void BakeShadows()
{
#if UNITY_EDITOR
ShadowContainer container = null;
ShadowFactory.Instance.Get(new ShadowRenderingRequest(this), ref container);
var renderTexture = container.Texture;
Debug.Assert(renderTexture);
var texture = new Texture2D(renderTexture.width, renderTexture.height,
TextureFormat.ARGB32, false);
var activeTexture = RenderTexture.active;
RenderTexture.active = renderTexture;
texture.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
RenderTexture.active = activeTexture;
var textureName = $"{SceneManager.GetActiveScene().name} - {gameObject.name} @{size}.png";
var texturePath = BAKED_SHADOWS_PATH + textureName;
Directory.CreateDirectory(BAKED_SHADOWS_PATH);
File.WriteAllBytes(texturePath, texture.EncodeToPNG());
AssetDatabase.Refresh(ImportAssetOptions.DontDownloadFromCacheServer);
var importer = (TextureImporter)AssetImporter.GetAtPath(texturePath);
TextureImporterSettings importSettings = new TextureImporterSettings();
importer.ReadTextureSettings(importSettings);
importSettings.textureType = TextureImporterType.Sprite;
importSettings.spriteMeshType = SpriteMeshType.Tight;
importSettings.spriteGenerateFallbackPhysicsShape = false;
importSettings.alphaSource = TextureImporterAlphaSource.FromInput;
importSettings.alphaIsTransparency = true;
importSettings.mipmapEnabled = false;
importer.SetTextureSettings(importSettings);
importer.SaveAndReimport();
var bakedSprite = AssetDatabase.LoadAssetAtPath <Sprite>(texturePath);
bakedShadows.Add(bakedSprite);
if (Graphic is Image image)
{
SpriteAtlasCache.AddToSameAtlas(bakedSprite, image.sprite);
}
shadowRenderer.SetSprite(bakedSprite);
#endif
}
void RemoveBakedShadow()
{
#if UNITY_EDITOR
foreach (var sprite in bakedShadows)
{
if (!sprite)
{
continue;
}
if (Graphic is Image)
{
SpriteAtlasCache.RemoveFromAllAtlas(sprite);
}
var path = AssetDatabase.GetAssetPath(sprite);
AssetDatabase.DeleteAsset(path);
}
bakedShadows.Clear();
#endif
}
