| Parameter | Description |
|---|---|
| context | Device context for computation and memory operations. |
| positionOffset | Starting index in the probe position buffer. |
| positionCount | Number of probe positions to process. |
| sampleCount | Number of directional samples to take per probe. |
| validityEstimateOut | Output buffer for validity values (one float per probe). |
Result Result indicating success or failure with detailed error information.
Computes validity factors indicating the reliability of each probe position.
This method evaluates how reliable each probe position is for lighting interpolation by analyzing the geometric environment around the probe.
The validity calculation:
Validity is determined by whether rays hit front-facing vs back-facing surfaces.
Invalid probes (low validity) should be excluded from lighting calculations or given reduced influence during interpolation.
// Compute validity for all probes BufferID validityBuffer = context.CreateBuffer(probeCount, sizeof(float)); var validitySlice = new BufferSlice<float>(validityBuffer, 0);
var result = integrator.IntegrateValidity(context, 0, probeCount, 1024, validitySlice);
if (result.type == IProbeIntegrator.ResultType.Success) { // Read back validity values var validityData = new NativeArray<float>(probeCount, Allocator.Temp); context.ReadBuffer(validitySlice, validityData); context.Flush();
// Identify invalid probes for (int i = 0; i < probeCount; i++) { if (validityData[i] < 0.5f) { Debug.LogWarning($"Probe {i} has low validity: {validityData[i]}"); } } }