A new debugger.

Lots of bugs/rough edges/etc - issues will be filed.
Old-style debugging still works (just use --emit_source_annotations to get
the helpful movs back and --break_on_instruction will still fire).

src/xenia/debug/ui/imgui_renderer.h

@@ -0,0 +1,55 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_DEBUG_UI_IMGUI_RENDERER_H_
+#define XENIA_DEBUG_UI_IMGUI_RENDERER_H_
+
+#include <memory>
+
+#include "third_party/imgui/imgui.h"
+#include "xenia/base/clock.h"
+#include "xenia/base/logging.h"
+#include "xenia/base/math.h"
+#include "xenia/ui/gl/circular_buffer.h"
+#include "xenia/ui/gl/gl_context.h"
+#include "xenia/ui/window.h"
+
+namespace xe {
+namespace debug {
+namespace ui {
+
+class ImGuiRenderer {
+ public:
+  ImGuiRenderer(xe::ui::Window* window, xe::ui::GraphicsContext* context);
+  ~ImGuiRenderer();
+
+ private:
+  static ImGuiRenderer* global_renderer_;
+
+  void Initialize();
+  void InitializeShaders();
+  void InitializeFontTextures();
+  void Shutdown();
+
+  void RenderDrawLists(ImDrawData* data);
+
+  xe::ui::Window* window_ = nullptr;
+  xe::ui::GraphicsContext* context_ = nullptr;
+
+  GLuint program_ = 0;
+  GLuint vao_ = 0;
+  xe::ui::gl::CircularBuffer vertex_buffer_;
+  xe::ui::gl::CircularBuffer index_buffer_;
+};
+
+}  // namespace ui
+}  // namespace debug
+}  // namespace xe
+
+#endif  // XENIA_DEBUG_UI_IMGUI_RENDERER_H_