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19a6a6f431
This reverts commit adc8e159a5.
This should be safe to land once https://github.com/flutter/flutter/pull/28530 gets merged
Merge on yellow doc test because the doc test is actually green.
34 lines
1.1 KiB
Dart
34 lines
1.1 KiB
Dart
// Copyright 2019 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// This example shows the draw operations to warm up the GPU shaders by default.
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import 'dart:ui' as ui;
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import 'package:flutter/material.dart';
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import 'package:flutter/painting.dart' show DefaultShaderWarmUp;
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void beginFrame(Duration timeStamp) {
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// PAINT
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final ui.PictureRecorder recorder = ui.PictureRecorder();
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final ui.Rect paintBounds = ui.Rect.fromLTRB(0, 0, 1000, 1000);
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final ui.Canvas canvas = ui.Canvas(recorder, paintBounds);
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final ui.Paint backgroundPaint = ui.Paint()..color = Colors.white;
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canvas.drawRect(paintBounds, backgroundPaint);
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const DefaultShaderWarmUp().warmUpOnCanvas(canvas);
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final ui.Picture picture = recorder.endRecording();
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// COMPOSITE
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final ui.SceneBuilder sceneBuilder = ui.SceneBuilder()
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..pushClipRect(paintBounds)
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..addPicture(ui.Offset.zero, picture)
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..pop();
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ui.window.render(sceneBuilder.build());
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}
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void main() {
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ui.window.onBeginFrame = beginFrame;
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ui.window.scheduleFrame();
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}
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