RFR: 8234471: Canvas in webview displayed with wrong scale on Windows

[Guru Hb]

On Mon, 9 Dec 2019 13:09:04 GMT, Arun Joseph <ajoseph at openjdk.org> wrote:

> This bug can be reproduced when the screen resolution is at 125%, 150% and 175% for Windows, which correpsonds to `pixelScale` values of 1.25, 1.5 and 1.75, respectively.
> 
> Issue: The rectangle inside canvas is rendered on `pixelScale` while the borders are rendered on `Math.ceil(pixelScale)`
> 
> Fix: Use `Math.ceil(pixelScale)` for calculating `pixelScaleTransform`

have you tested this on Linux and Mac by changing JVM option -Dglass.win.uiScale=<Scale value>.

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PR: https://git.openjdk.java.net/jfx/pull/62