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[Web] Fix thread+dlink builds with emscripten 3.1.61+git #93143

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merged 4 commits into from
Jun 14, 2024
Merged

[Web] Fix thread+dlink builds with emscripten 3.1.61+git #93143

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e874cd8
[Web] Remove space between emscripten "-s" flags and the option
Faless Jun 13, 2024
7af8c49
[Web] Force emcc to use "wasm" longjmp mode
Faless Jun 13, 2024
c95bd2d
[Web] Disable thorvg threads on the Web
Faless Jun 13, 2024
27d67b5
[Web] Use the module config to preload GDExtension libraries.
Faless Jun 13, 2024
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4 changes: 2 additions & 2 deletions platform/web/SCsub
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Original file line number Diff line number Diff line change
Expand Up @@ -65,8 +65,8 @@ if env["dlink_enabled"]:
# We use IDBFS. Since Emscripten 1.39.1 it needs to be linked explicitly.
sys_env.Append(LIBS=["idbfs.js"])
# Configure it as a main module (dynamic linking support).
sys_env["CCFLAGS"].remove("SIDE_MODULE=2")
sys_env["LINKFLAGS"].remove("SIDE_MODULE=2")
sys_env["CCFLAGS"].remove("-sSIDE_MODULE=2")
sys_env["LINKFLAGS"].remove("-sSIDE_MODULE=2")
sys_env.Append(CCFLAGS=["-s", "MAIN_MODULE=1"])
sys_env.Append(LINKFLAGS=["-s", "MAIN_MODULE=1"])
sys_env.Append(LINKFLAGS=["-s", "EXPORT_ALL=1"])
Expand Down
54 changes: 29 additions & 25 deletions platform/web/detect.py
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Expand Up @@ -107,13 +107,13 @@ def configure(env: "SConsEnvironment"):
env["use_assertions"] = True

if env["use_assertions"]:
env.Append(LINKFLAGS=["-s", "ASSERTIONS=1"])
env.Append(LINKFLAGS=["-sASSERTIONS=1"])

if env.editor_build and env["initial_memory"] < 64:
print("Note: Forcing `initial_memory=64` as it is required for the web editor.")
env["initial_memory"] = 64

env.Append(LINKFLAGS=["-s", "INITIAL_MEMORY=%sMB" % env["initial_memory"]])
env.Append(LINKFLAGS=["-sINITIAL_MEMORY=%sMB" % env["initial_memory"]])

## Copy env variables.
env["ENV"] = os.environ
Expand Down Expand Up @@ -142,7 +142,7 @@ def configure(env: "SConsEnvironment"):
env.Append(CCFLAGS=["-fsanitize=leak"])
env.Append(LINKFLAGS=["-fsanitize=leak"])
if env["use_safe_heap"]:
env.Append(LINKFLAGS=["-s", "SAFE_HEAP=1"])
env.Append(LINKFLAGS=["-sSAFE_HEAP=1"])

# Closure compiler
if env["use_closure_compiler"]:
Expand Down Expand Up @@ -204,29 +204,29 @@ def configure(env: "SConsEnvironment"):
if env["opengl3"]:
env.AppendUnique(CPPDEFINES=["GLES3_ENABLED"])
# This setting just makes WebGL 2 APIs available, it does NOT disable WebGL 1.
env.Append(LINKFLAGS=["-s", "MAX_WEBGL_VERSION=2"])
env.Append(LINKFLAGS=["-sMAX_WEBGL_VERSION=2"])
# Allow use to take control of swapping WebGL buffers.
env.Append(LINKFLAGS=["-s", "OFFSCREEN_FRAMEBUFFER=1"])
env.Append(LINKFLAGS=["-sOFFSCREEN_FRAMEBUFFER=1"])
# Breaking change since emscripten 3.1.51
# https://github.com/emscripten-core/emscripten/blob/main/ChangeLog.md#3151---121323
if cc_semver >= (3, 1, 51):
# Enables the use of *glGetProcAddress()
env.Append(LINKFLAGS=["-s", "GL_ENABLE_GET_PROC_ADDRESS=1"])
env.Append(LINKFLAGS=["-sGL_ENABLE_GET_PROC_ADDRESS=1"])

if env["javascript_eval"]:
env.Append(CPPDEFINES=["JAVASCRIPT_EVAL_ENABLED"])

stack_size_opt = "STACK_SIZE" if cc_semver >= (3, 1, 25) else "TOTAL_STACK"
env.Append(LINKFLAGS=["-s", "%s=%sKB" % (stack_size_opt, env["stack_size"])])
env.Append(LINKFLAGS=["-s%s=%sKB" % (stack_size_opt, env["stack_size"])])

