Merge branch 'rc/1.25.6' into release

Filament does not yet fully support threads with WASM, but this is a
baby step in that direction.

To enable experimental pthreads support, enable the WEBGL_PTHREADS CMake
option. This will enable pthreads support in `gltfio` and `utils`, which
is known to work, but not when served with GitHub Pages.

The web server must emit COOP, COEP and CORP headers, so our build
instructions now recommend the use of `emrun` for local testing.

This also changes our demos so that they do not use unpkg, which
does not work when using `emrun`, due to cross-origin restrictions.

README.md

@@ -31,7 +31,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'com.google.android.filament:filament-android:1.25.5'
+    implementation 'com.google.android.filament:filament-android:1.25.6'
 }
 ```
 
@@ -51,7 +51,7 @@ Here are all the libraries available in the group `com.google.android.filament`:
 iOS projects can use CocoaPods to install the latest release:
 
 ```
-pod 'Filament', '~> 1.25.5'
+pod 'Filament', '~> 1.25.6'
 ```
 
 ### Snapshots

RELEASE_NOTES.md

@@ -7,7 +7,7 @@ A new header is inserted each time a *tag* is created.
 
 ## v1.25.6
 
-- Add CONFIG_MINSPEC_UBO_SIZE as a nicer way to allow exceeding the ES3.0 minspec.
+- engine: Add `CONFIG_MINSPEC_UBO_SIZE` as a nicer way to allow exceeding the ES3.0 minspec.
 - gltfio: minor efficiency improvement for Android and WebGL builds.
 - gltfio: add support for concurrent texture downloading and decoding.
 

android/gradle.properties

@@ -1,5 +1,5 @@
 GROUP=com.google.android.filament
-VERSION_NAME=1.25.5
+VERSION_NAME=1.25.6
 
 POM_DESCRIPTION=Real-time physically based rendering engine for Android.
 

ios/CocoaPods/Filament.podspec

@@ -1,12 +1,12 @@
 Pod::Spec.new do |spec|
   spec.name = "Filament"
-  spec.version = "1.25.5"
+  spec.version = "1.25.6"
   spec.license = { :type => "Apache 2.0", :file => "LICENSE" }
   spec.homepage = "https://google.github.io/filament"
   spec.authors = "Google LLC."
   spec.summary = "Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS, and WASM/WebGL."
   spec.platform = :ios, "11.0"
-  spec.source = { :http => "https://github.com/google/filament/releases/download/v1.25.5/filament-v1.25.5-ios.tgz" }
+  spec.source = { :http => "https://github.com/google/filament/releases/download/v1.25.6/filament-v1.25.6-ios.tgz" }
 
   # Fix linking error with Xcode 12; we do not yet support the simulator on Apple silicon.
   spec.pod_target_xcconfig = {

web/filament-js/package.json

@@ -1,6 +1,6 @@
 {
   "name": "filament",
-  "version": "1.25.5",
+  "version": "1.25.6",
   "description": "Real-time physically based rendering engine",
   "main": "filament.js",
   "module": "filament.js",