private void SetNoiseSource()
{
ToggleShaderKeyword(CalculateFogMaterial, "SNOISE", false);
ToggleShaderKeyword(CalculateFogMaterial, "NOISE2D", false);
ToggleShaderKeyword(CalculateFogMaterial, "NOISE3D", false);
switch (_NoiseSource)
{
case NoiseSource.SimplexNoise:
ToggleShaderKeyword(CalculateFogMaterial, "SNOISE", true);
break;
case NoiseSource.Texture2D:
CalculateFogMaterial.SetTexture("_NoiseTexture", _FogTexture2D);
ToggleShaderKeyword(CalculateFogMaterial, "NOISE2D", true);
break;
case NoiseSource.Texture3D:
CalculateFogMaterial.SetTexture("_NoiseTex3D", _fogTexture3D);
ToggleShaderKeyword(CalculateFogMaterial, "NOISE3D", true);
break;
case NoiseSource.SimplexNoiseCompute:
CalculateFogMaterial.SetTexture("_NoiseTex3D", _fogTexture3DSimplex);
ToggleShaderKeyword(CalculateFogMaterial, "NOISE3D", true);
break;
case NoiseSource.Texture3DCompute:
CalculateFogMaterial.SetTexture("_NoiseTex3D", _fogTexture3DCompute);
ToggleShaderKeyword(CalculateFogMaterial, "NOISE3D", true);
break;
}
}
private void RenderFog(RenderTexture fogRenderTexture, RenderTexture source)
{
if (fogOptions.useRayleighScattering)
{
CalculateFogMaterial.EnableKeyword("RAYLEIGH_SCATTERING");
CalculateFogMaterial.SetFloat(RayleighScatteringCoef, fogOptions.rayleighScatteringCoef);
}
else
{
CalculateFogMaterial.DisableKeyword("RAYLEIGH_SCATTERING");
}
ToggleShaderKeyword(CalculateFogMaterial, "LIMITFOGSIZE", fogOptions.limitFogInSize);
ToggleShaderKeyword(CalculateFogMaterial, "HEIGHTFOG", fogOptions.heightFogEnabled);
var performanceRatio = CalculateRaymarchStepRatio();
CalculateFogMaterial.SetFloat(RaymarchSteps, fogOptions.rayMarchSteps * Mathf.Pow(performanceRatio, 2));
CalculateFogMaterial.SetFloat(FogDensity, fogOptions.fogDensityCoef);
CalculateFogMaterial.SetFloat(NoiseScale, fogOptions.noiseScale);
CalculateFogMaterial.SetFloat(ExtinctionCoef, fogOptions.extinctionCoef);
CalculateFogMaterial.SetFloat(Anisotropy, fogOptions.anisotropy);
CalculateFogMaterial.SetFloat(BaseHeightDensity, fogOptions.baseHeightDensity);
CalculateFogMaterial.SetFloat(HeightDensityCoef, fogOptions.heightDensityCoef);
CalculateFogMaterial.SetVector(FogWorldPosition, fogOptions.fogWorldPosition);
CalculateFogMaterial.SetFloat(FogSize, fogOptions.fogSize);
CalculateFogMaterial.SetFloat(LightIntensity, fogOptions.lightIntensity);
CalculateFogMaterial.SetColor(LightColor, sunLight.color);
CalculateFogMaterial.SetColor(ShadowColor, fogOptions.fogInShadowColor);
CalculateFogMaterial.SetColor(FogColor,
fogOptions.useLightColorForFog ? sunLight.color : fogOptions.fogInLightColor);
CalculateFogMaterial.SetVector(LightDir, sunLight.transform.forward);
CalculateFogMaterial.SetFloat(AmbientFog, fogOptions.ambientFog);
CalculateFogMaterial.SetVector(FogDirection, fogOptions.windDirection);
CalculateFogMaterial.SetFloat(FogSpeed, fogOptions.speed);
CalculateFogMaterial.SetTexture(BlueNoiseTexture, blueNoiseTexture2D);
Graphics.Blit(source, fogRenderTexture, CalculateFogMaterial);
}
private void RenderFog(RenderTexture fogRenderTexture, RenderTexture source)
{
if (_UseRayleighScattering)
{
CalculateFogMaterial.EnableKeyword("RAYLEIGH_SCATTERING");
CalculateFogMaterial.SetFloat(RayleighScatteringCoef, _RayleighScatteringCoef);
}
else
{
CalculateFogMaterial.DisableKeyword("RAYLEIGH_SCATTERING");
}
ToggleShaderKeyword(CalculateFogMaterial, "LIMITFOGSIZE", _LimitFogInSize);
ToggleShaderKeyword(CalculateFogMaterial, "HEIGHTFOG", _HeightFogEnabled);
var performanceRatio = CalculateRaymarchStepRatio();
CalculateFogMaterial.SetFloat(RaymarchSteps, _RayMarchSteps * Mathf.Pow(performanceRatio, 2));
CalculateFogMaterial.SetFloat(FogDensity, _FogDensityCoef);
CalculateFogMaterial.SetFloat(NoiseScale, _NoiseScale);
CalculateFogMaterial.SetFloat(ExtinctionCoef, _ExtinctionCoef);
CalculateFogMaterial.SetFloat(Anisotropy, _Anisotropy);
