Source code of anti-aliasing of QPainter (QImage)
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I am doing some anti-aliasing drawing jobs, I want to know how qpainter(or qimage) do anti-aliasing when fill the polygon?but I can't find the related source code part, can anyone tell me the position of related function ?
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Hi,
IIRC, what you are looking for is the QPaintEngine implementation. You might also want to check the new abstraction layer for Qt 6 called RHI.
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Hi,
IIRC, what you are looking for is the QPaintEngine implementation. You might also want to check the new abstraction layer for Qt 6 called RHI.
@SGaist Exactly and I can't find the QImage's implementation of QPaintEngine...I will try again.
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It's the other way around, QPaintEngine is used to draw. It does not have a backend using QImage.
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It's the other way around, QPaintEngine is used to draw. It does not have a backend using QImage.
@SGaist It seems that (QRasterizer)[https://code.woboq.org/qt5/qtbase/src/gui/painting/qrasterizer.cpp.htm] is what I want. I used to doubt that QImage didn't use CPU but GPU(opengl) to render, but it seems not that way.
