public Texture2D saveTexture(Texture2D texture, int index = -1, string imageName = "")
{
string basename = GLTFUtils.cleanName(texture.name + (index >= 0 ? "_" + index.ToString() : "") + ".png"); // Extension will be overridden
string fullPath = Path.Combine(_importTexturesDirectory, basename);
// Write texture
string newAssetPath = GLTFTextureUtils.writeTextureOnDisk(texture, fullPath, true);
// Reload as asset
string projectPath = GLTFUtils.getPathProjectFromAbsolute(newAssetPath);
Texture2D tex = (Texture2D)AssetDatabase.LoadAssetAtPath(projectPath, typeof(Texture2D));
_parsedImages.Add(tex);
return(tex);
}
private static Texture2D SplitRoughnessTexture(Texture2D texture)
{
int width = texture.width;
int height = texture.height;
string assetPath = AssetDatabase.GetAssetPath(texture);
TextureImporter im = AssetImporter.GetAtPath(assetPath) as TextureImporter;
im.isReadable = true;
im.SaveAndReimport();
var iColor = texture.GetPixels();
im.isReadable = false;
im.SaveAndReimport();
// Let's consider that the three textures have the same resolution
Color[] colors = new Color[width * height];
for (int i = 0; i < colors.Length; i += 1)
{
float a = 1 - iColor[i].a;
colors[i] = new Color(a, a, a);
}
var res = new Texture2D(width, height);
res.SetPixels(colors);
string basename = Path.GetFileNameWithoutExtension(assetPath) + "_rg";
string fullPath = Path.GetFullPath(Path.GetDirectoryName(assetPath)) + "/" + basename + ".png";
string newAssetPath = GLTFTextureUtils.writeTextureOnDisk(res, fullPath, true);
string projectPath = GLTFUtils.getPathProjectFromAbsolute(newAssetPath);
Texture2D tex = (Texture2D)AssetDatabase.LoadAssetAtPath(projectPath, typeof(Texture2D));
return(tex);
}