if env["threads"]:
# Thread support (via SharedArrayBuffer).
env.Append(CPPDEFINES=["PTHREAD_NO_RENAME"])
env.Append(CCFLAGS=["-s", "USE_PTHREADS=1"])
env.Append(LINKFLAGS=["-s", "USE_PTHREADS=1"])
env.Append(LINKFLAGS=["-s", "DEFAULT_PTHREAD_STACK_SIZE=%sKB" % env["default_pthread_stack_size"]])
env.Append(LINKFLAGS=["-s", "PTHREAD_POOL_SIZE=8"])
env.Append(LINKFLAGS=["-s", "WASM_MEM_MAX=2048MB"])
env.Append(CCFLAGS=["-sUSE_PTHREADS=1"])
env.Append(LINKFLAGS=["-sUSE_PTHREADS=1"])
env.Append(LINKFLAGS=["-sDEFAULT_PTHREAD_STACK_SIZE=%sKB" % env["default_pthread_stack_size"]])
env.Append(LINKFLAGS=["-sPTHREAD_POOL_SIZE=8"])
env.Append(LINKFLAGS=["-sWASM_MEM_MAX=2048MB"])
elif env["proxy_to_pthread"]:
print_warning('"threads=no" support requires "proxy_to_pthread=no", disabling proxy to pthread.')
env["proxy_to_pthread"] = False
Expand All @@ -248,8 +248,8 @@ def configure(env: "SConsEnvironment"):
print_error("GDExtension support requires emscripten >= 3.1.14, detected: %s.%s.%s" % cc_semver)
sys.exit(255)

env.Append(CCFLAGS=["-s", "SIDE_MODULE=2"])
env.Append(LINKFLAGS=["-s", "SIDE_MODULE=2"])
env.Append(CCFLAGS=["-sSIDE_MODULE=2"])
env.Append(LINKFLAGS=["-sSIDE_MODULE=2"])
env.Append(CCFLAGS=["-fvisibility=hidden"])
env.Append(LINKFLAGS=["-fvisibility=hidden"])
env.extra_suffix = ".dlink" + env.extra_suffix
Expand All @@ -259,37 +259,41 @@ def configure(env: "SConsEnvironment"):

# Run the main application in a web worker
if env["proxy_to_pthread"]:
env.Append(LINKFLAGS=["-s", "PROXY_TO_PTHREAD=1"])
env.Append(LINKFLAGS=["-sPROXY_TO_PTHREAD=1"])
env.Append(CPPDEFINES=["PROXY_TO_PTHREAD_ENABLED"])
env.Append(LINKFLAGS=["-s", "EXPORTED_RUNTIME_METHODS=['_emscripten_proxy_main']"])
env.Append(LINKFLAGS=["-sEXPORTED_RUNTIME_METHODS=['_emscripten_proxy_main']"])
# https://github.com/emscripten-core/emscripten/issues/18034#issuecomment-1277561925
env.Append(LINKFLAGS=["-s", "TEXTDECODER=0"])
env.Append(LINKFLAGS=["-sTEXTDECODER=0"])
# BigInt support to pass object pointers between contexts
needs_wasm_bigint = True

if needs_wasm_bigint:
env.Append(LINKFLAGS=["-s", "WASM_BIGINT"])
env.Append(LINKFLAGS=["-sWASM_BIGINT"])

# Reduce code size by generating less support code (e.g. skip NodeJS support).
env.Append(LINKFLAGS=["-s", "ENVIRONMENT=web,worker"])
env.Append(LINKFLAGS=["-sENVIRONMENT=web,worker"])

# Wrap the JavaScript support code around a closure named Godot.
env.Append(LINKFLAGS=["-s", "MODULARIZE=1", "-s", "EXPORT_NAME='Godot'"])
env.Append(LINKFLAGS=["-sMODULARIZE=1", "-sEXPORT_NAME='Godot'"])

# Force long jump mode to 'wasm'
env.Append(CCFLAGS=["-sSUPPORT_LONGJMP='wasm'"])
env.Append(LINKFLAGS=["-sSUPPORT_LONGJMP='wasm'"])
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# Allow increasing memory buffer size during runtime. This is efficient
# when using WebAssembly (in comparison to asm.js) and works well for
# us since we don't know requirements at compile-time.
env.Append(LINKFLAGS=["-s", "ALLOW_MEMORY_GROWTH=1"])
env.Append(LINKFLAGS=["-sALLOW_MEMORY_GROWTH=1"])

# Do not call main immediately when the support code is ready.
env.Append(LINKFLAGS=["-s", "INVOKE_RUN=0"])
env.Append(LINKFLAGS=["-sINVOKE_RUN=0"])

