private void OnRenderImage(RenderTexture source, RenderTexture destination)
{
FogTypePass fogType = SetMaterialUniforms();
if (fogType == FogTypePass.None)
{
Graphics.Blit(source, destination);
}
else
{
Graphics.Blit(source, destination, material, (int)fogType);
}
}
private FogTypePass SetMaterialUniforms(Camera camera)
{
// Determine the fog type pass
FogTypePass fogType = FogTypePass.DistanceOnly;
if (!distanceFog.enabled && heightFog.enabled)
{
fogType = FogTypePass.HeightOnly;
}
// Share color settings if one of the sources are set to copy the other
bool sharedColorSettings = (distanceFog.colorSelectionType == ColorSelectionType.CopyOther) ||
(heightFog.colorSelectionType == ColorSelectionType.CopyOther);
if (distanceFog.enabled && heightFog.enabled)
{
if (sharedColorSettings)
{
fogType = FogTypePass.BothSharedColorSettings;
}
else
{
fogType = FogTypePass.BothSeperateColorSettinsg;
}
}
if (!distanceFog.enabled && !heightFog.enabled)
{
return(FogTypePass.None);
}
// Get the inverse view matrix for converting depth to world position.
Matrix4x4 inverseViewMatrix = camera.cameraToWorldMatrix;
Material.SetMatrix("_InverseViewMatrix", inverseViewMatrix);
// Decide wheter the skybox should have fog applied
Material.SetInt("_ApplyDistToSkybox", distanceFog.fogSkybox ? 1 : 0);
Material.SetInt("_ApplyHeightToSkybox", heightFog.fogSkybox ? 1 : 0);
// Is the shared color sampled from a texture? Otherwise it's from a single color( picker)
if (sharedColorSettings)
{
bool selectingFromDistance = true;
FogColorSource activeSelectionSource = distanceColorSource;
ColorSelectionType activeSelectionType = distanceFog.colorSelectionType;
if (activeSelectionType == ColorSelectionType.CopyOther)
{
activeSelectionType = heightFog.colorSelectionType;
activeSelectionSource = heightColorSource;
selectingFromDistance = false;
}
SetDistanceFogUniforms();
SetHeightFogUniforms();
if (activeSelectionType == ColorSelectionType.Gradient)
{
Material.SetTexture("_FogColorTexture0", selectingFromDistance ? DistanceColorTexture : HeightColorTexture);
}
else
{
Material.SetTexture("_FogColorTexture0", selectingFromDistance ? distanceColorSource.colorRamp : heightColorSource.colorRamp);
}
}
else
{
if (distanceFog.enabled)
{
Material.SetTexture("_FogColorTexture0", distanceFog.colorSelectionType == ColorSelectionType.Gradient ? DistanceColorTexture : distanceColorSource.colorRamp);
}
if (heightFog.enabled)
{
string colorTextureIdentifier = fogType == FogTypePass.HeightOnly ? "_FogColorTexture0" : "_FogColorTexture1";
Material.SetTexture(colorTextureIdentifier, heightFog.colorSelectionType == ColorSelectionType.Gradient ? HeightColorTexture : heightColorSource.colorRamp);
}
}
// Set distance fog properties
if (distanceFog.enabled)
{
SetDistanceFogUniforms();
}
// Set height fog properties
if (heightFog.enabled)
{
SetHeightFogUniforms();
}
return(fogType);
}
