Pass the CTM as part of the local matrix passed by
SkRectShaderImageFilter. Teach SkPerlinNoiseShader to respect the local
matrix. Embiggen imagefiltersscaled GM size to accommodate the new test
cases.
Note: will require rebaselines of imagefiltersscaled and imagefiltersclipped
R=sugoi@chromium.org
BUG=skia:
Review URL: https://codereview.chromium.org/184973007
git-svn-id: http://skia.googlecode.com/svn/trunk@13637 2bbb7eff-a529-9590-31e7-b0007b416f81
SkResizeImageFilter resizes all the pixels from its input (subject to
the input's crop rect), but the offset to be applied was incorrect.
It should take the CTM into account, so that the origin of the resize is
the world space origin, unaffected by whatever clipping is applied.
New GM imageresizetiled exercises the behaviour under
impl-side-painting-like conditions, and existing GMs now have resize
cases added.
R=reed@google.com, robertphillips@google.com
Review URL: https://codereview.chromium.org/168283006
git-svn-id: http://skia.googlecode.com/svn/trunk@13506 2bbb7eff-a529-9590-31e7-b0007b416f81
Image filters in Skia currently clip the size of the the offscreen
bitmap used for filtering to the device clip bounds. This means that
any pixel-moving filter (e.g., blur) has edge artifacts at the clip
boundaries. This is problematic for tiling, where a single SkPicture
is played back with a clip set to the tile boundaries.
By implementing the onFilterBounds() traversal, and using it in
saveLayer() when a filter is present, we can clip the layer to the
expanded clip rect. Note that this requires that the traversal be
performed in reverse as compared to computeFastBounds(). (It's also
done in device space, unlike computeFastBounds()).
New test imagefiltersclipped tests pixel-moving filters when clipped
by various clip rects.
New test imageblurtiled tests tiled (compositor-style) rendering of
blurred text. There should be no artifacts at the tile boundaries.
BUG=337831
R=reed@google.com
Review URL: https://codereview.chromium.org/23011012
git-svn-id: http://skia.googlecode.com/svn/trunk@13323 2bbb7eff-a529-9590-31e7-b0007b416f81
