[Webkit-unassigned] [Bug 89709] New: Many canvas layout tests fail when deviceScaleFactor is not 1

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=89709

           Summary: Many canvas layout tests fail when deviceScaleFactor
                    is not 1
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: LayoutTestFailure
          Severity: Normal
          Priority: P2
         Component: Canvas
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bdakin at apple.com


If you run the layout tests on a Retina MacBook Pro (or any Mac simulating HiDPI mode), many canvas tests fail. There were many intentional changes made to canvas for a HiDPI environment, so these failures are not necessarily bugs, but they will probably have to be investigated individually to determine that.

At a high level, we need to decide if we want to have a new directory like the platform directory for test results that are specific to different deviceScaleFactors. Or perhaps tests can change to accommodate evaluating results for each platform. A directory would be a nice short-term solution. 

Anyway, these are all of the canvas tests that I see failing:

canvas/philip/tests/2d.imageData.get.order.cols.html
canvas/philip/tests/2d.imageData.get.order.rows.html
canvas/philip/tests/2d.imageData.put.unchanged.html
canvas/philip/tests/2d.text.draw.baseline.ideographic.html

fast/canvas/2d.backingStorePixelRatio.html
fast/canvas/canvas-alphaImageData-behavior.html
fast/canvas/canvas-copyPixels.html
fast/canvas/canvas-fillPath-shadow.html
fast/canvas/canvas-getImageData-negative-source.html
fast/canvas/canvas-lineWidth-intact-after-strokeRect.html
fast/canvas/canvas-scale-strokePath-shadow.html
fast/canvas/canvas-state-intact-after-putImageData.html
fast/canvas/canvas-strokePath-cap-join.html
fast/canvas/canvas-strokePath-gradient-shadow.html
fast/canvas/canvas-strokeRect-alpha-shadow.html
fast/canvas/canvas-strokeRect-gradient-shadow.html
fast/canvas/canvas-style-intact-after-text.html
fast/canvas/webgl/gl-pixelstorei.html
fast/canvas/webgl/tex-image-and-sub-image-2d-with-canvas-rgb565.html
fast/canvas/webgl/tex-image-and-sub-image-2d-with-canvas-rgba4444.html
fast/canvas/webgl/tex-image-and-sub-image-2d-with-canvas-rgba5551.html
fast/canvas/webgl/tex-image-and-sub-image-2d-with-canvas.html
fast/canvas/webgl/tex-image-and-sub-image-2d-with-image-rgb565.html
fast/canvas/webgl/tex-image-and-sub-image-2d-with-image-rgba4444.html
fast/canvas/webgl/tex-image-and-sub-image-2d-with-image-rgba5551.html
fast/canvas/webgl/tex-image-and-sub-image-2d-with-image.html

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