public static void Convert(this TexFormatGroup newFormat, Texture2D tex)
{
string path = AssetDatabase.GetAssetPath(tex);
TextureImporter im = AssetImporter.GetAtPath(path) as TextureImporter;
if (im == null || tex.format == TextureFormat.Alpha8)
{
return;
}
bool changed = false;
if (newFormat == TexFormatGroup.ASTC && !tex.format.IsASTC())
{
im.SetFormat(GetFormatFromLabel(tex, newFormat, tex.format.HasAlpha()));
changed = true;
}
else if (newFormat == TexFormatGroup.ETC2 && !tex.format.IsETC2())
{
im.SetFormat(GetFormatFromLabel(tex, newFormat, tex.format.HasAlpha()));
changed = true;
}
else if (newFormat == TexFormatGroup.PVRTC && !tex.format.IsPVRTC())
{
if (EditorUserBuildSettings.activeBuildTarget.ToRuntimePlatform().IsIos() &&
#pragma warning disable 0618
(im.GetFormat() == TextureImporterFormat.AutomaticCompressed || im.GetFormat() == TextureImporterFormat.AutomaticCrunched))
#pragma warning restore 0618
{
// automatic is the same as PVRTC
}
else if (tex.format.HasAlpha())
{
// PVRTC with alpha downgrades the image quality
// im.textureFormat = TextureImporterFormat.PVRTC_RGB4;
// changed = true;
}
else
{
im.SetFormat(GetFormatFromLabel(tex, newFormat, tex.format.HasAlpha()));
changed = true;
}
}
else if (newFormat == TexFormatGroup.ETC && !tex.format.IsETC())
{
if (EditorUserBuildSettings.activeBuildTarget == BuildTarget.Android &&
#pragma warning disable 0618
(im.GetFormat() == TextureImporterFormat.AutomaticCompressed || im.GetFormat() == TextureImporterFormat.AutomaticCrunched))
#pragma warning restore 0618
{
// automatic is the same as ETC
}
else if (tex.format.HasAlpha())
{
// alpha is not supported in ETC format
}
else
{
im.SetFormat(GetFormatFromLabel(tex, newFormat, tex.format.HasAlpha()));
changed = true;
}
#pragma warning disable 0618
}
else if (newFormat == TexFormatGroup.AUTO && (im.GetFormat() != TextureImporterFormat.AutomaticCompressed && im.GetFormat() != TextureImporterFormat.AutomaticCrunched))
#pragma warning restore 0618
{
if (tex.format.HasAlpha())
{
// compressing alpha
}
else
{
im.SetFormat(GetFormatFromLabel(tex, newFormat, tex.format.HasAlpha()));
changed = true;
}
}
if (!AssetConfig.TEX_NPOT && im.npotScale == TextureImporterNPOTScale.None && !tex.IsPOT())
{
im.npotScale = TextureImporterNPOTScale.ToNearest;
changed = true;
}
if (changed)
{
im.textureType = TextureImporterType.Default;
im.isReadable = false;
AssetDatabase.ImportAsset(path, ImportAssetOptions.ForceUpdate | ImportAssetOptions.ForceSynchronousImport);
}
}
protected override bool FilterImpl(TextureImporter importer, Texture tex)
{
return(importer.GetFormat() == texImportFormat);
}