/// <summary>
/// カメラ映像をスクリーンショットとして保存する
/// </summary>
private async UniTask TakeScreenShotAsync(CancellationToken ct)
{
_camera.enabled = true;
await UniTask.NextFrame(cancellationToken : ct);
_camera.enabled = false;
// GPUからのデータ取得を待つ
// AsyncGPUReadbackRequest 型が戻ってくる
var req = await AsyncGPUReadback.Request(_renderTexture, 0)
.WithCancellation(ct);
var rawByteArray = req.GetData <byte>();
// RenderTextureの内容をPNGに変換
var png = ImageConversion.EncodeNativeArrayToPNG(
rawByteArray,
_renderTexture.graphicsFormat,
(uint)_renderTexture.width,
(uint)_renderTexture.height);
var bytes = png.ToArray();
png.Dispose();
await UniTask.Run(() => File.WriteAllBytes("screenshot.png", bytes));
}
void Update()
{
if (!Input.GetMouseButtonDown(0))
{
return;
}
var src = _video.texture;
AsyncGPUReadback.Request(src, 0, (AsyncGPUReadbackRequest req) => {
var bytes = ImageConversion.EncodeNativeArrayToPNG
(req.GetData <byte>(), src.graphicsFormat,
(uint)src.width, (uint)src.height, (uint)src.width * 4);
File.WriteAllBytes("Frame.png", bytes.ToArray());
});
}
