private void CameraPreRender(Camera camera)
{
if (model != null)
{
model.Restore(camera);
}
// Write camera-dependant shader values
if (innerMaterial != null && outerMaterial != null)
{
var cameraPosition = camera.transform.position;
var localCameraPosition = transform.InverseTransformPoint(cameraPosition);
var localDistance = localCameraPosition.magnitude;
var clampedSky = Mathf.InverseLerp(OuterRadius, InnerMeshRadius, localDistance);
var innerAtmosphereDepth = default(float);
var outerAtmosphereDepth = default(float);
var radiusRatio = SgtHelper.Divide(InnerMeshRadius, OuterRadius);
var scaleDistance = SgtHelper.Divide(localDistance, OuterRadius);
var innerDensity = 1.0f - InnerFog;
var outerDensity = 1.0f - OuterFog;
SgtHelper.CalculateAtmosphereThicknessAtHorizon(radiusRatio, 1.0f, scaleDistance, out innerAtmosphereDepth, out outerAtmosphereDepth);
SgtHelper.SetTempMaterial(innerMaterial, outerMaterial);
if (scaleDistance > 1.0f)
{
SgtHelper.EnableKeyword("SGT_A"); // Outside
}
else
{
SgtHelper.DisableKeyword("SGT_A"); // Outside
}
innerMaterial.SetFloat("_HorizonLengthRecip", SgtHelper.Reciprocal(innerAtmosphereDepth * innerDensity));
outerMaterial.SetFloat("_HorizonLengthRecip", SgtHelper.Reciprocal(outerAtmosphereDepth * outerDensity));
if (OuterDepthTex != null)
{
#if UNITY_EDITOR
SgtHelper.MakeTextureReadable(OuterDepthTex);
#endif
outerMaterial.SetFloat("_Sky", GetSky(camera) * OuterDepthTex.GetPixelBilinear(clampedSky / outerDensity, 0.0f).a);
}
UpdateMaterialNonSerialized();
}
}
