/// <summary>
/// Disables sampling of a color map in the grass shader. This must be called when a color map was used, but the current game context no longer as one active
/// </summary>
public static void DisableGlobally()
{
Shader.SetGlobalTexture("_ColorMap", null);
Shader.SetGlobalVector("_ColorMapUV", Vector4.zero);
Active = null;
}
public static GrassColorMap SaveColorMapToAsset(GrassColorMap colorMap)
{
string assetPath = "Assets/";
assetPath = EditorUtility.SaveFolderPanel("Asset destination folder", assetPath, "");
if (assetPath == string.Empty)
{
return(colorMap);
}
assetPath = assetPath.Replace(Application.dataPath, "Assets/");
assetPath += colorMap.name + ".asset";
AssetDatabase.CreateAsset(colorMap, assetPath);
colorMap = (GrassColorMap)AssetDatabase.LoadAssetAtPath(assetPath, typeof(GrassColorMap));
//Save texture to asset
if (!colorMap.texture)
{
colorMap.texture = new Texture2D(colorMap.resolution, colorMap.resolution);
}
colorMap.texture.name = colorMap.name + " Texture";
AssetDatabase.AddObjectToAsset(colorMap.texture, colorMap);
string path = AssetDatabase.GetAssetPath(colorMap.texture);
AssetDatabase.ImportAsset(path);
//Reference serialized texture asset
colorMap.texture = (Texture2D)AssetDatabase.LoadAssetAtPath(path, typeof(Texture2D));
return(colorMap);
}
public static GrassColorMap NewColorMap()
{
GrassColorMap colorMap = ScriptableObject.CreateInstance <GrassColorMap>();
SetName(colorMap);
return(colorMap);
}
private void OnEnable()
{
colorMap = (GrassColorMap)target;
texture = serializedObject.FindProperty("texture");
overrideTexture = serializedObject.FindProperty("overrideTexture");
customTex = serializedObject.FindProperty("customTex");
bounds = serializedObject.FindProperty("bounds");
}
private void OnDisable()
{
Instance = null;
//Disable sampling of color map
GrassColorMap.DisableGlobally();
#if UNITY_EDITOR
EditorSceneManager.sceneSaved -= OnSceneSave;
#endif
}
public void SetActive()
{
if (!texture || (overrideTexture && !customTex))
{
Debug.LogWarning("Tried to activate grass color map with null texture", this);
return;
}
Shader.SetGlobalTexture("_ColorMap", overrideTexture? customTex : texture);
//Enables sampling of color map in shader
uv.w = 1f;
Shader.SetGlobalVector("_ColorMapUV", uv);
Active = this;
}
public void OnEnable()
{
Instance = this;
Init();
if (colorMap)
{
colorMap.SetActive();
}
else
{
if (!GrassColorMapRenderer.Instance)
{
GrassColorMap.DisableGlobally();
}
}
#if UNITY_EDITOR
UnityEditor.SceneView.duringSceneGui += OnSceneGUI;
#endif
}
public static void SetName(GrassColorMap colorMap)
{
string prefix = EditorSceneManager.GetActiveScene().name;
if (prefix == "")
{
prefix = "Untitled";
}
#if UNITY_EDITOR
colorMap.name = EditorSceneManager.GetActiveScene().name + "_GrassColormap";
if (colorMap.texture != null)
{
colorMap.texture.name = EditorSceneManager.GetActiveScene().name + "_GrassColormap";
}
#else
colorMap.name = EditorSceneManager.GetActiveScene().name + "_GrassColormap";
if (colorMap.texture != null)
{
colorMap.texture.name = "GrassColorMap_" + colorMap.GetInstanceID();
}
#endif
}
public static void ApplyUVFromTerrainBounds(GrassColorMap colorMap, GrassColorMapRenderer renderer)
{
colorMap.bounds = ColorMapEditor.GetTerrainBounds(renderer.terrainObjects);
colorMap.uv = ColorMapEditor.BoundsToUV(renderer.colorMap.bounds);
}
private void OnDisable()
{
Instance = null;
//Disable sampling of color map
GrassColorMap.DisableGlobally();
}
