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Added negative test and blur test to the wide gamut tests. (#120914)
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* Added negative test and blur test to the wide gamut tests.

* switched back to dstOver

* fixed blur test

* analysis warnings

* analyzer
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@gaaclarke
gaaclarke authored Feb 22, 2023
1 parent dad9eb2 commit 4c25587
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Showing 2 changed files with 188 additions and 76 deletions.
50 changes: 37 additions & 13 deletions dev/integration_tests/wide_gamut_test/integration_test/app_test.dart
View file
Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,10 @@ bool _isAlmost(double x, double y, double epsilon) {
return (x - y).abs() < epsilon;
}

bool _findDeepRedBGRA10(Uint8List bytes, int width, int height) {
List<double> _deepRed = <double>[1.0931, -0.2268, -0.1501];

bool _findBGRA10Color(
Uint8List bytes, int width, int height, List<double> color) {
final ByteData byteData = ByteData.sublistView(bytes);
expect(bytes.lengthInBytes, width * height * 8);
expect(bytes.lengthInBytes, byteData.lengthInBytes);
Expand All @@ -33,16 +36,17 @@ bool _findDeepRedBGRA10(Uint8List bytes, int width, int height) {
final double blue = _decodeBGR10((pixel >> 6) & 0x3ff);
final double green = _decodeBGR10((pixel >> 22) & 0x3ff);
final double red = _decodeBGR10((pixel >> 38) & 0x3ff);
if (_isAlmost(red, 1.0931, 0.01) &&
_isAlmost(green, -0.2268, 0.01) &&
_isAlmost(blue, -0.1501, 0.01)) {
if (_isAlmost(red, color[0], 0.01) &&
_isAlmost(green, color[1], 0.01) &&
_isAlmost(blue, color[2], 0.01)) {
foundDeepRed = true;
}
}
return foundDeepRed;
}

bool _findDeepRedBGR10(Uint8List bytes, int width, int height) {
bool _findBGR10Color(
Uint8List bytes, int width, int height, List<double> color) {
final ByteData byteData = ByteData.sublistView(bytes);
expect(bytes.lengthInBytes, width * height * 4);
expect(bytes.lengthInBytes, byteData.lengthInBytes);
Expand All @@ -52,25 +56,25 @@ bool _findDeepRedBGR10(Uint8List bytes, int width, int height) {
final double blue = _decodeBGR10(pixel & 0x3ff);
final double green = _decodeBGR10((pixel >> 10) & 0x3ff);
final double red = _decodeBGR10((pixel >> 20) & 0x3ff);
if (_isAlmost(red, 1.0931, 0.01) &&
_isAlmost(green, -0.2268, 0.01) &&
_isAlmost(blue, -0.1501, 0.01)) {
if (_isAlmost(red, color[0], 0.01) &&
_isAlmost(green, color[1], 0.01) &&
_isAlmost(blue, color[2], 0.01)) {
foundDeepRed = true;
}
}
return foundDeepRed;
}

bool _findDeepRed(List<Object?> result) {
bool _findColor(List<Object?> result, List<double> color) {
expect(result, isNotNull);
expect(result.length, 4);
final int width = (result[0] as int?)!;
final int height = (result[1] as int?)!;
final String format = (result[2] as String?)!;
if (format == 'MTLPixelFormatBGR10_XR') {
return _findDeepRedBGR10((result[3] as Uint8List?)!, width, height);
return _findBGR10Color((result[3] as Uint8List?)!, width, height, color);
} else if (format == 'MTLPixelFormatBGRA10_XR') {
return _findDeepRedBGRA10((result[3] as Uint8List?)!, width, height);
return _findBGRA10Color((result[3] as Uint8List?)!, width, height, color);
} else {
fail('Unsupported pixel format: $format');
}
Expand All @@ -87,7 +91,7 @@ void main() {
const MethodChannel channel = MethodChannel('flutter/screenshot');
final List<Object?> result =
await channel.invokeMethod('test') as List<Object?>;
expect(_findDeepRed(result), isTrue);
expect(_findColor(result, _deepRed), isTrue);
});
testWidgets('look for display p3 deepest red', (WidgetTester tester) async {
app.run(app.Setup.canvasSaveLayer);
Expand All @@ -96,7 +100,27 @@ void main() {
const MethodChannel channel = MethodChannel('flutter/screenshot');
final List<Object?> result =
await channel.invokeMethod('test') as List<Object?>;
expect(_findDeepRed(result), isTrue);
expect(_findColor(result, _deepRed), isTrue);
});
testWidgets('no p3 deepest red without image', (WidgetTester tester) async {
app.run(app.Setup.none);
await tester.pumpAndSettle(const Duration(seconds: 2));

