larger font hack + linear texture filter for images

src/texture_uploader.hpp

@@ -5,10 +5,14 @@
 struct TextureUploaderI {
 	static constexpr const char* version {"1"};
 
+	enum Filter {
+		NEAREST,
+		LINEAR,
+	};
+
 	virtual ~TextureUploaderI(void) {}
 
-	//virtual uint64_t uploadRGBA(const uint8_t* data, uint64_t data_size) = 0;
-	virtual uint64_t uploadRGBA(const uint8_t* data, uint32_t width, uint32_t height) = 0;
+	virtual uint64_t uploadRGBA(const uint8_t* data, uint32_t width, uint32_t height, Filter filter = LINEAR) = 0;
 
 	virtual void destroy(uint64_t tex_id) = 0;
 };