diff --git a/draw2dbase/text.go b/draw2dbase/text.go
index 2a5f04e..dd05889 100644
--- a/draw2dbase/text.go
+++ b/draw2dbase/text.go
@@ -29,7 +29,6 @@ func loadCurrentFont(gc draw2d.GraphicContext) (*truetype.Font, error) {
 	}
 	gc.SetFont(font)
 	gc.SetFontSize(gc.GetFontSize())
-	recalc(gc)
 	return font, nil
 }
 
@@ -116,9 +115,9 @@ func GetStringBounds(gc draw2d.GraphicContext, s string) (left, top, right, bott
 	return left, top, right, bottom
 }
 
-// recalc recalculates scale and bounds values from the font size, screen
+// Recalc recalculates scale and bounds values from the font size, screen
 // resolution and font metrics, and invalidates the glyph cache.
-func recalc(gc draw2d.GraphicContext) {
+func Recalc(gc draw2d.GraphicContext) {
 	gc.SetScale(gc.GetFontSize() * float64(gc.GetDPI()) * (64.0 / 72.0))
 }
 
diff --git a/draw2dgl/gc.go b/draw2dgl/gc.go
index aab3cb0..97aea20 100644
--- a/draw2dgl/gc.go
+++ b/draw2dgl/gc.go
@@ -173,6 +173,7 @@ func (gc *GraphicContext) StrokeStringAt(text string, x, y float64) (width float
 
 func (gc *GraphicContext) SetDPI(dpi int) {
 	gc.DPI = dpi
+	draw2dbase.Recalc(gc)
 }
 
 func (gc *GraphicContext) GetDPI() int {
@@ -182,6 +183,7 @@ func (gc *GraphicContext) GetDPI() int {
 // SetFontSize sets the font size in points (as in ``a 12 point font'').
 func (gc *GraphicContext) SetFontSize(fontSize float64) {
 	gc.Current.FontSize = fontSize
+	draw2dbase.Recalc(gc)
 }
 
 //TODO
diff --git a/draw2dimg/ftgc.go b/draw2dimg/ftgc.go
index 470adbc..1611c9c 100644
--- a/draw2dimg/ftgc.go
+++ b/draw2dimg/ftgc.go
@@ -145,6 +145,7 @@ func (gc *GraphicContext) StrokeStringAt(text string, x, y float64) (cursor floa
 
 func (gc *GraphicContext) SetDPI(dpi int) {
 	gc.DPI = dpi
+	draw2dbase.Recalc(gc)
 }
 
 func (gc *GraphicContext) GetDPI() int {
@@ -154,6 +155,7 @@ func (gc *GraphicContext) GetDPI() int {
 // SetFontSize sets the font size in points (as in ``a 12 point font'').
 func (gc *GraphicContext) SetFontSize(fontSize float64) {
 	gc.Current.FontSize = fontSize
+	draw2dbase.Recalc(gc)
 }
 
 func (gc *GraphicContext) paint(rasterizer *raster.Rasterizer, color color.Color) {