diff --git a/src/GPUFontAtlasLayerCombo.h b/src/GPUFontAtlasLayerCombo.h
index 5d52583..1231128 100644
--- a/src/GPUFontAtlasLayerCombo.h
+++ b/src/GPUFontAtlasLayerCombo.h
@@ -20,6 +20,9 @@ class GPUFontAtlasLayerCombo : public AtlasLayerCombo {
         glm::mat4 getProjectionMatrix(float aspect){
             return glm::perspective( /* fovy = */ glm::radians(60.0f), aspect, 0.002f, 12.000f);
         }
+        glm::mat4 getOrthoProjectionMatrix(float w, float h){
+            return glm::ortho(-(w * 0.5f), (w * 0.5f), -(h * 0.5f), (h * 0.5f), 0.002f, 12.000f);
+        }
 
         glm::mat4 getViewMatrix(){
             auto translation = glm::translate(position);