diff options
Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.layers.componentTransfer.linear-expected.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.layers.componentTransfer.linear-expected.html | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.layers.componentTransfer.linear-expected.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.layers.componentTransfer.linear-expected.html new file mode 100644 index 0000000000..f922055ff2 --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.layers.componentTransfer.linear-expected.html @@ -0,0 +1,44 @@ +<!DOCTYPE html> +<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> +<title>Canvas test: 2d.filter.layers.componentTransfer.linear</title> +<h1>2d.filter.layers.componentTransfer.linear</h1> +<p class="desc">Test pixels on CanvasFilter() componentTransfer with linear type</p> +<canvas id="canvas" width="100" height="100"> + <p class="fallback">FAIL (fallback content)</p> +</canvas> +<script> + const canvas = document.getElementById("canvas"); + const ctx = canvas.getContext('2d'); + + // From https://www.w3.org/TR/SVG11/filters.html#feComponentTransferElement + function getColor(inputColor, slopes, intercepts) { + return [ + Math.max(0, Math.min(1, + inputColor[0]/255 * slopes[0] + intercepts[0])) * 255, + Math.max(0, Math.min(1, + inputColor[1]/255 * slopes[1] + intercepts[1])) * 255, + Math.max(0, Math.min(1, + inputColor[2]/255 * slopes[2] + intercepts[2])) * 255, + ]; + } + + const slopes = [0.5, 1.2, -0.2]; + const intercepts = [0.25, 0, 0.5]; + + const inputColors = [ + [255, 255, 255], + [0, 0, 0], + [127, 0, 34], + [252, 186, 3], + [50, 68, 87], + ]; + + for (let i = 0 ; i < inputColors.length ; ++i) { + const color = inputColors[i]; + let outputColor = getColor(color, slopes, intercepts); + ctx.fillStyle = `rgb(${outputColor[0]}, ${outputColor[1]}, + ${outputColor[2]})`; + ctx.fillRect(i * 10, i * 10, 10, 10); + } + ctx.endLayer(); +</script> |