feat: Generate for Emscripten 3.1.12 and SIMD features (#2259)

* chore: Remove unused emscripten versions

* feat: Generate for Emscripten 3.1.12 and SIMD features

* chore: Adjust for 3.1.12 folder strurcture to use `st` (single-threaded)

native/wasm/build.cake

@@ -5,6 +5,12 @@ DirectoryPath OUTPUT_PATH = MakeAbsolute(ROOT_PATH.Combine("output/native"));
 
 string SUPPORT_GPU_VAR = Argument("supportGpu", EnvironmentVariable("SUPPORT_GPU") ?? "true").ToLower();
 string EMSCRIPTEN_VERSION = Argument("emscriptenVersion", EnvironmentVariable("EMSCRIPTEN_VERSION") ?? "").ToLower();
+string[] EMSCRIPTEN_FEATURES = 
+    Argument("emscriptenFeatures", EnvironmentVariable("EMSCRIPTEN_FEATURES") ?? "")
+    .ToLower()
+    .Split(",")
+    .Where(f => f != "none")
+    .ToArray();
 bool SUPPORT_GPU = SUPPORT_GPU_VAR == "1" || SUPPORT_GPU_VAR == "true";
 
 string CC = Argument("cc", "emcc");
@@ -17,6 +23,7 @@ Task("libSkiaSharp")
     .WithCriteria(IsRunningOnLinux())
     .Does(() =>
 {
+    bool hasSimdEnabled = EMSCRIPTEN_FEATURES.Contains("simd");
 
     GnNinja($"wasm", "SkiaSharp",
         $"target_os='linux' " +
@@ -51,10 +58,11 @@ Task("libSkiaSharp")
         $"use_PIC=false " +
         $"extra_cflags=[ " +
         $"  '-DSKIA_C_DLL', '-DXML_POOR_ENTROPY', " + 
-        $"  '-DSKNX_NO_SIMD', '-DSK_DISABLE_AAA', '-DGR_GL_CHECK_ALLOC_WITH_GET_ERROR=0', " +
+        $" {(!hasSimdEnabled ? "'-DSKNX_NO_SIMD', " : "")} '-DSK_DISABLE_AAA', '-DGR_GL_CHECK_ALLOC_WITH_GET_ERROR=0', " +
         $"  '-s', 'WARN_UNALIGNED=1' " + // '-s', 'USE_WEBGL2=1' (experimental)
         $"] " +
-        $"extra_cflags_cc=[ '-frtti' ] " +
+        // SIMD support is based on https://github.com/google/skia/blob/1f193df9b393d50da39570dab77a0bb5d28ec8ef/modules/canvaskit/compile.sh#L57
+        $"extra_cflags_cc=[ '-frtti' { (hasSimdEnabled ? ", '-msimd128'" : "") } ] " +
         COMPILERS +
         ADDITIONAL_GN_ARGS);
 
@@ -88,6 +96,8 @@ Task("libSkiaSharp")
     var outDir = OUTPUT_PATH.Combine($"wasm");
     if (!string.IsNullOrEmpty(EMSCRIPTEN_VERSION))
         outDir = outDir.Combine("libSkiaSharp.a").Combine(EMSCRIPTEN_VERSION);
+    if (EMSCRIPTEN_FEATURES.Length != 0)
+        outDir = outDir.Combine(string.Join(",", EMSCRIPTEN_FEATURES));
     EnsureDirectoryExists(outDir);
     CopyFileToDirectory(a, outDir);
 });

scripts/azure-templates-stages.yml

@@ -368,13 +368,26 @@ stages:
             vmImage: ${{ parameters.VM_IMAGE_LINUX_NATIVE }}
             artifactName: native
             emscripten:
-              - 2.0.5
-              - 2.0.6
-              - 2.0.9
-              - 2.0.11
-              - 2.0.12
-              - 2.0.23
-              - 3.1.7
+              - 2.0.6:
+                displayName: 2.0.6
+                version: 2.0.6
+                features: none
+              - 2.0.23:
+                displayName: 2.0.23
+                version: 2.0.23
+                features: none
+              - 3.1.7:
+                displayName: 3.1.7
+                version: 3.1.7
+                features: none
+              - 3.1.12:
+                displayName: 3.1.12
+                version: 3.1.12
+                features: st
+              - 3.1.12:
+                displayName: '3.1.12_SIMD'
+                version: 3.1.12
+                features: simd
 
   - ${{ if ne(parameters.buildPipelineType, 'tests') }}:
     - stage: managed

scripts/azure-templates-wasm-matrix.yml

@@ -9,15 +9,15 @@ jobs:
   - ${{ each version in parameters.emscripten }}:
     - template: azure-templates-bootstrapper.yml
       parameters:
-        name: native_wasm_${{ replace(version, '.', '_') }}_linux
-        displayName: WASM (${{ version }})
+        name: native_wasm_${{ replace(version.displayName, '.', '_') }}_linux
+        displayName: WASM (${{ version.displayName }})
         buildExternals: ${{ parameters.buildExternals }}
         buildPipelineType: ${{ parameters.buildPipelineType }}
         vmImage: ${{ parameters.vmImage }}
         docker: scripts/Docker/wasm
         target: externals-wasm
-        dockerArgs: --build-arg EMSCRIPTEN_VERSION=${{ version }}
-        additionalArgs: --emscriptenVersion=${{ version }}
+        dockerArgs: --build-arg EMSCRIPTEN_VERSION=${{ version.version }}
+        additionalArgs: --emscriptenVersion=${{ version.version }} --emscriptenFeatures="${{ version.features }}"
         artifactName: ${{ parameters.artifactName }}
         postBuildSteps:
           - task: PublishBuildArtifacts@1