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Add smoother DDGi probe relocation when old position is visible from new position

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Wojtek Figat
2024-06-18 15:05:21 +02:00
parent 7f2464684a
commit 0d48ac8fc2
1 changed files with 14 additions and 0 deletions
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14
Source/Shaders/GI/DDGI.shader
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@@ -228,6 +228,20 @@ void CS_Classify(uint3 DispatchThreadId : SV_DispatchThreadID)
// If probe was in a different location or was activated now then mark it as activated
bool wasActivated = probeStateOld == DDGI_PROBE_STATE_INACTIVE;
bool wasRelocated = distance(probeOffset, probeOffsetOld) > 2.0f;
#if DDGI_PROBE_RELOCATE_FIND_BEST || DDGI_PROBE_RELOCATE_ITERATIVE
if (wasRelocated && !wasActivated)
{
// If probe was relocated but the previous location is visible from the new one, then don't re-activate it for smoother blend
float3 diff = probeOffsetOld - probeOffset;
float diffLen = length(diff);
float3 diffDir = diff / diffLen;
GlobalSDFTrace trace;
trace.Init(probeBasePosition + probeOffset, diffDir, 0.0f, diffLen);
GlobalSDFHit hit = RayTraceGlobalSDF(GlobalSDF, GlobalSDFTex, GlobalSDFMip, trace);
if (!hit.IsHit())
wasRelocated = false;
}
#endif
if ((wasActivated || wasScrolled || wasRelocated) && probeState == DDGI_PROBE_STATE_ACTIVE)
probeState = DDGI_PROBE_STATE_ACTIVATED;
}