public DensityVolumeEngineData ConvertToEngineData()
{
DensityVolumeEngineData data = new DensityVolumeEngineData();
data.extinction = VolumeRenderingUtils.ExtinctionFromMeanFreePath(meanFreePath);
data.scattering = VolumeRenderingUtils.ScatteringFromExtinctionAndAlbedo(data.extinction, (Vector3)(Vector4)albedo);
data.textureIndex = textureIndex;
data.textureScroll = volumeScrollingAmount;
data.textureTiling = textureTiling;
// Clamp to avoid NaNs.
Vector3 positiveFade = this.positiveFade;
Vector3 negativeFade = this.negativeFade;
data.rcpPosFade.x = Mathf.Min(1.0f / positiveFade.x, float.MaxValue);
data.rcpPosFade.y = Mathf.Min(1.0f / positiveFade.y, float.MaxValue);
data.rcpPosFade.z = Mathf.Min(1.0f / positiveFade.z, float.MaxValue);
data.rcpNegFade.y = Mathf.Min(1.0f / negativeFade.y, float.MaxValue);
data.rcpNegFade.x = Mathf.Min(1.0f / negativeFade.x, float.MaxValue);
data.rcpNegFade.z = Mathf.Min(1.0f / negativeFade.z, float.MaxValue);
data.invertFade = invertFade ? 1 : 0;
return(data);
}
// Override the volume blending function.
public override void Override(VolumeComponent state, float interpFactor)
{
VolumetricFog other = state as VolumetricFog;
float thisExtinction = VolumeRenderingUtils.ExtinctionFromMeanFreePath(meanFreePath);
Vector3 thisScattering = VolumeRenderingUtils.ScatteringFromExtinctionAndAlbedo(thisExtinction, (Vector3)(Vector4)albedo.value);
float otherExtinction = VolumeRenderingUtils.ExtinctionFromMeanFreePath(other.meanFreePath);
Vector3 otherScattering = VolumeRenderingUtils.ScatteringFromExtinctionAndAlbedo(otherExtinction, (Vector3)(Vector4)other.albedo.value);
float blendExtinction = Mathf.Lerp(otherExtinction, thisExtinction, interpFactor);
Vector3 blendScattering = Vector3.Lerp(otherScattering, thisScattering, interpFactor);
float blendAsymmetry = Mathf.Lerp(other.asymmetry, asymmetry, interpFactor);
float blendMeanFreePath = VolumeRenderingUtils.MeanFreePathFromExtinction(blendExtinction);
Color blendAlbedo = (Color)(Vector4)VolumeRenderingUtils.AlbedoFromMeanFreePathAndScattering(blendMeanFreePath, blendScattering);
blendAlbedo.a = 1.0f;
if (meanFreePath.overrideState)
{
other.meanFreePath.value = blendMeanFreePath;
}
if (albedo.overrideState)
{
other.albedo.value = blendAlbedo;
}
if (asymmetry.overrideState)
{
other.asymmetry.value = blendAsymmetry;
}
}
public DensityVolumeEngineData ConvertToEngineData()
{
DensityVolumeEngineData data = new DensityVolumeEngineData();
data.extinction = VolumeRenderingUtils.ExtinctionFromMeanFreePath(meanFreePath);
data.scattering = VolumeRenderingUtils.ScatteringFromExtinctionAndAlbedo(data.extinction, (Vector3)(Vector4)albedo);
data.textureIndex = textureIndex;
data.textureScroll = volumeScrollingAmount;
data.textureTiling = textureTiling;
// Note that we do not clamp here. Infinities work in the expected way in the shader.
// This also allows us to avoid artifacts caused by numerical issues.
data.rcpPosFade.x = 1.0f / positiveFade.x;
data.rcpPosFade.y = 1.0f / positiveFade.y;
data.rcpPosFade.z = 1.0f / positiveFade.z;
data.rcpNegFade.y = 1.0f / negativeFade.y;
data.rcpNegFade.x = 1.0f / negativeFade.x;
data.rcpNegFade.z = 1.0f / negativeFade.z;
data.invertFade = invertFade ? 1 : 0;
return(data);
}
public DensityVolumeData GetData()
{
DensityVolumeData data = new DensityVolumeData();
data.extinction = VolumeRenderingUtils.ExtinctionFromMeanFreePath(meanFreePath);
data.scattering = VolumeRenderingUtils.ScatteringFromExtinctionAndAlbedo(data.extinction, (Vector3)(Vector4)albedo);
return(data);
}
public DensityVolumeData GetData()
{
DensityVolumeData data = new DensityVolumeData();
data.extinction = VolumeRenderingUtils.ExtinctionFromMeanFreePath(meanFreePath);
data.scattering = VolumeRenderingUtils.ScatteringFromExtinctionAndAlbedo(data.extinction, (Vector3)(Vector4)albedo);
data.textureIndex = textureIndex;
data.textureScroll = volumeScrollingAmount;
data.textureTiling = textureTiling;
return(data);
}
public DensityVolumeEngineData GetData()
{
DensityVolumeEngineData data = new DensityVolumeEngineData();
data.extinction = VolumeRenderingUtils.ExtinctionFromMeanFreePath(meanFreePath);
data.scattering = VolumeRenderingUtils.ScatteringFromExtinctionAndAlbedo(data.extinction, (Vector3)(Vector4)albedo);
data.textureIndex = textureIndex;
data.textureScroll = volumeScrollingAmount;
data.textureTiling = textureTiling;
// Avoid numerical problems by clamping extreme values.
data.rcpPosFade.x = Mathf.Clamp(1.0f / positiveFade.x, 0.00001526f, 65536.0f);
data.rcpNegFade.x = Mathf.Clamp(1.0f / negativeFade.x, 0.00001526f, 65536.0f);
data.rcpPosFade.y = Mathf.Clamp(1.0f / positiveFade.y, 0.00001526f, 65536.0f);
data.rcpNegFade.y = Mathf.Clamp(1.0f / negativeFade.y, 0.00001526f, 65536.0f);
data.rcpPosFade.z = Mathf.Clamp(1.0f / positiveFade.z, 0.00001526f, 65536.0f);
data.rcpNegFade.z = Mathf.Clamp(1.0f / negativeFade.z, 0.00001526f, 65536.0f);
return(data);
}
