Move GL errors behind hints flag as the are usually recoverable and c…

…an be confusing

Fixes #1112

internal/hints.go

@@ -7,6 +7,11 @@ import (
 	"runtime"
 )
 
+// HintsEnabled returns true to indicate that hints are currently switched on.
+func HintsEnabled() bool {
+	return true
+}
+
 // LogHint reports a developer hint that should be followed to improve their app.
 func LogHint(reason string) {
 	log.Println("Fyne hint: ", reason)

internal/hints_disabled.go

@@ -2,6 +2,12 @@
 
 package internal
 
+// HintsEnabled returns false to indicate that hints are not currently switched on.
+// To enable please rebuild with "-tags hints" parameters.
+func HintsEnabled() bool {
+	return false
+}
+
 // LogHint reports a developer hint that should be followed to improve their app.
 // This does nothing unless the "hints" build flag is used.
 func LogHint(reason string) {

internal/painter/gl/gl_common.go

@@ -11,6 +11,7 @@ import (
 
 	"fyne.io/fyne"
 	"fyne.io/fyne/canvas"
+	"fyne.io/fyne/internal"
 	"fyne.io/fyne/internal/cache"
 	"fyne.io/fyne/internal/painter"
 	"fyne.io/fyne/theme"
@@ -19,7 +20,7 @@ import (
 var textures = make(map[fyne.CanvasObject]Texture, 1024)
 
 func logGLError(err uint32) {
-	if err == 0 {
+	if err == 0 || !internal.HintsEnabled() {
 		return
 	}