on to this
+ command instead. This will normally invoke the Visual Studio
+ linker. If the name of the Crinkler executable is crinkler.exe,
+ this option is enabled by default, otherwise it is disabled by
+ default.
+
+/RECOMPRESS
+
+ Decompress a Crinkler-compressed executable and recompress it
+ using the given options. The resulting executable will have the
+ same level of compatibility as one produced directly by the
+ current version of Crinkler. See the section on compatibility for
+ more information on the compatibility of Crinkler-produced
+ executables.
+
+ When this option is specified, Crinkler takes a single file
+ argument, which must be an EXE file produced by Crinkler 0.4 or
+ newer.
+
+ See the section on recompression below for a description of the
+ options that can be given to control the decompression process.
+
+/PRIORITY:IDLE
+/PRIORITY:BELOWNORMAL
+/PRIORITY:NORMAL
+
+ Select the process priority at which Crinkler will run while
+ compressing. The default priority is BELOWNORMAL. Use IDLE if you
+ want Crinkler to disturb you as little as possible. Use NORMAL if
+ you don't need your machine for anything else while compressing.
+
+/COMPMODE:INSTANT
+/COMPMODE:FAST
+/COMPMODE:SLOW
+/COMPMODE:VERYSLOW
+
+ Choose between four different algorithms for the model estimation.
+ The FAST compression mode performs a very quick estimation, whereas
+ the SLOW mode takes up to some tens of seconds for a typical 4k,
+ but also compresses significantly better. VERYSLOW is about 5-10x
+ slower than SLOW and typically a few bytes better. INSTANT skips
+ model estimation entirely and just uses a fixed set of models and
+ weights. It also skips section reordering and hash table size
+ optimization. Use INSTANT if you just want to check that your
+ program works in compressed form and don't care about the size.
+ The default compression mode is SLOW.
+
+/SATURATE
+
+ The compressor and decompressor use pairs of 8-bit counters to
+ track the distributions of 0 and 1 bits for each context. If your
+ data is very repetitive (contains large blocks of the same pattern
+ of values repeated over and over again), these counters may wrap
+ around, which can sometimes hurt compression of these repetitive
+ areas.
+
+ This option inserts extra code in the decompression header to keep
+ these counters from wrapping. It is worth trying out if you have
+ large, repetitive regions and see in the compression report that
+ the data in these regions suddenly jumps up from lightest green to
+ slightly darker green for no apparent reason.
+
+/HASHSIZE:[memory size]
+
+ Specify the amount of memory the decompressor is allowed to use
+ while decompressing, in megabytes. In general, the more memory the
+ decompressor is allowed to use, the better the compression ratio
+ will be, though only slightly. The memory requirements of the
+ final executable (the size of the executable image when loaded
+ into memory) will be the maximum of this value and the original
+ image size. The memory will not be deallocated until the program
+ terminates, and any heap allocation the program performs will add
+ to this memory usage. The default value is 100, which is usually a
+ good compromise.
+
+/HASHTRIES:[number of retries]
+
+ Specify the number of different hash table sizes the compressor
+ will try in order to find one with few collisions. More tries lead
+ to longer compression time but slightly better compression. The
+ default value is 20. Higher values rarely improve the size by more
+ than a few bytes.
+
+/TINYHEADER
+ Enables an alternative compression algorithm trading off some
+ compression efficiency for an even smaller decompression overhead.
+ This can be beneficial when targeting extremely small file sizes
+ such as 1kb. The simpler decompressor gathers statistics by
+ repeated linear searches instead of hashing. This results in
+ an O(n^2) decompression time which can become prohibitively slow
+ for files significantly larger than 1kb.
+
+ The COMPMODE, HASHSIZE, HASHTRIES, REUSE, SATURATE and EXPORT
+ options are ignored when TINYHEADER is enabled.
