Add FreeType, progress to title screen

GpCommon/IGpDisplayDriver.h

@@ -1,15 +1,20 @@
 #pragma once
 
-#include "PixelFormat.h"
-
-// Display drivers are responsible for timing and calling the game tick function.
-class IGpDisplayDriver
-{
-public:
-	virtual ~IGpDisplayDriver() {}
-
-	virtual void Run() = 0;
-	virtual void Shutdown() = 0;
-
-	virtual void GetDisplayResolution(unsigned int *width, unsigned int *height, PortabilityLayer::PixelFormat *bpp) = 0;
-};
+#include "PixelFormat.h"
+
+struct IGpDisplayDriverSurface;
+
+// Display drivers are responsible for timing and calling the game tick function.
+struct IGpDisplayDriver
+{
+public:
+	virtual void Run() = 0;
+	virtual void Shutdown() = 0;
+
+	virtual void GetDisplayResolution(unsigned int *width, unsigned int *height, PortabilityLayer::PixelFormat *bpp) = 0;
+
+	virtual IGpDisplayDriverSurface *CreateSurface(size_t width, size_t height, PortabilityLayer::PixelFormat pixelFormat) = 0;
+	virtual void DrawSurface(IGpDisplayDriverSurface *surface, size_t x, size_t y, size_t width, size_t height) = 0;
+
+	virtual void UpdatePalette(const void *paletteData) = 0;
+};