using Sandbox.Rendering;

namespace Sandbox;

[Title( "Tilt Shift" )]
[Category( "Post Processing" )]
[Icon( "blur_on" )]
public sealed class TiltShiftEffect : BasePostProcess<TiltShiftEffect>
{
	[Property] public float BlurStrength { get; set; } = 2.0f;
	[Property] public float FocusCenterY { get; set; } = 0.5f;
	[Property] public float FocusRange { get; set; } = 0.2f;

	CommandList command = new CommandList();

	public override void Render()
	{
		command.Reset();

		command.Attributes.GrabFrameTexture( "ColorBuffer", true );

		command.Attributes.Set( "blur_strength", BlurStrength );
		command.Attributes.Set( "focus_center_y", FocusCenterY );
		command.Attributes.Set( "focus_range", FocusRange );
		command.Attributes.Set( "screen_width", Screen.Width );
		command.Attributes.Set( "screen_height", Screen.Height );

		command.Blit( Material.FromShader( "shaders/tilt_shift.shader" ) );

		InsertCommandList( command, Stage.AfterTransparent, 1000, "TiltShift" );
	}
}