Draw directly to SKSurface

[Tiko Tiko]

Assuming I am using the CPU renderer (NOT GPU), i.e the back buffer is in RAM, not GPU memory

Is it possible to get a reference to the buffer Skia is writing to so I can do my own rendering to it?

I'm not looking to get a copy and then write back, I want to draw directly to the memory itself for best performance? is this possible?

So basically, I want to do something like :

private void skiaView_PaintSurface(object sender, SKPaintSurfaceEventArgs e) { var canvas = e.Surface.Canvas; canvas.Clear(SKColors.White); // normal rendering canvas.DrawLine(....); fixed(byte buffer* = canvas.Surface.GetBuffer()) { // write to the actual buffer skia is using buffer[0] = ... } }

Thanks

[Tiko Tiko]

Forgot to mention that this is in C# (I am using SkiaSharp)

[Brian Osman]

In Skia native, this is generally done using SkSurface::peekPixels - that method fills in an SkPixmap object, which has the address of the buffer, as well as other information you'd need (like the pixel stride, format, etc). It looks like SkiaSharp does expose peekPixels, so you probably need to look at how that's exposed there.

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[Mike Reed]

Another sneaky way is to create the SkSurface with a buffer that you created/own... if that's possible.

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