+
+/TINYIMPORT
+ Enables a more compact, but less future-proof, function importing
+ scheme which does not require the explicit storage of function
+ name hashes. This is achieved by indiscriminately importing every
+ function from the relevant DLLs. The imported functions are
+ scattered in an import table based on their function name hashes.
+ Intuitively, this embeds the hash code entropy directly into the
+ call instruction.
+
+ Crinkler ensures that the import table size and hash function are
+ chosen such that there are no collisions between the functions
+ used by the linked program and other functions which are imported
+ later from the DLLs. This way, the desired function pointers will
+ be intact in the import table.
+
+ However, Crinkler can only ensure this for functions that it knows
+ about. These include the functions present in the DLLs on the
+ system on which Crinkler is run, plus an internal list consisting
+ of functions from commonly imported DLLs covering most supported
+ Windows versions available at the time of release (Spring Creators
+ Update 2018 version 1803 as of Crinkler 2.0a).
+
+ Thus, this import technique is less resilient to changes in
+ future windows versions, since when functions are added in a
+ future version of the DLL, they may collide with functions used by
+ the program, in which case the program will cease to work.
+ Programs broken this way cannot be fixed by recompression.
+
+ When using this options, it is strongly recommended to also
+ distribute safe versions using ths normal import mechanism.
+
+ The UNSAFEIMPORT, FALLBACKDLL and RANGE options are ignored
+ when TINYIMPORT is enabled.
+
+/ORDERTRIES:[number of retries]
+
+ Specify the number of section reordering iterations that the
+ linker will try out in search for the ordering that gives the best
+ compression ratio. The default is not to do any reordering.
+ Crinkler starts from a heuristic ordering (the one used when
+ initially estimating models) and incrementally makes small, random
+ changes to the ordering to see if it can find one that compresses
+ better.
+
+ Specifying this option drastically increases the compression time,
+ since Crinkler has to calculate the compressed size anew on every
+ reordering. Usually, the size does not improve noticeably after a
+ few thousand iterations.
+
+/REUSE:[reuse parameter file name]
+/REUSEMODE:STABLE
+/REUSEMODE:IMPROVE
+/REUSEMODE:WRITE
+/REUSEMODE:OFF
+
+ After compression, write information about the selected models,
+ the ordering of sections and the optimized hash table size to a
+ text file with the specified name. If the file exists already,
+ use the parameters in the file as input to the compression in a
+ manner dependent on the chosen REUSEMODE:
+
+ With STABLE (the default), skip all model estimation, section
+ reordering and hash table size optimization and simply use the
+ parameters exactly as in the file. Keep the reuse file as is.
+ This option can be used to try out small changes to the contents
+ of the code and data with a stable compression. Thus, it gives
+ a much more reliable estimation of whether the change was an
+ improvement or not. It is also useful as a way to compress very
+ quickly after the first time with a similar compression ratio.
+
+ With IMPROVE, only the section ordering from the file is reused,
+ and a normal compression procedure is performed. If section
+ reordering is enabled, it starts from the ordering in the reuse
+ file and tries to optimize the ordering based on that. The file is
+ written back only if the final file size is smaller than what
+ the parameters in the reuse file would have given (which is not
+ necessarily the size of the existing file, depending on what
+ changes and operations are performed in the meantime).
+ The option can be used to check whether better parameters can be
+ found than the ones cached in the reuse file. It is also a way to
+ run some extra reordering iterations (if reordering is enabled)
+ to see if this improves compression.
+
+ For both modes, it can be useful to edit the reuse file by hand
+ to try out parameters manually or to nudge Crinkler in some
+ direction.
+
+ With WRITE, the reuse file is not read, but is still written
+ after compression, overwriting the file if it exists. This can be
+ conveniently used when reuse is not desired, such that it can be
+ switched on at any time (by changing the reuse mode to STABLE or
+ IMPROVE) without needing another compression run.
+
+ With OFF, it is as if no reuse file is specified. This is simply
+ a way to disable the option without removing the file from the
+ commandline.