const MethodChannel channel = MethodChannel('flutter/screenshot');
final List<Object?> result =
await channel.invokeMethod('test') as List<Object?>;
expect(_findColor(result, _deepRed), isFalse);
expect(_findColor(result, <double>[0.0, 1.0, 0.0]), isFalse);
});
testWidgets('p3 deepest red with blur', (WidgetTester tester) async {
app.run(app.Setup.blur);
await tester.pumpAndSettle(const Duration(seconds: 2));

const MethodChannel channel = MethodChannel('flutter/screenshot');
final List<Object?> result =
await channel.invokeMethod('test') as List<Object?>;
expect(_findColor(result, _deepRed), isTrue);
expect(_findColor(result, <double>[0.0, 1.0, 0.0]), isTrue);
});
});
}
214 changes: 151 additions & 63 deletions dev/integration_tests/wide_gamut_test/lib/main.dart
View file
Original file line number Diff line number Diff line change
Expand Up @@ -8,67 +8,140 @@ import 'package:flutter/material.dart';

/// A 100x100 png in Display P3 colorspace.
const String _displayP3Logo =
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void main() => run(Setup.canvasSaveLayer);
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void main() => run(Setup.blur);

enum Setup {
none,
image,
canvasSaveLayer,
blur,
}

void run(Setup setup) {
Expand Down Expand Up @@ -104,18 +177,14 @@ class _SaveLayerDrawer extends CustomPainter {
center: Offset.zero,
width: _image!.width.toDouble(),
height: _image!.height.toDouble());
canvas.saveLayer(
imageRect,
Paint());
canvas.saveLayer(imageRect, Paint());
canvas.drawRect(
imageRect.inflate(-_image!.width.toDouble() / 4.0),
Paint()
..style = PaintingStyle.stroke
..color = const Color(0xffffffff)
..strokeWidth = 3);
canvas.saveLayer(
imageRect,
Paint()..blendMode = BlendMode.multiply);
canvas.saveLayer(imageRect, Paint()..blendMode = BlendMode.dstOver);
canvas.drawImage(_image!,
Offset(-_image!.width / 2.0, -_image!.height / 2.0), Paint());
canvas.restore();
Expand Down Expand Up @@ -165,12 +234,31 @@ class _MyHomePageState extends State<MyHomePage> {
Widget build(BuildContext context) {
late Widget imageWidget;
switch (widget.setup) {
case Setup.none:
imageWidget = Container();
break;
case Setup.image:
imageWidget = Image.memory(base64Decode(_displayP3Logo));
break;
case Setup.canvasSaveLayer:
imageWidget = CustomPaint(painter: _SaveLayerDrawer(_image));
break;
case Setup.blur:
imageWidget = Stack(
children: <Widget>[
const ColoredBox(
color: Color(0xff00ff00),
child: SizedBox(
width: 100,
height: 100,
),
),
ImageFiltered(
imageFilter: ui.ImageFilter.blur(sigmaX: 6, sigmaY: 6),
child: Image.memory(base64Decode(_displayP3Logo))),
],
);
break;
}

return Scaffold(
Expand Down

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