File: imageBitmapRendering-transferFromImageBitmap.html

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<!DOCTYPE html>
<link rel="match" href="imageBitmapRendering-transferFromImageBitmap-expected.html" />
<body>
  <p>Test whether the imageOrientation "from-image" works when creating an ImageBitmap from the ImageData of a canvas, and then transfered to an ImageBitmapRenderingContext.</p>
  <canvas id="canvas" width="300" height="300"></canvas>
</body>
<script>

function drawSquares(ctx) {
  ctx.fillStyle = 'red';
  ctx.fillRect(0,0,150,150);
  ctx.fillStyle = 'green';
  ctx.fillRect(150,0,300,150);
  ctx.fillStyle = 'blue';
  ctx.fillRect(0,150,150,300);
}

async function runTest() {
  const canvas_temp = document.createElement('canvas');
  canvas_temp.width = 300;
  canvas_temp.height = 300;
  const ctx_temp = canvas_temp.getContext('2d');
  drawSquares(ctx_temp);
  const imageSource = ctx_temp.getImageData(0, 0, 300, 300);
  const imageOrientation = 'from-image';
  imageIDFlipped =  await createImageBitmap(imageSource, 0, 0, 300, 300, { imageOrientation });
  const canvas = document.getElementById('canvas');
  const ctx = canvas.getContext('bitmaprenderer');
  ctx.transferFromImageBitmap(imageIDFlipped);
}

runTest();

</script>