Font objects now have mipmap filter and mipmap sharpness support

src/modules/graphics/opengl/Font.h

@@ -127,7 +127,10 @@ public:
 	float getSpacing() const;
 
 	void setFilter(const Image::Filter &f);
-	Image::Filter getFilter();
+	const Image::Filter &getFilter();
+
+	void setMipmapSharpness(float sharpness);
+	float getMipmapSharpness() const;
 
 	// Implements Volatile.
 	bool loadVolatile();
@@ -196,6 +199,14 @@ private:
 	int texture_x, texture_y;
 	int rowHeight;
 
+	// Mipmap texture LOD bias value
+	float mipmapsharpness;
+
+	// Implementation-dependent maximum/minimum mipmap sharpness values
+	float maxmipmapsharpness;
+
+	void checkMipmapsCreated() const;
+
 	bool initializeTexture(GLint format);
 	void createTexture();
 	Glyph *addGlyph(const int glyph);