public Vector3Half ToVector3Half()
{
Vector3Half ret = new Vector3Half();
if (exp != 0)
{
float f = (float)Math.Pow(2.0, exp - (int)(128 + 8));
ret.x = (Half)(red * f);
ret.y = (Half)(green * f);
ret.z = (Half)(blue * f);
}
return(ret);
}
public override T Import <T>(System.IO.Stream source, string source_name, ResourceManager man)
{
Glorg2.Graphics.OpenGL.Texture2D res;
var rd = new StreamReader(source, false);
string line = rd.ReadLine();
string format = "";
int width = -1, height = -1;
int exposure = 0;
Match m;
if (line != "#?RADIANCE")
{
throw new FormatException("Unrecognized HDR format");
}
while (true)
{
line = rd.ReadLine();
int index = line.IndexOf('=');
if (index > 0)
{
string name = line.Substring(0, index);
string value = line.Substring(index + 1);
if (name == "EXPOSURE")
{
exposure = int.Parse(value);
}
else if (name == "FORMAT")
{
format = value;
}
}
else if ((m = reg.Match(line)).Success)
{
width = int.Parse(m.Groups["XValue"].Value);
height = int.Parse(m.Groups["YValue"].Value);
break;
}
}
if (width == -1 || height == -1)
{
throw new FormatException("Could not figure out the size of the HDR image");
}
Vector3Half[] data = new Vector3Half[width * height];
if (format == "32-bit_rgbe" || (width < 8 || width > 0x7FFFF))
{
ReadRgbe(source, data);
}
else if (format == "32-bit_rle_rgbe")
{
ReadRgbeRle(source, data, width, height);
}
else if (format == "32-bit_rle_xyzw")
{
throw new NotSupportedException(format + " not supported.");
}
res = new Graphics.OpenGL.Texture2D(width, height, Graphics.OpenGL.InternalFormat.Rgb16, Graphics.OpenGL.PixelDataType.Float, Graphics.OpenGL.PixelType.Rgb, source_name);
res.AssignBuffer(data);
return(res as T);
}