try to add text support on glfw add font file

glfw.go

@@ -5,10 +5,12 @@ import (
 	"fmt"
 	"image"
 	"log"
+    "os"
 
 	"github.com/go-gl/gl/v2.1/gl"
 	"github.com/go-gl/glfw/v3.1/glfw"
 	"github.com/lordwelch/qml"
+    "github.com/go-gl/gltext"
 )
 
 var (
@@ -19,8 +21,18 @@ var (
 	projMonitor *glfw.Monitor
 	tex1        *uint32 //identifier for opengl texture
 	texDel      Bool    //if texture should be deleted
+    flt *os.File
+    f *gltext.Font
 )
 
+func loadfont(){
+
+    flt,err = os.Open("Comfortaa-Regular.ttf")
+    if err != nil {
+        f, err = gltext.LoadTruetype(flt, 30, 32, 255, gltext.LeftToRight)
+    }
+}
+
 func setupScene() {
 
 	gl.ClearColor(0, 0, 0, 0)
@@ -63,6 +75,7 @@ func drawSlide() {
 	gl.Vertex3f(-1, -1, 0)
 
 	gl.End()
+    f.Printf(5,10,"test")
 
 }
 
@@ -142,6 +155,7 @@ func glInit() {
 	if err := gl.Init(); err != nil {
 		panic(err)
 	}
+    loadfont()
 
 	win.SetPos(projMonitor.GetPos())
 	setupScene()