Added GL initializsation, added clear buffer and clear color options.

gl_util.go

@@ -0,0 +1,15 @@
+package goga
+
+import (
+	"github.com/go-gl/gl/v4.5-core/gl"
+	"log"
+)
+
+// Checks for GL errors and prints to log if one occured.
+func CheckGLError() {
+	error := gl.GetError()
+
+	if error != 0 {
+		log.Print(error)
+	}
+}