CalculateFogMaterial.SetFloat(BaseHeightDensity, _BaseHeightDensity);
CalculateFogMaterial.SetFloat(HeightDensityCoef, _HeightDensityCoef);
CalculateFogMaterial.SetVector(FogWorldPosition, _FogWorldPosition);
CalculateFogMaterial.SetFloat(FogSize, _FogSize);
CalculateFogMaterial.SetFloat(LightIntensity, _LightIntensity);
CalculateFogMaterial.SetColor(LightColor, SunLight.GetComponent <Light>().color);
CalculateFogMaterial.SetColor(ShadowColor, _FogInShadowColor);
CalculateFogMaterial.SetColor(FogColor, _UseLightColorForFog? SunLight.GetComponent <Light>().color : _FogInLightColor);
CalculateFogMaterial.SetVector(LightDir, SunLight.GetComponent <Light>().transform.forward);
CalculateFogMaterial.SetFloat(AmbientFog, _AmbientFog);
CalculateFogMaterial.SetVector(FogDirection, _WindDirection);
CalculateFogMaterial.SetFloat(FogSpeed, _Speed);
CalculateFogMaterial.SetTexture(BlueNoiseTexture, _BlueNoiseTexture2D);
Graphics.Blit(source, fogRenderTexture, CalculateFogMaterial);
}
private void RenderFog(RenderTexture fogTarget1, RenderTexture source)
{
if (_UseRayleighScattering)
{
CalculateFogMaterial.EnableKeyword("RAYLEIGH_SCATTERING");
CalculateFogMaterial.SetFloat("_RayleighScatteringCoef", _RayleighScatteringCoef);
}
else
{
CalculateFogMaterial.DisableKeyword("RAYLEIGH_SCATTERING");
}
ToggleShaderKeyword(CalculateFogMaterial, "LIMITFOGSIZE", _LimitFogInSize);
ToggleShaderKeyword(CalculateFogMaterial, "HEIGHTFOG", _HeightFogEnabled);
var performanceRatio = CalculateRaymarchStepRatio();
CalculateFogMaterial.SetFloat("_RaymarchSteps", _RayMarchSteps * Mathf.Pow(performanceRatio, 2));
CalculateFogMaterial.SetFloat("_FogDensity", _FogDensityCoef);
CalculateFogMaterial.SetFloat("_NoiseScale", _NoiseScale);
CalculateFogMaterial.SetFloat("_ExtinctionCoef", _ExtinctionCoef);
CalculateFogMaterial.SetFloat("_Anisotropy", _Anisotropy);
CalculateFogMaterial.SetFloat("_BaseHeightDensity", _BaseHeightDensity);
CalculateFogMaterial.SetFloat("_HeightDensityCoef", _HeightDensityCoef);
CalculateFogMaterial.SetVector("_FogWorldPosition", _FogWorldPosition);
CalculateFogMaterial.SetFloat("_FogSize", _FogSize);
CalculateFogMaterial.SetFloat("_LightIntensity", _LightIntensity);
CalculateFogMaterial.SetColor("LightColor", SunLight.GetComponent <Light>().color);
CalculateFogMaterial.SetColor("_ShadowColor", _FogInShadowColor);
CalculateFogMaterial.SetColor("_FogColor", _FogInLightColor);
CalculateFogMaterial.SetVector("_LightDir", SunLight.GetComponent <Light>().transform.forward);
CalculateFogMaterial.SetFloat("_AmbientFog", _AmbientFog);
CalculateFogMaterial.SetVector("_FogDirection", _WindDirection);
CalculateFogMaterial.SetFloat("_FogSpeed", _Speed);
Graphics.Blit(source, fogTarget1, CalculateFogMaterial);
}
private void SetMieScattering()
{
ToggleShaderKeyword(CalculateFogMaterial, "HG_SCATTERING", false);
ToggleShaderKeyword(CalculateFogMaterial, "CS_SCATTERING", false);
ToggleShaderKeyword(CalculateFogMaterial, "SCHLICK_HG_SCATTERING", false);
switch (_MieScatteringApproximation)
{
case MieScatteringApproximation.HenyeyGreenstein:
ToggleShaderKeyword(CalculateFogMaterial, "HG_SCATTERING", true);
CalculateFogMaterial.SetFloat("_MieScatteringCoef", _MieScatteringCoef);
break;
case MieScatteringApproximation.CornetteShanks:
ToggleShaderKeyword(CalculateFogMaterial, "CS_SCATTERING", true);
CalculateFogMaterial.SetFloat("_MieScatteringCoef", _MieScatteringCoef);
break;
case MieScatteringApproximation.Schlick:
CalculateKFactor();
ToggleShaderKeyword(CalculateFogMaterial, "SCHLICK_HG_SCATTERING", true);
CalculateFogMaterial.SetFloat("_kFactor", _kFactor);
CalculateFogMaterial.SetFloat("_MieScatteringCoef", _MieScatteringCoef);
break;
case MieScatteringApproximation.Off:
break;
default:
Debug.LogWarning(
$"Mie scattering approximation {_MieScatteringApproximation} is not handled by SetMieScattering()");
break;
}
}
