public static byte[] Export(Texture2D source)
{
var path = AssetDatabase.GetAssetPath(source);
var textureSetting = ExportSetting.instance.texture;
MyLog.Log("---导出图片:" + source.name + " path:" + path);
//只有jpg、png可以原始图片导出，其他类型不支持
var fileName = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(Application.dataPath), path);
byte[] bs = null;
if (textureSetting.useOriginalTexture && PathHelper.IsSupportedExt(source) && System.IO.File.Exists(fileName))
{
bs = System.IO.File.ReadAllBytes(fileName);
}
else
{
var saveTextureType = TextureImporterType.Default;
var importer = UnityEditor.TextureImporter.GetAtPath(path) as TextureImporter;
if (importer)
{
saveTextureType = importer.textureType;
if (saveTextureType == TextureImporterType.NormalMap && !textureSetting.useNormalTexture)
{
//法线贴图类型贴图因为Unity特殊处理过，如果要正常导出，就要转换一下类型
importer.textureType = TextureImporterType.Default;
importer.SaveAndReimport();
}
}
var renderTexture = RenderTexture.GetTemporary(source.width, source.height);
Graphics.Blit(source, renderTexture);
RenderTexture.active = renderTexture;
var exportTexture = new Texture2D(source.width, source.height);
exportTexture.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
exportTexture.Apply();
try
{
string ext = PathHelper.GetTextureExt(source);
if (ext == "jpg" || ext == "jpeg")
{
bs = exportTexture.EncodeToJPG(textureSetting.jpgQuality);
}
// else if (ext == "exr")
// {
// bs = exportTexture.EncodeToEXR();
// }
else
{
bs = exportTexture.EncodeToPNG();
}
}
catch (System.Exception e)
{
MyLog.LogError(e.StackTrace);
MyLog.LogError("图片导出出错:" + path + " 请保证原始资源是可读写，非压缩文件");
}
if (importer && importer.textureType != saveTextureType)
{
importer.textureType = saveTextureType;
importer.SaveAndReimport();
}
}
return(bs);
}