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Diffstat (limited to 'testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-canvas.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-canvas.html | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-canvas.html b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-canvas.html new file mode 100644 index 0000000000..2b9fb9b8f4 --- /dev/null +++ b/testing/web-platform/tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-canvas.html @@ -0,0 +1,44 @@ +<!DOCTYPE HTML> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="canvas-display-p3.js"></script> +<script> +// Test that patterns created from canvas sources with different color spaces +// can be drawn into sRGB and Display P3 canvases, by reading pixels with +// getImageData() as sRGB and Display P3 values. +function runTest(sourceColorSpace, destinationColorSpace, colors) { + for (let [sourceColorString, expectedColor] of Object.entries(colors)) { + test(function() { + let source = document.createElement("canvas"); + source.width = 2; + source.height = 2; + + let sourceContext = source.getContext("2d", { colorSpace: sourceColorSpace }); + + let sourceColor = sourceColorString.split(",").map(x => +x); + + let sourceImageData = new ImageData(2, 2, { colorSpace: sourceColorSpace }); + for (let i = 0; i < 2 * 2 * 4; i += 4) { + for (let c = 0; c < 4; ++c) + sourceImageData.data[i + c] = sourceColor[c]; + } + sourceContext.putImageData(sourceImageData, 0, 0); + + let destination = document.createElement("canvas"); + destination.width = 4; + destination.height = 4; + + let destinationContext = destination.getContext("2d", { colorSpace: destinationColorSpace }); + destinationContext.fillStyle = destinationContext.createPattern(source, "repeat"); + destinationContext.fillRect(0, 0, 4, 4); + + let destinationImageData = destinationContext.getImageData(2, 2, 1, 1); + + assert_true(pixelsApproximatelyEqual(destinationImageData.data, expectedColor), `Actual pixel value ${[...destinationImageData.data]} is approximately equal to ${expectedColor}.`); + }, `Source ${sourceColorSpace}, destination ${destinationColorSpace}, color ${sourceColorString}`); + } +} + +runTest("srgb", "display-p3", fromSRGBToDisplayP3); +runTest("display-p3", "srgb", fromDisplayP3ToSRGB); +</script> |