public void OnDrawFrame()

in source/SkiaSharp.Views/SkiaSharp.Views/Platform/Android/SKGLSurfaceViewRenderer.cs [32:87]
39 lines of code
7 McCabe index (conditional complexity)

		public void OnDrawFrame(IGL10 gl)
		{
			GLES20.GlClear(GLES20.GlColorBufferBit | GLES20.GlDepthBufferBit | GLES20.GlStencilBufferBit);

			// create the contexts if not done already
			if (context == null)
			{
				var glInterface = GRGlInterface.Create();
				context = GRContext.CreateGl(glInterface);
			}

			// manage the drawing surface
			if (renderTarget == null || lastSize != newSize || !renderTarget.IsValid)
			{
				// create or update the dimensions
				lastSize = newSize;

				// read the info from the buffer
				var buffer = new int[3];
				GLES20.GlGetIntegerv(GLES20.GlFramebufferBinding, buffer, 0);
				GLES20.GlGetIntegerv(GLES20.GlStencilBits, buffer, 1);
				GLES20.GlGetIntegerv(GLES20.GlSamples, buffer, 2);
				var samples = buffer[2];
				var maxSamples = context.GetMaxSurfaceSampleCount(colorType);
				if (samples > maxSamples)
					samples = maxSamples;
				glInfo = new GRGlFramebufferInfo((uint)buffer[0], colorType.ToGlSizedFormat());

				// destroy the old surface
				surface?.Dispose();
				surface = null;
				canvas = null;

				// re-create the render target
				renderTarget?.Dispose();
				renderTarget = new GRBackendRenderTarget(newSize.Width, newSize.Height, samples, buffer[1], glInfo);
			}

			// create the surface
			if (surface == null)
			{
				surface = SKSurface.Create(context, renderTarget, surfaceOrigin, colorType);
				canvas = surface.Canvas;
			}

			using (new SKAutoCanvasRestore(canvas, true))
			{
				// start drawing
				var e = new SKPaintGLSurfaceEventArgs(surface, renderTarget, surfaceOrigin, colorType);
				OnPaintSurface(e);
			}

			// flush the SkiaSharp contents to GL
			canvas.Flush();
			context.Flush();
		}