+
+ If COMPMODE is set to INSTANT, the reuse mode is also considered
+ to be OFF.
+
+/RANGE:[DLL name]
+
+ Import functions from the given DLL (without the .dll suffix)
+ using ordinal range import. Ordinal range import imports the first
+ used function by hash and the rest by ordinal relative to the
+ first one. Ordinal range import is safe to use on DLLs in which
+ the ordinals are fixed relative to each other, such as opengl32 or
+ d3dx9_??. This option can be specified multiple times, for
+ different DLLs.
+
+/REPLACEDLL:[oldDLL]=[newDLL]
+
+ Whenever a function is imported from oldDLL, import it from newDLL
+ instead. DLL replacement is useful when the end user might not
+ have the version of the DLL that you are linking to. A typical use
+ is to replace one version of d3dx9_?? by another. Only use this
+ option if you know that the two DLLs are compatible. When
+ REPLACEDLL and RANGE are used together, RANGE must refer to the
+ new DLL.
+
+/FALLBACKDLL:[firstDLL]=[otherDLL]
+
+ If firstDLL fails to load, try loading otherDLL and import the
+ functions from there instead. For instance, to use d3dcompiler_47
+ when available but fall back to d3dcompiler_43 otherwise (since
+ the shader compiler in d3dcompiler_47 is much faster), link
+ to d3dcompiler_47 and use:
+
+ /FALLBACKDLL:d3dcompiler_47=d3dcompiler_43
+
+ The FALLBACKDLL option can be used together with REPLACEDLL to
+ specify a primary DLL other than the one your SDK links to. For
+ instance, if you are using the legacy DirectX SDK (which links to
+ d3dcompiler_43) and want to have the above prioritization, use:
+
+ /REPLACEDLL:d3dcompiler_43=d3dcompiler_47
+ /FALLBACKDLL:d3dcompiler_47=d3dcompiler_43
+
+ Arbitrarily long chains of DLL fallback can be used by specifying
+ the FALLBACKDLL option multiple times, though the chains can of
+ course not be cyclic.
+
+/EXPORT:[name]
+/EXPORT:[name]=[symbol]
+/EXPORT:[name]=[value]
+
+ Include an export table into the executable, containing an export
+ with the given name.
+
+ The first version exports an existing symbol under its existing
+ name. The second version exports an existing symbol under a
+ different name. The third version creates a 32-bit integer with
+ the given value and exports it under the given name. The value
+ can be specified in octal (prefixed with 0), decimal or hexadecimal
+ (prefixed with 0x) format.
+
+ The first version is compatible with the VS linker, but there is
+ currently no specific field for it in the configuration window.
+
+ The export table will be compressed along with the other data
+ in the executable and decompressed to the memory address specified
+ in the export table pointer in the PE header. Thus, the exports
+ defined this way are only visible to code inspecting the export
+ table after decompression has taken place.
+
+ For PE header technical reasons, all exports must be placed earlier
+ in memory than the export table. Thus, only symbols in the code and
+ data sections can be exported. If an uninitialized (BSS) symbol is
+ exported, it will be automatically moved to the data section (with
+ a warning). Beware that this will move the whole section containing
+ the symbol, so other symbols might be moved along with it.
+
+ The EXPORT option can be used to signal to the graphics driver that
+ your program desires to run on the high-performance GPU in a multi-
+ GPU system. This saves the user from having to right-click on the
+ executable and select "Run with graphics processor...".
+
+ To request high performance on NVIDIA Optimus systems, use:
+
+ /EXPORT:NvOptimusEnablement=1
+
+ To request high performance on AMD PowerXpress/Enduro systems, use:
+
+ /EXPORT:AmdPowerXpressRequestHighPerformance=1
+
+ An arbitrary number of exports can be specified, so the two high
+ performance declarations can be used together if you have space
+ enough to spare.
+
+/UNSAFEIMPORT
+
+ If the executable fails to load some DLL, it will normally pop up
+ a message box with the DLL name. This option disables this check
+ to save a few bytes (usually around 20). With unsafe import, the
+ executable will crash if a needed DLL is not found.
