GraphicsDevice

Description

Provides the main entry point for the AMD Module. Use this to interact with the FSR2 feature.

The GraphicsDevice includes an interface for creating and managing feature contexts, handling FSR2 command execution, and providing utility methods for quality mode resolution management.

GraphicsDevice is needed to implement FSR2 outside of the built-in integration to the HDRP Dynamic Resolution.

Before using GraphicsDevice, ensure the AMDUnityPlugin is loaded and the device is initialized via GraphicsDevice.CreateGraphicsDevice.

Additional resources: AMDUnityPlugin, FSR2Context, FSR2TextureTable, FSR2CommandInitializationData, FSR2CommandExecutionData

using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.HighDefinition;
using UnityEngine.AMD;

// Example HDRP custom pass 
public class CustomFSRPass : CustomPass
{
    public static bool EnsureAMDPluginLoaded()
    {
        if (!AMDUnityPlugin.IsLoaded())
        {
            Debug.Log("AMDUnityPlugin is not loaded!");
            if (!AMDUnityPlugin.Load())
            {
                Debug.LogError("Unable to load AMDUnityPlugin");
                return false;
            }
        }
        Debug.Log("AMDUnityPlugin is successfully loaded!");
        return true;
    }

    void InitializeAMDDevice()
    {
        if (!EnsureAMDPluginLoaded())
            return;

        // AMDUnityPlugin initialization will handle device creation for us.
        // In case the device is not created, we call the static method GraphicsDevice.CreateGraphicsDevice().
        amdDevice = GraphicsDevice.device == null ? GraphicsDevice.CreateGraphicsDevice() : GraphicsDevice.device;

        Debug.LogFormat("AMD.GraphicsDevice initialized w/ version {0}", GraphicsDevice.version);
    }

    protected override void Setup(ScriptableRenderContext renderContext, CommandBuffer cmd)
    {
        if (amdDevice == null)
        {
            InitializeAMDDevice();
        }
        
        float scalingRatio = fsr2Context == null ? 1.0f : amdDevice.GetUpscaleRatioFromQualityMode(m_Quality);
        fsr2OutputColorBuffer = RTHandles.Alloc(
            new Vector2(scalingRatio, scalingRatio),
            dimension: TextureDimension.Tex2D,
            colorFormat: GraphicsFormat.R16G16B16A16_SFloat,
            name: "fsr2OutputColorBuffer",
            enableRandomWrite: true
        );

        // other pass setup code
    }

    protected override void Execute(CustomPassContext ctx)
    {
        bool initializeFsr2Context = fsr2Context == null || HasInputResolutionChanged(ctx) || HasOutputResolutionChanged(ctx);
        if (initializeFsr2Context)
        {
            if (fsr2Context != null)
            {
                amdDevice.DestroyFeature(ctx.cmd, fsr2Context);
                fsr2Context = null;
            }

            FSR2CommandInitializationData initData = new FSR2CommandInitializationData();
            // populate initData
            fsr2Context = amdDevice.CreateFeature(ctx.cmd, initData);
        }

        fsr2Context.executeData.enableSharpening = m_EnableSharpening ? 1 : 0;
        // populate rest of fsr2Context.executeData 
        
        FSR2TextureTable fsr2TextureTable = new FSR2TextureTable()
        {
            // populate texture table
        };

        amdDevice.ExecuteFSR2(ctx.cmd, fsr2Context, fsr2TextureTable);
    }

    protected override void Cleanup()
    {
        // pass cleanup code

        // No explicit clean up is necessary for AMD.GraphicsDevice, all handled internally
    }

    private GraphicsDevice amdDevice = null;
    private FSR2Context fsr2Context = null;
    private RTHandle fsr2OutputColorBuffer;
    // other member variables
}

Static Properties

Public Methods

Static Methods