static void Test_Cairo()
{
Stopwatch sw = new Stopwatch();
sw.Start();
var surface = Cairo.cairo_image_surface_create(CairoFormat.CairoFormatArgb32, 800, 600);
var cr = Cairo.cairo_create(surface);
Cairo.cairo_set_source_rgb(cr, 0, 0, 0);
Cairo.cairo_select_font_face(cr, "Sans", CairoFontSlant.CairoFontSlantNormal,
CairoFontWeight.CairoFontWeightNormal);
Cairo.cairo_set_font_size(cr, 40.0);
Cairo.cairo_move_to(cr, 10.0, 50.0);
Cairo.cairo_show_text(cr, "Myvar");
//we will use thos for now later we can implment the opengl stuff
Cairo.cairo_surface_write_to_png(surface, "image.png");
//Cairo.cairo_surface_flush(cr);
//var data = Cairo.cairo_image_surface_get_data(surface);
//load into texture using
//glTexImage2D(GL_TEXTURE_2D, 0, 4, tex_w,tex_h, 0,GL_BGRA, GL_UNSIGNED_BYTE, data);
//when you create the texture. Use glTexSubImage2D(...) to update th texture when the image content changes
//. For speed set the filters for the texture to GL_NEAREST
Cairo.cairo_destroy(cr);
Cairo.cairo_surface_destroy(surface);
sw.Stop();
Console.WriteLine($"Time: {sw.Elapsed}");
}
public void SaveToPng(string png)
{
Cairo.cairo_surface_write_to_png(Surface, png);
Cairo.cairo_destroy(Cr);
Cairo.cairo_surface_destroy(Surface);
}
