public static HdriTexture LoadFromFile(string filePath)
{
var fileData = File.ReadAllBytes(filePath);
var image = ImageResultFloat.FromMemory(fileData, ColorComponents.RedGreenBlue);
var imageBytes = new List <byte>();
foreach (var fl in image.Data)
{
var imageDataByteArray = BitConverter.GetBytes(fl);
imageBytes.AddRange(imageDataByteArray);
}
var textureDataPtr = Marshal.AllocHGlobal(imageBytes.Count);
Marshal.Copy(imageBytes.ToArray(), 0, textureDataPtr, imageBytes.Count);
uint texturePtr = Gl.GenTexture();
Gl.BindTexture(TextureTarget.Texture2d, texturePtr);
Gl.TexImage2D(TextureTarget.Texture2d, 0, InternalFormat.Rgb16f, image.Width, image.Height, 0, PixelFormat.Rgb, PixelType.Float, textureDataPtr);
Marshal.FreeHGlobal(textureDataPtr);
Logging.Log($"Loaded cubemap texture {filePath}, ptr {texturePtr}");
Gl.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
Gl.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
Gl.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToEdge);
Gl.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToEdge);
Gl.BindTexture(TextureTarget.Texture2d, 0);
return(new HdriTexture(texturePtr));
}
public void LoadHdr(string filename, int width, int height, ColorComponents colorComponents)
{
ImageResultFloat result = null;
using (var stream = _assembly.OpenResourceStream(filename))
{
result = ImageResultFloat.FromStream(stream, ColorComponents.RedGreenBlueAlpha);
}
Assert.IsNotNull(result);
Assert.AreEqual(result.Width, width);
Assert.AreEqual(result.Height, height);
Assert.AreEqual(result.Comp, ColorComponents.RedGreenBlueAlpha);
Assert.AreEqual(result.SourceComp, colorComponents);
Assert.IsNotNull(result.Data);
Assert.AreEqual(result.Data.Length, result.Width * result.Height * 4);
}