+
+/TRANSFORM:CALLS
+
+ Change the relative jump offsets in all internal call instructions
+ (E8 opcode) into absolute offsets from the start of the code. This
+ usually improves compression, since multiple calls to the same
+ function become identical. The transformation has an overhead of
+ about 20 bytes for the detransformation code, but the net savings
+ on a full 4k can be as large as 50 bytes, depending on the number
+ of calls in your code.
+
+/NOINITIALIZERS
+
+ Disable the inclusion of dynamic C++ initializers. The default is
+ to insert calls to each of the initializers just before the entry
+ point.
+
+/TRUNCATEFLOATS:[number of bits]
+
+ Floating point constants can take up a significant amount of space
+ in an intro, and often much of this space is wasted because the
+ constants have more precision than needed. Typically, many bytes
+ can be saved by rounding floating point constants to "nice" values
+ - that is, values where many bits in the mantissa are zero.
+ However, such rounding is cumbersome, especially when the
+ constants are written in decimal notation.
+
+ The purpose of the /TRUNCATEFLOATS option is to automate this
+ rounding process. When this option is given, Crinkler tries to
+ identify float and double constants and round them to the number
+ of bits given (between 1 and 64). If no number is given, 64 is
+ assumed.
+
+ Typically, object files do not contain any information about what
+ data is floating point constants and what is not (though the file
+ format does support such information). This means that in order to
+ identify floating point constants, Crinkler has to resort to
+ heuristics based on label names. These heuristics are able to
+ recognize constants in code and some variables, but far from all.
+
+ You can tell Crinkler explicitly that some variable contains float
+ data and how much it should be truncated by having the variable
+ name (or label) start with tf[n]_ where [n] is the number of bits
+ to truncate the constants to. The number of bits can be omitted,
+ in which case the number of bits given in the argument to
+ /TRUNCATEFLOATS is used. Such variables will still only be
+ truncated if the /TRUNCATEFLOATS option is given. Example:
+
+ const float tf14_positions[] = { 0.1f, 0.35f, 0.25f };
+
+ This will truncate the constants in the table to 14 bits (5 bits
+ of mantissa), resulting in the values 0.099609375, 0.3515625 and
+ 0.25, respectively. Tip: rather than changing the variable name
+ and all references to it each time you want to change the
+ truncation precision, use a define:
+
+ #define positions tf14_positions
+
+ Note that /TRUNCATEFLOATS is an unstable and highly experimental
+ feature. Make sure to test the compressed file to verify that the
+ result is acceptable. Remember to include the musician in this
+ verification process. :)
+
+/OVERRIDEALIGNMENTS:[bits of alignment]
+
+ It is often possible to improve compression by placing
+ uninitialized variables at addresses divisible by high powers of
+ two, since this will cause all references to these addresses to
+ contain more zeros.
+
+ The PE file format only supports up to 13 bits of alignment
+ (8192), and some tools do not even expose this support fully (for
+ instance, Nasm only supports alignments up to 64). Usually, much
+ higher alignments are desirable.
+
+ Crinkler supports explicit alignment of labels at up to one
+ gigabyte (30 bits). When you specify the /OVERRIDEALIGNMENTS
+ option, Crinkler will look for labels containing the string
+ align[n] where [n] is the number of bits of alignment desired
+ (e.g. 8 for 256-byte alignment). It will then align the section
+ containing that label such that the label address is divisible by
+ 2^[n]. The label does not have to be at the beginning of the
+ section, but there can be at most one explicitly aligned label in
+ each section.
+
+ The alignment specifier can optionally include an alignment
+ offset, specified by the string align[n]_[m] where [n] is the
+ number of bits of alignment and [m] is the offset in bytes. This
+ will place the label [m] bytes after an aligned address, i.e. such
+ that the address minus [m] is divisible by 2^[n].
