public static Dictionary <string, Rect> PackTexture(Dictionary <string, Texture2D> smallTextures, string sFileName, Shader shader, EPackColorFormat eFormat = EPackColorFormat.DecideByShader)
{
Dictionary <string, Rect> res = new Dictionary <string, Rect>();
List <Texture2D> textureList = new List <Texture2D>();
List <string> textureIdList = new List <string>();
foreach (string stexture in smallTextures.Keys)
{
textureIdList.Add(stexture);
textureList.Add(smallTextures[stexture]);
}
Texture2D bigTexture = new Texture2D(2048, 2048);
Rect[] rects = bigTexture.PackTextures(textureList.ToArray(), 0, 2048);
for (int i = 0; i < rects.Length; ++i)
{
res.Add(textureIdList[i], rects[i]);
}
bigTexture.Apply(true);
if (bigTexture.format != TextureFormat.ARGB32 && bigTexture.format != TextureFormat.RGB24)
{
Texture2D newTexture = new Texture2D(bigTexture.width, bigTexture.height);
newTexture.SetPixels(bigTexture.GetPixels(0), 0);
bigTexture = newTexture;
}
if (EPackColorFormat.ForcePng == eFormat || ((null == shader || shader.renderQueue > 2400) && EPackColorFormat.ForceJpg != eFormat))
{
byte[] pngData = bigTexture.EncodeToPNG();
if (pngData != null)
{
File.WriteAllBytes(Application.dataPath + "/" + sFileName + ".png", pngData);
AssetDatabase.Refresh();
if (null != shader)
{
Material newMat = new Material(shader)
{
mainTexture =
AssetDatabase.LoadAssetAtPath("Assets/" + sFileName + ".png", typeof(Texture2D)) as
Texture2D
};
AssetDatabase.CreateAsset(newMat, "Assets/" + sFileName + ".mat");
}
}
}
else
{
byte[] pngData = bigTexture.EncodeToJPG();
if (pngData != null)
{
File.WriteAllBytes(Application.dataPath + "/" + sFileName + ".jpg", pngData);
AssetDatabase.Refresh();
if (null != shader)
{
Material newMat = new Material(shader)
{
mainTexture =
AssetDatabase.LoadAssetAtPath("Assets/" + sFileName + ".jpg", typeof(Texture2D)) as
Texture2D
};
AssetDatabase.CreateAsset(newMat, "Assets/" + sFileName + ".mat");
}
}
}
AssetDatabase.Refresh();
return(res);
}
public static Dictionary <string, Rect> PackTextureInDataBase(Texture2D[] smallTextures, string sFileName, Shader shader, EPackColorFormat eFormat = EPackColorFormat.DecideByShader)
{
Dictionary <string, Texture2D> res = new Dictionary <string, Texture2D>();
foreach (Texture2D texture in smallTextures)
{
string texturePath = AssetDatabase.GetAssetPath(texture);
if (!res.ContainsKey(texturePath))
{
string sFullPath = "file:///" + Application.dataPath + texturePath.Substring(6, texturePath.Length - 6);
WWW www = new WWW(sFullPath);
Texture2D t1 = AssetDatabase.LoadAssetAtPath(texturePath, typeof(Texture2D)) as Texture2D;
Debug.Assert(t1 != null, "t1 != null");
Texture2D duplic = new Texture2D(t1.width, t1.height, t1.format, t1.mipmapCount > 0);
www.LoadImageIntoTexture(duplic);
res.Add(texturePath, duplic);
}
}
return(PackTexture(res, sFileName, shader, eFormat));
}