on delphi/android how to draw a TbitmapSurface on a Canvas?

Question

Under delphi (and under firemonkey/android), What is the most fastest way to draw on a Tcanvas a TbitmapSurface ?

I try to use TTexture like MyTexture.Assign(aBitmapSur

Answer 1

TBitmapSurface is in system memory so you need to assign your TBitmapSurface to a TBitmap first, to be converted to native OS bitmap (or texture) format that FMX uses for drawing:

bmp.Assign(surf);

Then draw the Bitmap to the canvas:

canvas.BeginScene();
canvas.DrawBitmap(bmp, SrcRect, DstRect, AOpacity);
canvas.EndScene();

I have tested it on Windows and Android. On android you need to call the Repaint too see the change.