+
+ If a numerical argument is given to /OVERRIDEALIGNMENTS, all
+ uninitialized sections which do not contain an explicitly aligned
+ label will be aligned to the given number of bits (if larger than
+ their original alignment). If the option is specified without
+ argument, uninitialized sections which do not contain an
+ explicitly aligned label will be aligned as specified in the
+ object file, as normally.
+
+ A convenient way to specify explicit alignments in C++ code is in
+ a header file included by all files in the project, containing
+ definitions like this:
+
+ #define MusicBuffer MusicBuffer_align24
+
+ In assembler files, alignments can be specified as local labels:
+
+ MusicBuffer:
+ .align24
+ ; buffer space here
+
+ Explicit alignment can be used on code and data sections as well,
+ except for the section containing the entry point, which will
+ always be 1-byte aligned. The space between the sections will be
+ padded with zero bytes.
+
+/UNALIGNCODE
+
+ Force all code sections to use alignment of 1, eliminating all
+ padding between them. This usually improves compression, but
+ can result in slightly lower performance if some functions are
+ called in performance critical loops.
+
+ The /OVERRIDEALIGNMENTS mechanism has priority over /UNALIGNCODE,
+ so if you want to excempt a few functions from being unaligned,
+ you can specify an explicit alignment for these as described for
+ /OVERRIDEALIGNMENTS.
+
+
+Finally, Crinkler has a number of options for controlling the output
+during compression. Just like the other options, these can be
+specified under Linker/Command Line/Additional Options:
+
+/REPORT:[HTML file name]
+
+ Write an HTML file with a detailed, colorful, interactive report
+ on the compression result. The code section will be shown as hex
+ dump and disassembly of the code, and the data section will be
+ shown as hex and ascii dump. All bytes will be colored to show how
+ much that byte was compressed. This report can be useful in
+ determining which parts of the executable take up the most space
+ and which things to change to reduce the size.
+
+/PRINT:LABELS
+
+ Print a list of all labels in the program along with uncompressed
+ and compressed sizes for the data between the labels. This is a
+ stripped down version of the information provided by the /REPORT
+ option.
+
+/PRINT:IMPORTS
+
+ List all functions imported from DLLs. The functions are grouped
+ by DLL, and functions imported by ordinal range import are grouped
+ into ranges.
+
+/PRINT:MODELS
+
+ List the model masks and weights selected by the compressor. This
+ is mostly for internal use.
+
+/PROGRESSGUI
+
+ Open a window showing a graphical progress indicator.
+
+
+An example commandline for linking and compressing an intro could look
+like this (split on multiple lines for readability):
+
+crinkler.exe /OUT:micropolis.exe /SUBSYSTEM:WINDOWS /RANGE:opengl32
+ /COMPMODE:SLOW /ORDERTRIES:1000 /PRINT:IMPORTS /PRINT:LABELS
+ kernel32.lib user32.lib gdi32.lib opengl32.lib glu32.lib winmm.lib
+ micropolis\startup.obj micropolis\render.obj
+ micropolis\render-asm.obj micropolis\sound.obj
+ micropolis\sound-asm.obj
+
+
+
+RECOMPRESSION
+-------------
+
+A new feature in Crinkler 1.2 is the abillity to recompress an already
+Crinkler-compressed executable. The main purpose for the feature is to
+patch an executable compressed using an earlier version of Crinkler so
+that it runs on recent Windows versions. But it can also be used
+more generally to change some of the compression parameters of a
+compressed program without performing the whole linking and
+compression process from scratch and without access to the original
+object files. Particularly, if your output executable after a long
+time spent compressing is just a few bytes too big due to bytes lost
+to hashing, you can recompress the output executable, specifying a
+higher value for /HASHSIZE and/or /HASHTRIES, and thus avoid running
+through the whole compression process again.
+
+Recompression mode is activated by the /RECOMPRESS option. When this
+option is specified, Crinkler takes a single file argument, which must
+be an EXE file produced by Crinkler 0.4 or newer. Most options then
+take on slightly different meanings, as described here.
