makeImageSnapshot after saveLayer

[yufei wen]

Thank you for taking the time to pay attention to this issue.

SkSurface::makeImageSnapshot can create a snapshot of a layer. SkCanvas::saveLayer  creates a new layer for rendering. As shown in the link makeImageSnapshot after saveLayer, makeImageSnapshot get the content of the original layer after saveLayer. 

What should I do if I want to get the content of the current layer after saveLayer?

[Brian Salomon]

We don't really have a good way to do that at present. Instead of making a new layer with saveLayer() you could make a new surface with SkCanvas::makeSurface() and then once you draw to that surface call makeImageSnapshot() on the second surface. The main disadvantage is that you lose automatic bounds computation for the second surface based on the starting canvas's clip state and the second surface doesn't inherit the matrix state from the original surface.

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Brian Salomon |

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