| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> |
| <meta charset="UTF-8"> |
| <html class="reftest-wait"> |
| <link rel="match" href="2d.layer.non-invertible-matrix.shadow-expected.html"> |
| <title>Canvas test: 2d.layer.non-invertible-matrix.shadow</title> |
| <h1>2d.layer.non-invertible-matrix.shadow</h1> |
| <p class="desc">Test drawing layers when the transform is not invertible.</p> |
| <canvas id="canvas" width="200" height="200"> |
| <p class="fallback">FAIL (fallback content)</p> |
| </canvas> |
| <script id='myWorker' type='text/worker'> |
| self.onmessage = function(e) { |
| const canvas = new OffscreenCanvas(200, 200); |
| const ctx = canvas.getContext('2d'); |
| |
| ctx.fillStyle = 'blue'; |
| ctx.fillRect(30, 30, 50, 50); |
| |
| // Anything below will be non-rasterizable. |
| ctx.scale(1, 0); |
| |
| ctx.shadowOffsetX = 0; |
| ctx.shadowOffsetY = 20; |
| ctx.shadowColor = 'rgba(255, 165, 0, 0.6)'; |
| |
| // Open the layer with a non-invertible matrix. The whole layer will be |
| // non-rasterizable. |
| ctx.beginLayer(); |
| |
| // Because the transform is global, the matrix is still non-invertible. |
| ctx.fillStyle = 'rgba(225, 0, 0, 1)'; |
| ctx.fillRect(40, 70, 50, 50); |
| |
| // Set a valid matrix in the middle of the layer. This makes the global |
| // matrix invertible again, but because because the layer was opened with a |
| // non-invertible matrix, the whole layer remains non-rasterizable. |
| ctx.setTransform(1, 0, 0, 1, 0, 0); |
| |
| ctx.fillStyle = 'green'; |
| ctx.fillRect(70, 40, 50, 50); |
| |
| ctx.endLayer(); |
| |
| const bitmap = canvas.transferToImageBitmap(); |
| self.postMessage(bitmap, bitmap); |
| }; |
| </script> |
| <script> |
| const blob = new Blob([document.getElementById('myWorker').textContent]); |
| const worker = new Worker(URL.createObjectURL(blob)); |
| worker.addEventListener('message', msg => { |
| const outputCtx = document.getElementById("canvas").getContext('2d'); |
| outputCtx.drawImage(msg.data, 0, 0); |
| document.documentElement.classList.remove("reftest-wait"); |
| }); |
| worker.postMessage(null); |
| </script> |
| </html> |