+
+The /CRINKLER, /PRIORITY, @commandfile and /PROGRESSGUI options work
+as normally. The /ENTRY, /LIBPATH, /ORDERTRIES, /RANGE, /FALLBACKDLL,
+/UNSAFEIMPORT, /TRANSFORM:CALLS, /NOINITIALIZERS, /TRUNCATEFLOATS,
+/OVERRIDEALIGNMENTS, /UNALIGNCODE, /TINYHEADER and /TINYIMPORT options
+are ignored, as the parameters specified by these options cannot be
+changed via recompression. The /PRINT options are also ignored. The
+remaining options work as follows:
+
+/SUBSYSTEM:CONSOLE
+/SUBSYSTEM:WINDOWS
+
+ If this option is given, it specifies the Windows subsystem to use
+ as normally. If it is omitted, the original subsystem will be
+ used.
+
+/LARGEADDRESSAWARE
+/LARGEADDRESSAWARE:NO
+
+ If this option is given, it specifies large address awareness of the
+ executable as normally. If it is omitted, the original large address
+ awareness will be used.
+
+/OUT:[file]
+
+ Specify the name of the resulting executable file. The default is
+ to overwrite the input file.
+
+/COMPMODE:INSTANT
+/COMPMODE:FAST
+/COMPMODE:SLOW
+
+ If this option is specified, the compression models will be
+ reestimated using the specified compression mode. If the option is
+ omitted, the models used for the original compression will be used
+ for the recompression, and no model estimation will be performed.
+ If the executable was originally produced by Crinkler 1.0 or
+ newer, this will typically yield a compression ratio similar to
+ the original compression.
+
+/SATURATE
+/SATURATE:NO
+
+ If this option is given, it specifies saturation as normally. If
+ it is omitted, the original saturation mode will be used.
+
+/HASHSIZE:[memory size]
+
+ If neither this option nor a compression mode is specified, the
+ original, optimized hash size will be used. Recompression speed
+ will be similar to INSTANT compression mode in this case.
+
+ If a compression mode is specified but this option is omitted,
+ hash size optimization will be performed using the hash size
+ specified for the original file.
+
+ If this option is given, hash size optimization takes place
+ normally, using the specified maximum size.
+
+/HASHTRIES:[number of retries]
+
+ If hash size optimization takes place, this option specifies the
+ number of tries as normally. Otherwise it is ignored.
+
+/REPLACEDLL:[oldDLL]=[newDLL]
+
+ Replaces an original DLL by a new one. Only works if the names
+ of the DLLs are exactly the same length.
+
+/STRIPEXPORTS
+
+ This is a recompression specific option which instructs Crinkler
+ to strip away any existing exports from the executable. New exports
+ can be added using the /EXPORT option whether or not the existing
+ exports are stripped away.
+
+/EXPORT:[name]
+/EXPORT:[name]=[symbol]
+/EXPORT:[name]=[value]
+
+ Adds an export to the executable, as normally. The first two
+ versions can only refer to an existing export in the executable
+ that was exported using one of the first two versions in the first
+ place. They can refer to such an export even if existing exports
+ are stripped away using the /STRIPEXPORTS option.
+
+ If an export already exists with the same name, the new export
+ replaces the existing one.
+
+/REPORT:[HTML file name]
+
+ Writes out an HTML file as normally. Since no symbol information
+ is available, this will be a plain disassembly/hex dump without
+ labels or cross-linking.
+
+
+
+STANDARD RUNTIME LIBRARIES
+--------------------------
+
+Under normal circumstances, the Visual Studio compiler generates code
+that requires a C runtime library containing standard C functions and
+various support functions. These functions can either be linked in
+statically (included into the executable) or dynamically via a runtime
+DLL. For size-sensitive applications, you should always link
+dynamically, which is achieved by setting C/C++/Code
+Generation/Runtime Library to Multi-threaded DLL (/MD).