# callMain for manual start, cwrap for the mono version.
env.Append(LINKFLAGS=["-s", "EXPORTED_RUNTIME_METHODS=['callMain','cwrap']"])
env.Append(LINKFLAGS=["-sEXPORTED_RUNTIME_METHODS=['callMain','cwrap']"])

# Add code that allow exiting runtime.
env.Append(LINKFLAGS=["-s", "EXIT_RUNTIME=1"])
env.Append(LINKFLAGS=["-sEXIT_RUNTIME=1"])

# This workaround creates a closure that prevents the garbage collector from freeing the WebGL context.
# We also only use WebGL2, and changing context version is not widely supported anyway.
env.Append(LINKFLAGS=["-s", "GL_WORKAROUND_SAFARI_GETCONTEXT_BUG=0"])
env.Append(LINKFLAGS=["-sGL_WORKAROUND_SAFARI_GETCONTEXT_BUG=0"])
5 changes: 4 additions & 1 deletion platform/web/js/engine/config.js
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Expand Up @@ -271,12 +271,13 @@ const InternalConfig = function (initConfig) { // eslint-disable-line no-unused-
*/
Config.prototype.getModuleConfig = function (loadPath, response) {
let r = response;
const gdext = this.gdextensionLibs;
return {
'print': this.onPrint,
'printErr': this.onPrintError,
'thisProgram': this.executable,
'noExitRuntime': false,
'dynamicLibraries': [`${loadPath}.side.wasm`],
'dynamicLibraries': [`${loadPath}.side.wasm`].concat(this.gdextensionLibs),
'instantiateWasm': function (imports, onSuccess) {
function done(result) {
onSuccess(result['instance'], result['module']);
Expand All @@ -300,6 +301,8 @@ const InternalConfig = function (initConfig) { // eslint-disable-line no-unused-
return `${loadPath}.audio.worklet.js`;
} else if (path.endsWith('.js')) {
return `${loadPath}.js`;
} else if (path in gdext) {
return path;
} else if (path.endsWith('.side.wasm')) {
return `${loadPath}.side.wasm`;
} else if (path.endsWith('.wasm')) {
Expand Down
24 changes: 9 additions & 15 deletions platform/web/js/engine/engine.js
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Original file line number Diff line number Diff line change
Expand Up @@ -163,25 +163,19 @@ const Engine = (function () {
me.rtenv['initConfig'](config);

// Preload GDExtension libraries.
const libs = [];
if (me.config.gdextensionLibs.length > 0 && !me.rtenv['loadDynamicLibrary']) {
return Promise.reject(new Error('GDExtension libraries are not supported by this engine version. '
+ 'Enable "Extensions Support" for your export preset and/or build your custom template with "dlink_enabled=yes".'));
}
me.config.gdextensionLibs.forEach(function (lib) {
libs.push(me.rtenv['loadDynamicLibrary'](lib, { 'loadAsync': true }));
});
return Promise.all(libs).then(function () {
return new Promise(function (resolve, reject) {
preloader.preloadedFiles.forEach(function (file) {
me.rtenv['copyToFS'](file.path, file.buffer);
});
preloader.preloadedFiles.length = 0; // Clear memory
me.rtenv['callMain'](me.config.args);
initPromise = null;
me.installServiceWorker();
resolve();
});
return new Promise(function (resolve, reject) {
for (const file of preloader.preloadedFiles) {
me.rtenv['copyToFS'](file.path, file.buffer);
}
preloader.preloadedFiles.length = 0; // Clear memory
me.rtenv['callMain'](me.config.args);
initPromise = null;
me.installServiceWorker();
resolve();
});
});
},
Expand Down
2 changes: 2 additions & 0 deletions thirdparty/thorvg/inc/config.h
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,9 @@
#define THORVG_SVG_LOADER_SUPPORT
#define THORVG_PNG_LOADER_SUPPORT
#define THORVG_JPG_LOADER_SUPPORT
#ifndef WEB_ENABLED
#define THORVG_THREAD_SUPPORT
#endif

// Added conditionally if webp module is enabled.
//#define THORVG_WEBP_LOADER_SUPPORT
Expand Down
2 changes: 2 additions & 0 deletions thirdparty/thorvg/update-thorvg.sh
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Expand Up @@ -38,7 +38,9 @@ cat << EOF > ../inc/config.h
#define THORVG_SVG_LOADER_SUPPORT
#define THORVG_PNG_LOADER_SUPPORT
#define THORVG_JPG_LOADER_SUPPORT
#ifndef WEB_ENABLED
#define THORVG_THREAD_SUPPORT
#endif

// Added conditionally if webp module is enabled.
//#define THORVG_WEBP_LOADER_SUPPORT
Expand Down
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