using Unity.Toonshader;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.HighDefinition;

public class UTSOutlinePass : DrawRenderersCustomPass
{
    protected override void Execute(CustomPassContext ctx)
    {
        UTSRenderer utsRenderer = ctx.hdCamera.volumeStack.GetComponent<UTSRenderer>();
        if (utsRenderer == null)
            return;

        if (!utsRenderer.enableOutline.value || !utsRenderer.enable.value)
            return;

        Shader.SetGlobalFloat("_Outline_MaxWidth", utsRenderer.outlineMaxWidth.value * 0.01f);

        ShaderTagId outlineTag = new ShaderTagId("Outline");

        RenderStateMask mask = RenderStateMask.Nothing;
        RenderStateBlock stateBlock = new RenderStateBlock(mask)
        {
            depthState = new DepthState(depthWrite, depthCompareFunction),
            // We disable the stencil when the depth is overwritten but we don't write to it, to prevent writing to the stencil.
            stencilState = new StencilState(false),
        };

        PerObjectData renderConfig = ctx.hdCamera.frameSettings.IsEnabled(FrameSettingsField.Shadowmask) ? HDUtils.GetRendererConfiguration(true, false) : HDUtils.GetRendererConfiguration(false, true);

        UnityEngine.Rendering.RendererUtils.RendererListDesc result = new UnityEngine.Rendering.RendererUtils.RendererListDesc(outlineTag, ctx.cullingResults, ctx.hdCamera.camera)
        {
            rendererConfiguration = renderConfig,
            renderQueueRange = GetRenderQueueRange(renderQueueType),
            sortingCriteria = sortingCriteria,
            excludeObjectMotionVectors = true,
            overrideMaterial = overrideMaterial,
            overrideMaterialPassIndex = (overrideMaterial != null) ? overrideMaterial.FindPass(overrideMaterialPassName) : 0,
            stateBlock = stateBlock,
            layerMask = layerMask,
        };

        ScriptableRenderContext renderCtx = ctx.renderContext;
        CoreUtils.DrawRendererList(renderCtx, ctx.cmd, renderCtx.CreateRendererList(result));
    }
}