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ForwardLocalLightBuffer in LightGridCommon


I need your help in the file LightGridCommon.ush

I'm trying to customize the light component by adding some stuff in it and in the forward rendering, i need to change thos file. I need to add my custom new line in this :

 FLocalLightData GetLocalLightData(uint GridIndex, uint EyeIndex)
 FLocalLightData Result;
 if (EyeIndex == 0)
 uint LocalLightIndex = CulledLightDataGrid[GridIndex];
 uint LocalLightBaseIndex = LocalLightIndex * LOCAL_LIGHT_DATA_STRIDE;
 Result.LightPositionAndInvRadius = asfloat(ForwardLocalLightBuffer[LocalLightBaseIndex + 0]);
 Result.LightColorAndFalloffExponent = asfloat(ForwardLocalLightBuffer[LocalLightBaseIndex + 1]);
 Result.LightDirection = asfloat(ForwardLocalLightBuffer[LocalLightBaseIndex + 2].xyz);
 Result.ShadowMask = ForwardLocalLightBuffer[LocalLightBaseIndex + 2].w;
 Result.SpotAngles = asfloat(ForwardLocalLightBuffer[LocalLightBaseIndex + 3].xyz);
 Result.SourceRadiusPacked = ForwardLocalLightBuffer[LocalLightBaseIndex + 3].w;
 Result.LightTangentAndSoftSourceRadius = asfloat(ForwardLocalLightBuffer[LocalLightBaseIndex + 4]);
 return Result;

Where asfloat(ForwardLocalLightBuffer[LocalLightBaseIndex + 0]); get the value in the .cpp or .h ? I found it in the BasePassRendering.h but i can't find anything with the Index +0 or Index +1 ...

The Idea here is adding a boolean in the result to play with it in the light system

Thank you

Product Version: UE 4.18
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asked Mar 15 '18 at 02:34 PM in C++ Programming

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Hello, I bump this question because i really need your help guys. Thank you.

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answered Mar 28 '18 at 09:12 AM

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