Apply an aggressive set of ultimately deterministic optimizations to
raster image files where an actual file size reduction of not less than
50% was possible without the removal of intrinsic properties such as
alpha channels. Rendered image dimensions were always left unchanged.
The primary mechanisms employed during optimization are:
- PNG color mode conversion from TrueColor to indexed palette
+ Accomplished using NeuQuant neural-net color quantization algorithm
- Stripping of data blocks containing irrelevant information, such as:
+ XMP metadata fields
+ Embedded comment fields
+ ICC color profiles (simple graphics with basic color schemes only)
+ EXIF profiles
- Re-compression using "best" or "smallest" profile presets
All modifications are performed on lossless image formats and closely
visually inspected after processing to ensure no loss of apparent
details or introduction of new, unwanted artifacts.
Toolset used:
- RIOT (Radical Image Optimization Tool), v2024.1.0 64-bit
- AdvanceCOMP (part of the Advance Projects), v2.6 64-bit
- optiPNG, v7.9.1 64-bit
- PNGOUT, v2015.02.13 32-bit
Signed-off-by: Peter J. Mello <admin@petermello.net>
* Actually read CLI args in emscripten
* Fix fetchfs manifest parsing, increase download chunk size
The chunk size should probably be made a parameter in the future. The
larger chunk size trades longer hitches for fewer hitches.
* Add exec command driver and API functions for emscripten.
Under WASMFS, stdin/stdout can't be customized the way they can with
the JS FS implementation. Also, this approach frees up stdin/stdout
and simplifies interaction with the command interface for web embedders.
* fixup upload paths, show use of new emscripten cmd interface
* Add JS library function names to EXPORTS as well as EXPORTED_FUNCTIONS for older emsdk versions
* workerized RA
* Workerized (non-async) web player, using OPFS
This patch eliminates the need for asyncify and uses modern filesystem
APIs instead of the deprecated, unmaintained BrowserFS.
This is a WIP patch because it won't fully work until these two
Emscripten PRs land and are released:
https://github.com/emscripten-core/emscripten/pull/23518https://github.com/emscripten-core/emscripten/pull/23021
The former fixes an offscreen canvas context recreation bug, and the
latter adds an equivalent to BrowserFS's XHR filesystem (but without
the hazardous running-XHR-on-the-main-thread problem).
The biggest issue is that local storage of users who were using the
old version of the webplayer will be gone when they switch to the new
webplayer. I don't have a good story for converting the old BrowserFS
IDBFS contents into the new OPFS filesystem (the move is worth doing
because OPFS supports seeking and reading only bits of a file, and
because BrowserFS is dead).
I've kept around the old libretro webplayer under
pkg/emscripten/libretro-classic, and with these make flags you can
build a non-workerized RA that uses asyncify to sleep as before:
make -f Makefile.emscripten libretro=$CORE HAVE_WORKER=0 HAVE_WASMFS=0 PTHREAD=0 HAVE_AL=1
I also moved the default directory for core content on emscripten to
not be a subdirectory of the local filesystem mount, because it's
confusing to have a subdirectory that's lazily fetched and not
mirrored to the local storage. I think it won't impact existing users
of the classic web player because they already have a retroarch.cfg in
place.
* Get fetchfs working without manifest support
* makefile fixes
* fix scaling, remove zip dependency
* Support asset/cheats/etc downloaders for emscripten
- Add http transfer support for emscripten
- At the task_http level, not the net_http level --- so no netplay
or webdav.
- Change default paths to be more like other platforms
- Gives us smaller bundles and a faster boot time
- Had to work around a task queue bug on Emscripten
- I made the smallest possible change to do it, but it may be better
to fix in rthread.c
* Load an emscripten file_packager package on first run
If no ozone assets are present, load a libretro_minimal package
created using Emscripten's built-in file packager.
* updated readme, removed indexer from wasmfs libretro-web
* Put back zip dependency, load asset bundle into opfs on first run
* fix upload path
* Remove unused function
* easy testing setup for two multithreaded conditions
1. make PROXY_TO_PTHREAD=1 (slower)
2. make PROXY_TO_PTHREAD=0 (bad audio, because doesn't sleep in
openal.c)
* Remove condition on sleep in openal
also make input_driver check existence of drv->axis, drv->button
before calling them.
* Fix resizing under EGL
* Don't force config file path on emscripten
* Add time.h include to netplay, default HAVE_NETPLAYDISCOVERY to 0
* Remove nearly all proxied joypad calls under emscripten
* Fix file uploads under firefox
* Fix safari API uses, but Safari still hangs in OPFS filesystem mount
I think this can be fixed by moving the backend creation off the main
thread.
* Move filesystem init into emscripten C entry point
* Setup filesystems off of main thread
* re-set default player to async
Also improve Safari compatibility under proxy-to-pthread condition
* Safari upload file fixes
* Remove some excess prints
* Fix typo
* for iOS: update launch screen to match UI
* use higher resolution invader
* adjust Y constraint (diff invader body proportion)
* for iOS: update Launch Screen to match app icon/ui
* update iOS icon—match shadow on other platforms
* icon source svgs to media folder for others’ reuse
* iOS App Icon revision, fix asset index mismatch
LibretroAdmin