Unity 6 Scriptable Render Pipeline using RenderGraph

Unity Engine
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1

I’m trying to implement an outline shader. I have the full-screen, post-process shader completely working, but I’m trying to implement a ScriptableRenderFeature. This code has changed so many times, I can’t keep up with it.

Anyway, the issue is my ExecutePass function which doesn’t have a “DrawRenderers” method, nor does it have “cullingResults” - which is the older way to do things. But I don’t know how to replace it.

private static void ExecutePass(PassData data, RasterGraphContext context)
{
    var cmd = context.cmd;

    // Set the layer mask and material
    DrawingSettings drawingSettings = new DrawingSettings(new ShaderTagId("UniversalForward"), new SortingSettings())
    {
        overrideMaterial = data.material
    };
    FilteringSettings filteringSettings = new FilteringSettings(RenderQueueRange.all, data.layerMask);

    context.cmd.DrawRenderers(context.cullingResults, ref drawingSettings, ref filteringSettings);

    // Blit to the output texture if necessary (e.g., if using a material)
    if (data.material != null)
    {
        Blitter.BlitTexture(cmd, data.copySourceTexture, new Vector4(1, 1, 0, 0), 0, false);
    }
}

public override void RecordRenderGraph(RenderGraph renderGraph, ContextContainer frameData)
{
    string passName = "Outlines";

    // First Pass: Render objects with the first LayerMask.
    using (IRasterRenderGraphBuilder builder = renderGraph.AddRasterRenderPass<PassData>(passName + "_FirstPass", out PassData firstPassData))
    {
        UniversalResourceData resourceData = frameData.Get<UniversalResourceData>();

        firstPassData.copySourceTexture = resourceData.activeColorTexture;
        firstPassData.layerMask = settings.FirstPassLayerMask;
        firstPassData.material = null; // Use default materials for the first pass.

        builder.UseTexture(firstPassData.copySourceTexture);

        builder.SetRenderFunc((PassData data, RasterGraphContext context) => ExecutePass(data, context));
    }

    // Second Pass: Render objects with the second LayerMask and OutlineMaterial.
    using (IRasterRenderGraphBuilder builder = renderGraph.AddRasterRenderPass<PassData>(passName + "_SecondPass", out PassData secondPassData))
    {
        UniversalResourceData resourceData = frameData.Get<UniversalResourceData>();

        secondPassData.copySourceTexture = resourceData.activeColorTexture;
        secondPassData.layerMask = settings.SecondPassLayerMask;
        secondPassData.material = settings.OutlineMaterial; // Use the outline material for the second pass.

        builder.UseTexture(secondPassData.copySourceTexture);

        builder.SetRenderFunc((PassData data, RasterGraphContext context) => ExecutePass(data, context));
    }
}
2

Hello, did you manage to figure out how to do this in RenderGraph? There are so few working examples out there. I can only get a full screen shader to work, but not one that selectively applies effects to certain objects/layers.

3

Hi,
From my experience, you can use context.cmd.DrawRendererList() API in your ExecutePass function, this is similar to DrawRenderers

4

The RenderGraph package samples show some concrete code examples. You can find an overview of the learning materials here.