Merge branch 'main' into deprecatedMember

common/config.gni

@@ -28,6 +28,13 @@ declare_args() {
   #TODO(cyanglaz): Remove above comment about test flag when the entire iOS embedder supports app extension
   #https://github.com/flutter/flutter/issues/124289
   darwin_extension_safe = false
+
+  # Whether binary size optimizations with the assumption that Impeller is the
+  # only supported rendering engine are enabled.
+  #
+  # See [go/slimpeller-dashboard](https://github.com/orgs/flutter/projects/21)
+  # for details.
+  slimpeller = false
 }
 
 # feature_defines_list ---------------------------------------------------------
@@ -62,6 +69,10 @@ if (flutter_runtime_mode == "debug") {
   feature_defines_list += [ "FLUTTER_RUNTIME_MODE=0" ]
 }
 
+if (slimpeller) {
+  feature_defines_list += [ "SLIMPELLER=1" ]
+}
+
 if (is_ios || is_mac) {
   flutter_cflags_objc = [
     "-Werror=overriding-method-mismatch",

impeller/aiks/aiks_unittests.cc

@@ -3073,6 +3073,42 @@ TEST_P(AiksTest, MipmapGenerationWorksCorrectly) {
   ASSERT_TRUE(OpenPlaygroundHere(canvas.EndRecordingAsPicture()));
 }
 
+TEST_P(AiksTest, DrawAtlasPlusWideGamut) {
+  if (GetParam() != PlaygroundBackend::kMetal) {
+    GTEST_SKIP_("This backend doesn't yet support wide gamut.");
+  }
+
+  EXPECT_EQ(GetContext()->GetCapabilities()->GetDefaultColorFormat(),
+            PixelFormat::kR16G16B16A16Float);
+
+  // Draws the image as four squares stiched together.
+  auto atlas =
+      std::make_shared<Image>(CreateTextureForFixture("bay_bridge.jpg"));
+  auto size = atlas->GetSize();
+  // Divide image into four quadrants.
+  Scalar half_width = size.width / 2;
+  Scalar half_height = size.height / 2;
+  std::vector<Rect> texture_coordinates = {
+      Rect::MakeLTRB(0, 0, half_width, half_height),
+      Rect::MakeLTRB(half_width, 0, size.width, half_height),
+      Rect::MakeLTRB(0, half_height, half_width, size.height),
+      Rect::MakeLTRB(half_width, half_height, size.width, size.height)};
+  // Position quadrants adjacent to eachother.
+  std::vector<Matrix> transforms = {
+      Matrix::MakeTranslation({0, 0, 0}),
+      Matrix::MakeTranslation({half_width, 0, 0}),
+      Matrix::MakeTranslation({0, half_height, 0}),
+      Matrix::MakeTranslation({half_width, half_height, 0})};
+  std::vector<Color> colors = {Color::Red(), Color::Green(), Color::Blue(),
+                               Color::Yellow()};
+
+  Canvas canvas;
+  canvas.DrawAtlas(atlas, transforms, texture_coordinates, colors,
+                   BlendMode::kPlus, {}, std::nullopt, {});
+
+  ASSERT_TRUE(OpenPlaygroundHere(canvas.EndRecordingAsPicture()));
+}
+
 }  // namespace testing
 }  // namespace impeller
 

impeller/entity/shaders/blending/porter_duff_blend.frag

@@ -36,6 +36,12 @@ f16vec4 Sample(f16sampler2D texture_sampler, vec2 texture_coords) {
   return IPHalfSampleDecal(texture_sampler, texture_coords);
 }
 
