Unity HDR screenshot

screenshot.cs

if ( DoHDRscreenshot )
{
	DoHDRscreenshot = false;

	int w = source.width;
	int h = source.height;

	RenderTexture rt_hdr = RenderTexture.GetTemporary( w, h, 0, RenderTextureFormat.ARGBHalf );

	Finalpass( source, rt_hdr, bloom_rt, distortion_rt, distparms ); //note: final posteffects pass

	Texture2D tex_hdr = new Texture2D( rt_hdr.width, rt_hdr.height, TextureFormat.RGBAHalf, false );
	Graphics.SetRenderTarget( rt_hdr );
	tex_hdr.ReadPixels( new Rect(0,0,rt_hdr.width,rt_hdr.height), 0, 0 );
	tex_hdr.Apply();
	Color[] cols = tex_hdr.GetPixels();
  
  //note: from http://wiki.unity3d.com/index.php/MiniEXR
	MiniEXR.MiniEXR.MiniEXRWrite( "hdrshot.exr", (uint)w, (uint)h, cols);

	RenderTexture.ReleaseTemporary(rt_hdr);
}

well that was easy..!