private void SetMieScattering()
{
ShaderFeatureHelper(FogMaterial, Shader_HG_SCATTERING, false);
ShaderFeatureHelper(FogMaterial, Shader_CS_SCATTERING, false);
ShaderFeatureHelper(FogMaterial, Shader_SCHLICK_HG_SCATTERING, false);
switch (m_MieScatteringApproximation)
{
case MieScatteringApproximation.HenyeyGreenstein:
ShaderFeatureHelper(FogMaterial, Shader_HG_SCATTERING, true);
FogMaterial.SetFloat(ShaderIDs.MieScatteringCoeff, m_MieScatteringCoeff);
break;
case MieScatteringApproximation.CornetteShanks:
ShaderFeatureHelper(FogMaterial, Shader_CS_SCATTERING, true);
FogMaterial.SetFloat(ShaderIDs.MieScatteringCoeff, m_MieScatteringCoeff);
break;
case MieScatteringApproximation.Schlick:
CalculateKFactor();
ShaderFeatureHelper(FogMaterial, Shader_SCHLICK_HG_SCATTERING, true);
FogMaterial.SetFloat(ShaderIDs.KFactor, k_Factor);
FogMaterial.SetFloat(ShaderIDs.MieScatteringCoeff, m_MieScatteringCoeff);
break;
case MieScatteringApproximation.Off:
break;
default:
break;
}
}
protected override void LateUpdate()
{
base.LateUpdate();
Bounds b = fogRenderer.bounds;
Vector3 shrinker = b.size * -(1.0f - FogProfile.FogPercentage);
b.Expand(shrinker);
FogMaterial.SetVector("_FogBoxMin", b.min);
FogMaterial.SetVector("_FogBoxMax", b.max);
FogMaterial.SetVector("_FogBoxMinDir", (b.max - b.min).normalized);
FogMaterial.SetVector("_FogBoxMaxDir", (b.min - b.max).normalized);
FogMaterial.SetFloat("_FogBoxDiameter", Vector3.Distance(b.min, b.max));
fogRenderer.enabled = (FogProfile.FogDensity > 0.0f);
}
private void FogUpdate()
{
if (Mathf.Abs(lastDepth - Depth) > 0.1f)
{
BuildMesh();
}
PositionAndScale();
FogOffset += Time.fixedDeltaTime * (WindSpeed * 0.001f);
FogMaterial.SetColor("_FogColor", FogColor);
FogMaterial.SetFloat("_FogCover", FogCover);
FogMaterial.SetFloat("_FogOffset", FogOffset);
FogMaterial.SetFloat("_FogTilingX", FogTiling.x);
FogMaterial.SetFloat("_FogTilingY", FogTiling.y);
FogMaterial.SetFloat("_VerticalMotion", VerticalSpeed);
}
private void RenderFog(RenderTexture fogRenderTexture, RenderTexture src)
{
if (m_EnableRayleighScattering)
{
ShaderFeatureHelper(FogMaterial, Shader_RAYLEIGH_SCATTERING, true);
FogMaterial.SetFloat(ShaderIDs.RayleighScatteringCoeff, m_RayleighScatteringCoeff);
}
else
{
ShaderFeatureHelper(FogMaterial, Shader_RAYLEIGH_SCATTERING, false);
}
ShaderFeatureHelper(FogMaterial, Shader_LIMIT_FOG_SIZE, m_LimitFogSize);
ShaderFeatureHelper(FogMaterial, Shader_HEIGHTFOG, m_HeightFogEnabled);
var rmsr = CalculateRaymarchStepRation();
FogMaterial.SetFloat(ShaderIDs.RayMarchingSteps, m_RayMarchingSteps * Mathf.Pow(rmsr, 2));
FogMaterial.SetFloat(ShaderIDs.FogDensity, m_FogDensityCoeff);
FogMaterial.SetFloat(ShaderIDs.NoiseScale, m_NoiseScale);
FogMaterial.SetFloat(ShaderIDs.ExtinctionCoeff, m_ExtinctionCoeff);
FogMaterial.SetFloat(ShaderIDs.Anisotropy, m_Anisotropy);
FogMaterial.SetFloat(ShaderIDs.BaseHeightDensity, m_BaseHeightDensity);
FogMaterial.SetVector(ShaderIDs.FogWorldPosition, m_FogWorldPosition);
FogMaterial.SetFloat(ShaderIDs.FogSize, m_FogSize);
FogMaterial.SetFloat(ShaderIDs.LightIntensity, m_LightIntensity);
FogMaterial.SetColor(ShaderIDs.FogColor, m_Light.GetComponent <Light>().color);
FogMaterial.SetColor(ShaderIDs.ShadowColor, m_FogInShadowColor);
FogMaterial.SetColor(ShaderIDs.FogColor, m_UseLightColor ? m_Light.GetComponent <Light>().color : m_FogInLightColor);
FogMaterial.SetVector(ShaderIDs.LightDir, m_Light.GetComponent <Light>().transform.forward);
FogMaterial.SetFloat(ShaderIDs.AmbientFog, m_AmbientFog);
FogMaterial.SetVector(ShaderIDs.FogDirection, m_WindDirection);
FogMaterial.SetFloat(ShaderIDs.FogSpeed, m_WindSpeed);
FogMaterial.SetTexture(ShaderIDs.BlurNoiseTexture, m_BlurNoiseTexture2D);
Graphics.Blit(src, fogRenderTexture, FogMaterial);
}
protected override void UpdateMaterial()
{
base.UpdateMaterial();
if (FogHeight > 0.0f)
{
FogMaterial.SetFloat("_FogHeight", FogHeight);
if (FogNoiseHeightScale > 0.0f && FogNoiseHeight != null)
{
FogMaterial.SetTexture("_FogNoiseHeight", FogNoiseHeight);
FogMaterial.EnableKeyword("ENABLE_FOG_HEIGHT_WITH_NOISE");
FogMaterial.DisableKeyword("ENABLE_FOG_HEIGHT");
}
else
{
FogMaterial.EnableKeyword("ENABLE_FOG_HEIGHT");
FogMaterial.DisableKeyword("ENABLE_FOG_HEIGHT_WITH_NOISE");
}
}
else
{
FogMaterial.DisableKeyword("ENABLE_FOG_HEIGHT");
FogMaterial.DisableKeyword("ENABLE_FOG_HEIGHT_WITH_NOISE");
}
if (Sun == null)
{
FogMaterial.DisableKeyword("ENABLE_SUN");
}
else
{
if (Sun.intensity == 0.0f || !SunEnabled || (Sun.color.r == 0.0f && Sun.color.g == 0.0f && Sun.color.b == 0.0f))
{
FogMaterial.DisableKeyword("ENABLE_SUN");
}
else
{
FogMaterial.EnableKeyword("ENABLE_SUN");
}
}
}