+float16_t ClampAlpha(float16_t alpha) {
+  float16_t min = 0.0hf;
+  float16_t max = 1.0hf;
+  return clamp(alpha, min, max);
+}
+
 void main() {
   f16vec4 dst =
       texture(texture_sampler_dst, v_texture_coords) * frag_info.input_alpha;
@@ -45,4 +51,9 @@ void main() {
       dst * (frag_info.dst_coeff + src.a * frag_info.dst_coeff_src_alpha +
              src * frag_info.dst_coeff_src_color);
   frag_color *= frag_info.output_alpha;
+  // This currently needs a clamp so that floating point textures blend
+  // correctly in wide gamut. Remove if we switch to a fixed point extended
+  // range format.
+  // See https://github.com/flutter/flutter/issues/145933 .
+  frag_color.a = ClampAlpha(frag_color.a);
 }

impeller/tools/malioc.json

@@ -8434,8 +8434,8 @@
               "varying"
             ],
             "longest_path_cycles": [
-              0.21875,
-              0.21875,
+              0.234375,
+              0.234375,
               0.0,
               0.0,
               0.0,
@@ -8455,8 +8455,8 @@
               "varying"
             ],
             "shortest_path_cycles": [
-              0.21875,
-              0.21875,
+              0.234375,
+              0.234375,
               0.0,
               0.0,
               0.0,
@@ -8467,8 +8467,8 @@
               "varying"
             ],
             "total_cycles": [
-              0.21875,
-              0.21875,
+              0.234375,
+              0.234375,
               0.0,
               0.0,
               0.0,

lib/web_ui/lib/src/engine/skwasm/skwasm_impl/paragraph.dart

@@ -77,6 +77,9 @@ class SkwasmLineMetrics extends SkwasmObjectWrapper<RawLineMetrics> implements u
 
   @override
   int get lineNumber => lineMetricsGetLineNumber(handle);
+
+  int get startIndex => lineMetricsGetStartIndex(handle);
+  int get endIndex => lineMetricsGetEndIndex(handle);
 }
 
 class SkwasmParagraph extends SkwasmObjectWrapper<RawParagraph> implements ui.Paragraph {
@@ -243,15 +246,13 @@ class SkwasmParagraph extends SkwasmObjectWrapper<RawParagraph> implements ui.Pa
 
   @override
   ui.TextRange getLineBoundary(ui.TextPosition position) {
-    final int lineNumber = paragraphGetLineNumberAt(handle, position.offset);
-    final LineMetricsHandle metricsHandle =
-      paragraphGetLineMetricsAtIndex(handle, lineNumber);
-    final ui.TextRange range = ui.TextRange(
-      start: lineMetricsGetStartIndex(metricsHandle),
-      end: lineMetricsGetEndIndex(metricsHandle),
-    );
-    lineMetricsDispose(metricsHandle);
-    return range;
+    final int offset = position.offset;
+    for (final SkwasmLineMetrics metrics in computeLineMetrics()) {
+      if (offset >= metrics.startIndex && offset <= metrics.endIndex) {
+        return ui.TextRange(start: metrics.startIndex, end: metrics.endIndex);
+      }
+    }
+    return ui.TextRange.empty;
   }
 
   @override

lib/web_ui/test/ui/paragraph_builder_test.dart

@@ -59,6 +59,19 @@ Future<void> testMain() async {
     expect(upstreamWordBoundary, const TextRange(start: 0, end: 5));
   });
 
+  test('getLineBoundary at the last character position gives correct results', () {
+    final ParagraphBuilder builder = ParagraphBuilder(ParagraphStyle());
+    builder.addText('hello world');
+
+    final Paragraph paragraph = builder.build();
+    paragraph.layout(const ParagraphConstraints(width: double.infinity));
+
+    final TextRange lineBoundary = paragraph.getLineBoundary(const TextPosition(
+      offset: 11,
+    ));
+    expect(lineBoundary, const TextRange(start: 0, end: 11));
+  });
+
   test('build and layout a paragraph with an empty addText', () {
     final ParagraphBuilder builder = ParagraphBuilder(ParagraphStyle());
     builder.addText('');

testing/impeller_golden_tests_output.txt

@@ -436,6 +436,7 @@ impeller_Play_AiksTest_DrawAdvancedBlendPartlyOffscreen_Vulkan.png
 impeller_Play_AiksTest_DrawAtlasAdvancedAndTransform_Metal.png
 impeller_Play_AiksTest_DrawAtlasAdvancedAndTransform_OpenGLES.png
 impeller_Play_AiksTest_DrawAtlasAdvancedAndTransform_Vulkan.png
+impeller_Play_AiksTest_DrawAtlasPlusWideGamut_Metal.png
 impeller_Play_AiksTest_DrawAtlasWithColorAdvancedAndTransform_Metal.png
 impeller_Play_AiksTest_DrawAtlasWithColorAdvancedAndTransform_OpenGLES.png
 impeller_Play_AiksTest_DrawAtlasWithColorAdvancedAndTransform_Vulkan.png

testing/scenario_app/android/app/src/main/java/dev/flutter/scenarios/TestActivity.java