+
+Note however, that the standard runtime libraries for Visual Studio
+2005 or newer will not work with Crinkler-compressed executables,
+since these runtime libraries require a manifest in the executable,
+and Crinkler does not support manifests. Furthermore, these DLLs are
+not present by default on Windows installations, so you will usually
+not want your program to be dependent on them.
+
+To work around this, link to the Visual Studio 6 runtime library -
+msvcrt.dll - which is distributed with all Windows versions. This is
+done by using the Visual Studio 6 version of msvcrt.lib, which can be
+obtained thus:
+
+- Download Service Pack 6 for Visual Studio 6.0 at
+ https://www.microsoft.com/en-us/download/details.aspx?id=9183
+- Place the downloaded self-extractor in an empty directory and run
+ it, or open it using an archive tool such as WinRAR.
+- Open the VS6sp61.cab file and go to the vc98\lib directory. There
+ you will find the msvcrt.lib file.
+- Rename this file to something else (such as msvcrt_old.lib) and
+ place it in your project directory.
+- Add msvcrt_old.lib to the list of libraries to link to at
+ Linker/Input/Additional Dependencies.
+
+There are a couple of caveats to using an older runtime library than
+the compiler expects, though. With out-of-the-box compilation
+options, the Visual Studio compiler generates code that requires some
+support functions which are only present in newer runtime DLLs. To
+avoid these dependencies, set the following options under C/C++/Code
+Generation:
+
+- Basic Runtime Checks: Default
+- Buffer Security Check: No (/GS-)
+
+Also, do not use C++ exception handling in your code. And do not use
+STL classes, since they use exceptions all over.
+
+Finally, even when using the DLL-based runtime, not all support code
+is linked dynamically. The runtime library contains an entry function
+which is included into the executable and takes care of things like
+parsing the commandline and executing dynamic initializers. The entry
+function then calls the main function.
+
+The standard entry function is around half a kilobyte in size and is
+usually not needed for intro code to function properly. To avoid this
+overhead, define your own entry function, either by defining a
+function called mainCRTStartup or WinMainCRTStartup (depending on
+which Windows subsystem you use) or by using the /ENTRY option.
+
+The best strategy is of course to avoid linking to a runtime DLL at
+all, assuming you can do without the functions provided by the
+standard runtime library. This will save the space for importing the
+runtime DLL.
+
+To reduce the dependencies on the standard runtime DLL as much as
+possible, set the following options:
+
+- C/C++/Optimization/Enable Intrinsic Functions: Yes (/Oi). This will
+ cause several standard functions (mainly math, string and memory
+ functions) to generate inline code rather than a function call.
+- C/C++/Code Generation/Floating Point Model: Fast (/fp:fast).
+- C/C++/Command Line: Add the option /QIfist. This will cause
+ conversions from floating point to integer to use the FIST
+ instruction rather than calling a conversion function. Note that
+ this changes the semantics of conversions from truncation to
+ round-to-nearest (unless you explicitly change the rounding mode of
+ the FPU). On the other hand, it will also give a considerable speed
+ boost.
+
+
+
+RECOMMENDATIONS
+---------------
+
+There are a number of things you can do as intro programmer to boost
+the compression achieved by Crinkler even further. This section
+gives some advice on these.
+
+- Since much of the effectiveness of Crinkler comes from separating
+ code and data into different parts of the file and compressing each
+ part individually, it is important that this separation is
+ possible. Mark your code and data sections as containing code and
+ data, respectively, and do not put both code and data into the same
+ section. See your assembler manual for information about how to do
+ this. For instance, in Nasm, you can write the keyword "text" or
+ "data" after the section name and give sections different names to
+ prevent them from being merged by the assembler.
+
+- Split both your code and your data into as many sections as
+ possible. This gives Crinkler more opportunities to select the
+ ordering of the sections to optimize the compression ratio.
