public Texture2D(Stream stream, bool filterLinear = true, TextureFunction textureFunction = TextureFunction.MirroredRepeat)
{
using (var image = new MagickImage(stream))
{
var format = PixelFormat.Rgb;
switch (image.ChannelCount)
{
case 3: break;
case 4: format = PixelFormat.Rgba; break;
default: throw new ArgumentOutOfRangeException("Unexpected image format");
}
image.Flip();
var bytes = image.GetPixelsUnsafe().ToArray();
TexturId = GL.GenTexture();
Bind();
GL.TexImage2D(Target, 0, (PixelInternalFormat)format, image.Width, image.Height, 0, format, PixelType.UnsignedByte, bytes);
GL.TexParameter(Target, TextureParameterName.TextureWrapS, (int)textureFunction);
GL.TexParameter(Target, TextureParameterName.TextureWrapT, (int)textureFunction);
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
var filterMagMode = filterLinear ? TextureMagFilter.Linear : TextureMagFilter.Nearest;
var filterMinMode = filterLinear ? TextureMinFilter.LinearMipmapLinear : TextureMinFilter.NearestMipmapNearest;
GL.TexParameter(Target, TextureParameterName.TextureMagFilter, (int)filterMagMode);
GL.TexParameter(Target, TextureParameterName.TextureMinFilter, (int)filterMinMode);
Unbind();
Width = image.Width;
Height = image.Height;
}
}
public Texture2D(Bitmap image, bool filterLinear = true, TextureFunction textureFunction = TextureFunction.MirroredRepeat)
{
TexturId = GL.GenTexture();
Width = image.Width;
Height = image.Height;
Bind();
BitmapData data = image.LockBits(new System.Drawing.Rectangle(0, 0, image.Width, image.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0, OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
image.UnlockBits(data);
GL.TexParameter(Target, TextureParameterName.TextureWrapS, (int)textureFunction);
GL.TexParameter(Target, TextureParameterName.TextureWrapT, (int)textureFunction);
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
var filterMagMode = filterLinear ? TextureMagFilter.Linear : TextureMagFilter.Nearest;
var filterMinMode = filterLinear ? TextureMinFilter.LinearMipmapLinear : TextureMinFilter.NearestMipmapNearest;
GL.TexParameter(Target, TextureParameterName.TextureMagFilter, (int)filterMagMode);
GL.TexParameter(Target, TextureParameterName.TextureMinFilter, (int)filterMinMode);
Unbind();
}
