public void DrawSubImageWithMsdf(GLBitmap bmp, ref PixelFarm.Drawing.Rectangle r, float targetLeft, float targetTop) { if (bmp.IsBigEndianPixel) { msdfShader.RenderSubImage(bmp, r.Left, r.Top, r.Width, r.Height, targetLeft, targetTop); } else { msdfShader.RenderSubImage(bmp, r.Left, r.Top, r.Width, r.Height, targetLeft, targetTop); } }