forked from mirrors/gecko-dev
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>
|
|
<meta charset="utf-8">
|
|
<title>Canvas's ImageBitmapRenderingContext test</title>
|
|
<script src="/resources/testharness.js"></script>
|
|
<script src="/resources/testharnessreport.js"></script>
|
|
<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#the-imagebitmap-rendering-context">
|
|
<script>
|
|
var width = 10;
|
|
var height = 10;
|
|
|
|
function testCanvas(bitmapCanvas, r, g, b, a)
|
|
{
|
|
var myCanvas = document.createElement('canvas');
|
|
myCanvas.width = width;
|
|
myCanvas.height = height;
|
|
var myCtx = myCanvas.getContext('2d');
|
|
myCtx.drawImage(bitmapCanvas, 0, 0);
|
|
var color = myCtx.getImageData(5, 5, 1, 1).data;
|
|
assert_array_equals(color, [r, g, b, a]);
|
|
}
|
|
|
|
promise_test(function() {
|
|
function testTransferFromImageBitmapNullability(greenImage) {
|
|
var bitmapCanvas = new OffscreenCanvas(width,height);
|
|
var bitmapCtx = bitmapCanvas.getContext('bitmaprenderer');
|
|
bitmapCtx.transferFromImageBitmap(greenImage);
|
|
|
|
// Make sure the bitmap renderer canvas is filled correctly.
|
|
var myCanvas = document.createElement('canvas');
|
|
var myCtx = myCanvas.getContext('bitmaprenderer');
|
|
myCtx.transferFromImageBitmap(bitmapCanvas.transferToImageBitmap());
|
|
testCanvas(myCanvas, 0, 255, 0, 255);
|
|
|
|
// Test that after transfering for second time to ImageBitmap produces
|
|
// a black bitmap of the same size
|
|
var myCanvas2 = document.createElement('canvas');
|
|
var myCtx2 = myCanvas2.getContext('bitmaprenderer');
|
|
myCtx2.transferFromImageBitmap(bitmapCanvas.transferToImageBitmap());
|
|
testCanvas(myCanvas2, 0, 0, 0, 0);
|
|
}
|
|
|
|
var greenCanvas = document.createElement('canvas');
|
|
greenCanvas.width = width;
|
|
greenCanvas.height = height;
|
|
var greenCtx = greenCanvas.getContext('2d');
|
|
greenCtx.fillStyle = '#0f0';
|
|
greenCtx.fillRect(0, 0, width, height);
|
|
|
|
return Promise.all([
|
|
createImageBitmap(greenCanvas),
|
|
]).then(([greenImage]) => {
|
|
testTransferFromImageBitmapNullability(greenImage);
|
|
});
|
|
},'Test that transferToImageBitmap works and that resets the imagebitmap to black');
|
|
|
|
</script>
|