Add option 'wasm' to compile to WebAssembly in web export #6994
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
WebAssembly is still experimental, so disabled by default. The HTML shell file now uses $GODOT_BASE, a placeholder for the base filename, instead of $GODOT_JS, $GODOT_MEM and $GODOT_FS.
|
This is fantastic, I am going to start spending more time on webassembly in 2 months (and html5 backend in general), did you manage to try godot in wasm mode? How did you find it performs (and loads?) |
akien-mga
reviewed
Oct 31, 2016
| @@ -351,24 +351,7 @@ | |||
| }; | |||
| }; | |||
| //]]></script> | |||
| <script type="text/javascript" src="$GODOT_FS"></script> | |||
| <script> | |||
There was a problem hiding this comment.
Is this part no longer needed?
There was a problem hiding this comment.
Yes, Emscripten now inserts this piece of code in place of the {{ SCRIPT }} placeholder at compile-time, because we pass the --shell-file argument to the linker. This code was so far hard-coded, but for WebAssembly we need different code here, so we leave it to Emscripten.
akien-mga
approved these changes
Oct 31, 2016
Answered this on IRC, but for everyone else interested in my experience so far:
|
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
e.g.
scons p=javascript wasm=yesWebAssembly is experimental, so disabled by default.
The standard is still in flux, so the compile toolchain is occasionally broken.
Compiling for WebAssembly requires the
incoming-branch of Emscripten.Running WebAssembly requires nightly browser builds with WebAssembly flag enabled.
If
LLVM_ROOTin~/.emscriptenis set to Emscripten's "fastcomp" fork of clang, Godot will be compiled perasm2wasm(i.e. first compile to asm.js as usual, then translate that to wasm). This method of compilation currently has better chances of finishing successfully.If
LLVM_ROOTpoints to clang built with experimental WebAssembly backend (-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly), the output will be translated pers2wasmto WebAssembly. This method should eventually offer better performance.The HTML shell file now uses
$GODOT_BASE, a placeholder for the base filename, instead of$GODOT_JS,$GODOT_MEMand$GODOT_FS.