public BoxOverlayShader()
{
vertex = new DirectX.Shader(DirectX.Shader.Type.Vertex, GetVertexSource(), "BoxOverlayVertex", out var bytecode);
pixel = new DirectX.Shader(DirectX.Shader.Type.Pixel, GetPixelSource(), "BoxOverlayPixel");
var dev = Device.Get();
input = new InputLayout(dev.Handle, bytecode, new InputElement[]
{
new InputElement("POSITION", 0, Format.R32G32_Float, 0)
});
}