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5bf54db34c
Automatic update from web-platform-tests Fixing bug with segfaulting TransferFromImageBitmap(null) There was an issue with OffscreenCanvas created from transferring control from a onscreen canvas, and using a BitmapRenderer context with the TransferFromImageBitmap(null). According to the standard TransferFromImageBitmap(null) has to reset the internal bitmap and create a black transparent one. https://html.spec.whatwg.org/multipage/canvas.html#the-imagebitmaprenderingcontext-interface This CL also adds new tests, and fixes some issues with naming in the tests. This CL also moves a method that should have been protected and not public in the first place. Bug: 1188892 Change-Id: I79f5487c99618fa0bbaf8c436b710766f82ce657 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2785425 Reviewed-by: Juanmi Huertas <juanmihd@chromium.org> Reviewed-by: Yi Xu <yiyix@chromium.org> Commit-Queue: Juanmi Huertas <juanmihd@chromium.org> Auto-Submit: Juanmi Huertas <juanmihd@chromium.org> Cr-Commit-Position: refs/heads/master@{#867359} -- wpt-commits: 5dacd60bbfdee3de26860d40ac14c4db74ebb48b wpt-pr: 28244
56 lines
2.1 KiB
HTML
56 lines
2.1 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>Canvas's ImageBitmapRenderingContext test</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#the-imagebitmap-rendering-context">
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<script>
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var width = 10;
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var height = 10;
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function testCanvas(bitmapCanvas, r, g, b, a)
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{
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var myCanvas = document.createElement('canvas');
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myCanvas.width = width;
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myCanvas.height = height;
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var myCtx = myCanvas.getContext('2d');
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myCtx.drawImage(bitmapCanvas, 0, 0);
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var color = myCtx.getImageData(5, 5, 1, 1).data;
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assert_array_equals(color, [r, g, b, a]);
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}
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promise_test(function() {
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function testTransferFromImageBitmapNullability(greenImage) {
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var bitmapCanvas = new OffscreenCanvas(width,height);
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var bitmapCtx = bitmapCanvas.getContext('bitmaprenderer');
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bitmapCtx.transferFromImageBitmap(greenImage);
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// Make sure the bitmap renderer canvas is filled correctly.
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var myCanvas = document.createElement('canvas');
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var myCtx = myCanvas.getContext('bitmaprenderer');
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myCtx.transferFromImageBitmap(bitmapCanvas.transferToImageBitmap());
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testCanvas(myCanvas, 0, 255, 0, 255);
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// Test that after transfering for second time to ImageBitmap produces
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// a black bitmap of the same size
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var myCanvas2 = document.createElement('canvas');
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var myCtx2 = myCanvas2.getContext('bitmaprenderer');
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myCtx2.transferFromImageBitmap(bitmapCanvas.transferToImageBitmap());
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testCanvas(myCanvas2, 0, 0, 0, 0);
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}
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var greenCanvas = document.createElement('canvas');
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greenCanvas.width = width;
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greenCanvas.height = height;
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var greenCtx = greenCanvas.getContext('2d');
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greenCtx.fillStyle = '#0f0';
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greenCtx.fillRect(0, 0, width, height);
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return Promise.all([
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createImageBitmap(greenCanvas),
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]).then(([greenImage]) => {
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testTransferFromImageBitmapNullability(greenImage);
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});
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},'Test that transferToImageBitmap works and that resets the imagebitmap to black');
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</script>
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