using UnityEngine;
using UnityEngine.Rendering.Universal;

namespace SicknessReduction.Visual.Rendering
{
    public class BokehFeature : ScriptableRendererFeature
    {
        [System.Serializable]
        public class BokehFeatureSettings
        {
            // we're free to put whatever we want here, public fields will be exposed in the inspector
            public bool IsEnabled = true;
            public RenderPassEvent WhenToInsert = RenderPassEvent.AfterRendering;
            public float maxCoc;
            public float focusDistance;
            public Material fragMaterial;
        }

        // MUST be named "settings" (lowercase) to be shown in the Render Features inspector
        public BokehFeatureSettings settings = new BokehFeatureSettings();

        RenderTargetHandle renderTextureHandle;
        BokehRenderPass myRenderPass;

        public override void Create()
        {
            myRenderPass = new BokehRenderPass(
                "Bokeh Render Pass",
                settings
            );
        }

        // called every frame once per camera
        public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
        {
            if (!settings.IsEnabled)
            {
                // we can do nothing this frame if we want
                return;
            }

            // Gather up and pass any extra information our pass will need.
            // In this case we're getting the camera's color buffer target
            var cameraColorTargetIdent = renderer.cameraColorTarget;
            myRenderPass.Setup(renderingData.cameraData.cameraTargetDescriptor, cameraColorTargetIdent);

            // Ask the renderer to add our pass.
            // Could queue up multiple passes and/or pick passes to use
            renderer.EnqueuePass(myRenderPass);
        }
    }
}