void DispatchRays()
{
// update frame index and start path tracer
_rayTracingShader.SetInt("_FrameIndex", _frameIndex);
_rayTracingShader.SetShaderPass("DxrPass"); //
// using e.g. ForwardDXR here will require binding all variables correctly, e.g. _EnvLightDatasRT
// _rayTracingShader.SetShaderPass("ForwardDXR");
// var lightCluster = HDRenderPipeline.currentPipeline.RequestLightCluster();
// Shader.SetGlobalBuffer(HDShaderIDs._RaytracingLightCluster, lightCluster.GetCluster());
// Shader.SetGlobalBuffer(HDShaderIDs._LightDatasRT, lightCluster.GetLightDatas());
// Shader.SetGlobalBuffer(HDShaderIDs._EnvLightDatasRT, lightCluster.GetEnvLightDatas());
_rayTracingShader.SetFloat("_JitterAmount", resultTexture == ResultTexture.DxrTarget ? 0 : 1);
_rayTracingShader.SetBool("_UseLensData", lensRenderer && lensRenderer.isActiveAndEnabled);
if (lensRenderer)
{
_rayTracingShader.SetMatrix("_DataProviderTransform", lensRenderer.transform.localToWorldMatrix);
_rayTracingShader.SetTexture("_PositionData", lensRenderer.lensPositionTex);
_rayTracingShader.SetTexture("_DirectionData", lensRenderer.lensDirectionTex);
}
else
{
_rayTracingShader.SetTexture("_PositionData", Texture2D.whiteTexture);
_rayTracingShader.SetTexture("_DirectionData", Texture2D.whiteTexture);
}
// start one thread for each pixel on screen
_rayTracingShader.Dispatch("MyRaygenShader", _dxrTarget.width, _dxrTarget.height, 1, _camera);
// update accumulation material
_accumulationMaterial.SetTexture("_CurrentFrame", _dxrTarget);
_accumulationMaterial.SetTexture("_Accumulation", _accumulationTarget1);
_accumulationMaterial.SetInt("_FrameIndex", _frameIndex++);
// accumulate current raytracing result
Graphics.Blit(_dxrTarget, _accumulationTarget2, _accumulationMaterial);
// switch accumulate textures
var temp = _accumulationTarget1;
_accumulationTarget1 = _accumulationTarget2;
_accumulationTarget2 = temp;
// // apply DLSS to the _dxrTarget
// var cmd = new CommandBuffer();
// var initData = new DLSSCommandInitializationData()
// {
// featureFlags = DLSSFeatureFlags.DoSharpening,
// inputRTHeight = (uint)_dxrTarget.height,
// inputRTWidth = (uint)_dxrTarget.width,
// outputRTWidth = (uint)(2 * _dxrTarget.width),
// outputRTHeight = (uint)(2 * _dxrTarget.height),
// quality = DLSSQuality.MaximumPerformance
// };
//
// var context = _nvidiaDevice.CreateFeature(cmd, initData);
// var textureTable = new DLSSTextureTable()
// {
// colorInput = _dxrTarget,
// colorOutput = null,
// depth = null,
// motionVectors = null,
// };
// _nvidiaDevice.ExecuteDLSS(cmd, context, new DLSSTextureTable());
GetComponent <MeshRenderer>().sharedMaterial.mainTexture = resultTexture == ResultTexture.DxrTarget ? _dxrTarget : _accumulationTarget1;
}
