GPU: More work on OpenGL renderer

src/pse/host_interface.h

@@ -0,0 +1,16 @@
+#pragma once
+#include "types.h"
+
+namespace GL {
+class Texture;
+}
+
+class HostInterface
+{
+public:
+  virtual void SetDisplayTexture(GL::Texture* texture, u32 offset_x, u32 offset_y, u32 width, u32 height) = 0;
+  virtual void ReportMessage(const char* message) = 0;
+
+  // Adds OSD messages, duration is in seconds.
+  virtual void AddOSDMessage(const char* message, float duration = 2.0f) = 0;
+};