fix: async Task based logic to IEnuemrator logic on WebpAnimation.cs for WebGL build

- ref: https://forum.unity.com/threads/async-await-and-webgl-builds.472994/

Author: netpyoung

unity_project/Assets/Samples/example2/WebpAnimation.cs

@@ -1,6 +1,6 @@
 using System;
+using System.Collections;
 using System.Collections.Generic;
-using System.Threading.Tasks;
 using unity.libwebp;
 using unity.libwebp.Interop;
 using UnityEngine;
@@ -12,7 +12,7 @@ public class WebpAnimation : MonoBehaviour
 {
     public RawImage image2;
 
-    private async void Start()
+    private IEnumerator Start()
     {
         List<(Texture2D, int)> lst = LoadAnimation("cat");
 
@@ -22,22 +22,25 @@ private async void Start()
             (Texture2D texture, int timestamp) = lst[i];
             if (image2 == null)
             {
-                return;
+                yield break;
             }
             image2.texture = texture;
             int delay = timestamp - prevTimestamp;
             prevTimestamp = timestamp;
+            
             if (delay < 0)
             {
                 delay = 0;
             }
-            await Task.Delay(delay);
+
+            yield return new WaitForSeconds(delay / 1000.0f);
             if (i == lst.Count - 1)
             {
                 i = -1;
             }
         }
     }
+
     private unsafe List<(Texture2D, int)> LoadAnimation(string loadPath)
     {
         List<(Texture2D, int)> ret = new List<(Texture2D, int)>();

unity_project/ProjectSettings/EditorBuildSettings.asset

@@ -6,6 +6,6 @@ EditorBuildSettings:
   serializedVersion: 2
   m_Scenes:
   - enabled: 1
-    path: Assets/example2/animation.unity
+    path: Assets/Samples/example2/animation.unity
     guid: 543921e829fddb948a8c0611f462aaca
   m_configObjects: {}

unity_project/ProjectSettings/ProjectSettings.asset

@@ -3,7 +3,7 @@
 --- !u!129 &1
 PlayerSettings:
   m_ObjectHideFlags: 0
-  serializedVersion: 22
+  serializedVersion: 23
   productGUID: ba93c09bd9b834fdbb5f25615402aea6
   AndroidProfiler: 0
   AndroidFilterTouchesWhenObscured: 0
@@ -145,11 +145,13 @@ PlayerSettings:
     enable360StereoCapture: 0
   isWsaHolographicRemotingEnabled: 0
   enableFrameTimingStats: 0
+  enableOpenGLProfilerGPURecorders: 1
   useHDRDisplay: 0
   D3DHDRBitDepth: 0
   m_ColorGamuts: 00000000
   targetPixelDensity: 30
   resolutionScalingMode: 0
+  resetResolutionOnWindowResize: 0
   androidSupportedAspectRatio: 1
   androidMaxAspectRatio: 2.1
   applicationIdentifier:
@@ -160,7 +162,7 @@ PlayerSettings:
     tvOS: 0
   overrideDefaultApplicationIdentifier: 0
   AndroidBundleVersionCode: 1
-  AndroidMinSdkVersion: 19
+  AndroidMinSdkVersion: 22
   AndroidTargetSdkVersion: 0
   AndroidPreferredInstallLocation: 1
   aotOptions: 
@@ -216,6 +218,7 @@ PlayerSettings:
   iOSLaunchScreeniPadCustomStoryboardPath: 
   iOSDeviceRequirements: []
   iOSURLSchemes: []
+  macOSURLSchemes: []
   iOSBackgroundModes: 0
   iOSMetalForceHardShadows: 0
   metalEditorSupport: 0
@@ -405,6 +408,9 @@ PlayerSettings:
   - m_BuildTarget: iOSSupport
     m_APIs: 10000000
     m_Automatic: 1
+  - m_BuildTarget: AndroidPlayer
+    m_APIs: 0b00000008000000
+    m_Automatic: 0
   m_BuildTargetVRSettings: []
   openGLRequireES31: 0
   openGLRequireES31AEP: 0
@@ -422,6 +428,7 @@ PlayerSettings:
     m_EncodingQuality: 1
   m_BuildTargetGroupLightmapSettings: []
   m_BuildTargetNormalMapEncoding: []
+  m_BuildTargetDefaultTextureCompressionFormat: []
   playModeTestRunnerEnabled: 0
   runPlayModeTestAsEditModeTest: 0
   actionOnDotNetUnhandledException: 1
@@ -440,6 +447,7 @@ PlayerSettings:
   switchScreenResolutionBehavior: 2
   switchUseCPUProfiler: 0
   switchUseGOLDLinker: 0
+  switchLTOSetting: 0
   switchApplicationID: 0x01004b9000490000
   switchNSODependencies: 
   switchTitleNames_0: 
@@ -570,7 +578,9 @@ PlayerSettings:
   switchPlayerConnectionEnabled: 1
   switchUseNewStyleFilepaths: 0
   switchUseMicroSleepForYield: 1
+  switchEnableRamDiskSupport: 0
   switchMicroSleepForYieldTime: 25
+  switchRamDiskSpaceSize: 12
   ps4NPAgeRating: 12
   ps4NPTitleSecret: 
   ps4NPTrophyPackPath: 
@@ -641,7 +651,6 @@ PlayerSettings:
   ps4videoRecordingFeaturesUsed: 0
   ps4contentSearchFeaturesUsed: 0
   ps4CompatibilityPS5: 0
-  ps4AllowPS5Detection: 0
   ps4GPU800MHz: 1
   ps4attribEyeToEyeDistanceSettingVR: 0
   ps4IncludedModules: []
@@ -661,7 +670,7 @@ PlayerSettings:
   webGLTemplate: APPLICATION:Default
   webGLAnalyzeBuildSize: 0
   webGLUseEmbeddedResources: 0
-  webGLCompressionFormat: 1
+  webGLCompressionFormat: 2
   webGLWasmArithmeticExceptions: 0
   webGLLinkerTarget: 1
   webGLThreadsSupport: 0
@@ -677,7 +686,6 @@ PlayerSettings:
   suppressCommonWarnings: 1
   allowUnsafeCode: 1
   useDeterministicCompilation: 1
-  useReferenceAssemblies: 1
   enableRoslynAnalyzers: 1
   additionalIl2CppArgs: 
   scriptingRuntimeVersion: 1
@@ -714,6 +722,7 @@ PlayerSettings:
   metroFTAName: 
   metroFTAFileTypes: []
   metroProtocolName: 
+  vcxProjDefaultLanguage: 
   XboxOneProductId: 
   XboxOneUpdateKey: 
   XboxOneSandboxId: 
@@ -763,4 +772,6 @@ PlayerSettings:
   organizationId: 
   cloudEnabled: 0
   legacyClampBlendShapeWeights: 1
+  playerDataPath: 
+  forceSRGBBlit: 1
   virtualTexturingSupportEnabled: 0