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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /gfx/tests/reftest/1972885-ref.html
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/tests/reftest/1972885-ref.html')
-rw-r--r--gfx/tests/reftest/1972885-ref.html35
1 files changed, 35 insertions, 0 deletions
diff --git a/gfx/tests/reftest/1972885-ref.html b/gfx/tests/reftest/1972885-ref.html
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+++ b/gfx/tests/reftest/1972885-ref.html
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+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>Reference for Bug 1972885</title>
+<style>
+body {
+ margin: 0;
+}
+canvas {
+ /* Rounded up. */
+ margin-top: 2px;
+ width: 100px;
+ /* Subpixel snapped down. */
+ height: 100px;
+}
+</style>
+<canvas id="canvas"></canvas>
+<script>
+function draw(canvas, width, height) {
+ const ctx = canvas.getContext('2d');
+ canvas.width = width;
+ canvas.height = height;
+ const imgData = ctx.createImageData(width, height);
+ const u32View = new Uint32Array(imgData.data.buffer);
+ u32View.fill(0xFFFFFFFF);
+ for (let y = 0; y < height; y += 2) {
+ for (let x = 0; x < width; x++) {
+ u32View[y * width + x] = 0xFF000000;
+ }
+ }
+ ctx.putImageData(imgData, 0, 0);
+}
+
+draw(canvas, 100, 100);
+</script>