Bug 106689 – [Chromium] Canvas philip tests failing after Skia flags enabled

• Status: RESOLVED
• Resolution: WONTFIX
• Component: Canvas

[Stephen Chenney]

After the flags 'SK_DISABLE_DITHER_32BIT_GRADIENT', 'SK_IGNORE_QUAD_STROKE_FIX',  'SK_DISABLE_DASHING_OPTIMIZATION', 'SK_IGNORE_FAST_SCALEMATRIX_INVERT',   'SK_IGNORE_TRANS_CLAMP_FIX' and 'SK_SUPPORT_INT_SRCRECT_DRAWBITMAPRECT' were removed from webkit, the following tests started failing:

canvas/philip/tests/2d.gradient.interpolate.overlap2.html [ Failure ]
canvas/philip/tests/2d.gradient.linear.transform.1.html [ Failure ]
canvas/philip/tests/2d.gradient.linear.transform.2.html [ Failure ]
canvas/philip/tests/2d.gradient.linear.transform.3.html [ Failure ]
canvas/philip/tests/2d.gradient.radial.transform.1.html [ Failure ]
canvas/philip/tests/2d.gradient.radial.transform.2.html [ Failure ]
canvas/philip/tests/2d.gradient.radial.transform.3.html [ Failure ]

All are failing with some variant of this:

Failed assertion: got pixel [1,255,1,255] at (50,25), expected [0,255,0,255]

Clearly the gradient code no longer matches what is expected. Either the test needs to be changed (hard, as it's cross-platform) or the gradient behavior needs to be fixed (which is really really annoying because a whole bunch of tests will need to be rebaselined again).

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=canvas%2Fphilip%2Ftests%2F2d.gradient.interpolate.overlap2.html%20canvas%2Fphilip%2Ftests%2F2d.gradient.linear.transform.1.html%20canvas%2Fphilip%2Ftests%2F2d.gradient.linear.transform.2.html%20canvas%2Fphilip%2Ftests%2F2d.gradient.linear.transform.3.html%20canvas%2Fphilip%2Ftests%2F2d.gradient.radial.transform.1.html%20canvas%2Fphilip%2Ftests%2F2d.gradient.radial.transform.2.html%20canvas%2Fphilip%2Ftests%2F2d.gradient.radial.transform.3.html%20