/// <summary>
/// Load bmp image
/// </summary>
/// <param name="path">image path</param>
/// <returns>Image information per pixel</returns>
public static MBitmap LoadImage(string path)
{
MBitmap bitmap = new MBitmap();
Stream imageStream = File.OpenRead(path);
BinaryReader reader = new BinaryReader(imageStream);
bitmap.header.bfType = reader.ReadUInt16();
bitmap.header.bfSize = reader.ReadUInt32();
bitmap.header.bfReserved1 = reader.ReadUInt16();
bitmap.header.bfReserved2 = reader.ReadUInt16();
bitmap.header.bfOffBytes = reader.ReadUInt32();
bitmap.inforHeader.biSize = reader.ReadUInt32();
bitmap.inforHeader.biWidth = reader.ReadUInt32();
bitmap.inforHeader.biHeight = reader.ReadUInt32();
bitmap.inforHeader.biPlanes = reader.ReadUInt16();
bitmap.inforHeader.biBitCount = reader.ReadUInt16();
bitmap.inforHeader.biCompression = reader.ReadUInt32();
bitmap.inforHeader.biSizeImage = reader.ReadUInt32();
bitmap.inforHeader.biXPelsPerMeter = reader.ReadUInt32();
bitmap.inforHeader.biYPelsPerMeter = reader.ReadUInt32();
bitmap.inforHeader.biClrUsed = reader.ReadUInt32();
bitmap.inforHeader.biClrImportant = reader.ReadUInt32();
byte[] temp = reader.ReadBytes((int)reader.BaseStream.Length);
bitmap.byteBuffer = new byte[temp.Length];
for (int i = 2; i < temp.Length; i += 3)
{
bitmap.byteBuffer[i - 2] = temp[i];
bitmap.byteBuffer[i - 1] = temp[i - 1];
bitmap.byteBuffer[i] = temp[i - 2];
}
return(bitmap);
}
/// <summary>
/// Load texture image file
/// </summary>
/// <param name="imageName">image path</param>
/// <returns>texture Id</returns>
public static int CreateTexture2D(string imageName)
{
int[] textureId = { 0 };
MBitmap bitm = MImageUtil.LoadImage(imageName);
byte[] pixels = bitm.byteBuffer;
GL.PixelStore(PixelStoreParameter.UnpackAlignment, 4);
// Generate a texture object
GL.GenTextures(1, textureId);
// Bind the texture object
GL.BindTexture(TextureTarget.Texture2D, textureId[0]);
// Load the texture
GL.TexImage2D(TextureTarget2d.Texture2D, 0, TextureComponentCount.Rgb, (int)bitm.inforHeader.biWidth, (int)bitm.inforHeader.biHeight, 0, PixelFormat.Rgb, PixelType.UnsignedByte, pixels);
// Set the filtering mode
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (float)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (float)All.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (float)All.LinearMipmapLinear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (float)All.Linear);
GL.GenerateMipmap(TextureTarget.Texture2D);
return(textureId[0]);
}
