protected int LoadTexture(Bitmap data, TextureWrapMode mode) { BitmapData lockedBitmap = data.LockBits(new Rectangle(Point.Empty, data.Size), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb); byte[] buffer = new byte[lockedBitmap.Width * lockedBitmap.Height * 4]; for (int i = 0; i < buffer.Length; i += 4) { byte r, g, b, a; a = Marshal.ReadByte(lockedBitmap.Scan0 + i); r = Marshal.ReadByte(lockedBitmap.Scan0 + i + 1); g = Marshal.ReadByte(lockedBitmap.Scan0 + i + 2); b = Marshal.ReadByte(lockedBitmap.Scan0 + i + 3); buffer[i] = r; buffer[i + 1] = g; buffer[i + 2] = b; buffer[i + 3] = a; } data.UnlockBits(lockedBitmap); CheckGlErrors("pre-texture-gen"); int textureId = Gl.GenTexture(); Gl.ActiveTexture(TextureUnit.Texture0); Gl.BindTexture(TextureTarget.Texture2D, textureId); 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)mode); Gl.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)mode); CheckGlErrors("pre-texture-upload"); Gl.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba8, data.Width, data.Height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, buffer); CheckGlErrors("post-texture-upload"); if (mode == TextureWrapMode.ClampToBorder) { float[] borderColor = new float[] { 0xff, 0x14, 0x93 }; Gl.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureBorderColor, borderColor); } CheckGlErrors("ok-texture-gen"); return(textureId); }