private IEnumerator SaveSheetCoroutine(List <Material> mats, string filename, int w, int h, IPlanet planet, int size)
{
var scale = size / base_width;
base_width = base_height = size;
var texture = Texture2D.whiteTexture;
var renderTexture = RenderTexture.GetTemporary(base_width, base_height, 0);
var tex = new Texture2D(base_width * w, base_height * h, TextureFormat.RGBA32, false);
int index = 1;
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
texture = Texture2D.whiteTexture;
foreach (var mat in mats)
{
Graphics.Blit(texture, renderTexture, mat);
}
RenderTexture.active = renderTexture;
tex.ReadPixels(new Rect(0f, 0f, renderTexture.width, renderTexture.height), base_width * x, base_height * y);
var atime = (float)index / (float)(w * h);
var t = Mathf.Lerp(0f, 1f, atime);
planet.SetCustomTime(t);
index++;
}
}
// apply tex and write png file
tex.Apply();
var bytes = tex.EncodeToPNG();
Object.DestroyImmediate(tex);
RenderTexture.ReleaseTemporary(renderTexture);
yield return(new WaitForEndOfFrame());
#if UNITY_WEBGL && !UNITY_EDITOR
DownloadFile(gameObject.name, "OnFileDownload", filename + ".png", bytes, bytes.Length);
#else
var path = StandaloneFileBrowser.SaveFilePanel("Save Sprite Sheets", "", filename, "png");
File.WriteAllBytes(path, bytes);
#endif
}