@@ -9,8 +9,12 @@
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
+import android.view.Window;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.core.view.WindowCompat;
+import androidx.core.view.WindowInsetsCompat;
+import androidx.core.view.WindowInsetsControllerCompat;
 import io.flutter.FlutterInjector;
 import io.flutter.embedding.engine.FlutterShellArgs;
 import io.flutter.embedding.engine.loader.FlutterLoader;
@@ -25,6 +29,7 @@ public abstract class TestActivity extends TestableFlutterActivity {
   @Override
   protected void onCreate(@Nullable Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
+    hideSystemBars(getWindow());
     testFlutterLoaderCallbackWhenInitializedTwice();
   }
 
@@ -104,4 +109,13 @@ protected void testFlutterLoaderCallbackWhenInitializedTwice() {
           }
         });
   }
+
+  private static void hideSystemBars(Window window) {
+    final WindowInsetsControllerCompat insetController =
+        WindowCompat.getInsetsController(window, window.getDecorView());
+    assert insetController != null;
+    insetController.setSystemBarsBehavior(
+        WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
+    insetController.hide(WindowInsetsCompat.Type.systemBars());
+  }
 }

testing/scenario_app/bin/run_android_tests.dart

@@ -298,23 +298,17 @@ Future<void> _run({
     });
 
     await step('Configuring emulator...', () async {
-      final List<List<String>> adbShellCommands = <List<String>> [
-        // Try to close all OS popups in the emulator, like "System UI stopped working".
-        <String>['am', 'broadcast', '-a', 'android.intent.action.CLOSE_SYSTEM_DIALOGS'],
-
-        // Don't show "this is how you exit fullscreen mode".
-        <String>['settings', 'put', 'secure', 'immersive_mode_confirmations', 'confirmed'],
-
-        // Hide all system bars.
-        <String>['settings', 'put', 'global', 'policy_control', 'immersive.full=*'],
-      ];
-
-      // Run all the commands.
-      for (final List<String> command in adbShellCommands) {
-        final int exitCode = await pm.runAndForward(<String>[adb.path, 'shell', ...command]);
-        if (exitCode != 0) {
-          panic(<String>['could not run command: ${command.join(' ')}']);
-        }
+      final int exitCode = await pm.runAndForward(<String>[
+        adb.path,
+        'shell',
+        'settings',
+        'put',
+        'secure',
+        'immersive_mode_confirmations',
+        'confirmed',
+      ]);
+      if (exitCode != 0) {
+        panic(<String>['could not configure emulator']);
       }
     });
 

tools/gn

@@ -68,6 +68,9 @@ def get_out_dir(args):
   if args.darwin_extension_safe:
     target_dir.append('extension_safe')
 
+  if args.slimpeller:
+    target_dir.append('slimpeller')
+
   if args.target_dir != '':
     target_dir = [args.target_dir]
 
@@ -1260,6 +1263,15 @@ def parse_args(args):
       help='Do not run GN. Instead configure the Impeller cmake example build.',
   )
 
+  parser.add_argument(
+      '--slimpeller',
+      default=False,
+      action='store_true',
+      help='Enable optimizations that attempt to reduce binary size of the ' +
+      'Flutter engine by assuming only the Impeller rendering engine is supported.' +
+      'See [go/slimpeller-dashboard](https://github.com/orgs/flutter/projects/21) for details.'
+  )
+
   # Sanitizers.
   parser.add_argument('--asan', default=False, action='store_true')
   parser.add_argument('--lsan', default=False, action='store_true')