If I create a render target like this and try drawing to it, it’s still all black (if I use GetData with an Rgba1010102 array all the components are 0). If I try to use SetData and then GetData the result is the same.
renderTarget = new RenderTarget2D(GraphicsDevice, GraphicsDevice.Viewport.Width, GraphicsDevice.Viewport.Height, false, SurfaceFormat.Rgba1010102, DepthFormat.None, 0, RenderTargetUsage.PreserveContents);
Platform: Windows 10 cross-platform desktop project
MonoGame version: 3.7.0.1708
Graphics card: ASUS GeForce GTX 1060 6GB Dual OC