+
+- If you are using OpenGL, try using ordinal range import for
+ opengl32. If you are using Direct3D, try using ordinal range import
+ for d3dx9_??. This may reduce the space needed for function hash
+ codes.
+
+- If you are only importing functions from DLLs which are present on
+ all Windows systems (d3dx9_?? is not), you can "safely" use the
+ /UNSAFEIMPORT option. Run Crinkler with the /PRINT:IMPORTS option
+ to check which DLLs you are importing from.
+
+- Avoid large blocks of data, even if they are all zero. Use
+ uninitialized (bss) sections instead. Crinkler does not cope well
+ with large amounts of data. Be aware that the compressor may use an
+ amount of memory up to about 4000 times the uncompressed code/data
+ size (whichever is largest).
+
+- When you perform detailed size comparisons, always use the SLOW
+ compression mode with plenty of ORDERTRIES and compare the
+ "Ideal compressed total size" values. The INSTANT and FAST modes
+ are only intended for use during testing and to give a rough estimate
+ of the compressed size. Use the /REUSE option when making small
+ changes to achieve stable size comparison. Also note that the
+ compression is tuned for the 4k size target, so any size comparisons
+ you perform on smaller files might turn out to behave differently
+ when you get nearer to 4k.
+
+- As a matter of good conduct, do not use TINYIMPORT or UNSAFEIMPORT
+ if you can spare the space, and do not set HASHSIZE higher than
+ you need. In other words, if your final intro is well below the size
+ limit, remove the UNSAFEIMPORT option (if you added it in the
+ first place) and then lower HASHSIZE in order not to waste memory
+ unnecessarily. Also consider adding the high-performance GPU request
+ exports as described under the EXPORT option if your intro could
+ benefit from it.
+
+
+
+COMMON PROBLEMS, KNOWN BUGS AND LIMITATIONS
+-------------------------------------------
+
+Any DLL that is needed by a program that Crinkler compresses must be
+available to Crinkler itself. If you get the error message 'Could not
+open DLL ...', it means that Crinkler needed the DLL but could not
+find it. You must place it either in the same directory as the
+Crinkler executable or somewhere in the DLL path, such as
+C:\WINDOWS\system32. Alternatively, you can use the REPLACEDLL option
+to replace it by one that is available. If you get this message for
+msvcr?? DLLs, you have a dependency on the runtime DLL you need to get
+rid of. See the section on standard libraries.
+
+When running inside Visual Studio, the textual progress bars are not
+updated correctly, since the Visual Studio console does not flush the
+output until a newline is reached, even when explicitly flushed by the
+running program. Use the /PROGRESSGUI option to get a graphical
+progress bar.
+
+The code for parsing object and library files contains only a minimum
+of sanity checks. If you pass a corrupt file to Crinkler, it will most
+likely crash.
+
+The final compressed size must be less than 128k, or Crinkler will fail
+horribly. You shouldn't use it for such big files anyway.
+
+
+
+SUPPORT
+-------
+
+Try out Crinkler, and let us know what you think about it. If you have
+any problems, comments or suggestions, please write a message at the
+Pouet.net forum:
+
+http://www.pouet.net/prod.php?which=18158
+
+If you want to contact us directly, e.g. for sending us a file, write
+to authors@crinkler.net.
+
+If Crinkler crashes, it will write two dump files named
+dump Report for file out\leviathan-release.exe generated by Crinkler 2.1a on Thu Aug 8 22:25:37 2024
+ Options: /SUBSYSTEM:WINDOWS /ENTRY:entrypoint /COMPMODE:SLOW /SATURATE /HASHSIZE:1000 /HASHTRIES:300 /ORDERTRIES:9000 /RANGE:opengl32 /UNSAFEIMPORT /TRANSFORM:CALLS /TRUNCATEFLOATS:32 /UNALIGNCODE /NOINITIALIZERS Output file size: 4377Crinkler compression report
+Bits per byte: 0.1 0.5 1 2 3 5 7 9 12
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