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Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative-expected.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative-expected.html | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative-expected.html b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative-expected.html new file mode 100644 index 0000000000..2b1c1c1c07 --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.componentTransfer.discrete.tentative-expected.html @@ -0,0 +1,50 @@ +<!DOCTYPE html> +<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> +<title>Canvas test: 2d.filter.canvasFilterObject.componentTransfer.discrete.tentative</title> +<h1>2d.filter.canvasFilterObject.componentTransfer.discrete.tentative</h1> +<p class="desc">Test pixels on CanvasFilter() componentTransfer with discrete 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 getTransformedValue(C, V) { + // Get the right interval + const n = V.length; + const k = C == 1 ? n - 1 : Math.floor(C * n); + return V[k]; + } + + function getColor(inputColor, tableValues) { + const result = [0, 0, 0]; + for (const i in inputColor) { + const C = inputColor[i]/255; + const Cprime = getTransformedValue(C, tableValues[i]); + result[i] = Math.max(0, Math.min(1, Cprime)) * 255; + } + return result; + } + + tableValuesR = [0, 0, 1, 1]; + tableValuesG = [2, 0, 0.5, 3]; + tableValuesB = [1, -1, 5, 0]; + + 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, [tableValuesR, tableValuesG, tableValuesB]); + ctx.fillStyle = `rgb(${outputColor[0]}, ${outputColor[1]}, + ${outputColor[2]})`; + ctx.fillRect(i * 10, i * 10, 10, 10); + } +</script> |